diff options
| author | Ivy Jian <ivy.jian@quanta.corp-partner.google.com> | 2023-02-02 10:29:45 +0800 |
|---|---|---|
| committer | Eric Lai <eric_lai@quanta.corp-partner.google.com> | 2023-02-03 03:16:30 +0000 |
| commit | c8e0f1631f033b84da906c16ed576cb98d032403 (patch) | |
| tree | 591e109bb65c871faea92657cb85359e0a8b6f0b /src/mainboard/google/rex/variants/rex0/gpio.c | |
| parent | eed31cbc93df2c02d455b91fafcb894a2d467437 (diff) | |
mb/google/rex: update touchscreen report EN pin setting
Removed workaround since the latest schematics fixed.
Power Sequencing of ELAN6918 (in ACPI) after this patch
`POWER enabled -> RESET deasserted -> Report EN enabled`
BUG=b:247029304
TEST=Verified ELAN touch panel is working as expected after booting
Google/rex device to ChromeOS.
Signed-off-by: Ivy Jian <ivy.jian@quanta.corp-partner.google.com>
Change-Id: I19629262776f7e0cccbdebb2285890d177a8a8a6
Reviewed-on: https://review.coreboot.org/c/coreboot/+/72725
Reviewed-by: Subrata Banik <subratabanik@google.com>
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Diffstat (limited to 'src/mainboard/google/rex/variants/rex0/gpio.c')
| -rw-r--r-- | src/mainboard/google/rex/variants/rex0/gpio.c | 15 |
1 files changed, 1 insertions, 14 deletions
diff --git a/src/mainboard/google/rex/variants/rex0/gpio.c b/src/mainboard/google/rex/variants/rex0/gpio.c index 01fa95d6c6..23732f2397 100644 --- a/src/mainboard/google/rex/variants/rex0/gpio.c +++ b/src/mainboard/google/rex/variants/rex0/gpio.c @@ -107,20 +107,7 @@ static const struct pad_config gpio_table[] = { /* GPP_C05 : [] ==> WWAN_PERST_L_STRAP */ PAD_CFG_GPO(GPP_C05, 1, PLTRST), /* GPP_C06 : [] ==> SOC_TCHSCR_RPT_EN */ - /* - * FIXME: Remove this code after resolving b/247029304. - * - * ELAN6918 Power Sequencing seems not perfectly matching - * with the previous platforms and setting GPP_C06 to high prior - * to the power sequencing is actually makes it work. - * - * Ideally Power Sequencing should be as below for ELAN6918 (in ACPI) - * `POWER enabled -> RESET deasserted -> Report EN enabled` - * - * But below sequence is only working currently: - * `Report EN enabled (ramstage) -> POWER enabled (ACPI) -> RESET deasserted (ACPI)` - */ - PAD_CFG_GPO(GPP_C06, 1, DEEP), + PAD_CFG_GPO(GPP_C06, 0, DEEP), /* GPP_C07 : [] ==> SOC_TCHSCR_INT */ PAD_CFG_GPI_APIC(GPP_C07, NONE, PLTRST, LEVEL, NONE), /* GPP_C08 : [] ==> SOCHOT_ODL */ |