tree 20075ba58d10eb891056e167b6854c4c891fc142
parent e8f9d18e8860575724e6b2ab134b4d1eba8a61f7
author Qinghong Zeng <zengqinghong@huaqin.corp-partner.google.com> 1710573197 +0800
committer Felix Held <felix-coreboot@felixheld.de> 1711114691 +0000

mb/google/nissa/var/anraggar: Update touchscreen enable pin to GPP_C0

Assign GPP_C0 and enable only the touchscreen. Before modification,
GPP_C0 supplies power to the touchscreen and sensor at the same time.
Now the hardware circuit has been modified, GPP_C0 supplies power to the
touchscreen alone. After the software is synchronously modified, when
the device enters suspend(S0ix), GPP_C0 will not enable VDD, which can
reduce the standby power consumption of the touchscreen when it is
suspended(S0ix), which is about 2.1mW.

BUG=b:304920262
TEST= touchscreen function workable

Change-Id: Ia06209aa8303be4fc0669c5d6e5d7a06e8e9ab99
Signed-off-by: Qinghong Zeng <zengqinghong@huaqin.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81265
Reviewed-by: Eric Lai <ericllai@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Weimin Wu <wuweimin@huaqin.corp-partner.google.com>