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authorMatt DeVillier <matt.devillier@amd.corp-partner.google.com>2022-11-14 09:38:21 -0600
committerEric Lai <eric_lai@quanta.corp-partner.google.com>2022-11-16 03:02:48 +0000
commit150b809edf83d938b9dbb1bb94823b32393dd3fd (patch)
treed3c53ae73acea97d566f40b608ab89a545528315 /Documentation/soc/cavium
parent3c148f7e61566f40988259cb26567530d1c24770 (diff)
mb/google/kahlee: Implement touchscreen power sequencing
As all variants have a touchscreen option, in baseboard table set the enable GPIO high and hold in reset during romstage, then release reset in ramstage. This will allow the touchscreen to make use of the runtime I2C detect feature (enabled in a subsequent commit) so that an ACPI device entry is created only for the touchscreen actually present. This mirrors similar changes made for skyrim, guybrush, and zork. TEST=tested with rest of patch train Change-Id: Id235815904dfc093549a1ed529e19974010977c7 Signed-off-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/69547 Reviewed-by: Martin L Roth <gaumless@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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