[PATCH v11 0/9] mmc: host: renesas_sdhi_core: support configuring an optional sdio mux

[Ulf Hansson]

On Thu, 5 Mar 2026 at 17:19, Ulf Hansson <ulf.hansson at linaro.org> wrote:
>
> On Thu, 26 Feb 2026 at 14:21, Josua Mayer <josua at solid-run.com> wrote:
> >
> > This series has evolved over time from adding generic mux support for
> > renesas sdhi driver, to partial rewrite of the mux framework.
> >
> > Several drivers have started implementing driver-local managed and
> > unmanaged helper functions for getting and selecting a mux-state object.
> >
> > mmc maintainers have requested that new code shall intreoduce and use
> > generic helper functions that can be shared by all drivers, avoiding
> > code duplication.
> >
> > This series is structured in 5 parts, each of which is self-sufficient
> > depending only on the previous patches. This shall allow the first N
> > patches to be applied even if the last ones need further discussion.
> >
> > 1. Rename driver-local helper functions to avoid name collision with
> >    global version to be introduced later.
> >
> > 2. Implement generic device-managed helper functions in mux core.
> >
> > 3. Convert driver local code from similar patterns to use the newly
> >    added global helpers.
> >
> > 4. Change mux-core Kconfig so that it can be enabled through menuconfig,
> >    without an explicit "select" dependency from other drivers.
> >
> > 5. add dt bindings and driver support for mux in renesas sdhi driver.
> >
> > Signed-off-by: Josua Mayer <josua at solid-run.com>
> > ---
> > Changes in v11:
> > - changed approach to Kconfig making MULTIPLEXER a bool, and adding a
> >   user-visible wrapper for menuconfig.
> >   (Reported-by: Ulf Hansson <ulf.hansson at linaro.org>)
> > - dropped the "default m if COMPILE_TEST".
> >   (Reported-by: Geert Uytterhoeven <geert at linux-m68k.org>)
> > - improved kerneldoc line wrapping.
> > - removed unnecessary changes to original devm_mux_control-get.
> > - fix "reference preceded by free" in mux_state_get function
> > - Link to v10: https://lore.kernel.org/r/20260225-rz-sdio-mux-v10-0-1ee44f2ea112@solid-run.com
> >
>
> [...]
>
> To me, this looks ready for a new try. Unless I hear some objections,
> I intend to apply this as material for v7.1 via my mmc tree on Monday.
>
> The complete series will be available on an immutable branch, for
> other subsystem maintainers to pull in if that turns out to be needed.
> I let you know of more details on Monday.

I have now queued up this series for v7.1 via my next branch.

The series is also available at the immutable "mux" branch (based on
v7.0-rc1) via my mmc tree, which other subsystem maintainers can pull
in if needed.

Kind regards
Uffe