Re: [PATCH 2/2] mmc: sdhci-acpi: AMDI0040: Allow changing HS200/HS400 driver strength

[Ulf Hansson]

On Mon, 5 Oct 2020 at 14:50, Ulf Hansson <ulf.hansson@xxxxxxxxxx> wrote:
>
> On Mon, 28 Sep 2020 at 23:59, Raul E Rangel <rrangel@xxxxxxxxxxxx> wrote:
> >
> > This change will allow platform designers better control over signal
> > integrity by allowing them to tune the HS200 and HS400 driver strengths.
> >
> > The driver strength was previously hard coded to A to solve boot
> > problems with certain platforms. This driver strength does not
> > universally apply to all platforms so we need a knob to adjust it.
> >
> > All older platforms currently have the SDR104 preset hard coded to A in
> > the firmware. This means that switching from the hard coded value in
> > the kernel to reading the SDR104 preset is a no-op for these platforms.
> > Newer platforms will have properly set presets. So this change will
> > support both new and old platforms.
> >
> > Signed-off-by: Raul E Rangel <rrangel@xxxxxxxxxxxx>
>
> Applied for next, thanks!

Turned out that this doesn't build, hence I am dropping it from my
next branch. Please submit a new version.

[...]

Kind regards
Uffe