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[1/3] dt-bindings: pinctrl: Add bindings for Actions S500 SoC

Message ID 2a7610ff9f33cf72d9df6fc4598741fb6d7836e0.1593112402.git.cristian.ciocaltea@gmail.com
State Changes Requested
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Series Add Actions Semi S500 pinctrl support | expand

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Commit Message

Cristian Ciocaltea June 25, 2020, 8:16 p.m. UTC
Add pinctrl and gpio bindings for Actions Semi S500 SoC.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
---
 .../pinctrl/actions,s500-pinctrl.yaml         | 228 ++++++++++++++++++
 1 file changed, 228 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pinctrl/actions,s500-pinctrl.yaml

Comments

Manivannan Sadhasivam June 26, 2020, 7:20 a.m. UTC | #1
On 26 June 2020 1:46:18 AM IST, Cristian Ciocaltea <cristian.ciocaltea@gmail.com> wrote:
>Add pinctrl and gpio bindings for Actions Semi S500 SoC.
>
>Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
>---
> .../pinctrl/actions,s500-pinctrl.yaml         | 228 ++++++++++++++++++
> 1 file changed, 228 insertions(+)
>create mode 100644
>Documentation/devicetree/bindings/pinctrl/actions,s500-pinctrl.yaml
>
>diff --git
>a/Documentation/devicetree/bindings/pinctrl/actions,s500-pinctrl.yaml
>b/Documentation/devicetree/bindings/pinctrl/actions,s500-pinctrl.yaml
>new file mode 100644
>index 000000000000..856947c70844
>--- /dev/null
>+++
>b/Documentation/devicetree/bindings/pinctrl/actions,s500-pinctrl.yaml
>@@ -0,0 +1,228 @@
>+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>+%YAML 1.2
>+---
>+$id: http://devicetree.org/schemas/pinctrl/actions,s500-pinctrl.yaml#
>+$schema: http://devicetree.org/meta-schemas/core.yaml#
>+
>+title: Actions Semi S500 SoC pinmux & GPIO controller
>+
>+maintainers:
>+  - Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>

Feel free to add yourself as co-maintainer since you are the one contributing S500 support. 

>+
>+description: |
>+  Pinmux & GPIO controller manages pin multiplexing & configuration
>including
>+  GPIO function selection & GPIO attributes configuration. Please
>refer to
>+  pinctrl-bindings.txt in this directory for common binding part and
>usage.
>+
>+properties:
>+  compatible:
>+    const: actions,s500-pinctrl
>+
>+  reg:
>+    minItems: 1
>+    maxItems: 4

4?

Thanks, 
Mani

>+
>+  clocks:
>+    maxItems: 1
>+
>+  gpio-controller: true
>+
>+  gpio-ranges:
>+    maxItems: 1
>+
>+  '#gpio-cells':
>+    description:
>+      Specifies the pin number and flags, as defined in
>+      include/dt-bindings/gpio/gpio.h
>+    const: 2
>+
>+  interrupt-controller: true
>+
>+  '#interrupt-cells':
>+    description:
>+      Specifies the pin number and flags, as defined in
>+      include/dt-bindings/interrupt-controller/irq.h
>+    const: 2
>+
>+  interrupts:
>+    description:
>+      One interrupt per each of the 5 GPIO ports supported by the
>controller,
>+      sorted by port number ascending order.
>+    minItems: 5
>+    maxItems: 5
>+
>+patternProperties:
>+  '^.*$':
>+    if:
>+      type: object
>+    then:
>+      patternProperties:
>+        'pinmux$':
>+          type: object
>+          description:
>+            Pinctrl node's client devices specify pin muxes using
>subnodes,
>+            which in turn use the standard properties below.
>+          $ref: pinmux-node.yaml#
>+
>+          properties:
>+            groups:
>+              description:
>+                List of gpio pin groups affected by the functions
>specified in
>+                this subnode.
>+              items:
>+                oneOf:
>+                  - enum: [lcd0_d18_mfp, rmii_crs_dv_mfp,
>rmii_txd0_mfp,
>+                      rmii_txd1_mfp, rmii_txen_mfp, rmii_rxen_mfp,
>+                      rmii_rxd1_mfp, rmii_rxd0_mfp, rmii_ref_clk_mfp,
>+                      i2s_d0_mfp, i2s_pcm1_mfp, i2s0_pcm0_mfp,
>i2s1_pcm0_mfp,
>+                      i2s_d1_mfp, ks_in2_mfp, ks_in1_mfp, ks_in0_mfp,
>+                      ks_in3_mfp, ks_out0_mfp, ks_out1_mfp,
>ks_out2_mfp,
>+                      lvds_o_pn_mfp, dsi_dn0_mfp, dsi_dp2_mfp,
>lcd0_d17_mfp,
>+                      dsi_dp3_mfp, dsi_dn3_mfp, dsi_dp0_mfp,
>lvds_ee_pn_mfp,
>+                      spi0_i2c_pcm_mfp, spi0_i2s_pcm_mfp,
>dsi_dnp1_cp_mfp,
>+                      lvds_e_pn_mfp, dsi_dn2_mfp, uart2_rtsb_mfp,
>+                      uart2_ctsb_mfp, uart3_rtsb_mfp, uart3_ctsb_mfp,
>+                      sd0_d0_mfp, sd0_d1_mfp, sd0_d2_d3_mfp,
>sd1_d0_d3_mfp,
>+                      sd0_cmd_mfp, sd0_clk_mfp, sd1_cmd_mfp,
>uart0_rx_mfp,
>+                      clko_25m_mfp, csi_cn_cp_mfp, sens0_ckout_mfp,
>+                      uart0_tx_mfp, i2c0_mfp, csi_dn_dp_mfp,
>sen0_pclk_mfp,
>+                      pcm1_in_mfp, pcm1_clk_mfp, pcm1_sync_mfp,
>pcm1_out_mfp,
>+                      dnand_data_wr_mfp, dnand_acle_ce0_mfp,
>nand_ceb2_mfp,
>+                      nand_ceb3_mfp]
>+              minItems: 1
>+              maxItems: 32
>+
>+            function:
>+              description:
>+                Specify the alternative function to be configured for
>the
>+                given gpio pin groups.
>+              enum: [nor, eth_rmii, eth_smii, spi0, spi1, spi2, spi3,
>sens0,
>+                sens1, uart0, uart1, uart2, uart3, uart4, uart5,
>uart6, i2s0,
>+                i2s1, pcm1, pcm0, ks, jtag, pwm0, pwm1, pwm2, pwm3,
>pwm4, pwm5,
>+                p0, sd0, sd1, sd2, i2c0, i2c1, i2c3, dsi, lvds, usb30,
>clko_25m,
>+                mipi_csi, nand, spdif, ts, lcd0]
>+
>+          required:
>+            - groups
>+            - function
>+
>+          additionalProperties: false
>+
>+        'pinconf$':
>+          type: object
>+          description:
>+            Pinctrl node's client devices specify pin configurations
>using
>+            subnodes, which in turn use the standard properties below.
>+          $ref: pincfg-node.yaml#
>+
>+          properties:
>+            groups:
>+              description:
>+                List of gpio pin groups affected by the drive-strength
>property
>+                specified in this subnode.
>+              items:
>+                oneOf:
>+                  - enum: [sirq_drv, rmii_txd01_txen_drv,
>rmii_rxer_drv,
>+                      rmii_crs_drv, rmii_rxd10_drv, rmii_ref_clk_drv,
>+                      smi_mdc_mdio_drv, i2s_d0_drv, i2s_bclk0_drv,
>i2s3_drv,
>+                      i2s13_drv, pcm1_drv, ks_in_drv, ks_out_drv,
>lvds_all_drv,
>+                      lcd_dsi_drv, dsi_drv, sd0_d0_d3_drv,
>sd1_d0_d3_drv,
>+                      sd0_cmd_drv, sd0_clk_drv, sd1_cmd_drv,
>sd1_clk_drv,
>+                      spi0_all_drv, uart0_rx_drv, uart0_tx_drv,
>uart2_all_drv,
>+                      i2c0_all_drv, i2c12_all_drv, sens0_pclk_drv,
>+                      sens0_ckout_drv, uart3_all_drv]
>+              minItems: 1
>+              maxItems: 32
>+
>+            pins:
>+              description:
>+                List of gpio pins affected by the bias-pull-* and
>+                input-schmitt-* properties specified in this subnode.
>+              items:
>+                oneOf:
>+                  - enum: [dnand_dqs, dnand_dqsn, eth_txd0, eth_txd1,
>eth_txen,
>+                      eth_rxer, eth_crs_dv, eth_rxd1, eth_rxd0,
>eth_ref_clk,
>+                      eth_mdc, eth_mdio, sirq0, sirq1, sirq2, i2s_d0,
>i2s_bclk0,
>+                      i2s_lrclk0, i2s_mclk0, i2s_d1, i2s_bclk1,
>i2s_lrclk1,
>+                      i2s_mclk1, ks_in0, ks_in1, ks_in2, ks_in3,
>ks_out0,
>+                      ks_out1, ks_out2, lvds_oep, lvds_oen, lvds_odp,
>lvds_odn,
>+                      lvds_ocp, lvds_ocn, lvds_obp, lvds_obn,
>lvds_oap,
>+                      lvds_oan, lvds_eep, lvds_een, lvds_edp,
>lvds_edn,
>+                      lvds_ecp, lvds_ecn, lvds_ebp, lvds_ebn,
>lvds_eap,
>+                      lvds_ean, lcd0_d18, lcd0_d17, dsi_dp3, dsi_dn3,
>dsi_dp1,
>+                      dsi_dn1, dsi_cp, dsi_cn, dsi_dp0, dsi_dn0,
>dsi_dp2,
>+                      dsi_dn2, sd0_d0, sd0_d1, sd0_d2, sd0_d3, sd1_d0,
>sd1_d1,
>+                      sd1_d2, sd1_d3, sd0_cmd, sd0_clk, sd1_cmd,
>sd1_clk,
>+                      spi0_sclk, spi0_ss, spi0_miso, spi0_mosi,
>uart0_rx,
>+                      uart0_tx, i2c0_sclk, i2c0_sdata, sensor0_pclk,
>+                      sensor0_ckout, dnand_ale, dnand_cle, dnand_ceb0,
>+                      dnand_ceb1, dnand_ceb2, dnand_ceb3, uart2_rx,
>uart2_tx,
>+                      uart2_rtsb, uart2_ctsb, uart3_rx, uart3_tx,
>uart3_rtsb,
>+                      uart3_ctsb, pcm1_in, pcm1_clk, pcm1_sync,
>pcm1_out,
>+                      i2c1_sclk, i2c1_sdata, i2c2_sclk, i2c2_sdata,
>csi_dn0,
>+                      csi_dp0, csi_dn1, csi_dp1, csi_dn2, csi_dp2,
>csi_dn3,
>+                      csi_dp3, csi_cn, csi_cp, dnand_d0, dnand_d1,
>dnand_d2,
>+                      dnand_d3, dnand_d4, dnand_d5, dnand_d6,
>dnand_d7,
>+                      dnand_rb, dnand_rdb, dnand_rdbn, dnand_wrb,
>porb,
>+                      clko_25m, bsel, pkg0, pkg1, pkg2, pkg3]
>+              minItems: 1
>+              maxItems: 64
>+
>+            bias-pull-up: true
>+            bias-pull-down: true
>+
>+            drive-strength:
>+              description:
>+                Selects the drive strength for the specified pins, in
>mA.
>+              enum: [2, 4, 8, 12]
>+
>+            input-schmitt-enable: true
>+            input-schmitt-disable: true
>+
>+          additionalProperties: false
>+
>+required:
>+  - compatible
>+  - reg
>+  - clocks
>+  - gpio-controller
>+  - gpio-ranges
>+  - '#gpio-cells'
>+  - interrupt-controller
>+  - '#interrupt-cells'
>+  - interrupts
>+
>+additionalProperties: false
>+
>+examples:
>+  - |
>+    #include <dt-bindings/interrupt-controller/arm-gic.h>
>+    pinctrl: pinctrl@b01b0000 {
>+        compatible = "actions,s500-pinctrl";
>+        reg = <0xe01b0000 0x1000>;
>+        clocks = <&cmu 20>;
>+        gpio-controller;
>+        gpio-ranges = <&pinctrl 0 0 132>;
>+        #gpio-cells = <2>;
>+        interrupt-controller;
>+        #interrupt-cells = <2>;
>+        interrupts = <GIC_SPI 36 IRQ_TYPE_LEVEL_HIGH>,
>+                     <GIC_SPI 37 IRQ_TYPE_LEVEL_HIGH>,
>+                     <GIC_SPI 38 IRQ_TYPE_LEVEL_HIGH>,
>+                     <GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>,
>+                     <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>;
>+
>+        i2c0_default: i2c0_default {
>+            pinmux {
>+                groups = "i2c0_mfp";
>+                function = "i2c0";
>+            };
>+
>+            pinconf {
>+                pins = "i2c0_sclk", "i2c0_sdata";
>+                bias-pull-up;
>+            };
>+        };
>+    };
>+
>+...
Cristian Ciocaltea June 26, 2020, 1:06 p.m. UTC | #2
On Fri, Jun 26, 2020 at 12:50:46PM +0530, Manivannan Sadhasivam wrote:
> 
> 
> On 26 June 2020 1:46:18 AM IST, Cristian Ciocaltea <cristian.ciocaltea@gmail.com> wrote:
> >Add pinctrl and gpio bindings for Actions Semi S500 SoC.
> >
> >Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
> >---
> > .../pinctrl/actions,s500-pinctrl.yaml         | 228 ++++++++++++++++++
> > 1 file changed, 228 insertions(+)
> >create mode 100644
> >Documentation/devicetree/bindings/pinctrl/actions,s500-pinctrl.yaml
> >
> >diff --git
> >a/Documentation/devicetree/bindings/pinctrl/actions,s500-pinctrl.yaml
> >b/Documentation/devicetree/bindings/pinctrl/actions,s500-pinctrl.yaml
> >new file mode 100644
> >index 000000000000..856947c70844
> >--- /dev/null
> >+++
> >b/Documentation/devicetree/bindings/pinctrl/actions,s500-pinctrl.yaml
> >@@ -0,0 +1,228 @@
> >+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> >+%YAML 1.2
> >+---
> >+$id: http://devicetree.org/schemas/pinctrl/actions,s500-pinctrl.yaml#
> >+$schema: http://devicetree.org/meta-schemas/core.yaml#
> >+
> >+title: Actions Semi S500 SoC pinmux & GPIO controller
> >+
> >+maintainers:
> >+  - Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
> 
> Feel free to add yourself as co-maintainer since you are the one contributing S500 support. 

