From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CC1D5DDC5; Fri, 10 Oct 2025 01:12:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760058771; cv=none; b=JGc92AJnP8vSM94ixcJj9dBiD2D9PNC0qUJou5ouW6jN+dXD3lCqNbBR2CG8zeq310Cq/8nnPYTJa0xr7JBHtiPYe+f1+O1sHPWQ7nDQ1d93/ftfY2IVmwZceoMgq9ioV1qvnmTf7V0ToXgbBTVNnsMzXOtTKobPYs5nFV7N4IA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760058771; c=relaxed/simple; bh=9RFb0ITLXdY5UcNja///NRHXOHieonf4kWFfDq+78Yg=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=GzJHiIFgtYep7CBbU3Oz9gFOEBN4nsIoio9m5Inig2iv/4a3LXgdaYukI5KEMaxY88eC2G7iFsbksan5bomkRnZjEx5+NhbRHz+8U3O29OKxY5ycjXCS1GIadL7iruKpLsZHBhCW2QYb8Y3pTAvNPyuypOj9WHTLFhv5sgCP/BI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=SGsbsvB4; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="SGsbsvB4" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 76FE3C4CEE7; Fri, 10 Oct 2025 01:12:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1760058771; bh=9RFb0ITLXdY5UcNja///NRHXOHieonf4kWFfDq+78Yg=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=SGsbsvB44u8HFEhvE3uue6zJpFCve0eRmFwITbHhWfyXenj9OmrlVmjMuMPcjBp3O Jo5Pv9R+dJtVgzogHZrg/PcfSuQUNdjC//oYRBT/9YmyElhvC6hEoPits7KB4R4keT fAm0RlS0FNRYpeMsD63K+lt6vSgCUYt3VNb4S1hdVI8n78tDGSzovM2C3DZuLjpSDW xrwlSYYyRLQP/r46gYVJMMD/rZ+nGpRbypiJTD6IWZSUQOyJd2v7QTWBc8aRD8M7/B hdaHAZWuGkHpXz/YyAH0XQkoXVkpS/vXvi2B3dt9cFTNmGFNUWaMdTtbDMNtRLoLM8 tOT36dIUNh7lw== Message-ID: <3118e300-f6de-42af-bd1b-ad13dc80537d@kernel.org> Date: Fri, 10 Oct 2025 03:12:44 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RFC PATCH v1 1/2] dt-bindings: gpio: add gpio-split controller To: Jonas Jelonek , Linus Walleij , Bartosz Golaszewski , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-gpio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20251009223501.570949-1-jelonek.jonas@gmail.com> <20251009223501.570949-2-jelonek.jonas@gmail.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 10/10/2025 07:35, Jonas Jelonek wrote: > diff --git a/Documentation/devicetree/bindings/gpio/gpio-split.yaml b/Documentation/devicetree/bindings/gpio/gpio-split.yaml > new file mode 100644 > index 000000000000..9a58c81da4fa > --- /dev/null > +++ b/Documentation/devicetree/bindings/gpio/gpio-split.yaml > @@ -0,0 +1,77 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/gpio/gpio-split.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: GPIO split > + > +maintainers: > + - Jonas Jelonek > + > +description: > + A virtual GPIO controller to provide virtual GPIOs backed by a single real > + GPIO and a multiplexer. This controller may be used in case a real GPIO is > + connected to multiple inputs/outputs and controlled by a multiplexer, and > + another subsystem/driver is not able to work with multiplexer subsystem. Instead, please fix the subsystem driver? I have also doubts we actually want it in DT, because we tie the limitation of Linux drivers to bindings. Best regards, Krzysztof