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

[Ulf Hansson]

On Sun, 8 Feb 2026 at 16:39, Josua Mayer <josua@xxxxxxxxxxxxx> 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@xxxxxxxxxxxxx>
> ---
> 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@xxxxxxxxxx>)
> - Link to v8: https://lore.kernel.org/r/20260203-rz-sdio-mux-v8-0-024ea405863e@xxxxxxxxxxxxx

[...]

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.

Kind regards
Uffe