Ok, thanks!

> 
> >+
> >+description: |
> >+  Pinmux & GPIO controller manages pin multiplexing & configuration
> >including
> >+  GPIO function selection & GPIO attributes configuration. Please
> >refer to
> >+  pinctrl-bindings.txt in this directory for common binding part and
> >usage.
> >+
> >+properties:
> >+  compatible:
> >+    const: actions,s500-pinctrl
> >+
> >+  reg:
> >+    minItems: 1
> >+    maxItems: 4
> 
> 4?
> 
> Thanks, 
> Mani

The pinctrl node in the owl-s500 DTS has a more granular specification
for the reg property, in order to exclude the unused ranges (i.e. PWM):

  reg = <0xb01b0000 0x40>, /* GPIO */
        <0xb01b0040 0x10>, <0xb01b0060 0x18>, <0xb01b0080 0xc>;

The complete node description is available in the related patch:
https://lore.kernel.org/lkml/b43c9d1a1ef689403bc17b2474aff20629b58263.1593124368.git.cristian.ciocaltea@gmail.com/

For the sake of simplicity, in the example below I used the contiguous
range. However, I've just noticed a copy/paste issue there, the correct
range should be <0xb01b0000 0x8c> - will be fixed in the next revision.

Thanks for reviewing,
Cristi

> 
> >+
> >+  clocks:
> >+    maxItems: 1
> >+
> >+  gpio-controller: true
> >+
> >+  gpio-ranges:
> >+    maxItems: 1
> >+
> >+  '#gpio-cells':
> >+    description:
> >+      Specifies the pin number and flags, as defined in
> >+      include/dt-bindings/gpio/gpio.h
> >+    const: 2
> >+
> >+  interrupt-controller: true
> >+
> >+  '#interrupt-cells':
> >+    description:
> >+      Specifies the pin number and flags, as defined in
> >+      include/dt-bindings/interrupt-controller/irq.h
> >+    const: 2
> >+
> >+  interrupts:
> >+    description:
> >+      One interrupt per each of the 5 GPIO ports supported by the
> >controller,
> >+      sorted by port number ascending order.
> >+    minItems: 5
> >+    maxItems: 5
> >+
> >+patternProperties:
> >+  '^.*$':
> >+    if:
> >+      type: object
> >+    then:
> >+      patternProperties:
> >+        'pinmux$':
> >+          type: object
> >+          description:
> >+            Pinctrl node's client devices specify pin muxes using
> >subnodes,
> >+            which in turn use the standard properties below.
> >+          $ref: pinmux-node.yaml#
> >+
> >+          properties:
> >+            groups:
> >+              description:
> >+                List of gpio pin groups affected by the functions
> >specified in
> >+                this subnode.
> >+              items:
> >+                oneOf:
> >+                  - enum: [lcd0_d18_mfp, rmii_crs_dv_mfp,
> >rmii_txd0_mfp,
> >+                      rmii_txd1_mfp, rmii_txen_mfp, rmii_rxen_mfp,
> >+                      rmii_rxd1_mfp, rmii_rxd0_mfp, rmii_ref_clk_mfp,
> >+                      i2s_d0_mfp, i2s_pcm1_mfp, i2s0_pcm0_mfp,
> >i2s1_pcm0_mfp,
> >+                      i2s_d1_mfp, ks_in2_mfp, ks_in1_mfp, ks_in0_mfp,
> >+                      ks_in3_mfp, ks_out0_mfp, ks_out1_mfp,
> >ks_out2_mfp,
> >+                      lvds_o_pn_mfp, dsi_dn0_mfp, dsi_dp2_mfp,
> >lcd0_d17_mfp,
> >+                      dsi_dp3_mfp, dsi_dn3_mfp, dsi_dp0_mfp,
> >lvds_ee_pn_mfp,
> >+                      spi0_i2c_pcm_mfp, spi0_i2s_pcm_mfp,
> >dsi_dnp1_cp_mfp,
> >+                      lvds_e_pn_mfp, dsi_dn2_mfp, uart2_rtsb_mfp,
> >+                      uart2_ctsb_mfp, uart3_rtsb_mfp, uart3_ctsb_mfp,
> >+                      sd0_d0_mfp, sd0_d1_mfp, sd0_d2_d3_mfp,
> >sd1_d0_d3_mfp,
> >+                      sd0_cmd_mfp, sd0_clk_mfp, sd1_cmd_mfp,
> >uart0_rx_mfp,
> >+                      clko_25m_mfp, csi_cn_cp_mfp, sens0_ckout_mfp,
> >+                      uart0_tx_mfp, i2c0_mfp, csi_dn_dp_mfp,
> >sen0_pclk_mfp,
> >+                      pcm1_in_mfp, pcm1_clk_mfp, pcm1_sync_mfp,
> >pcm1_out_mfp,
> >+                      dnand_data_wr_mfp, dnand_acle_ce0_mfp,
> >nand_ceb2_mfp,
> >+                      nand_ceb3_mfp]
> >+              minItems: 1
> >+              maxItems: 32
> >+
> >+            function:
> >+              description:
> >+                Specify the alternative function to be configured for
> >the
> >+                given gpio pin groups.
> >+              enum: [nor, eth_rmii, eth_smii, spi0, spi1, spi2, spi3,
> >sens0,
> >+                sens1, uart0, uart1, uart2, uart3, uart4, uart5,
> >uart6, i2s0,
> >+                i2s1, pcm1, pcm0, ks, jtag, pwm0, pwm1, pwm2, pwm3,
> >pwm4, pwm5,
> >+                p0, sd0, sd1, sd2, i2c0, i2c1, i2c3, dsi, lvds, usb30,
> >clko_25m,
> >+                mipi_csi, nand, spdif, ts, lcd0]
> >+
> >+          required:
> >+            - groups
> >+            - function
> >+
> >+          additionalProperties: false
> >+
> >+        'pinconf$':
> >+          type: object
> >+          description:
> >+            Pinctrl node's client devices specify pin configurations
> >using
> >+            subnodes, which in turn use the standard properties below.
> >+          $ref: pincfg-node.yaml#
> >+
> >+          properties:
> >+            groups:
> >+              description:
> >+                List of gpio pin groups affected by the drive-strength
> >property
> >+                specified in this subnode.
> >+              items:
> >+                oneOf:
> >+                  - enum: [sirq_drv, rmii_txd01_txen_drv,
> >rmii_rxer_drv,
> >+                      rmii_crs_drv, rmii_rxd10_drv, rmii_ref_clk_drv,
> >+                      smi_mdc_mdio_drv, i2s_d0_drv, i2s_bclk0_drv,
> >i2s3_drv,
> >+                      i2s13_drv, pcm1_drv, ks_in_drv, ks_out_drv,
> >lvds_all_drv,
> >+                      lcd_dsi_drv, dsi_drv, sd0_d0_d3_drv,
> >sd1_d0_d3_drv,
> >+                      sd0_cmd_drv, sd0_clk_drv, sd1_cmd_drv,
> >sd1_clk_drv,
> >+                      spi0_all_drv, uart0_rx_drv, uart0_tx_drv,
> >uart2_all_drv,
> >+                      i2c0_all_drv, i2c12_all_drv, sens0_pclk_drv,
> >+                      sens0_ckout_drv, uart3_all_drv]
> >+              minItems: 1
> >+              maxItems: 32
> >+
> >+            pins:
> >+              description:
> >+                List of gpio pins affected by the bias-pull-* and
> >+                input-schmitt-* properties specified in this subnode.
> >+              items:
> >+                oneOf:
> >+                  - enum: [dnand_dqs, dnand_dqsn, eth_txd0, eth_txd1,
> >eth_txen,
> >+                      eth_rxer, eth_crs_dv, eth_rxd1, eth_rxd0,
> >eth_ref_clk,
> >+                      eth_mdc, eth_mdio, sirq0, sirq1, sirq2, i2s_d0,
> >i2s_bclk0,
> >+                      i2s_lrclk0, i2s_mclk0, i2s_d1, i2s_bclk1,
> >i2s_lrclk1,
> >+                      i2s_mclk1, ks_in0, ks_in1, ks_in2, ks_in3,
> >ks_out0,
> >+                      ks_out1, ks_out2, lvds_oep, lvds_oen, lvds_odp,
> >lvds_odn,
> >+                      lvds_ocp, lvds_ocn, lvds_obp, lvds_obn,
> >lvds_oap,
> >+                      lvds_oan, lvds_eep, lvds_een, lvds_edp,
> >lvds_edn,
> >+                      lvds_ecp, lvds_ecn, lvds_ebp, lvds_ebn,
> >lvds_eap,
> >+                      lvds_ean, lcd0_d18, lcd0_d17, dsi_dp3, dsi_dn3,
> >dsi_dp1,
> >+                      dsi_dn1, dsi_cp, dsi_cn, dsi_dp0, dsi_dn0,
> >dsi_dp2,
> >+                      dsi_dn2, sd0_d0, sd0_d1, sd0_d2, sd0_d3, sd1_d0,
> >sd1_d1,
> >+                      sd1_d2, sd1_d3, sd0_cmd, sd0_clk, sd1_cmd,
> >sd1_clk,
> >+                      spi0_sclk, spi0_ss, spi0_miso, spi0_mosi,
> >uart0_rx,
> >+                      uart0_tx, i2c0_sclk, i2c0_sdata, sensor0_pclk,
> >+                      sensor0_ckout, dnand_ale, dnand_cle, dnand_ceb0,
> >+                      dnand_ceb1, dnand_ceb2, dnand_ceb3, uart2_rx,
> >uart2_tx,
> >+                      uart2_rtsb, uart2_ctsb, uart3_rx, uart3_tx,
> >uart3_rtsb,
> >+                      uart3_ctsb, pcm1_in, pcm1_clk, pcm1_sync,
> >pcm1_out,
> >+                      i2c1_sclk, i2c1_sdata, i2c2_sclk, i2c2_sdata,
> >csi_dn0,
> >+                      csi_dp0, csi_dn1, csi_dp1, csi_dn2, csi_dp2,
> >csi_dn3,
> >+                      csi_dp3, csi_cn, csi_cp, dnand_d0, dnand_d1,
> >dnand_d2,
> >+                      dnand_d3, dnand_d4, dnand_d5, dnand_d6,
> >dnand_d7,
> >+                      dnand_rb, dnand_rdb, dnand_rdbn, dnand_wrb,
> >porb,
> >+                      clko_25m, bsel, pkg0, pkg1, pkg2, pkg3]
> >+              minItems: 1
> >+              maxItems: 64
> >+
> >+            bias-pull-up: true
> >+            bias-pull-down: true
> >+
> >+            drive-strength:
> >+              description:
> >+                Selects the drive strength for the specified pins, in
> >mA.
> >+              enum: [2, 4, 8, 12]
> >+
> >+            input-schmitt-enable: true
> >+            input-schmitt-disable: true
> >+
> >+          additionalProperties: false
> >+
> >+required:
> >+  - compatible
> >+  - reg
> >+  - clocks
> >+  - gpio-controller
> >+  - gpio-ranges
> >+  - '#gpio-cells'
> >+  - interrupt-controller
> >+  - '#interrupt-cells'
> >+  - interrupts
> >+
> >+additionalProperties: false
> >+
> >+examples:
> >+  - |
> >+    #include <dt-bindings/interrupt-controller/arm-gic.h>
> >+    pinctrl: pinctrl@b01b0000 {
> >+        compatible = "actions,s500-pinctrl";
> >+        reg = <0xe01b0000 0x1000>;
> >+        clocks = <&cmu 20>;
> >+        gpio-controller;
> >+        gpio-ranges = <&pinctrl 0 0 132>;
> >+        #gpio-cells = <2>;
> >+        interrupt-controller;
> >+        #interrupt-cells = <2>;
> >+        interrupts = <GIC_SPI 36 IRQ_TYPE_LEVEL_HIGH>,
> >+                     <GIC_SPI 37 IRQ_TYPE_LEVEL_HIGH>,
> >+                     <GIC_SPI 38 IRQ_TYPE_LEVEL_HIGH>,
> >+                     <GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>,
> >+                     <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>;
> >+
> >+        i2c0_default: i2c0_default {
> >+            pinmux {
> >+                groups = "i2c0_mfp";
> >+                function = "i2c0";
> >+            };
> >+
> >+            pinconf {
> >+                pins = "i2c0_sclk", "i2c0_sdata";
> >+                bias-pull-up;
> >+            };
> >+        };
> >+    };
> >+
> >+...
> 
> -- 
> Sent from my Android device with K-9 Mail. Please excuse my brevity.
Rob Herring July 15, 2020, 8:03 p.m. UTC | #3
On Thu, Jun 25, 2020 at 11:16:18PM +0300, Cristian Ciocaltea wrote:
> Add pinctrl and gpio bindings for Actions Semi S500 SoC.
> 
> Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
> ---
>  .../pinctrl/actions,s500-pinctrl.yaml         | 228 ++++++++++++++++++
>  1 file changed, 228 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/pinctrl/actions,s500-pinctrl.yaml
> 
> diff --git a/Documentation/devicetree/bindings/pinctrl/actions,s500-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/actions,s500-pinctrl.yaml
> new file mode 100644
> index 000000000000..856947c70844
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/pinctrl/actions,s500-pinctrl.yaml
> @@ -0,0 +1,228 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/pinctrl/actions,s500-pinctrl.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Actions Semi S500 SoC pinmux & GPIO controller
> +
> +maintainers:
> +  - Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
> +
> +description: |
> +  Pinmux & GPIO controller manages pin multiplexing & configuration including
> +  GPIO function selection & GPIO attributes configuration. Please refer to
> +  pinctrl-bindings.txt in this directory for common binding part and usage.
> +
> +properties:
> +  compatible:
> +    const: actions,s500-pinctrl
> +
> +  reg:
> +    minItems: 1
> +    maxItems: 4

