diff mbox series

[v7,1/2] dt-bindings: hwmon: Support Aspeed g6 PWM TACH Control

Message ID 20230817120029.221484-2-billy_tsai@aspeedtech.com (mailing list archive)
State Superseded
Headers show
Series Support pwm/tach driver for aspeed ast26xx | expand

Commit Message

Billy Tsai Aug. 17, 2023, noon UTC
Document the compatible for aspeed,ast2600-pwm-tach device, which can
support upto 16 PWM outputs and 16 fan tach input.

Signed-off-by: Billy Tsai <billy_tsai@aspeedtech.com>
---
 .../bindings/hwmon/aspeed,g6-pwm-tach.yaml    | 57 +++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/hwmon/aspeed,g6-pwm-tach.yaml

Comments

Rob Herring (Arm) Aug. 23, 2023, 1:13 p.m. UTC | #1
On Thu, Aug 17, 2023 at 08:00:28PM +0800, Billy Tsai wrote:
> Document the compatible for aspeed,ast2600-pwm-tach device, which can
> support upto 16 PWM outputs and 16 fan tach input.
> 
> Signed-off-by: Billy Tsai <billy_tsai@aspeedtech.com>
> ---
>  .../bindings/hwmon/aspeed,g6-pwm-tach.yaml    | 57 +++++++++++++++++++
>  1 file changed, 57 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/hwmon/aspeed,g6-pwm-tach.yaml
> 
> 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..1666304d0b0f
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/hwmon/aspeed,g6-pwm-tach.yaml
> @@ -0,0 +1,57 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +# Copyright (C) 2021 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 device driver
> +
> +maintainers:
> +  - Billy Tsai <billy_tsai@aspeedtech.com>
> +
> +description: |
> +  The ASPEED PWM controller can support upto 16 PWM outputs.
> +  The ASPEED Fan Tacho controller can support upto 16 fan tach input.
> +
> +properties:
> +  compatible:
> +    enum:
> +      - aspeed,ast2600-pwm-tach
> +
> +  reg:
> +    maxItems: 1
> +
> +  clocks:
> +    maxItems: 1
> +
> +  resets:
> +    maxItems: 1
> +
> +  "#pwm-cells":
> +    const: 3
> +
> +  aspeed,fan-tach-ch:
> +    description: Specify the Fan tach input channels.
> +    $ref: "/schemas/types.yaml#/definitions/uint8-array"

This property is already defined in aspeed-pwm-tacho.txt as a single u8 
that goes in a fan node. You can't redefine its type and location here.

To repeat what I've said in previous versions, work with others to 
define a common fan and fan controller binding. Otherwise, anything new 
with fan related properties is simply going to be rejected.

Rob
Billy Tsai Aug. 28, 2023, 5:33 a.m. UTC | #2
On Thu, Aug 17, 2023 at 08:00:28PM +0800, Billy Tsai wrote:
>> Document the compatible for aspeed,ast2600-pwm-tach device, which can
>> support upto 16 PWM outputs and 16 fan tach input.
>>
>> Signed-off-by: Billy Tsai <billy_tsai@aspeedtech.com>
>> ---
>>  .../bindings/hwmon/aspeed,g6-pwm-tach.yaml    | 57 +++++++++++++++++++
>>  1 file changed, 57 insertions(+)
>>  create mode 100644 Documentation/devicetree/bindings/hwmon/aspeed,g6-pwm-tach.yaml
>>
>> 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..1666304d0b0f
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/hwmon/aspeed,g6-pwm-tach.yaml
>> @@ -0,0 +1,57 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +# Copyright (C) 2021 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 device driver
>> +
>> +maintainers:
>> +  - Billy Tsai <billy_tsai@aspeedtech.com>
>> +
>> +description: |
>> +  The ASPEED PWM controller can support upto 16 PWM outputs.
>> +  The ASPEED Fan Tacho controller can support upto 16 fan tach input.
>> +
>> +properties:
>> +  compatible:
>> +    enum:
>> +      - aspeed,ast2600-pwm-tach
>> +
>> +  reg:
>> +    maxItems: 1
>> +
>> +  clocks:
>> +    maxItems: 1
>> +
>> +  resets:
>> +    maxItems: 1
>> +
>> +  "#pwm-cells":
>> +    const: 3
>> +
>> +  aspeed,fan-tach-ch:
>> +    description: Specify the Fan tach input channels.
>> +    $ref: "/schemas/types.yaml#/definitions/uint8-array"
 
>This property is already defined in aspeed-pwm-tacho.txt as a single u8
>that goes in a fan node. You can't redefine its type and location here.
 
Hi Rob,
 
I didn't redefine the type of property. The type of the aspeed,fan-tach-ch is unit8-array
in aspeed-pwm-tacho.txt.
https://github.com/torvalds/linux/blob/master/Documentation/devicetree/bindings/hwmon/aspeed-pwm-tacho.txt#L48
https://github.com/torvalds/linux/blob/master/Documentation/devicetree/bindings/hwmon/aspeed-pwm-tacho.txt#L71
 
>To repeat what I've said in previous versions, work with others to
>define a common fan and fan controller binding. Otherwise, anything new
>with fan related properties is simply going to be rejected.
 
Okay I will try to work with Naresh for defining a common fan binding.
 
Thanks for your suggestion.
 
