linux-kernel - Re: [PATCH 1/4] dt-bindings: pwm: Add Apple PWM controller

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Message-ID: <CAMT+MTQAe_eKoiNvmL4fje0__V16VDFWDGzehkN6M-jRuuMn7A@mail.gmail.com>
Date:   Fri, 28 Oct 2022 21:44:57 +0300
From:   Sasha Finkelstein <fnkl.kernel@...il.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     thierry.reding@...il.com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, marcan@...can.st,
        sven@...npeter.dev, alyssa@...enzweig.io, asahi@...ts.linux.dev,
        linux-arm-kernel@...ts.infradead.org, linux-pwm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/4] dt-bindings: pwm: Add Apple PWM controller

On Fri, 28 Oct 2022 at 20:53, Krzysztof Kozlowski
<krzysztof.kozlowski@...aro.org> wrote:
>
> On 28/10/2022 12:52, Sasha Finkelstein wrote:
> > +  PWM controller used for keyboard backlight on ARM Macs
> > +
> > +properties:
> > +  compatible:
> > +    items:
> > +      - enum:
> > +          - apple,t8103-fpwm
> > +          - apple,t6000-fpwm
> > +          - apple,t8112-fpwm
> > +      - const: apple,s5l-fpwm
>
> Is it then derived from Samsung platform? If yes, it is candidate for
> merging.
Apple calls it the 'AppleS5L8920XFPWM' which suggests some samsung
lineage, but the register interface is different from the one in
pwm-samsung driver.