Need to enumerate what each register range is.

> +
> +  clocks:
> +    maxItems: 1
> +
> +  gpio-controller: true
> +
> +  gpio-ranges:
> +    maxItems: 1
> +
> +  '#gpio-cells':
> +    description:
> +      Specifies the pin number and flags, as defined in
> +      include/dt-bindings/gpio/gpio.h
> +    const: 2
> +
> +  interrupt-controller: true
> +
> +  '#interrupt-cells':
> +    description:
> +      Specifies the pin number and flags, as defined in
> +      include/dt-bindings/interrupt-controller/irq.h
> +    const: 2
> +
> +  interrupts:
> +    description:
> +      One interrupt per each of the 5 GPIO ports supported by the controller,
> +      sorted by port number ascending order.
> +    minItems: 5
> +    maxItems: 5
> +
> +patternProperties:
> +  '^.*$':
> +    if:
> +      type: object

For a new binding, can you do '-pins$' for the node names so we don't 
need this if/then hack.

> +    then:
> +      patternProperties:
> +        'pinmux$':

Is this really a pattern? Can't tell from the example.

> +          type: object
> +          description:
> +            Pinctrl node's client devices specify pin muxes using subnodes,
> +            which in turn use the standard properties below.
> +          $ref: pinmux-node.yaml#
> +
> +          properties:
> +            groups:
> +              description:
> +                List of gpio pin groups affected by the functions specified in
> +                this subnode.
> +              items:
> +                oneOf:
> +                  - enum: [lcd0_d18_mfp, rmii_crs_dv_mfp, rmii_txd0_mfp,
> +                      rmii_txd1_mfp, rmii_txen_mfp, rmii_rxen_mfp,
> +                      rmii_rxd1_mfp, rmii_rxd0_mfp, rmii_ref_clk_mfp,
> +                      i2s_d0_mfp, i2s_pcm1_mfp, i2s0_pcm0_mfp, i2s1_pcm0_mfp,
> +                      i2s_d1_mfp, ks_in2_mfp, ks_in1_mfp, ks_in0_mfp,
> +                      ks_in3_mfp, ks_out0_mfp, ks_out1_mfp, ks_out2_mfp,
> +                      lvds_o_pn_mfp, dsi_dn0_mfp, dsi_dp2_mfp, lcd0_d17_mfp,
> +                      dsi_dp3_mfp, dsi_dn3_mfp, dsi_dp0_mfp, lvds_ee_pn_mfp,
> +                      spi0_i2c_pcm_mfp, spi0_i2s_pcm_mfp, dsi_dnp1_cp_mfp,
> +                      lvds_e_pn_mfp, dsi_dn2_mfp, uart2_rtsb_mfp,
> +                      uart2_ctsb_mfp, uart3_rtsb_mfp, uart3_ctsb_mfp,
> +                      sd0_d0_mfp, sd0_d1_mfp, sd0_d2_d3_mfp, sd1_d0_d3_mfp,
> +                      sd0_cmd_mfp, sd0_clk_mfp, sd1_cmd_mfp, uart0_rx_mfp,
> +                      clko_25m_mfp, csi_cn_cp_mfp, sens0_ckout_mfp,
> +                      uart0_tx_mfp, i2c0_mfp, csi_dn_dp_mfp, sen0_pclk_mfp,
> +                      pcm1_in_mfp, pcm1_clk_mfp, pcm1_sync_mfp, pcm1_out_mfp,
> +                      dnand_data_wr_mfp, dnand_acle_ce0_mfp, nand_ceb2_mfp,
> +                      nand_ceb3_mfp]
> +              minItems: 1
> +              maxItems: 32
> +
> +            function:
> +              description:
> +                Specify the alternative function to be configured for the
> +                given gpio pin groups.
> +              enum: [nor, eth_rmii, eth_smii, spi0, spi1, spi2, spi3, sens0,
> +                sens1, uart0, uart1, uart2, uart3, uart4, uart5, uart6, i2s0,
> +                i2s1, pcm1, pcm0, ks, jtag, pwm0, pwm1, pwm2, pwm3, pwm4, pwm5,
> +                p0, sd0, sd1, sd2, i2c0, i2c1, i2c3, dsi, lvds, usb30, clko_25m,
> +                mipi_csi, nand, spdif, ts, lcd0]
> +
> +          required:
> +            - groups
> +            - function
> +
> +          additionalProperties: false
> +
> +        'pinconf$':
> +          type: object
> +          description:
> +            Pinctrl node's client devices specify pin configurations using
> +            subnodes, which in turn use the standard properties below.
> +          $ref: pincfg-node.yaml#
> +
> +          properties:
> +            groups:
> +              description:
> +                List of gpio pin groups affected by the drive-strength property
> +                specified in this subnode.
> +              items:
> +                oneOf:
> +                  - enum: [sirq_drv, rmii_txd01_txen_drv, rmii_rxer_drv,
> +                      rmii_crs_drv, rmii_rxd10_drv, rmii_ref_clk_drv,
> +                      smi_mdc_mdio_drv, i2s_d0_drv, i2s_bclk0_drv, i2s3_drv,
> +                      i2s13_drv, pcm1_drv, ks_in_drv, ks_out_drv, lvds_all_drv,
> +                      lcd_dsi_drv, dsi_drv, sd0_d0_d3_drv, sd1_d0_d3_drv,
> +                      sd0_cmd_drv, sd0_clk_drv, sd1_cmd_drv, sd1_clk_drv,
> +                      spi0_all_drv, uart0_rx_drv, uart0_tx_drv, uart2_all_drv,
> +                      i2c0_all_drv, i2c12_all_drv, sens0_pclk_drv,
> +                      sens0_ckout_drv, uart3_all_drv]
> +              minItems: 1
> +              maxItems: 32
> +
> +            pins:
> +              description:
> +                List of gpio pins affected by the bias-pull-* and
> +                input-schmitt-* properties specified in this subnode.
> +              items:
> +                oneOf:
> +                  - enum: [dnand_dqs, dnand_dqsn, eth_txd0, eth_txd1, eth_txen,
> +                      eth_rxer, eth_crs_dv, eth_rxd1, eth_rxd0, eth_ref_clk,
> +                      eth_mdc, eth_mdio, sirq0, sirq1, sirq2, i2s_d0, i2s_bclk0,
> +                      i2s_lrclk0, i2s_mclk0, i2s_d1, i2s_bclk1, i2s_lrclk1,
> +                      i2s_mclk1, ks_in0, ks_in1, ks_in2, ks_in3, ks_out0,
> +                      ks_out1, ks_out2, lvds_oep, lvds_oen, lvds_odp, lvds_odn,
> +                      lvds_ocp, lvds_ocn, lvds_obp, lvds_obn, lvds_oap,
> +                      lvds_oan, lvds_eep, lvds_een, lvds_edp, lvds_edn,
> +                      lvds_ecp, lvds_ecn, lvds_ebp, lvds_ebn, lvds_eap,
> +                      lvds_ean, lcd0_d18, lcd0_d17, dsi_dp3, dsi_dn3, dsi_dp1,
> +                      dsi_dn1, dsi_cp, dsi_cn, dsi_dp0, dsi_dn0, dsi_dp2,
> +                      dsi_dn2, sd0_d0, sd0_d1, sd0_d2, sd0_d3, sd1_d0, sd1_d1,
> +                      sd1_d2, sd1_d3, sd0_cmd, sd0_clk, sd1_cmd, sd1_clk,
> +                      spi0_sclk, spi0_ss, spi0_miso, spi0_mosi, uart0_rx,
> +                      uart0_tx, i2c0_sclk, i2c0_sdata, sensor0_pclk,
> +                      sensor0_ckout, dnand_ale, dnand_cle, dnand_ceb0,
> +                      dnand_ceb1, dnand_ceb2, dnand_ceb3, uart2_rx, uart2_tx,
> +                      uart2_rtsb, uart2_ctsb, uart3_rx, uart3_tx, uart3_rtsb,
> +                      uart3_ctsb, pcm1_in, pcm1_clk, pcm1_sync, pcm1_out,
> +                      i2c1_sclk, i2c1_sdata, i2c2_sclk, i2c2_sdata, csi_dn0,
> +                      csi_dp0, csi_dn1, csi_dp1, csi_dn2, csi_dp2, csi_dn3,
> +                      csi_dp3, csi_cn, csi_cp, dnand_d0, dnand_d1, dnand_d2,
> +                      dnand_d3, dnand_d4, dnand_d5, dnand_d6, dnand_d7,
> +                      dnand_rb, dnand_rdb, dnand_rdbn, dnand_wrb, porb,
> +                      clko_25m, bsel, pkg0, pkg1, pkg2, pkg3]
> +              minItems: 1
> +              maxItems: 64
> +
> +            bias-pull-up: true
> +            bias-pull-down: true
> +
> +            drive-strength:
> +              description:
> +                Selects the drive strength for the specified pins, in mA.
> +              enum: [2, 4, 8, 12]
> +
> +            input-schmitt-enable: true
> +            input-schmitt-disable: true
> +
> +          additionalProperties: false
> +
> +required:
> +  - compatible
> +  - reg
> +  - clocks
> +  - gpio-controller
> +  - gpio-ranges
> +  - '#gpio-cells'
> +  - interrupt-controller
> +  - '#interrupt-cells'
> +  - interrupts
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +    pinctrl: pinctrl@b01b0000 {
> +        compatible = "actions,s500-pinctrl";
> +        reg = <0xe01b0000 0x1000>;
> +        clocks = <&cmu 20>;
> +        gpio-controller;
> +        gpio-ranges = <&pinctrl 0 0 132>;
> +        #gpio-cells = <2>;
> +        interrupt-controller;
> +        #interrupt-cells = <2>;
> +        interrupts = <GIC_SPI 36 IRQ_TYPE_LEVEL_HIGH>,
> +                     <GIC_SPI 37 IRQ_TYPE_LEVEL_HIGH>,
> +                     <GIC_SPI 38 IRQ_TYPE_LEVEL_HIGH>,
> +                     <GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>,
> +                     <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>;
> +
> +        i2c0_default: i2c0_default {
> +            pinmux {
> +                groups = "i2c0_mfp";
> +                function = "i2c0";
> +            };
> +
> +            pinconf {
> +                pins = "i2c0_sclk", "i2c0_sdata";
> +                bias-pull-up;
> +            };
> +        };
> +    };
> +
> +...
> -- 
> 2.27.0
>
Cristian Ciocaltea July 16, 2020, 10:43 a.m. UTC | #4
On Wed, Jul 15, 2020 at 02:03:09PM -0600, Rob Herring wrote:
> On Thu, Jun 25, 2020 at 11:16:18PM +0300, Cristian Ciocaltea wrote:
> > Add pinctrl and gpio bindings for Actions Semi S500 SoC.
> > 
> > Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
> > ---
> >  .../pinctrl/actions,s500-pinctrl.yaml         | 228 ++++++++++++++++++
> >  1 file changed, 228 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/pinctrl/actions,s500-pinctrl.yaml
> > 
> > diff --git a/Documentation/devicetree/bindings/pinctrl/actions,s500-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/actions,s500-pinctrl.yaml
> > new file mode 100644
> > index 000000000000..856947c70844
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/pinctrl/actions,s500-pinctrl.yaml
> > @@ -0,0 +1,228 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/pinctrl/actions,s500-pinctrl.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Actions Semi S500 SoC pinmux & GPIO controller
> > +
> > +maintainers:
> > +  - Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
> > +
> > +description: |
> > +  Pinmux & GPIO controller manages pin multiplexing & configuration including
> > +  GPIO function selection & GPIO attributes configuration. Please refer to
> > +  pinctrl-bindings.txt in this directory for common binding part and usage.
> > +
> > +properties:
> > +  compatible:
> > +    const: actions,s500-pinctrl
> > +
> > +  reg:
> > +    minItems: 1
> > +    maxItems: 4
> 
> Need to enumerate what each register range is.

