[2/4] dt-bindings: Add bindings for aspeed pwm

Commit Message

Billy Tsai April 12, 2021, 9:54 a.m. UTC

This patch adds device bindings for aspeed pwm device which should be
the sub-node of aspeed,ast2600-pwm-tach.

Signed-off-by: Billy Tsai <[e-mail]>
---
 .../bindings/pwm/aspeed,ast2600-pwm.yaml      | 47 +++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pwm/aspeed,ast2600-pwm.yaml

Comments

Rob Herring (Arm) April 12, 2021, 1:20 p.m. UTC | #1

On Mon, 12 Apr 2021 17:54:55 +0800, Billy Tsai wrote:
> This patch adds device bindings for aspeed pwm device which should be
> the sub-node of aspeed,ast2600-pwm-tach.
> 
> Signed-off-by: Billy Tsai <[e-mail]>
> ---
>  .../bindings/pwm/aspeed,ast2600-pwm.yaml      | 47 +++++++++++++++++++
>  1 file changed, 47 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/pwm/aspeed,ast2600-pwm.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/linux-dt-review/Documentation/devicetree/bindings/pwm/aspeed,ast2600-pwm.yaml: Additional properties are not allowed ('pwm-cells' was unexpected)
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/pwm/aspeed,ast2600-pwm.yaml: Additional properties are not allowed ('pwm-cells' was unexpected)
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/pwm/aspeed,ast2600-pwm.yaml: ignoring, error in schema: 
warning: no schema found in file: ./Documentation/devicetree/bindings/pwm/aspeed,ast2600-pwm.yaml
Documentation/devicetree/bindings/pwm/aspeed,ast2600-pwm.example.dt.yaml:0:0: /example-0/pwm_tach@1e610000: failed to match any schema with compatible: ['aspeed,ast2600-pwm-tach', 'simple-mfd', 'syscon']
Documentation/devicetree/bindings/pwm/aspeed,ast2600-pwm.example.dt.yaml:0:0: /example-0/pwm_tach@1e610000/pwm@0: failed to match any schema with compatible: ['aspeed,ast2600-pwm']

See https://patchwork.ozlabs.org/patch/1465116

This check can fail if there are any dependencies. The base for a patch
series is generally the most recent rc1.

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.

Billy Tsai April 13, 2021, 7:27 a.m. UTC | #2

Hi Rob,

Best Regards,
Billy Tsai

On 2021/4/12, 9:20 PM,Rob Herringwrote:

    On Mon, 12 Apr 2021 17:54:55 +0800, Billy Tsai wrote:
    >> This patch adds device bindings for aspeed pwm device which should be
    >> the sub-node of aspeed,ast2600-pwm-tach.
    >> 
    >> Signed-off-by: Billy Tsai <[e-mail]>
    >> ---
    >>  .../bindings/pwm/aspeed,ast2600-pwm.yaml      | 47 +++++++++++++++++++
    >>  1 file changed, 47 insertions(+)
    >>  create mode 100644 Documentation/devicetree/bindings/pwm/aspeed,ast2600-pwm.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/linux-dt-review/Documentation/devicetree/bindings/pwm/aspeed,ast2600-pwm.yaml: Additional properties are not allowed ('pwm-cells' was unexpected)
    > /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/pwm/aspeed,ast2600-pwm.yaml: Additional properties are not allowed ('pwm-cells' was unexpected)
    > /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/pwm/aspeed,ast2600-pwm.yaml: ignoring, error in schema: 
    > warning: no schema found in file: ./Documentation/devicetree/bindings/pwm/aspeed,ast2600-pwm.yaml
    > Documentation/devicetree/bindings/pwm/aspeed,ast2600-pwm.example.dt.yaml:0:0: /example-0/pwm_tach@1e610000: failed to match any schema with compatible: ['aspeed,ast2600-pwm-tach', 'simple-mfd', 'syscon']
    > Documentation/devicetree/bindings/pwm/aspeed,ast2600-pwm.example.dt.yaml:0:0: /example-0/pwm_tach@1e610000/pwm@0: failed to match any schema with compatible: ['aspeed,ast2600-pwm']

The yaml file have dependencies with the first patch in these series. I will squash them.

    > See https://patchwork.ozlabs.org/patch/1465116

    > This check can fail if there are any dependencies. The base for a patch
    > series is generally the most recent rc1.

    > 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.

Patch

diff --git a/Documentation/devicetree/bindings/pwm/aspeed,ast2600-pwm.yaml b/Documentation/devicetree/bindings/pwm/aspeed,ast2600-pwm.yaml
new file mode 100644
index 000000000000..7a7ff0260d27
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/aspeed,ast2600-pwm.yaml
@@ -0,0 +1,47 @@ 
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) 2021 ASPEED, Inc.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/aspeed,ast2600-pwm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ASPEED AST2600 PWM controller
+
+maintainers:
+  - Billy Tsai <[e-mail]>
+
+description: |
+  The ASPEED PWM controller can support upto 16 PWM outputs.
+
+properties:
+  compatible:
+    enum:
+      - aspeed,ast2600-pwm
+
+  "#pwm-cells":
+    const: 3
+
+pwm-cells:
+  - channel
+# period in terms of nanoseconds
+  - period
+# PWM_POLARITY_INVERTED
+  - flag
+
+additionalProperties: false
+
+examples:
+  - |
+    // The PWM should be a subnode of a "aspeed,ast2600-pwn-tach" compatible node.
+    pwm_tach@1e610000 {
+      compatible = "aspeed,ast2600-pwm-tach", "simple-mfd", "syscon";
+      #address-cells = <1>;
+      #size-cells = <1>;
+      reg = <0x1e610000 0x100>;
+      ranges = <0 0x1e610000 0x100>;
+      pwm: pwm@0 {
+        compatible = "aspeed,ast2600-pwm";
+        #pwm-cells = <3>;
+        reg = <0x0 0x100>;
+      };
+    };