linux-kernel - Re: [PATCH 1/2] dt-bindings: hwmon: pwm-fan: Convert to DT schema

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Date:   Mon, 3 Apr 2023 17:32:35 +0300
From:   Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
To:     Rob Herring <robh@...nel.org>
Cc:     kernel@...labora.com, linux-arm-kernel@...ts.infradead.org,
        Rob Herring <robh+dt@...nel.org>, linux-hwmon@...r.kernel.org,
        Guenter Roeck <linux@...ck-us.net>,
        linux-rockchip@...ts.infradead.org, devicetree@...r.kernel.org,
        Jean Delvare <jdelvare@...e.com>,
        Heiko Stuebner <heiko@...ech.de>, linux-kernel@...r.kernel.org,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Subject: Re: [PATCH 1/2] dt-bindings: hwmon: pwm-fan: Convert to DT schema

On 4/3/23 16:10, Rob Herring wrote:
> 
> On Mon, 03 Apr 2023 13:50:51 +0300, Cristian Ciocaltea wrote:
>> Convert the PWM fan bindings to DT schema format.
>>
>> Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
>> ---
>>   .../devicetree/bindings/hwmon/pwm-fan.txt     |  68 +----------
>>   .../devicetree/bindings/hwmon/pwm-fan.yaml    | 109 ++++++++++++++++++
>>   2 files changed, 110 insertions(+), 67 deletions(-)
>>   create mode 100644 Documentation/devicetree/bindings/hwmon/pwm-fan.yaml
>>
> 
> Running 'make dtbs_check' with the schema in this patch gives the
> following warnings. Consider if they are expected or the schema is
> incorrect. These may not be new warnings.
> 
> Note that it is not yet a requirement to have 0 warnings for dtbs_check.
> This will change in the future.
> 
> Full log is available here: https://patchwork.ozlabs.org/project/devicetree-bindings/patch/20230403105052.426135-2-cristian.ciocaltea@collabora.com
> 
> 
> pwm-fan: 'cooling-max-state', 'cooling-min-state' do not match any of the regexes: 'pinctrl-[0-9]+'
> 	arch/arm64/boot/dts/amlogic/meson-sm1-odroid-hc4.dtb
> 	arch/arm64/boot/dts/freescale/fsl-ls1028a-kontron-sl28-var3-ads2.dtb
> 

The only references to the offending cooling-{min|max}-state are located 
in a few DTS files. Assuming they are obsolete, may I simply drop them?

$ git grep "cooling-.*-state"

arch/arm64/boot/dts/amlogic/meson-g12b-bananapi.dtsi: cooling-min-state = <0>;
arch/arm64/boot/dts/amlogic/meson-g12b-bananapi.dtsi: cooling-max-state = <3>;
arch/arm64/boot/dts/amlogic/meson-sm1-odroid-hc4.dts: cooling-min-state = <0>;
arch/arm64/boot/dts/amlogic/meson-sm1-odroid-hc4.dts: cooling-max-state = <3>;
arch/arm64/boot/dts/freescale/fsl-ls1028a-kontron-sl28-var3-ads2.dts:        cooling-min-state = <0>;
arch/arm64/boot/dts/freescale/fsl-ls1028a-kontron-sl28-var3-ads2.dts:        cooling-max-state = <3>;
arch/arm64/boot/dts/freescale/fsl-lx2160a-cex7.dtsi:        cooling-min-state = <0>;
arch/arm64/boot/dts/freescale/fsl-lx2160a-cex7.dtsi:        cooling-max-state = <9>;