Hi Rob,

Thanks for the review!

Would the update below suffice?

  reg:
    description: |
      Specifies the memory region(s) associated with the pin-controller.
      To improve granularity, up to four register ranges can be provided:
      * GPIO Output + GPIO Input + GPIO Data
      * Multiplexing Control
      * PAD Pull Control + PAD Schmitt Trigger enable + PAD Control
      * PAD Drive Capacity Select

> > +
> > +  clocks:
> > +    maxItems: 1
> > +
> > +  gpio-controller: true
> > +
> > +  gpio-ranges:
> > +    maxItems: 1
> > +
> > +  '#gpio-cells':
> > +    description:
> > +      Specifies the pin number and flags, as defined in
> > +      include/dt-bindings/gpio/gpio.h
> > +    const: 2
> > +
> > +  interrupt-controller: true
> > +
> > +  '#interrupt-cells':
> > +    description:
> > +      Specifies the pin number and flags, as defined in
> > +      include/dt-bindings/interrupt-controller/irq.h
> > +    const: 2
> > +
> > +  interrupts:
> > +    description:
> > +      One interrupt per each of the 5 GPIO ports supported by the controller,
> > +      sorted by port number ascending order.
> > +    minItems: 5
> > +    maxItems: 5
> > +
> > +patternProperties:
> > +  '^.*$':
> > +    if:
> > +      type: object
> 
> For a new binding, can you do '-pins$' for the node names so we don't 
> need this if/then hack.

Right, the idea was to be consistent with the existing bindings for
S700 and S900, which allow free node names, although they are not yet
converted to yaml format.

> > +    then:
> > +      patternProperties:
> > +        'pinmux$':
> 
> Is this really a pattern? Can't tell from the example.

pinmux and pinconf subnodes may appear multiple times, that's why I
decided to match their names based on the suffix.

The example is not complex enough, I will change it to the following:

    mmc0_default: mmc0_default {
        pinmux {
            groups = "sd0_d0_mfp", "sd0_d1_mfp", "sd0_d2_d3_mfp",
                     "sd0_cmd_mfp", "sd0_clk_mfp";
            function = "sd0";
        };

        drv_pinconf {
            groups = "sd0_d0_d3_drv", "sd0_cmd_drv", "sd0_clk_drv";
            drive-strength = <8>;
        };

        bias_pinconf {
            pins = "sd0_d0", "sd0_d1", "sd0_d2",
                   "sd0_d3", "sd0_cmd";
            bias-pull-up;
        };
    };

> > +          type: object
> > +          description:
> > +            Pinctrl node's client devices specify pin muxes using subnodes,
> > +            which in turn use the standard properties below.
> > +          $ref: pinmux-node.yaml#
> > +
> > +          properties:
> > +            groups:
> > +              description:
> > +                List of gpio pin groups affected by the functions specified in
> > +                this subnode.
> > +              items:
> > +                oneOf:
> > +                  - enum: [lcd0_d18_mfp, rmii_crs_dv_mfp, rmii_txd0_mfp,
> > +                      rmii_txd1_mfp, rmii_txen_mfp, rmii_rxen_mfp,
> > +                      rmii_rxd1_mfp, rmii_rxd0_mfp, rmii_ref_clk_mfp,
> > +                      i2s_d0_mfp, i2s_pcm1_mfp, i2s0_pcm0_mfp, i2s1_pcm0_mfp,
> > +                      i2s_d1_mfp, ks_in2_mfp, ks_in1_mfp, ks_in0_mfp,
> > +                      ks_in3_mfp, ks_out0_mfp, ks_out1_mfp, ks_out2_mfp,
> > +                      lvds_o_pn_mfp, dsi_dn0_mfp, dsi_dp2_mfp, lcd0_d17_mfp,
> > +                      dsi_dp3_mfp, dsi_dn3_mfp, dsi_dp0_mfp, lvds_ee_pn_mfp,
> > +                      spi0_i2c_pcm_mfp, spi0_i2s_pcm_mfp, dsi_dnp1_cp_mfp,
> > +                      lvds_e_pn_mfp, dsi_dn2_mfp, uart2_rtsb_mfp,
> > +                      uart2_ctsb_mfp, uart3_rtsb_mfp, uart3_ctsb_mfp,
> > +                      sd0_d0_mfp, sd0_d1_mfp, sd0_d2_d3_mfp, sd1_d0_d3_mfp,
> > +                      sd0_cmd_mfp, sd0_clk_mfp, sd1_cmd_mfp, uart0_rx_mfp,
> > +                      clko_25m_mfp, csi_cn_cp_mfp, sens0_ckout_mfp,
> > +                      uart0_tx_mfp, i2c0_mfp, csi_dn_dp_mfp, sen0_pclk_mfp,
> > +                      pcm1_in_mfp, pcm1_clk_mfp, pcm1_sync_mfp, pcm1_out_mfp,
> > +                      dnand_data_wr_mfp, dnand_acle_ce0_mfp, nand_ceb2_mfp,
> > +                      nand_ceb3_mfp]
> > +              minItems: 1
> > +              maxItems: 32
> > +
> > +            function:
> > +              description:
> > +                Specify the alternative function to be configured for the
> > +                given gpio pin groups.
> > +              enum: [nor, eth_rmii, eth_smii, spi0, spi1, spi2, spi3, sens0,
> > +                sens1, uart0, uart1, uart2, uart3, uart4, uart5, uart6, i2s0,
> > +                i2s1, pcm1, pcm0, ks, jtag, pwm0, pwm1, pwm2, pwm3, pwm4, pwm5,
> > +                p0, sd0, sd1, sd2, i2c0, i2c1, i2c3, dsi, lvds, usb30, clko_25m,
> > +                mipi_csi, nand, spdif, ts, lcd0]
> > +
> > +          required:
> > +            - groups
> > +            - function
> > +
> > +          additionalProperties: false
> > +
> > +        'pinconf$':
> > +          type: object
> > +          description:
> > +            Pinctrl node's client devices specify pin configurations using
> > +            subnodes, which in turn use the standard properties below.
> > +          $ref: pincfg-node.yaml#
> > +
> > +          properties:
> > +            groups:
> > +              description:
> > +                List of gpio pin groups affected by the drive-strength property
> > +                specified in this subnode.
> > +              items:
> > +                oneOf:
> > +                  - enum: [sirq_drv, rmii_txd01_txen_drv, rmii_rxer_drv,
> > +                      rmii_crs_drv, rmii_rxd10_drv, rmii_ref_clk_drv,
> > +                      smi_mdc_mdio_drv, i2s_d0_drv, i2s_bclk0_drv, i2s3_drv,
> > +                      i2s13_drv, pcm1_drv, ks_in_drv, ks_out_drv, lvds_all_drv,
> > +                      lcd_dsi_drv, dsi_drv, sd0_d0_d3_drv, sd1_d0_d3_drv,
> > +                      sd0_cmd_drv, sd0_clk_drv, sd1_cmd_drv, sd1_clk_drv,
> > +                      spi0_all_drv, uart0_rx_drv, uart0_tx_drv, uart2_all_drv,
> > +                      i2c0_all_drv, i2c12_all_drv, sens0_pclk_drv,
> > +                      sens0_ckout_drv, uart3_all_drv]
> > +              minItems: 1
> > +              maxItems: 32
> > +
> > +            pins:
> > +              description:
> > +                List of gpio pins affected by the bias-pull-* and
> > +                input-schmitt-* properties specified in this subnode.
> > +              items:
> > +                oneOf:
> > +                  - enum: [dnand_dqs, dnand_dqsn, eth_txd0, eth_txd1, eth_txen,
> > +                      eth_rxer, eth_crs_dv, eth_rxd1, eth_rxd0, eth_ref_clk,
> > +                      eth_mdc, eth_mdio, sirq0, sirq1, sirq2, i2s_d0, i2s_bclk0,
> > +                      i2s_lrclk0, i2s_mclk0, i2s_d1, i2s_bclk1, i2s_lrclk1,
> > +                      i2s_mclk1, ks_in0, ks_in1, ks_in2, ks_in3, ks_out0,
> > +                      ks_out1, ks_out2, lvds_oep, lvds_oen, lvds_odp, lvds_odn,
> > +                      lvds_ocp, lvds_ocn, lvds_obp, lvds_obn, lvds_oap,
> > +                      lvds_oan, lvds_eep, lvds_een, lvds_edp, lvds_edn,
> > +                      lvds_ecp, lvds_ecn, lvds_ebp, lvds_ebn, lvds_eap,
> > +                      lvds_ean, lcd0_d18, lcd0_d17, dsi_dp3, dsi_dn3, dsi_dp1,
> > +                      dsi_dn1, dsi_cp, dsi_cn, dsi_dp0, dsi_dn0, dsi_dp2,
> > +                      dsi_dn2, sd0_d0, sd0_d1, sd0_d2, sd0_d3, sd1_d0, sd1_d1,
> > +                      sd1_d2, sd1_d3, sd0_cmd, sd0_clk, sd1_cmd, sd1_clk,
> > +                      spi0_sclk, spi0_ss, spi0_miso, spi0_mosi, uart0_rx,
> > +                      uart0_tx, i2c0_sclk, i2c0_sdata, sensor0_pclk,
> > +                      sensor0_ckout, dnand_ale, dnand_cle, dnand_ceb0,
> > +                      dnand_ceb1, dnand_ceb2, dnand_ceb3, uart2_rx, uart2_tx,
> > +                      uart2_rtsb, uart2_ctsb, uart3_rx, uart3_tx, uart3_rtsb,
> > +                      uart3_ctsb, pcm1_in, pcm1_clk, pcm1_sync, pcm1_out,
> > +                      i2c1_sclk, i2c1_sdata, i2c2_sclk, i2c2_sdata, csi_dn0,
> > +                      csi_dp0, csi_dn1, csi_dp1, csi_dn2, csi_dp2, csi_dn3,
> > +                      csi_dp3, csi_cn, csi_cp, dnand_d0, dnand_d1, dnand_d2,
> > +                      dnand_d3, dnand_d4, dnand_d5, dnand_d6, dnand_d7,
> > +                      dnand_rb, dnand_rdb, dnand_rdbn, dnand_wrb, porb,
> > +                      clko_25m, bsel, pkg0, pkg1, pkg2, pkg3]
> > +              minItems: 1
> > +              maxItems: 64
> > +
> > +            bias-pull-up: true
> > +            bias-pull-down: true
> > +
> > +            drive-strength:
> > +              description:
> > +                Selects the drive strength for the specified pins, in mA.
> > +              enum: [2, 4, 8, 12]
> > +
> > +            input-schmitt-enable: true
> > +            input-schmitt-disable: true
> > +
> > +          additionalProperties: false
> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +  - clocks
> > +  - gpio-controller
> > +  - gpio-ranges
> > +  - '#gpio-cells'
> > +  - interrupt-controller
> > +  - '#interrupt-cells'
> > +  - interrupts
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > +  - |
> > +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> > +    pinctrl: pinctrl@b01b0000 {
> > +        compatible = "actions,s500-pinctrl";
> > +        reg = <0xe01b0000 0x1000>;
> > +        clocks = <&cmu 20>;
> > +        gpio-controller;
> > +        gpio-ranges = <&pinctrl 0 0 132>;
> > +        #gpio-cells = <2>;
> > +        interrupt-controller;
> > +        #interrupt-cells = <2>;
> > +        interrupts = <GIC_SPI 36 IRQ_TYPE_LEVEL_HIGH>,
> > +                     <GIC_SPI 37 IRQ_TYPE_LEVEL_HIGH>,
> > +                     <GIC_SPI 38 IRQ_TYPE_LEVEL_HIGH>,
> > +                     <GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>,
> > +                     <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>;
> > +
> > +        i2c0_default: i2c0_default {
> > +            pinmux {
> > +                groups = "i2c0_mfp";
> > +                function = "i2c0";
> > +            };
> > +
> > +            pinconf {
> > +                pins = "i2c0_sclk", "i2c0_sdata";
> > +                bias-pull-up;
> > +            };
> > +        };
> > +    };
> > +
> > +...
> > -- 
> > 2.27.0
> >
Rob Herring July 16, 2020, 2:50 p.m. UTC | #5
On Thu, Jul 16, 2020 at 4:43 AM Cristian Ciocaltea
<cristian.ciocaltea@gmail.com> wrote:
>
> On Wed, Jul 15, 2020 at 02:03:09PM -0600, Rob Herring wrote:
> > On Thu, Jun 25, 2020 at 11:16:18PM +0300, Cristian Ciocaltea wrote:
> > > Add pinctrl and gpio bindings for Actions Semi S500 SoC.
> > >
> > > Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
> > > ---
> > >  .../pinctrl/actions,s500-pinctrl.yaml         | 228 ++++++++++++++++++
> > >  1 file changed, 228 insertions(+)
> > >  create mode 100644 Documentation/devicetree/bindings/pinctrl/actions,s500-pinctrl.yaml
> > >
> > > diff --git a/Documentation/devicetree/bindings/pinctrl/actions,s500-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/actions,s500-pinctrl.yaml
> > > new file mode 100644
> > > index 000000000000..856947c70844
> > > --- /dev/null
> > > +++ b/Documentation/devicetree/bindings/pinctrl/actions,s500-pinctrl.yaml
> > > @@ -0,0 +1,228 @@
> > > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > > +%YAML 1.2
> > > +---
> > > +$id: http://devicetree.org/schemas/pinctrl/actions,s500-pinctrl.yaml#
> > > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > > +
> > > +title: Actions Semi S500 SoC pinmux & GPIO controller
> > > +
> > > +maintainers:
> > > +  - Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
> > > +
> > > +description: |
> > > +  Pinmux & GPIO controller manages pin multiplexing & configuration including
> > > +  GPIO function selection & GPIO attributes configuration. Please refer to
> > > +  pinctrl-bindings.txt in this directory for common binding part and usage.
> > > +
> > > +properties:
> > > +  compatible:
> > > +    const: actions,s500-pinctrl
> > > +
> > > +  reg:
> > > +    minItems: 1
> > > +    maxItems: 4
> >
> > Need to enumerate what each register range is.
>
> Hi Rob,
>
> Thanks for the review!
>
> Would the update below suffice?
>
>   reg:
>     description: |
>       Specifies the memory region(s) associated with the pin-controller.
>       To improve granularity, up to four register ranges can be provided:

