diff mbox series

[v13,2/3] dt-bindings: hwmon: Support Aspeed g6 PWM TACH Control

Message ID 20240124060705.1342461-3-billy_tsai@aspeedtech.com
State Superseded, archived
Headers show
Series Support pwm/tach driver for aspeed ast26xx | expand

Commit Message

Billy Tsai Jan. 24, 2024, 6:07 a.m. UTC
Document the compatible for aspeed,ast2600-pwm-tach device, which can
support up to 16 PWM outputs and 16 fan tach input.

Signed-off-by: Billy Tsai <billy_tsai@aspeedtech.com>
---
 .../bindings/hwmon/aspeed,g6-pwm-tach.yaml    | 73 +++++++++++++++++++
 1 file changed, 73 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/hwmon/aspeed,g6-pwm-tach.yaml

Comments

Rob Herring (Arm) Jan. 24, 2024, 7:39 a.m. UTC | #1
On Wed, 24 Jan 2024 14:07:04 +0800, Billy Tsai wrote:
> Document the compatible for aspeed,ast2600-pwm-tach device, which can
> support up to 16 PWM outputs and 16 fan tach input.
> 
> Signed-off-by: Billy Tsai <billy_tsai@aspeedtech.com>
> ---
>  .../bindings/hwmon/aspeed,g6-pwm-tach.yaml    | 73 +++++++++++++++++++
>  1 file changed, 73 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/hwmon/aspeed,g6-pwm-tach.yaml
> 

My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
on your patch (DT_CHECKER_FLAGS is new in v5.13):

yamllint warnings/errors:

dtschema/dtc warnings/errors:
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/hwmon/aspeed,g6-pwm-tach.example.dtb: pwm-tach-controller@1e610000: fan-0: Unevaluated properties are not allowed ('compatible' was unexpected)
	from schema $id: http://devicetree.org/schemas/hwmon/aspeed,g6-pwm-tach.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/hwmon/aspeed,g6-pwm-tach.example.dtb: pwm-tach-controller@1e610000: fan-1: Unevaluated properties are not allowed ('compatible' was unexpected)
	from schema $id: http://devicetree.org/schemas/hwmon/aspeed,g6-pwm-tach.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/hwmon/aspeed,g6-pwm-tach.example.dtb: fan-0: 'tach-ch' does not match any of the regexes: 'pinctrl-[0-9]+'
	from schema $id: http://devicetree.org/schemas/hwmon/pwm-fan.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/hwmon/aspeed,g6-pwm-tach.example.dtb: fan-1: 'tach-ch' does not match any of the regexes: 'pinctrl-[0-9]+'
	from schema $id: http://devicetree.org/schemas/hwmon/pwm-fan.yaml#

doc reference errors (make refcheckdocs):

See https://patchwork.ozlabs.org/project/devicetree-bindings/patch/20240124060705.1342461-3-billy_tsai@aspeedtech.com

The base for the series is generally the latest rc1. A different dependency
should be noted in *this* patch.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit after running the above command yourself. Note
that DT_SCHEMA_FILES can be set to your schema file to speed up checking
your schema. However, it must be unset to test all examples with your schema.
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/hwmon/aspeed,g6-pwm-tach.yaml b/Documentation/devicetree/bindings/hwmon/aspeed,g6-pwm-tach.yaml
new file mode 100644
index 000000000000..7d2b020ec693
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwmon/aspeed,g6-pwm-tach.yaml
@@ -0,0 +1,73 @@ 
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) 2023 Aspeed, Inc.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/hwmon/aspeed,g6-pwm-tach.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ASPEED G6 PWM and Fan Tach controller
+
+maintainers:
+  - Billy Tsai <billy_tsai@aspeedtech.com>
+
+description: |
+  The ASPEED PWM controller can support up to 16 PWM outputs.
+  The ASPEED Fan Tacho controller can support up to 16 fan tach input.
+  They are independent hardware blocks, which are different from the
+  previous version of the ASPEED chip.
+
+properties:
+  compatible:
+    enum:
+      - aspeed,ast2600-pwm-tach
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  resets:
+    maxItems: 1
+
+  "#pwm-cells":
+    const: 3
+
+patternProperties:
+  "^fan-[0-9]+$":
+    $ref: fan-common.yaml#
+    unevaluatedProperties: false
+    required:
+      - tach-ch
+
+required:
+  - reg
+  - clocks
+  - resets
+  - "#pwm-cells"
+  - compatible
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/aspeed-clock.h>
+    pwm_tach: pwm-tach-controller@1e610000 {
+      compatible = "aspeed,ast2600-pwm-tach";
+      reg = <0x1e610000 0x100>;
+      clocks = <&syscon ASPEED_CLK_AHB>;
+      resets = <&syscon ASPEED_RESET_PWM>;
+      #pwm-cells = <3>;
+
+      fan-0 {
+        tach-ch = /bits/ 8 <0x0>;
+        compatible = "pwm-fan";
+        pwms = <&pwm_tach 0 40000 0>;
+      };
+
+      fan-1 {
+        tach-ch = /bits/ 8 <0x1 0x2>;
+        compatible = "pwm-fan";
+        pwms = <&pwm_tach 1 40000 0>;
+      };
+    };