[v3,1/2] dt-bindings: i2c: Add Spreadtrum I2C controller documentation

Submitted by Baolin Wang on June 26, 2017, 10:28 a.m.

Details

Message ID 2083c9d6e96a72f9c1324c8a277acfd780a34094.1498472593.git.baolin.wang@spreadtrum.com
State New
Headers show

Commit Message

Baolin Wang June 26, 2017, 10:28 a.m.
This patch adds the binding documentation for Spreadtrum I2C
controller device.

Signed-off-by: Baolin Wang <baolin.wang@spreadtrum.com>
---
Changes since v2:
 - Change compatible strings to be SoC specific.

Changes since v1:
 - No updates.
---
 Documentation/devicetree/bindings/i2c/i2c-sprd.txt |   31 ++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/i2c/i2c-sprd.txt

Comments

Rob Herring June 26, 2017, 2:05 p.m.
On Mon, Jun 26, 2017 at 5:28 AM, Baolin Wang <baolin.wang@spreadtrum.com> wrote:
> This patch adds the binding documentation for Spreadtrum I2C
> controller device.
>
> Signed-off-by: Baolin Wang <baolin.wang@spreadtrum.com>
> ---
> Changes since v2:
>  - Change compatible strings to be SoC specific.
>
> Changes since v1:
>  - No updates.
> ---
>  Documentation/devicetree/bindings/i2c/i2c-sprd.txt |   31 ++++++++++++++++++++
>  1 file changed, 31 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/i2c/i2c-sprd.txt

Acked-by: Rob Herring <robh@kernel.org>
Baolin Wang June 27, 2017, 8 a.m.
On 一,  6月 26, 2017 at 09:05:39上午 -0500, Rob Herring wrote:
> On Mon, Jun 26, 2017 at 5:28 AM, Baolin Wang <baolin.wang@spreadtrum.com> wrote:
> > This patch adds the binding documentation for Spreadtrum I2C
> > controller device.
> >
> > Signed-off-by: Baolin Wang <baolin.wang@spreadtrum.com>
> > ---
> > Changes since v2:
> >  - Change compatible strings to be SoC specific.
> >
> > Changes since v1:
> >  - No updates.
> > ---
> >  Documentation/devicetree/bindings/i2c/i2c-sprd.txt |   31 ++++++++++++++++++++
> >  1 file changed, 31 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/i2c/i2c-sprd.txt
> 
> Acked-by: Rob Herring <robh@kernel.org>

Thanks Rob.

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diff --git a/Documentation/devicetree/bindings/i2c/i2c-sprd.txt b/Documentation/devicetree/bindings/i2c/i2c-sprd.txt
new file mode 100644
index 0000000..60b7cda
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/i2c-sprd.txt
@@ -0,0 +1,31 @@ 
+I2C for Spreadtrum platforms
+
+Required properties:
+- compatible: Should be "sprd,sc9860-i2c".
+- reg: Specify the physical base address of the controller and length
+  of memory mapped region.
+- interrupts: Should contain I2C interrupt.
+- clock-names: Should contain following entries:
+  "i2c" for I2C clock,
+  "source" for I2C source (parent) clock,
+  "enable" for I2C module enable clock.
+- clocks: Should contain a clock specifier for each entry in clock-names.
+- clock-frequency: Constains desired I2C bus clock frequency in Hz.
+- #address-cells: Should be 1 to describe address cells for I2C device address.
+- #size-cells: Should be 0 means no size cell for I2C device address.
+
+Optional properties:
+- Child nodes conforming to I2C bus binding
+
+Examples:
+i2c0: i2c@70500000 {
+	compatible = "sprd,sc9860-i2c";
+	reg = <0 0x70500000 0 0x1000>;
+	interrupts = <GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>;
+	clock-names = "i2c", "source", "enable";
+	clocks = <&clk_i2c3>, <&ext_26m>, <&clk_ap_apb_gates 11>;
+	clock-frequency = <400000>;
+	#address-cells = <1>;
+	#size-cells = <0>;
+};
+