Re: [PATCH v9 0/7] mmc: host: renesas_sdhi_core: support configuring an optional sdio mux

From: Josua Mayer <josua@solid-run.com>
To: Ulf Hansson <ulf.hansson@linaro.org>
Cc: Marc Kleine-Budde <mkl@pengutronix.de>,
	Vincent Mailhol <mailhol@kernel.org>,
	Vinod Koul <vkoul@kernel.org>,
	Neil Armstrong <neil.armstrong@linaro.org>,
	Peter Rosin <peda@axentia.se>,
	Aaro Koskinen <aaro.koskinen@iki.fi>,
	Andreas Kemnade <andreas@kemnade.info>,
	Kevin Hilman <khilman@baylibre.com>,
	Roger Quadros <rogerq@kernel.org>,
	Tony Lindgren <tony@atomide.com>,
	Janusz Krzysztofik <jmkrzyszt@gmail.com>,
	Vignesh R <vigneshr@ti.com>, Andi Shyti <andi.shyti@kernel.org>,
	Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>,
	Geert Uytterhoeven <geert+renesas@glider.be>,
	Magnus Damm <magnus.damm@gmail.com>,
	Wolfram Sang <wsa+renesas@sang-engineering.com>,
	Yazan Shhady <yazan.shhady@solid-run.com>,
	Jon Nettleton <jon@solid-run.com>,
	Mikhail Anikin <mikhail.anikin@solid-run.com>,
	"linux-can@vger.kernel.org" <linux-can@vger.kernel.org>,
	"linux-phy@lists.infradead.org" <linux-phy@lists.infradead.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-omap@vger.kernel.org" <linux-omap@vger.kernel.org>,
	"linux-i2c@vger.kernel.org" <linux-i2c@vger.kernel.org>,
	"linux-mmc@vger.kernel.org" <linux-mmc@vger.kernel.org>,
	"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
	"linux-renesas-soc@vger.kernel.org"
	<linux-renesas-soc@vger.kernel.org>
Subject: Re: [PATCH v9 0/7] mmc: host: renesas_sdhi_core: support configuring an optional sdio mux
Date: Mon, 9 Feb 2026 10:21:28 +0000	[thread overview]
Message-ID: <f643cbbb-9e23-4e88-a2a9-01077d466c12@solid-run.com> (raw)
In-Reply-To: <CAPDyKFpbpcg3ei51hEcG5FzJL7tK44PdBcMbxfOdON7ozxP2Xg@mail.gmail.com>

On 09/02/2026 11:57, Ulf Hansson wrote:
> On Sun, 8 Feb 2026 at 16:39, Josua Mayer <josua@solid-run.com> wrote:
>> Some Renesas SoC based boards mux SD and eMMC on a single sdio
>> controller, exposing user control by dip switch and software control by
>> gpio.
>>
>> Purpose is to simplify development and provisioning by selecting boot
>> media at power-on, and again before starting linux.
>>
>> Add binding and driver support for linking a (gpio) mux to renesas sdio
>> controller.
>>
>> Introduce generic helper functions for getting managed and selected
>> mux-state objects, and switch i2c-omap and phy-can-transceiver drivers.
>>
>> Signed-off-by: Josua Mayer <josua@solid-run.com>
>> ---
>> Changes in v9:
>> - compile-tested on x86 with MULTIPLEXER=m/y/unset.
>> - fixed Kconfig changes so that CONFIG_MULTIPLEXER can be selected.
>>    through menuconfig / .config as intended.
>> - updated trailers
>> - document null return value for mux_control_get_optional.
>> - fix build error for CONFIG_MULTIPLEXER=m, found with x86_64
>>    allmodconfig: replaced ifdef ... with if IS_ENABLED(...).
>>    (Reported-by: Mark Brown <broonie@kernel.org>)
>> - Link to v8: https://lore.kernel.org/r/20260203-rz-sdio-mux-v8-0-024ea405863e@solid-run.com
> [...]
>
> I have already applied for v8 and it's going to be in my pull-request
> for v7.0 in a few hours.
>
> Please send incremental fixes on top instead of a new version of the
> series, then I can pick them as fixes for v7.0.

Okay, I'll send a minimal patch to fix the build error only in that case.

Thanks!