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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 /src/mainboard/google/brya/variants/glassway | |
| 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 'src/mainboard/google/brya/variants/glassway')
| -rw-r--r-- | src/mainboard/google/brya/variants/glassway/gpio.c | 2 | ||||
| -rw-r--r-- | src/mainboard/google/brya/variants/glassway/overridetree.cb | 8 |
2 files changed, 6 insertions, 4 deletions
diff --git a/src/mainboard/google/brya/variants/glassway/gpio.c b/src/mainboard/google/brya/variants/glassway/gpio.c index d3510a17c5..79697d533b 100644 --- a/src/mainboard/google/brya/variants/glassway/gpio.c +++ b/src/mainboard/google/brya/variants/glassway/gpio.c @@ -100,6 +100,8 @@ static const struct pad_config romstage_gpio_table[] = { PAD_CFG_GPO(GPP_C0, 1, DEEP), /* C1 : SMBDATA ==> USI_RST_L */ PAD_CFG_GPO(GPP_C1, 0, DEEP), + /* C6 : SML1CLK ==> TCHSCR_REPORT_EN */ + PAD_CFG_GPO(GPP_C6, 0, DEEP), /* H12 : UART0_RTS# ==> SD_PERST_L */ PAD_CFG_GPO(GPP_H12, 1, DEEP), }; diff --git a/src/mainboard/google/brya/variants/glassway/overridetree.cb b/src/mainboard/google/brya/variants/glassway/overridetree.cb index 15b7d7ec4d..8c779d75f2 100644 --- a/src/mainboard/google/brya/variants/glassway/overridetree.cb +++ b/src/mainboard/google/brya/variants/glassway/overridetree.cb @@ -323,13 +323,13 @@ chip soc/intel/alderlake register "desc" = ""ELAN Touchscreen"" register "irq" = "ACPI_IRQ_LEVEL_LOW(GPP_C7_IRQ)" register "reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_C1)" - register "reset_delay_ms" = "25" + register "reset_delay_ms" = "20" register "reset_off_delay_ms" = "4" register "stop_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_C6)" - register "stop_delay_ms" = "25" - register "stop_off_delay_ms" = "2" + register "stop_delay_ms" = "5" + register "stop_off_delay_ms" = "25" register "enable_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPP_C0)" - register "enable_delay_ms" = "7" + register "enable_delay_ms" = "25" register "has_power_resource" = "1" device i2c 10 on probe TOUCHSCREEN_SOURCE TOUCHSCREEN_UNPROVISIONED |