linux-kernel - Re: [PATCH v1 1/2] arm64: dts: mediatek: mt7622: Add missing pwm-cells to pwm node

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Message-ID: <fe2e5a9c-2505-5a95-d65a-bac387f4ea71@gmail.com>
Date:   Thu, 19 Jan 2023 18:33:32 +0100
From:   Matthias Brugger <matthias.bgg@...il.com>
To:     Uwe Kleine-König <u.kleine-koenig@...gutronix.de>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        thierry.reding@...il.com, krzysztof.kozlowski+dt@...aro.org
Cc:     robh+dt@...nel.org, john@...ozen.org, sean.wang@...iatek.com,
        linux-pwm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH v1 1/2] arm64: dts: mediatek: mt7622: Add missing
 pwm-cells to pwm node



On 17/01/2023 22:39, Uwe Kleine-König wrote:
> Hello,
> 
> On Fri, Dec 02, 2022 at 07:09:32PM +0100, Uwe Kleine-König wrote:
>> On Mon, Nov 28, 2022 at 12:20:27PM +0100, AngeloGioacchino Del Regno wrote:
>>> Specify #pwm-cells on pwm@...06000 to make it actually usable.
>>>
>>> Fixes: ae457b7679c4 ("arm64: dts: mt7622: add SoC and peripheral related device nodes")
>>> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
>>> ---
>>>   arch/arm64/boot/dts/mediatek/mt7622.dtsi | 1 +
>>>   1 file changed, 1 insertion(+)
>>>
>>> diff --git a/arch/arm64/boot/dts/mediatek/mt7622.dtsi b/arch/arm64/boot/dts/mediatek/mt7622.dtsi
>>> index 146e18b5b1f4..f321c6d0fd7c 100644
>>> --- a/arch/arm64/boot/dts/mediatek/mt7622.dtsi
>>> +++ b/arch/arm64/boot/dts/mediatek/mt7622.dtsi
>>> @@ -435,6 +435,7 @@ uart3: serial@...05000 {
>>>   	pwm: pwm@...06000 {
>>>   		compatible = "mediatek,mt7622-pwm";
>>>   		reg = <0 0x11006000 0 0x1000>;
>>> +		#pwm-cells = <2>;
>>
>> 3 should be possible, too. The driver does only support one
>> polarity, so it's not really needed, but would be nice for consistency?
>>
>> Thierry, what's your take here?
>>
>> Other than that: Who would pick this up, I assume it to go via an ARM
>> tree together with the 2nd patch in this series?

The DT patch should go through my tree once all questions are answered and the 
dt-binding patch got accpeted by PWM maintainer.

Regards,
Matthias

> 
> The questions here are still open and both patches unapplied. :-\
> 
> Best regards
> Uwe
>