Hi Naresh,
 
As Rob mentioned, it would be advisable for my dt-bindings to reference the common fan bindings instead of introducing specific properties.
I noticed that you have already submitted a related patch to the community, which seems to be pending for around 10 months.
https://lore.kernel.org/lkml/20221116213615.1256297-2-Naresh.Solanki@9elements.com/
Do you have plans to send the next version of the patch? Alternatively, can I proceed to cherry-pick this version of the patch and continue with
the upstreaming process in my patch serial?
 
Thanks
Best Regards,
Billy Tsai
Naresh Solanki Aug. 28, 2023, 7:53 a.m. UTC | #3
Hi Billy,


On Mon, 28 Aug 2023 at 09:33, Billy Tsai <billy_tsai@aspeedtech.com> wrote:
>
> On Thu, Aug 17, 2023 at 08:00:28PM +0800, Billy Tsai wrote:
>
> >> Document the compatible for aspeed,ast2600-pwm-tach device, which can
>
> >> support upto 16 PWM outputs and 16 fan tach input.
>
> >>
>
> >> Signed-off-by: Billy Tsai <billy_tsai@aspeedtech.com>
>
> >> ---
>
> >>  .../bindings/hwmon/aspeed,g6-pwm-tach.yaml    | 57 +++++++++++++++++++
>
> >>  1 file changed, 57 insertions(+)
>
> >>  create mode 100644 Documentation/devicetree/bindings/hwmon/aspeed,g6-pwm-tach.yaml
>
> >>
>
> >> 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..1666304d0b0f
>
> >> --- /dev/null
>
> >> +++ b/Documentation/devicetree/bindings/hwmon/aspeed,g6-pwm-tach.yaml
>
> >> @@ -0,0 +1,57 @@
>
> >> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>
> >> +# Copyright (C) 2021 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 device driver
>
> >> +
>
> >> +maintainers:
>
> >> +  - Billy Tsai <billy_tsai@aspeedtech.com>
>
> >> +
>
> >> +description: |
>
> >> +  The ASPEED PWM controller can support upto 16 PWM outputs.
>
> >> +  The ASPEED Fan Tacho controller can support upto 16 fan tach input.
>
> >> +
>
> >> +properties:
>
> >> +  compatible:
>
> >> +    enum:
>
> >> +      - aspeed,ast2600-pwm-tach
>
> >> +
>
> >> +  reg:
>
> >> +    maxItems: 1
>
> >> +
>
> >> +  clocks:
>
> >> +    maxItems: 1
>
> >> +
>
> >> +  resets:
>
> >> +    maxItems: 1
>
> >> +
>
> >> +  "#pwm-cells":
>
> >> +    const: 3
>
> >> +
>
> >> +  aspeed,fan-tach-ch:
>
> >> +    description: Specify the Fan tach input channels.
>
> >> +    $ref: "/schemas/types.yaml#/definitions/uint8-array"
>
>
>
> >This property is already defined in aspeed-pwm-tacho.txt as a single u8
>
> >that goes in a fan node. You can't redefine its type and location here.
>
>
>
> Hi Rob,
>
>
>
> I didn't redefine the type of property. The type of the aspeed,fan-tach-ch is unit8-array
>
> in aspeed-pwm-tacho.txt.
>
> https://github.com/torvalds/linux/blob/master/Documentation/devicetree/bindings/hwmon/aspeed-pwm-tacho.txt#L48
>
> https://github.com/torvalds/linux/blob/master/Documentation/devicetree/bindings/hwmon/aspeed-pwm-tacho.txt#L71
>
>
>
> >To repeat what I've said in previous versions, work with others to
>
> >define a common fan and fan controller binding. Otherwise, anything new
>
> >with fan related properties is simply going to be rejected.
>
>
>
> Okay I will try to work with Naresh for defining a common fan binding.
>
>
>
> Thanks for your suggestion.
>
>
>
> Hi Naresh,
>
>
>
> As Rob mentioned, it would be advisable for my dt-bindings to reference the common fan bindings instead of introducing specific properties.
>
> I noticed that you have already submitted a related patch to the community, which seems to be pending for around 10 months.
>
> https://lore.kernel.org/lkml/20221116213615.1256297-2-Naresh.Solanki@9elements.com/
>
> Do you have plans to send the next version of the patch? Alternatively, can I proceed to cherry-pick this version of the patch and continue with
>
> the upstreaming process in my patch serial?
Sure, go ahead.

Regards,
Naresh
>
>
>
> Thanks
>
> Best Regards,
>
> Billy Tsai
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..1666304d0b0f
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwmon/aspeed,g6-pwm-tach.yaml
@@ -0,0 +1,57 @@ 
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) 2021 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 device driver
+
+maintainers:
+  - Billy Tsai <billy_tsai@aspeedtech.com>
+
+description: |
+  The ASPEED PWM controller can support upto 16 PWM outputs.
+  The ASPEED Fan Tacho controller can support upto 16 fan tach input.
+
+properties:
+  compatible:
+    enum:
+      - aspeed,ast2600-pwm-tach
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  resets:
+    maxItems: 1
+
+  "#pwm-cells":
+    const: 3
+
+  aspeed,fan-tach-ch:
+    description: Specify the Fan tach input channels.
+    $ref: "/schemas/types.yaml#/definitions/uint8-array"
+
+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>;
+      aspeed,fan-tach-ch = /bits/ 8 <0x00 0x02 0x4>;
+    };