linux-kernel - Re: [PATCH 1/2] dt-bindings: pinctrl: Add DT bindings for apple,pinctrl

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Message-ID: <d332f69c-33a1-b1c9-e1c9-3c8d756594ef@canonical.com>
Date:   Mon, 10 May 2021 09:09:00 -0400
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
To:     Tomasz Figa <tomasz.figa@...il.com>,
        Linus Walleij <linus.walleij@...aro.org>
Cc:     Mark Kettenis <mark.kettenis@...all.nl>, kettenis@...nbsd.org,
        Marc Zyngier <maz@...nel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>, Hector Martin <marcan@...can.st>,
        Rob Herring <robh+dt@...nel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        sven@...npeter.dev
Subject: Re: [PATCH 1/2] dt-bindings: pinctrl: Add DT bindings for
 apple,pinctrl

On 09/05/2021 05:50, Tomasz Figa wrote:
>>>> So is this an entirely Apple thing now, and not based on some Samsung
>>>> block from S3C like what we have seen before?
>>>
>>> As far as I can tell, yes.  This Apple controller has a single
>>> register per pin that controls the muxing and gpio functions, whereas
>>> the S3C controller seems to have 4 registers per pin.
>>
>> Fair enough.
>>
> 
> Right, doesn't sound like any Samsung pin controller I'm familiar
> with, although I haven't followed new hardware developments since I
> left Samsung a few years ago. I've stayed as a maintainer mostly to
> help with the legacy SoCs I had worked with, e.g. s3c6410. :)

I can confirm that it looks different than Samsung designs.


Best regards,
Krzysztof