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References: <20240228-mbly-gpio-v2-0-3ba757474006@bootlin.com>
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From: Linus Walleij <linus.walleij@linaro.org>
Date: Thu, 29 Feb 2024 10:44:33 +0100
Message-ID: <CACRpkdbK2Sa_4qp3VE0ivHP8W6F-QDkuxV-XnZYviAkO5ZBMsg@mail.gmail.com>
Subject: Re: [PATCH v2 00/30] Rework Nomadik GPIO to add Mobileye EyeQ5 support
To: =?UTF-8?B?VGjDqW8gTGVicnVu?= <theo.lebrun@bootlin.com>
Cc: Bartosz Golaszewski <brgl@bgdev.pl>, Rob Herring <robh+dt@kernel.org>, 
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>, Conor Dooley <conor+dt@kernel.org>, 
	Philipp Zabel <p.zabel@pengutronix.de>, Thomas Bogendoerfer <tsbogend@alpha.franken.de>, 
	linux-gpio@vger.kernel.org, devicetree@vger.kernel.org, 
	linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, 
	linux-mips@vger.kernel.org, Gregory CLEMENT <gregory.clement@bootlin.com>, 
	Vladimir Kondratiev <vladimir.kondratiev@mobileye.com>, 
	Thomas Petazzoni <thomas.petazzoni@bootlin.com>, Tawfik Bayouk <tawfik.bayouk@mobileye.com>, 
	Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>, Stephen Warren <swarren@wwwdotorg.org>, 
	Jonathan Corbet <corbet@lwn.net>, linux-doc@vger.kernel.org
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On Wed, Feb 28, 2024 at 12:28=E2=80=AFPM Th=C3=A9o Lebrun <theo.lebrun@boot=
lin.com> wrote:

> This patch series reworks the Nomadik GPIO driver to bring it up to date
> to current kernel standards. We then add Mobileye EyeQ5 support that
> uses the same IP block but with limited functionality. We also add
> features required by our newly supported platform:
>
>  - Dynamic GPIO ID allocation;
>  - Make clock optional;
>  - Shared IRQ (usecase: EyeQ5 has two banks using the same IRQ);
>  - Handle variadic GPIO counts (usecase: EyeQ5 has <32 GPIOs per bank);
>  - Grab optional reset at probe (usecase: EyeQ5 has a shared GPIO reset).
>
> This GPIO platform driver was previously declared & registered inside
> drivers/pinctrl/nomadik/pinctrl-nomadik.c, side-by-side with the
> pinctrl driver. Both are tightly integrated, mostly for muxing reasons.
> Now that gpio-nomadik is used for another platform, we loosen the
> relationship. The behavior should not change on already supported
> hardware but I do not have Nomadik hardware to test for that.

I have queued the relevant patches to an immutable branch in the
pinctrl tree for testing and I can also pick up some ACKs if they arrive.

When I'm confident in the branch, I will send an optional pull request
to Bartosz for it!

Yours,
Linus Walleij