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 C4D1A1391; Sun, 30 Nov 2025 08:22:45 +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=1764490965; cv=none; b=HiA+1GdqTshOvY0ikQU+01oYdbOiQnob+JTaFrfk182p/HF1gRfKAX11PUTR6VEM0AJhr9MLKelL59pBkkZrg9694EJ9QRzfastezvU1u50rR0R6ACv7MLg1+urJfdiGGqH0OqvID7JEjzSewSIlj5gHas07bfncQgPyqVtflZM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764490965; c=relaxed/simple; bh=bUUaXl2BJ4t+2CfI/IqewjPp7TRtclQJMBF9Fk3c3hQ=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=NZoKeHCR7L8bQyrVa+av+VrC7W9kaDeYQm2/aQbQ/hQARr9/oYFhNUmcTD0/C3EtH4nly1FYXxzPX+A+VycpJWnp/uKqngjwyD+jFAyFEEXIjDAnfMEnu0CW07xzEM0TEQ3rF3HvIE7wGQMBGgct6M01/Pjs6RzXNQ/cwRHeJSk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=HIELzPTa; 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="HIELzPTa" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C8712C4CEF8; Sun, 30 Nov 2025 08:22:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1764490965; bh=bUUaXl2BJ4t+2CfI/IqewjPp7TRtclQJMBF9Fk3c3hQ=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=HIELzPTaySdP0h91vuZ1eqAPsnckadwsikeSxfvLv09fbL5lLG2pHgRzLw2yOV0hT blr9YFcLgmOS8rbKlw9DlclJVokIKJGjvHow8CpO0Kq8t0bqvHRwbQpqqMI/juDY2P XqnDdQsbM95kJ60p6A+c0Et0LPLnp2e1hQ4qf//M8/+liUCw2NpsXGsTXap1hQtpQ+ H4JgtwHzg8aAEDxAAvAKi5mP6TdxjIYbVthm+//T+AKRgGGSRpi5OpK6Ld6nrQVCrn F9oxgVEIUR3wV6V1YF2CTF/+JW6PZmdINfPaOsr0ENOVtxT2A/ZKPl1not03luGDoi lIYMvTIjThKVA== Message-ID: <2080db04-9845-4193-8dd9-7bb84894815b@kernel.org> Date: Sun, 30 Nov 2025 09:22:39 +0100 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: [PATCH 1/2] dt-bindings: mmc: renesas,sdhi: Add mux-states property To: Josua Mayer , Ulf Hansson , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Geert Uytterhoeven , Magnus Damm , Wolfram Sang Cc: Mikhail Anikin , Yazan Shhady , Jon Nettleton , linux-mmc@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-renesas-soc@vger.kernel.org References: <20251128-rz-sdio-mux-v1-0-1ede318d160f@solid-run.com> <20251128-rz-sdio-mux-v1-1-1ede318d160f@solid-run.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 28/11/2025 17:15, Josua Mayer wrote: > Add mux controller support for when sdio lines are muxed between a host > and multiple cards. > > There are several devices supporting a choice of eMMC or SD on a single > board by both dip switch and gpio, e.g. Renesas RZ/G2L SMARC SoM and > SolidRun RZ/G2L SoM. > > In-tree dts for the Renesas boards currently rely on preprocessor macros > to hog gpios and define the card. > > By adding mux-states property to sdio controller description, boards can > correctly describe the mux that already exists in hardware - and drivers > can coordinate between mux selection and probing for cards. > > Signed-off-by: Josua Mayer > --- > Documentation/devicetree/bindings/mmc/renesas,sdhi.yaml | 14 ++++++++++++++ > 1 file changed, 14 insertions(+) > > diff --git a/Documentation/devicetree/bindings/mmc/renesas,sdhi.yaml b/Documentation/devicetree/bindings/mmc/renesas,sdhi.yaml > index c754ea71f51f7..55635c60ad73a 100644 > --- a/Documentation/devicetree/bindings/mmc/renesas,sdhi.yaml > +++ b/Documentation/devicetree/bindings/mmc/renesas,sdhi.yaml > @@ -106,6 +106,11 @@ properties: > iommus: > maxItems: 1 > > + mux-states: > + description: > + mux controller node to route the SDIO signals from SoC to cards. > + maxItems: 1 > + > power-domains: > maxItems: 1 > > @@ -262,9 +267,17 @@ unevaluatedProperties: false > examples: > - | > #include > + #include > #include > + #include > #include > > + mux: mux-controller { > + compatible = "gpio-mux"; > + #mux-state-cells = <1>; > + mux-gpios = <&pinctrl RZG2L_GPIO(22, 1) GPIO_ACTIVE_LOW>; Wrong indentation and not really relevant here, so just drop. Best regards, Krzysztof