tree e0745c6a2dd445c48c0b730e3508d655cc3fcf18
parent 204ffcb98d5594983aed047ec2430e0b6aa515a0
author Matt DeVillier <matt.devillier@gmail.com> 1682607351 -0500
committer Felix Held <felix-coreboot@felixheld.de> 1691588415 +0000

mb/google/brya: Implement touchscreen power sequencing

For brya variants with a touchscreen, drive the enable GPIO high
starting in romstage while holding in reset, then disable the reset
GPIO in ramstage (done in the baseboard). This will allow coreboot
to detect the presence of i2c touchscreens during ACPI SSDT generation
(implemented in a subsequent commit).

BUG=b:121309055
TEST=tested with rest of patch train

Change-Id: I8e56ac4834ce69de18bef2d34f5c361a7fda1aab
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74928
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin L Roth <gaumless@gmail.com>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>