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

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>