mb/google/drallion: Implement touchscreen power sequencing

For touchscreens on drallion, drive the enable GPIO high starting in
romstage while holding in reset, then disable the reset GPIO in
ramstage. 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: I6825345f35a7415020e77edf781139f0c9b5f875
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71191
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

0 files changed, 0 insertions, 0 deletions