What does 'improve granularity' mean:

>       * GPIO Output + GPIO Input + GPIO Data
>       * Multiplexing Control
>       * PAD Pull Control + PAD Schmitt Trigger enable + PAD Control
>       * PAD Drive Capacity Select

The h/w sometimes has these and sometimes doesn't?

If they do stay, then you want:

items:
  - description: GPIO Output + GPIO Input + GPIO Data
  - description: ...

>
> > > +
> > > +  clocks:
> > > +    maxItems: 1
> > > +
> > > +  gpio-controller: true
> > > +
> > > +  gpio-ranges:
> > > +    maxItems: 1
> > > +
> > > +  '#gpio-cells':
> > > +    description:
> > > +      Specifies the pin number and flags, as defined in
> > > +      include/dt-bindings/gpio/gpio.h
> > > +    const: 2
> > > +
> > > +  interrupt-controller: true
> > > +
> > > +  '#interrupt-cells':
> > > +    description:
> > > +      Specifies the pin number and flags, as defined in
> > > +      include/dt-bindings/interrupt-controller/irq.h
> > > +    const: 2
> > > +
> > > +  interrupts:
> > > +    description:
> > > +      One interrupt per each of the 5 GPIO ports supported by the controller,
> > > +      sorted by port number ascending order.
> > > +    minItems: 5
> > > +    maxItems: 5
> > > +
> > > +patternProperties:
> > > +  '^.*$':
> > > +    if:
> > > +      type: object
> >
> > For a new binding, can you do '-pins$' for the node names so we don't
> > need this if/then hack.
>
> Right, the idea was to be consistent with the existing bindings for
> S700 and S900, which allow free node names, although they are not yet
> converted to yaml format.

If we want consistency, those should have their node names updated.

>
> > > +    then:
> > > +      patternProperties:
> > > +        'pinmux$':
> >
> > Is this really a pattern? Can't tell from the example.
>
> pinmux and pinconf subnodes may appear multiple times, that's why I
> decided to match their names based on the suffix.
>
> The example is not complex enough, I will change it to the following:
>
>     mmc0_default: mmc0_default {
>         pinmux {
>             groups = "sd0_d0_mfp", "sd0_d1_mfp", "sd0_d2_d3_mfp",
>                      "sd0_cmd_mfp", "sd0_clk_mfp";
>             function = "sd0";
>         };
>
>         drv_pinconf {

drv-pinconf

Make the pattern '-?pinconf' to enforce that. (that '-' may need escaping?)
Cristian Ciocaltea July 16, 2020, 9:26 p.m. UTC | #6
On Thu, Jul 16, 2020 at 08:50:36AM -0600, Rob Herring wrote:
> On Thu, Jul 16, 2020 at 4:43 AM Cristian Ciocaltea
> <cristian.ciocaltea@gmail.com> wrote:
> >
> > On Wed, Jul 15, 2020 at 02:03:09PM -0600, Rob Herring wrote:
> > > On Thu, Jun 25, 2020 at 11:16:18PM +0300, Cristian Ciocaltea wrote:
> > > > Add pinctrl and gpio bindings for Actions Semi S500 SoC.
> > > >
> > > > Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
> > > > ---
> > > >  .../pinctrl/actions,s500-pinctrl.yaml         | 228 ++++++++++++++++++
> > > >  1 file changed, 228 insertions(+)
> > > >  create mode 100644 Documentation/devicetree/bindings/pinctrl/actions,s500-pinctrl.yaml
> > > >
> > > > diff --git a/Documentation/devicetree/bindings/pinctrl/actions,s500-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/actions,s500-pinctrl.yaml
> > > > new file mode 100644
> > > > index 000000000000..856947c70844
> > > > --- /dev/null
> > > > +++ b/Documentation/devicetree/bindings/pinctrl/actions,s500-pinctrl.yaml
> > > > @@ -0,0 +1,228 @@
> > > > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > > > +%YAML 1.2
> > > > +---
> > > > +$id: http://devicetree.org/schemas/pinctrl/actions,s500-pinctrl.yaml#
> > > > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > > > +
> > > > +title: Actions Semi S500 SoC pinmux & GPIO controller
> > > > +
> > > > +maintainers:
> > > > +  - Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
> > > > +
> > > > +description: |
> > > > +  Pinmux & GPIO controller manages pin multiplexing & configuration including
> > > > +  GPIO function selection & GPIO attributes configuration. Please refer to
> > > > +  pinctrl-bindings.txt in this directory for common binding part and usage.
> > > > +
> > > > +properties:
> > > > +  compatible:
> > > > +    const: actions,s500-pinctrl
> > > > +
> > > > +  reg:
> > > > +    minItems: 1
> > > > +    maxItems: 4
> > >
> > > Need to enumerate what each register range is.
> >
> > Hi Rob,
> >
> > Thanks for the review!
> >
> > Would the update below suffice?
> >
> >   reg:
> >     description: |
> >       Specifies the memory region(s) associated with the pin-controller.
> >       To improve granularity, up to four register ranges can be provided:
> 
> What does 'improve granularity' mean:

Technically all the registers used by the driver could be specified via
a single contiguous range. However, there are a few unrelated registers
(i.e. PWM Output Control) which should be excluded in order to come up
with a more accurate specification. The 4 ranges below are basically
the result of this exclusion:

> >       * GPIO Output + GPIO Input + GPIO Data
> >       * Multiplexing Control
> >       * PAD Pull Control + PAD Schmitt Trigger enable + PAD Control
> >       * PAD Drive Capacity Select
> 
> The h/w sometimes has these and sometimes doesn't?

No, the h/w is fixed, the only reason of this approach was to allow a
precise memory region specification, as explained above.

I'm not sure if this should be made mandatory or it's also fine to let
(a lazy) user provide combined ranges or just a contiguous one (like
in the example), with the drawback of loosing the accuracy, of course.

> If they do stay, then you want:
> 
> items:
>   - description: GPIO Output + GPIO Input + GPIO Data
>   - description: ...

Would this be applicable even if we keep this flexible approach and
don't set 'minItems: 4'?

> >
> > > > +
> > > > +  clocks:
> > > > +    maxItems: 1
> > > > +
> > > > +  gpio-controller: true
> > > > +
> > > > +  gpio-ranges:
> > > > +    maxItems: 1
> > > > +
> > > > +  '#gpio-cells':
> > > > +    description:
> > > > +      Specifies the pin number and flags, as defined in
> > > > +      include/dt-bindings/gpio/gpio.h
> > > > +    const: 2
> > > > +
> > > > +  interrupt-controller: true
> > > > +
> > > > +  '#interrupt-cells':
> > > > +    description:
> > > > +      Specifies the pin number and flags, as defined in
> > > > +      include/dt-bindings/interrupt-controller/irq.h
> > > > +    const: 2
> > > > +
> > > > +  interrupts:
> > > > +    description:
> > > > +      One interrupt per each of the 5 GPIO ports supported by the controller,
> > > > +      sorted by port number ascending order.
> > > > +    minItems: 5
> > > > +    maxItems: 5
> > > > +
> > > > +patternProperties:
> > > > +  '^.*$':
> > > > +    if:
> > > > +      type: object
> > >
> > > For a new binding, can you do '-pins$' for the node names so we don't
> > > need this if/then hack.
> >
> > Right, the idea was to be consistent with the existing bindings for
> > S700 and S900, which allow free node names, although they are not yet
> > converted to yaml format.
> 
> If we want consistency, those should have their node names updated.

Fair enough, I have already updated the node names to use the '-pins'
suffix.

> >
> > > > +    then:
> > > > +      patternProperties:
> > > > +        'pinmux$':
> > >
> > > Is this really a pattern? Can't tell from the example.
> >
> > pinmux and pinconf subnodes may appear multiple times, that's why I
> > decided to match their names based on the suffix.
> >
> > The example is not complex enough, I will change it to the following:
> >
> >     mmc0_default: mmc0_default {
> >         pinmux {
> >             groups = "sd0_d0_mfp", "sd0_d1_mfp", "sd0_d2_d3_mfp",
> >                      "sd0_cmd_mfp", "sd0_clk_mfp";
> >             function = "sd0";
> >         };
> >
> >         drv_pinconf {
> 
> drv-pinconf
> 
> Make the pattern '-?pinconf' to enforce that. (that '-' may need escaping?)

Actually the pattern should be '^(.*-)?pinconf$', to restrict the names
to either 'pinconf' or '<label>-pinconf'.

I have just made some more validation tests and noticed I had missed an
'additionalProperties: false' line, for the 'pins' node. Should be fine
now!

Thanks,
Cristi
Manivannan Sadhasivam Aug. 1, 2020, 2:46 p.m. UTC | #7
Hi,

On Fri, Jun 26, 2020 at 04:06:41PM +0300, Cristian Ciocaltea wrote:
> On Fri, Jun 26, 2020 at 12:50:46PM +0530, Manivannan Sadhasivam wrote:
> > 
> > 
> > On 26 June 2020 1:46:18 AM IST, Cristian Ciocaltea <cristian.ciocaltea@gmail.com> wrote:
> > >Add pinctrl and gpio bindings for Actions Semi S500 SoC.
> > >
> > >Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
> > >---
> > > .../pinctrl/actions,s500-pinctrl.yaml         | 228 ++++++++++++++++++
> > > 1 file changed, 228 insertions(+)
> > >create mode 100644
> > >Documentation/devicetree/bindings/pinctrl/actions,s500-pinctrl.yaml
> > >
> > >diff --git
> > >a/Documentation/devicetree/bindings/pinctrl/actions,s500-pinctrl.yaml
> > >b/Documentation/devicetree/bindings/pinctrl/actions,s500-pinctrl.yaml
> > >new file mode 100644
> > >index 000000000000..856947c70844
> > >--- /dev/null
> > >+++
> > >b/Documentation/devicetree/bindings/pinctrl/actions,s500-pinctrl.yaml
> > >@@ -0,0 +1,228 @@
> > >+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > >+%YAML 1.2
> > >+---
> > >+$id: http://devicetree.org/schemas/pinctrl/actions,s500-pinctrl.yaml#
> > >+$schema: http://devicetree.org/meta-schemas/core.yaml#
> > >+
> > >+title: Actions Semi S500 SoC pinmux & GPIO controller
> > >+
> > >+maintainers:
> > >+  - Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
> > 
> > Feel free to add yourself as co-maintainer since you are the one contributing S500 support. 
> 
> Ok, thanks!
> 
> > 
> > >+
> > >+description: |
> > >+  Pinmux & GPIO controller manages pin multiplexing & configuration
> > >including
> > >+  GPIO function selection & GPIO attributes configuration. Please
> > >refer to
> > >+  pinctrl-bindings.txt in this directory for common binding part and
> > >usage.
> > >+
> > >+properties:
> > >+  compatible:
> > >+    const: actions,s500-pinctrl
> > >+
> > >+  reg:
> > >+    minItems: 1
> > >+    maxItems: 4
> > 
> > 4?
> > 
> > Thanks, 
> > Mani
> 
> The pinctrl node in the owl-s500 DTS has a more granular specification
> for the reg property, in order to exclude the unused ranges (i.e. PWM):
> 
>   reg = <0xb01b0000 0x40>, /* GPIO */
>         <0xb01b0040 0x10>, <0xb01b0060 0x18>, <0xb01b0080 0xc>;
> 
> The complete node description is available in the related patch:
> https://lore.kernel.org/lkml/b43c9d1a1ef689403bc17b2474aff20629b58263.1593124368.git.cristian.ciocaltea@gmail.com/
> 
> For the sake of simplicity, in the example below I used the contiguous
> range. However, I've just noticed a copy/paste issue there, the correct
> range should be <0xb01b0000 0x8c> - will be fixed in the next revision.
> 

Hmm, okay. We don't have a better solution _yet_ for this issue and I'm okay
with specifying split ranges in the meantime.

