Re: [PATCH v3 04/14] arm64: dts: qcom: sc7280: Clean up sdc1 / sdc2 pinctrl

[Matthias Kaehlcke <mka@chromium.org>]

On Wed, Feb 02, 2022 at 01:23:38PM -0800, Douglas Anderson wrote:
> This patch makes a few improvements to the way that sdc1 / sdc2
> pinctrl is specified on sc7280:
> 
> 1. There's no reason to "group" the sdc pins into one overarching node
> and there's a downside: we have to replicate the hierarchy in the
> board device tree files. Let's clean this up.
> 
> 2. There's really not a lot of reason not to list the "pinctrl" for
> sdc1 (eMMC) in the SoC dtsi file. These aren't GPIO pins and
> everyone's going to specify the same pins.
> 
> 3. Even though it's likely that boards will need to override pinctrl
> for sdc2 (SD card) to add the card detect GPIO, we can be symmetric
> and add it to the SoC dsti file.
> 
> 4. Let's get rid of the word "on" from the normal config and add a
> "sleep" suffix to the sleep config. This looks cleaner to me.
> 
> This is intended to be a no-op change but it could plausibly change
> behavior depending on how the pinctrl code parses things. One thing to
> note is that "SD card detect" is explicitly listed now as keeping its
> pull enabled in sleep since we still want to detect card insertions
> even if the controller is suspended (because no card is inserted). The
> pinctrl framework likely did this anyway, but it's nice to see it
> explicit.

Reviewed-by: Matthias Kaehlcke <mka@chromium.org>