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| author | Frank Chu <frank_chu@pegatron.corp-partner.google.com> | 2024-03-08 17:58:39 +0800 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2024-03-19 13:35:11 +0000 |
| commit | b5a7bad724331195a397bb150804dbd2aa39ff2c (patch) | |
| tree | 3247b659a2413d0ef68baadb192b9f2f31fcfc5d /Documentation/endverbatim.tex | |
| parent | 194128a3af2c954cbdb496b6bada99208029bb73 (diff) | |
mb/google/nissa/var/glassway: Adjust touchscreen power sequencing
Adjust touchscreen power sequencing for eKTH5015M.
The INX touch panel (eKTH5015M) contains a pull-up register which causes TCHSCR_REPORT_EN pull-up abnormally from Z1 power on.Because the t25 must be at least greater than 20ms, TCHSCR_REPORT_EN is initialized to GPO_L in the early stage (romstage) to meet the spec.
BUG=b:328170008
BRANCH=firmware-nissa-15217.B
TEST=Build and check I2C devices timing meet spec.
[INFO ] input: Elan Touchscreen as /devices/pci0000:00/0000:00:15.1/i2c_designware.1/i2c-10/i2c-ELAN0001:00/input/in4
Change-Id: I50f9c21ddee2bc9c1d313f63049cb587b4ae047a
Signed-off-by: Frank Chu <frank_chu@pegatron.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81135
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-by: Eric Lai <ericllai@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'Documentation/endverbatim.tex')
0 files changed, 0 insertions, 0 deletions