Thanks,
Mani

> Thanks for reviewing,
> Cristi
> 
> > 
> > >+
> > >+  clocks:
> > >+    maxItems: 1
> > >+
> > >+  gpio-controller: true
> > >+
> > >+  gpio-ranges:
> > >+    maxItems: 1
> > >+
> > >+  '#gpio-cells':
> > >+    description:
> > >+      Specifies the pin number and flags, as defined in
> > >+      include/dt-bindings/gpio/gpio.h
> > >+    const: 2
> > >+
> > >+  interrupt-controller: true
> > >+
> > >+  '#interrupt-cells':
> > >+    description:
> > >+      Specifies the pin number and flags, as defined in
> > >+      include/dt-bindings/interrupt-controller/irq.h
> > >+    const: 2
> > >+
> > >+  interrupts:
> > >+    description:
> > >+      One interrupt per each of the 5 GPIO ports supported by the
> > >controller,
> > >+      sorted by port number ascending order.
> > >+    minItems: 5
> > >+    maxItems: 5
> > >+
> > >+patternProperties:
> > >+  '^.*$':
> > >+    if:
> > >+      type: object
> > >+    then:
> > >+      patternProperties:
> > >+        'pinmux$':
> > >+          type: object
> > >+          description:
> > >+            Pinctrl node's client devices specify pin muxes using
> > >subnodes,
> > >+            which in turn use the standard properties below.
> > >+          $ref: pinmux-node.yaml#
> > >+
> > >+          properties:
> > >+            groups:
> > >+              description:
> > >+                List of gpio pin groups affected by the functions
> > >specified in
> > >+                this subnode.
> > >+              items:
> > >+                oneOf:
> > >+                  - enum: [lcd0_d18_mfp, rmii_crs_dv_mfp,
> > >rmii_txd0_mfp,
> > >+                      rmii_txd1_mfp, rmii_txen_mfp, rmii_rxen_mfp,
> > >+                      rmii_rxd1_mfp, rmii_rxd0_mfp, rmii_ref_clk_mfp,
> > >+                      i2s_d0_mfp, i2s_pcm1_mfp, i2s0_pcm0_mfp,
> > >i2s1_pcm0_mfp,
> > >+                      i2s_d1_mfp, ks_in2_mfp, ks_in1_mfp, ks_in0_mfp,
> > >+                      ks_in3_mfp, ks_out0_mfp, ks_out1_mfp,
> > >ks_out2_mfp,
> > >+                      lvds_o_pn_mfp, dsi_dn0_mfp, dsi_dp2_mfp,
> > >lcd0_d17_mfp,
> > >+                      dsi_dp3_mfp, dsi_dn3_mfp, dsi_dp0_mfp,
> > >lvds_ee_pn_mfp,
> > >+                      spi0_i2c_pcm_mfp, spi0_i2s_pcm_mfp,
> > >dsi_dnp1_cp_mfp,
> > >+                      lvds_e_pn_mfp, dsi_dn2_mfp, uart2_rtsb_mfp,
> > >+                      uart2_ctsb_mfp, uart3_rtsb_mfp, uart3_ctsb_mfp,
> > >+                      sd0_d0_mfp, sd0_d1_mfp, sd0_d2_d3_mfp,
> > >sd1_d0_d3_mfp,
> > >+                      sd0_cmd_mfp, sd0_clk_mfp, sd1_cmd_mfp,
> > >uart0_rx_mfp,
> > >+                      clko_25m_mfp, csi_cn_cp_mfp, sens0_ckout_mfp,
> > >+                      uart0_tx_mfp, i2c0_mfp, csi_dn_dp_mfp,
> > >sen0_pclk_mfp,
> > >+                      pcm1_in_mfp, pcm1_clk_mfp, pcm1_sync_mfp,
> > >pcm1_out_mfp,
> > >+                      dnand_data_wr_mfp, dnand_acle_ce0_mfp,
> > >nand_ceb2_mfp,
> > >+                      nand_ceb3_mfp]
> > >+              minItems: 1
> > >+              maxItems: 32
> > >+
> > >+            function:
> > >+              description:
> > >+                Specify the alternative function to be configured for
> > >the
> > >+                given gpio pin groups.
> > >+              enum: [nor, eth_rmii, eth_smii, spi0, spi1, spi2, spi3,
> > >sens0,
> > >+                sens1, uart0, uart1, uart2, uart3, uart4, uart5,
> > >uart6, i2s0,
> > >+                i2s1, pcm1, pcm0, ks, jtag, pwm0, pwm1, pwm2, pwm3,
> > >pwm4, pwm5,
> > >+                p0, sd0, sd1, sd2, i2c0, i2c1, i2c3, dsi, lvds, usb30,
> > >clko_25m,
> > >+                mipi_csi, nand, spdif, ts, lcd0]
> > >+
> > >+          required:
> > >+            - groups
> > >+            - function
> > >+
> > >+          additionalProperties: false
> > >+
> > >+        'pinconf$':
> > >+          type: object
> > >+          description:
> > >+            Pinctrl node's client devices specify pin configurations
> > >using
> > >+            subnodes, which in turn use the standard properties below.
> > >+          $ref: pincfg-node.yaml#
> > >+
> > >+          properties:
> > >+            groups:
> > >+              description:
> > >+                List of gpio pin groups affected by the drive-strength
> > >property
> > >+                specified in this subnode.
> > >+              items:
> > >+                oneOf:
> > >+                  - enum: [sirq_drv, rmii_txd01_txen_drv,
> > >rmii_rxer_drv,
> > >+                      rmii_crs_drv, rmii_rxd10_drv, rmii_ref_clk_drv,
> > >+                      smi_mdc_mdio_drv, i2s_d0_drv, i2s_bclk0_drv,
> > >i2s3_drv,
> > >+                      i2s13_drv, pcm1_drv, ks_in_drv, ks_out_drv,
> > >lvds_all_drv,
> > >+                      lcd_dsi_drv, dsi_drv, sd0_d0_d3_drv,
> > >sd1_d0_d3_drv,
> > >+                      sd0_cmd_drv, sd0_clk_drv, sd1_cmd_drv,
> > >sd1_clk_drv,
> > >+                      spi0_all_drv, uart0_rx_drv, uart0_tx_drv,
> > >uart2_all_drv,
> > >+                      i2c0_all_drv, i2c12_all_drv, sens0_pclk_drv,
> > >+                      sens0_ckout_drv, uart3_all_drv]
> > >+              minItems: 1
> > >+              maxItems: 32
> > >+
> > >+            pins:
> > >+              description:
> > >+                List of gpio pins affected by the bias-pull-* and
> > >+                input-schmitt-* properties specified in this subnode.
> > >+              items:
> > >+                oneOf:
> > >+                  - enum: [dnand_dqs, dnand_dqsn, eth_txd0, eth_txd1,
> > >eth_txen,
> > >+                      eth_rxer, eth_crs_dv, eth_rxd1, eth_rxd0,
> > >eth_ref_clk,
> > >+                      eth_mdc, eth_mdio, sirq0, sirq1, sirq2, i2s_d0,
> > >i2s_bclk0,
> > >+                      i2s_lrclk0, i2s_mclk0, i2s_d1, i2s_bclk1,
> > >i2s_lrclk1,
> > >+                      i2s_mclk1, ks_in0, ks_in1, ks_in2, ks_in3,
> > >ks_out0,
> > >+                      ks_out1, ks_out2, lvds_oep, lvds_oen, lvds_odp,
> > >lvds_odn,
> > >+                      lvds_ocp, lvds_ocn, lvds_obp, lvds_obn,
> > >lvds_oap,
> > >+                      lvds_oan, lvds_eep, lvds_een, lvds_edp,
> > >lvds_edn,
> > >+                      lvds_ecp, lvds_ecn, lvds_ebp, lvds_ebn,
> > >lvds_eap,
> > >+                      lvds_ean, lcd0_d18, lcd0_d17, dsi_dp3, dsi_dn3,
> > >dsi_dp1,
> > >+                      dsi_dn1, dsi_cp, dsi_cn, dsi_dp0, dsi_dn0,
> > >dsi_dp2,
> > >+                      dsi_dn2, sd0_d0, sd0_d1, sd0_d2, sd0_d3, sd1_d0,
> > >sd1_d1,
> > >+                      sd1_d2, sd1_d3, sd0_cmd, sd0_clk, sd1_cmd,
> > >sd1_clk,
> > >+                      spi0_sclk, spi0_ss, spi0_miso, spi0_mosi,
> > >uart0_rx,
> > >+                      uart0_tx, i2c0_sclk, i2c0_sdata, sensor0_pclk,
> > >+                      sensor0_ckout, dnand_ale, dnand_cle, dnand_ceb0,
> > >+                      dnand_ceb1, dnand_ceb2, dnand_ceb3, uart2_rx,
> > >uart2_tx,
> > >+                      uart2_rtsb, uart2_ctsb, uart3_rx, uart3_tx,
> > >uart3_rtsb,
> > >+                      uart3_ctsb, pcm1_in, pcm1_clk, pcm1_sync,
> > >pcm1_out,
> > >+                      i2c1_sclk, i2c1_sdata, i2c2_sclk, i2c2_sdata,
> > >csi_dn0,
> > >+                      csi_dp0, csi_dn1, csi_dp1, csi_dn2, csi_dp2,
> > >csi_dn3,
> > >+                      csi_dp3, csi_cn, csi_cp, dnand_d0, dnand_d1,
> > >dnand_d2,
> > >+                      dnand_d3, dnand_d4, dnand_d5, dnand_d6,
> > >dnand_d7,
> > >+                      dnand_rb, dnand_rdb, dnand_rdbn, dnand_wrb,
> > >porb,
> > >+                      clko_25m, bsel, pkg0, pkg1, pkg2, pkg3]
> > >+              minItems: 1
> > >+              maxItems: 64
> > >+
> > >+            bias-pull-up: true
> > >+            bias-pull-down: true
> > >+
> > >+            drive-strength:
> > >+              description:
> > >+                Selects the drive strength for the specified pins, in
> > >mA.
> > >+              enum: [2, 4, 8, 12]
> > >+
> > >+            input-schmitt-enable: true
> > >+            input-schmitt-disable: true
> > >+
> > >+          additionalProperties: false
> > >+
> > >+required:
> > >+  - compatible
> > >+  - reg
> > >+  - clocks
> > >+  - gpio-controller
> > >+  - gpio-ranges
> > >+  - '#gpio-cells'
> > >+  - interrupt-controller
> > >+  - '#interrupt-cells'
> > >+  - interrupts
> > >+
> > >+additionalProperties: false
> > >+
> > >+examples:
> > >+  - |
> > >+    #include <dt-bindings/interrupt-controller/arm-gic.h>
> > >+    pinctrl: pinctrl@b01b0000 {
> > >+        compatible = "actions,s500-pinctrl";
> > >+        reg = <0xe01b0000 0x1000>;
> > >+        clocks = <&cmu 20>;
> > >+        gpio-controller;
> > >+        gpio-ranges = <&pinctrl 0 0 132>;
> > >+        #gpio-cells = <2>;
> > >+        interrupt-controller;
> > >+        #interrupt-cells = <2>;
> > >+        interrupts = <GIC_SPI 36 IRQ_TYPE_LEVEL_HIGH>,
> > >+                     <GIC_SPI 37 IRQ_TYPE_LEVEL_HIGH>,
> > >+                     <GIC_SPI 38 IRQ_TYPE_LEVEL_HIGH>,
> > >+                     <GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>,
> > >+                     <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>;
> > >+
> > >+        i2c0_default: i2c0_default {
> > >+            pinmux {
> > >+                groups = "i2c0_mfp";
> > >+                function = "i2c0";
> > >+            };
> > >+
> > >+            pinconf {
> > >+                pins = "i2c0_sclk", "i2c0_sdata";
> > >+                bias-pull-up;
> > >+            };
> > >+        };
> > >+    };
> > >+
> > >+...
> > 
> > -- 
> > Sent from my Android device with K-9 Mail. Please excuse my brevity.
Cristian Ciocaltea Aug. 2, 2020, 9:35 a.m. UTC | #8
On Sat, Aug 01, 2020 at 08:16:06PM +0530, Manivannan Sadhasivam wrote:
> Hi,
> 
> On Fri, Jun 26, 2020 at 04:06:41PM +0300, Cristian Ciocaltea wrote:
> > On Fri, Jun 26, 2020 at 12:50:46PM +0530, Manivannan Sadhasivam wrote:
> > > 
> > > 
> > > On 26 June 2020 1:46:18 AM IST, Cristian Ciocaltea <cristian.ciocaltea@gmail.com> wrote:
> > > >Add pinctrl and gpio bindings for Actions Semi S500 SoC.
> > > >
> > > >Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
> > > >---
> > > > .../pinctrl/actions,s500-pinctrl.yaml         | 228 ++++++++++++++++++
> > > > 1 file changed, 228 insertions(+)
> > > >create mode 100644
> > > >Documentation/devicetree/bindings/pinctrl/actions,s500-pinctrl.yaml
> > > >
> > > >diff --git
> > > >a/Documentation/devicetree/bindings/pinctrl/actions,s500-pinctrl.yaml
> > > >b/Documentation/devicetree/bindings/pinctrl/actions,s500-pinctrl.yaml
> > > >new file mode 100644
> > > >index 000000000000..856947c70844
> > > >--- /dev/null
> > > >+++
> > > >b/Documentation/devicetree/bindings/pinctrl/actions,s500-pinctrl.yaml
> > > >@@ -0,0 +1,228 @@
> > > >+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > > >+%YAML 1.2
> > > >+---
> > > >+$id: http://devicetree.org/schemas/pinctrl/actions,s500-pinctrl.yaml#
> > > >+$schema: http://devicetree.org/meta-schemas/core.yaml#
> > > >+
> > > >+title: Actions Semi S500 SoC pinmux & GPIO controller
> > > >+
> > > >+maintainers:
> > > >+  - Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
> > > 
> > > Feel free to add yourself as co-maintainer since you are the one contributing S500 support. 
> > 
> > Ok, thanks!
> > 
> > > 
> > > >+
> > > >+description: |
> > > >+  Pinmux & GPIO controller manages pin multiplexing & configuration
> > > >including
> > > >+  GPIO function selection & GPIO attributes configuration. Please
> > > >refer to
> > > >+  pinctrl-bindings.txt in this directory for common binding part and
> > > >usage.
> > > >+
> > > >+properties:
> > > >+  compatible:
> > > >+    const: actions,s500-pinctrl
> > > >+
> > > >+  reg:
> > > >+    minItems: 1
> > > >+    maxItems: 4
> > > 
> > > 4?
> > > 
> > > Thanks, 
> > > Mani
> > 
> > The pinctrl node in the owl-s500 DTS has a more granular specification
> > for the reg property, in order to exclude the unused ranges (i.e. PWM):
> > 
> >   reg = <0xb01b0000 0x40>, /* GPIO */
> >         <0xb01b0040 0x10>, <0xb01b0060 0x18>, <0xb01b0080 0xc>;
> > 
> > The complete node description is available in the related patch:
> > https://lore.kernel.org/lkml/b43c9d1a1ef689403bc17b2474aff20629b58263.1593124368.git.cristian.ciocaltea@gmail.com/
> > 
> > For the sake of simplicity, in the example below I used the contiguous
> > range. However, I've just noticed a copy/paste issue there, the correct
> > range should be <0xb01b0000 0x8c> - will be fixed in the next revision.
> > 
> 
> Hmm, okay. We don't have a better solution _yet_ for this issue and I'm okay
> with specifying split ranges in the meantime.

To avoid any further confusion, I will also change the example to use
the split ranges. This will match the reg items description nodes as
indicated by Rob.

I will send a new revision of the patch series as soon as we clarify
the GPIO ports offsets in the pinctrl driver implementation. Please
let me know if I should provide more information on that topic.

Thanks,
Cristi
 
> Thanks,
> Mani
> 
> > Thanks for reviewing,
> > Cristi
> > 
> > > 
> > > >+
> > > >+  clocks:
> > > >+    maxItems: 1
> > > >+
> > > >+  gpio-controller: true
> > > >+
> > > >+  gpio-ranges:
> > > >+    maxItems: 1
> > > >+
> > > >+  '#gpio-cells':
> > > >+    description:
> > > >+      Specifies the pin number and flags, as defined in
> > > >+      include/dt-bindings/gpio/gpio.h
> > > >+    const: 2
> > > >+
> > > >+  interrupt-controller: true
> > > >+
> > > >+  '#interrupt-cells':
> > > >+    description:
> > > >+      Specifies the pin number and flags, as defined in
> > > >+      include/dt-bindings/interrupt-controller/irq.h
> > > >+    const: 2
> > > >+
> > > >+  interrupts:
> > > >+    description:
> > > >+      One interrupt per each of the 5 GPIO ports supported by the
> > > >controller,
> > > >+      sorted by port number ascending order.
> > > >+    minItems: 5
> > > >+    maxItems: 5
> > > >+
> > > >+patternProperties:
> > > >+  '^.*$':
> > > >+    if:
> > > >+      type: object
> > > >+    then:
> > > >+      patternProperties:
> > > >+        'pinmux$':
> > > >+          type: object
> > > >+          description:
> > > >+            Pinctrl node's client devices specify pin muxes using
> > > >subnodes,
> > > >+            which in turn use the standard properties below.
> > > >+          $ref: pinmux-node.yaml#
> > > >+
> > > >+          properties:
> > > >+            groups:
> > > >+              description:
> > > >+                List of gpio pin groups affected by the functions
> > > >specified in
> > > >+                this subnode.
> > > >+              items:
> > > >+                oneOf:
> > > >+                  - enum: [lcd0_d18_mfp, rmii_crs_dv_mfp,
> > > >rmii_txd0_mfp,
> > > >+                      rmii_txd1_mfp, rmii_txen_mfp, rmii_rxen_mfp,
> > > >+                      rmii_rxd1_mfp, rmii_rxd0_mfp, rmii_ref_clk_mfp,
> > > >+                      i2s_d0_mfp, i2s_pcm1_mfp, i2s0_pcm0_mfp,
> > > >i2s1_pcm0_mfp,
> > > >+                      i2s_d1_mfp, ks_in2_mfp, ks_in1_mfp, ks_in0_mfp,
> > > >+                      ks_in3_mfp, ks_out0_mfp, ks_out1_mfp,
> > > >ks_out2_mfp,
> > > >+                      lvds_o_pn_mfp, dsi_dn0_mfp, dsi_dp2_mfp,
> > > >lcd0_d17_mfp,
> > > >+                      dsi_dp3_mfp, dsi_dn3_mfp, dsi_dp0_mfp,
> > > >lvds_ee_pn_mfp,
> > > >+                      spi0_i2c_pcm_mfp, spi0_i2s_pcm_mfp,
> > > >dsi_dnp1_cp_mfp,
> > > >+                      lvds_e_pn_mfp, dsi_dn2_mfp, uart2_rtsb_mfp,
> > > >+                      uart2_ctsb_mfp, uart3_rtsb_mfp, uart3_ctsb_mfp,
> > > >+                      sd0_d0_mfp, sd0_d1_mfp, sd0_d2_d3_mfp,
> > > >sd1_d0_d3_mfp,
> > > >+                      sd0_cmd_mfp, sd0_clk_mfp, sd1_cmd_mfp,
> > > >uart0_rx_mfp,
> > > >+                      clko_25m_mfp, csi_cn_cp_mfp, sens0_ckout_mfp,
> > > >+                      uart0_tx_mfp, i2c0_mfp, csi_dn_dp_mfp,
> > > >sen0_pclk_mfp,
> > > >+                      pcm1_in_mfp, pcm1_clk_mfp, pcm1_sync_mfp,
> > > >pcm1_out_mfp,
> > > >+                      dnand_data_wr_mfp, dnand_acle_ce0_mfp,
> > > >nand_ceb2_mfp,
> > > >+                      nand_ceb3_mfp]
> > > >+              minItems: 1
> > > >+              maxItems: 32
> > > >+
> > > >+            function:
> > > >+              description:
> > > >+                Specify the alternative function to be configured for
> > > >the
> > > >+                given gpio pin groups.
> > > >+              enum: [nor, eth_rmii, eth_smii, spi0, spi1, spi2, spi3,
> > > >sens0,
> > > >+                sens1, uart0, uart1, uart2, uart3, uart4, uart5,
> > > >uart6, i2s0,
> > > >+                i2s1, pcm1, pcm0, ks, jtag, pwm0, pwm1, pwm2, pwm3,
> > > >pwm4, pwm5,
> > > >+                p0, sd0, sd1, sd2, i2c0, i2c1, i2c3, dsi, lvds, usb30,
> > > >clko_25m,
> > > >+                mipi_csi, nand, spdif, ts, lcd0]
> > > >+
> > > >+          required:
> > > >+            - groups
> > > >+            - function
> > > >+
> > > >+          additionalProperties: false
> > > >+
> > > >+        'pinconf$':
> > > >+          type: object
> > > >+          description:
> > > >+            Pinctrl node's client devices specify pin configurations
> > > >using
> > > >+            subnodes, which in turn use the standard properties below.
> > > >+          $ref: pincfg-node.yaml#
> > > >+
> > > >+          properties:
> > > >+            groups:
> > > >+              description:
> > > >+                List of gpio pin groups affected by the drive-strength
> > > >property
> > > >+                specified in this subnode.
> > > >+              items:
> > > >+                oneOf:
> > > >+                  - enum: [sirq_drv, rmii_txd01_txen_drv,
> > > >rmii_rxer_drv,
> > > >+                      rmii_crs_drv, rmii_rxd10_drv, rmii_ref_clk_drv,
> > > >+                      smi_mdc_mdio_drv, i2s_d0_drv, i2s_bclk0_drv,
> > > >i2s3_drv,
> > > >+                      i2s13_drv, pcm1_drv, ks_in_drv, ks_out_drv,
> > > >lvds_all_drv,
> > > >+                      lcd_dsi_drv, dsi_drv, sd0_d0_d3_drv,
> > > >sd1_d0_d3_drv,
> > > >+                      sd0_cmd_drv, sd0_clk_drv, sd1_cmd_drv,
> > > >sd1_clk_drv,
> > > >+                      spi0_all_drv, uart0_rx_drv, uart0_tx_drv,
> > > >uart2_all_drv,
> > > >+                      i2c0_all_drv, i2c12_all_drv, sens0_pclk_drv,
> > > >+                      sens0_ckout_drv, uart3_all_drv]
> > > >+              minItems: 1
> > > >+              maxItems: 32
> > > >+
> > > >+            pins:
> > > >+              description:
> > > >+                List of gpio pins affected by the bias-pull-* and
> > > >+                input-schmitt-* properties specified in this subnode.
> > > >+              items:
> > > >+                oneOf:
> > > >+                  - enum: [dnand_dqs, dnand_dqsn, eth_txd0, eth_txd1,
> > > >eth_txen,
> > > >+                      eth_rxer, eth_crs_dv, eth_rxd1, eth_rxd0,
> > > >eth_ref_clk,
> > > >+                      eth_mdc, eth_mdio, sirq0, sirq1, sirq2, i2s_d0,
> > > >i2s_bclk0,
> > > >+                      i2s_lrclk0, i2s_mclk0, i2s_d1, i2s_bclk1,
> > > >i2s_lrclk1,
> > > >+                      i2s_mclk1, ks_in0, ks_in1, ks_in2, ks_in3,
> > > >ks_out0,
> > > >+                      ks_out1, ks_out2, lvds_oep, lvds_oen, lvds_odp,
> > > >lvds_odn,
> > > >+                      lvds_ocp, lvds_ocn, lvds_obp, lvds_obn,
> > > >lvds_oap,
> > > >+                      lvds_oan, lvds_eep, lvds_een, lvds_edp,
> > > >lvds_edn,
> > > >+                      lvds_ecp, lvds_ecn, lvds_ebp, lvds_ebn,
> > > >lvds_eap,
> > > >+                      lvds_ean, lcd0_d18, lcd0_d17, dsi_dp3, dsi_dn3,
> > > >dsi_dp1,
> > > >+                      dsi_dn1, dsi_cp, dsi_cn, dsi_dp0, dsi_dn0,
> > > >dsi_dp2,
> > > >+                      dsi_dn2, sd0_d0, sd0_d1, sd0_d2, sd0_d3, sd1_d0,
> > > >sd1_d1,
> > > >+                      sd1_d2, sd1_d3, sd0_cmd, sd0_clk, sd1_cmd,
> > > >sd1_clk,
> > > >+                      spi0_sclk, spi0_ss, spi0_miso, spi0_mosi,
> > > >uart0_rx,
> > > >+                      uart0_tx, i2c0_sclk, i2c0_sdata, sensor0_pclk,
> > > >+                      sensor0_ckout, dnand_ale, dnand_cle, dnand_ceb0,
> > > >+                      dnand_ceb1, dnand_ceb2, dnand_ceb3, uart2_rx,
> > > >uart2_tx,
> > > >+                      uart2_rtsb, uart2_ctsb, uart3_rx, uart3_tx,
> > > >uart3_rtsb,
> > > >+                      uart3_ctsb, pcm1_in, pcm1_clk, pcm1_sync,
> > > >pcm1_out,
> > > >+                      i2c1_sclk, i2c1_sdata, i2c2_sclk, i2c2_sdata,
> > > >csi_dn0,
> > > >+                      csi_dp0, csi_dn1, csi_dp1, csi_dn2, csi_dp2,
> > > >csi_dn3,
> > > >+                      csi_dp3, csi_cn, csi_cp, dnand_d0, dnand_d1,
> > > >dnand_d2,
> > > >+                      dnand_d3, dnand_d4, dnand_d5, dnand_d6,
> > > >dnand_d7,
> > > >+                      dnand_rb, dnand_rdb, dnand_rdbn, dnand_wrb,
> > > >porb,
> > > >+                      clko_25m, bsel, pkg0, pkg1, pkg2, pkg3]
> > > >+              minItems: 1
> > > >+              maxItems: 64
> > > >+
> > > >+            bias-pull-up: true
> > > >+            bias-pull-down: true
> > > >+
> > > >+            drive-strength:
> > > >+              description:
> > > >+                Selects the drive strength for the specified pins, in
> > > >mA.
> > > >+              enum: [2, 4, 8, 12]
> > > >+
> > > >+            input-schmitt-enable: true
> > > >+            input-schmitt-disable: true
> > > >+
> > > >+          additionalProperties: false
> > > >+
> > > >+required:
> > > >+  - compatible
> > > >+  - reg
> > > >+  - clocks
> > > >+  - gpio-controller
> > > >+  - gpio-ranges
> > > >+  - '#gpio-cells'
> > > >+  - interrupt-controller
> > > >+  - '#interrupt-cells'
> > > >+  - interrupts
> > > >+
> > > >+additionalProperties: false
> > > >+
> > > >+examples:
> > > >+  - |
> > > >+    #include <dt-bindings/interrupt-controller/arm-gic.h>
> > > >+    pinctrl: pinctrl@b01b0000 {
> > > >+        compatible = "actions,s500-pinctrl";
> > > >+        reg = <0xe01b0000 0x1000>;
> > > >+        clocks = <&cmu 20>;
> > > >+        gpio-controller;
> > > >+        gpio-ranges = <&pinctrl 0 0 132>;
> > > >+        #gpio-cells = <2>;
> > > >+        interrupt-controller;
> > > >+        #interrupt-cells = <2>;
> > > >+        interrupts = <GIC_SPI 36 IRQ_TYPE_LEVEL_HIGH>,
> > > >+                     <GIC_SPI 37 IRQ_TYPE_LEVEL_HIGH>,
> > > >+                     <GIC_SPI 38 IRQ_TYPE_LEVEL_HIGH>,
> > > >+                     <GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>,
> > > >+                     <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>;
> > > >+
> > > >+        i2c0_default: i2c0_default {
> > > >+            pinmux {
> > > >+                groups = "i2c0_mfp";
> > > >+                function = "i2c0";
> > > >+            };
> > > >+
> > > >+            pinconf {
> > > >+                pins = "i2c0_sclk", "i2c0_sdata";
> > > >+                bias-pull-up;
> > > >+            };
> > > >+        };
> > > >+    };
> > > >+
> > > >+...
> > > 
> > > -- 
> > > Sent from my Android device with K-9 Mail. Please excuse my brevity.
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/pinctrl/actions,s500-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/actions,s500-pinctrl.yaml
new file mode 100644
index 000000000000..856947c70844
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/actions,s500-pinctrl.yaml
@@ -0,0 +1,228 @@ 
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pinctrl/actions,s500-pinctrl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Actions Semi S500 SoC pinmux & GPIO controller
+
+maintainers:
+  - Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
+
+description: |
+  Pinmux & GPIO controller manages pin multiplexing & configuration including
+  GPIO function selection & GPIO attributes configuration. Please refer to
+  pinctrl-bindings.txt in this directory for common binding part and usage.
+
+properties:
+  compatible:
+    const: actions,s500-pinctrl
+
+  reg:
+    minItems: 1
+    maxItems: 4
+
+  clocks:
+    maxItems: 1
+
+  gpio-controller: true
+
+  gpio-ranges:
+    maxItems: 1
+
+  '#gpio-cells':
+    description:
+      Specifies the pin number and flags, as defined in
+      include/dt-bindings/gpio/gpio.h
+    const: 2
+
+  interrupt-controller: true
+
+  '#interrupt-cells':
+    description:
+      Specifies the pin number and flags, as defined in
+      include/dt-bindings/interrupt-controller/irq.h
+    const: 2
+
+  interrupts:
+    description:
+      One interrupt per each of the 5 GPIO ports supported by the controller,
+      sorted by port number ascending order.
+    minItems: 5
+    maxItems: 5
+
+patternProperties:
+  '^.*$':
+    if:
+      type: object
+    then:
+      patternProperties:
+        'pinmux$':
+          type: object
+          description:
+            Pinctrl node's client devices specify pin muxes using subnodes,
+            which in turn use the standard properties below.
+          $ref: pinmux-node.yaml#
+
+          properties:
+            groups:
+              description:
+                List of gpio pin groups affected by the functions specified in
+                this subnode.
+              items:
+                oneOf:
+                  - enum: [lcd0_d18_mfp, rmii_crs_dv_mfp, rmii_txd0_mfp,
+                      rmii_txd1_mfp, rmii_txen_mfp, rmii_rxen_mfp,
+                      rmii_rxd1_mfp, rmii_rxd0_mfp, rmii_ref_clk_mfp,
+                      i2s_d0_mfp, i2s_pcm1_mfp, i2s0_pcm0_mfp, i2s1_pcm0_mfp,
+                      i2s_d1_mfp, ks_in2_mfp, ks_in1_mfp, ks_in0_mfp,
+                      ks_in3_mfp, ks_out0_mfp, ks_out1_mfp, ks_out2_mfp,
+                      lvds_o_pn_mfp, dsi_dn0_mfp, dsi_dp2_mfp, lcd0_d17_mfp,
+                      dsi_dp3_mfp, dsi_dn3_mfp, dsi_dp0_mfp, lvds_ee_pn_mfp,
+                      spi0_i2c_pcm_mfp, spi0_i2s_pcm_mfp, dsi_dnp1_cp_mfp,
+                      lvds_e_pn_mfp, dsi_dn2_mfp, uart2_rtsb_mfp,
+                      uart2_ctsb_mfp, uart3_rtsb_mfp, uart3_ctsb_mfp,
+                      sd0_d0_mfp, sd0_d1_mfp, sd0_d2_d3_mfp, sd1_d0_d3_mfp,
+                      sd0_cmd_mfp, sd0_clk_mfp, sd1_cmd_mfp, uart0_rx_mfp,
+                      clko_25m_mfp, csi_cn_cp_mfp, sens0_ckout_mfp,
+                      uart0_tx_mfp, i2c0_mfp, csi_dn_dp_mfp, sen0_pclk_mfp,
+                      pcm1_in_mfp, pcm1_clk_mfp, pcm1_sync_mfp, pcm1_out_mfp,
+                      dnand_data_wr_mfp, dnand_acle_ce0_mfp, nand_ceb2_mfp,
+                      nand_ceb3_mfp]
+              minItems: 1
+              maxItems: 32
+
+            function:
+              description:
+                Specify the alternative function to be configured for the
+                given gpio pin groups.
+              enum: [nor, eth_rmii, eth_smii, spi0, spi1, spi2, spi3, sens0,
+                sens1, uart0, uart1, uart2, uart3, uart4, uart5, uart6, i2s0,
+                i2s1, pcm1, pcm0, ks, jtag, pwm0, pwm1, pwm2, pwm3, pwm4, pwm5,
+                p0, sd0, sd1, sd2, i2c0, i2c1, i2c3, dsi, lvds, usb30, clko_25m,
+                mipi_csi, nand, spdif, ts, lcd0]
+
+          required:
+            - groups
+            - function
+
+          additionalProperties: false
+
+        'pinconf$':
+          type: object
+          description:
+            Pinctrl node's client devices specify pin configurations using
+            subnodes, which in turn use the standard properties below.
+          $ref: pincfg-node.yaml#
+
+          properties:
+            groups:
+              description:
+                List of gpio pin groups affected by the drive-strength property
+                specified in this subnode.
+              items:
+                oneOf:
+                  - enum: [sirq_drv, rmii_txd01_txen_drv, rmii_rxer_drv,
+                      rmii_crs_drv, rmii_rxd10_drv, rmii_ref_clk_drv,
+                      smi_mdc_mdio_drv, i2s_d0_drv, i2s_bclk0_drv, i2s3_drv,
+                      i2s13_drv, pcm1_drv, ks_in_drv, ks_out_drv, lvds_all_drv,
+                      lcd_dsi_drv, dsi_drv, sd0_d0_d3_drv, sd1_d0_d3_drv,
+                      sd0_cmd_drv, sd0_clk_drv, sd1_cmd_drv, sd1_clk_drv,
+                      spi0_all_drv, uart0_rx_drv, uart0_tx_drv, uart2_all_drv,
+                      i2c0_all_drv, i2c12_all_drv, sens0_pclk_drv,
+                      sens0_ckout_drv, uart3_all_drv]
+              minItems: 1
+              maxItems: 32
+
+            pins:
+              description:
+                List of gpio pins affected by the bias-pull-* and
+                input-schmitt-* properties specified in this subnode.
+              items:
+                oneOf:
+                  - enum: [dnand_dqs, dnand_dqsn, eth_txd0, eth_txd1, eth_txen,
+                      eth_rxer, eth_crs_dv, eth_rxd1, eth_rxd0, eth_ref_clk,
+                      eth_mdc, eth_mdio, sirq0, sirq1, sirq2, i2s_d0, i2s_bclk0,
+                      i2s_lrclk0, i2s_mclk0, i2s_d1, i2s_bclk1, i2s_lrclk1,
+                      i2s_mclk1, ks_in0, ks_in1, ks_in2, ks_in3, ks_out0,
+                      ks_out1, ks_out2, lvds_oep, lvds_oen, lvds_odp, lvds_odn,
+                      lvds_ocp, lvds_ocn, lvds_obp, lvds_obn, lvds_oap,
+                      lvds_oan, lvds_eep, lvds_een, lvds_edp, lvds_edn,
+                      lvds_ecp, lvds_ecn, lvds_ebp, lvds_ebn, lvds_eap,
+                      lvds_ean, lcd0_d18, lcd0_d17, dsi_dp3, dsi_dn3, dsi_dp1,
+                      dsi_dn1, dsi_cp, dsi_cn, dsi_dp0, dsi_dn0, dsi_dp2,
+                      dsi_dn2, sd0_d0, sd0_d1, sd0_d2, sd0_d3, sd1_d0, sd1_d1,
+                      sd1_d2, sd1_d3, sd0_cmd, sd0_clk, sd1_cmd, sd1_clk,
+                      spi0_sclk, spi0_ss, spi0_miso, spi0_mosi, uart0_rx,
+                      uart0_tx, i2c0_sclk, i2c0_sdata, sensor0_pclk,
+                      sensor0_ckout, dnand_ale, dnand_cle, dnand_ceb0,
+                      dnand_ceb1, dnand_ceb2, dnand_ceb3, uart2_rx, uart2_tx,
+                      uart2_rtsb, uart2_ctsb, uart3_rx, uart3_tx, uart3_rtsb,
+                      uart3_ctsb, pcm1_in, pcm1_clk, pcm1_sync, pcm1_out,
+                      i2c1_sclk, i2c1_sdata, i2c2_sclk, i2c2_sdata, csi_dn0,
+                      csi_dp0, csi_dn1, csi_dp1, csi_dn2, csi_dp2, csi_dn3,
+                      csi_dp3, csi_cn, csi_cp, dnand_d0, dnand_d1, dnand_d2,
+                      dnand_d3, dnand_d4, dnand_d5, dnand_d6, dnand_d7,
+                      dnand_rb, dnand_rdb, dnand_rdbn, dnand_wrb, porb,
+                      clko_25m, bsel, pkg0, pkg1, pkg2, pkg3]
+              minItems: 1
+              maxItems: 64
+
+            bias-pull-up: true
+            bias-pull-down: true
+
+            drive-strength:
+              description:
+                Selects the drive strength for the specified pins, in mA.
+              enum: [2, 4, 8, 12]
+
+            input-schmitt-enable: true
+            input-schmitt-disable: true
+
+          additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - gpio-controller
+  - gpio-ranges
+  - '#gpio-cells'
+  - interrupt-controller
+  - '#interrupt-cells'
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    pinctrl: pinctrl@b01b0000 {
+        compatible = "actions,s500-pinctrl";
+        reg = <0xe01b0000 0x1000>;
+        clocks = <&cmu 20>;
+        gpio-controller;
+        gpio-ranges = <&pinctrl 0 0 132>;
+        #gpio-cells = <2>;
+        interrupt-controller;
+        #interrupt-cells = <2>;
+        interrupts = <GIC_SPI 36 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 37 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 38 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>;
+
+        i2c0_default: i2c0_default {
+            pinmux {
+                groups = "i2c0_mfp";
+                function = "i2c0";
+            };
+
+            pinconf {
+                pins = "i2c0_sclk", "i2c0_sdata";
+                bias-pull-up;
+            };
+        };
+    };
+
+...