diff options
| author | Furquan Shaikh <furquan@google.com> | 2020-08-05 14:54:39 -0700 |
|---|---|---|
| committer | Furquan Shaikh <furquan@google.com> | 2020-08-06 19:09:12 +0000 |
| commit | 5474f8e3cf54dc9d9eb699de1ff0e3fdbe66dfe6 (patch) | |
| tree | 8d7d3a6dc27e2b4a28f886847399ec8c72abb67b /src/mainboard/google/zork/variants/berknip | |
| parent | cc6c41f8d8b6880a7ad4947599350758cd18f85f (diff) | |
mb/google/zork: Add touchscreen power control
This change adds support for touchscreen power control using:
* GPIO_90 for trembyle based boards
* GPIO_32 for dalboz based boards
By default, baseboard tables configure these GPIOs as PAD_GPO driven
low and override trees expose these pads as enable_gpio to be used by
ACPI power resource.
In order to support pre-v3.6 boards, override tables configure these
pads as PAD_NC and drop the enable_gpio setting from device tree based
on board version.
BUG=b:161935640, b:162747210
Change-Id: Iba5e36b65b44ea11613b4d5fc8f13ce6433f83ab
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44193
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/mainboard/google/zork/variants/berknip')
| -rw-r--r-- | src/mainboard/google/zork/variants/berknip/gpio.c | 2 | ||||
| -rw-r--r-- | src/mainboard/google/zork/variants/berknip/overridetree.cb | 6 |
2 files changed, 8 insertions, 0 deletions
diff --git a/src/mainboard/google/zork/variants/berknip/gpio.c b/src/mainboard/google/zork/variants/berknip/gpio.c index 2a43b5a190..e92bc1742a 100644 --- a/src/mainboard/google/zork/variants/berknip/gpio.c +++ b/src/mainboard/google/zork/variants/berknip/gpio.c @@ -27,6 +27,8 @@ static const struct soc_amd_gpio berknip_bid1_gpio_set_stage_ram[] = { }; static const struct soc_amd_gpio berknip_bid2_gpio_set_stage_ram[] = { + /* TP */ + PAD_NC(GPIO_90), /* USI_RESET */ PAD_GPO(GPIO_140, HIGH), }; diff --git a/src/mainboard/google/zork/variants/berknip/overridetree.cb b/src/mainboard/google/zork/variants/berknip/overridetree.cb index 45b80a2a5c..58f5844ef3 100644 --- a/src/mainboard/google/zork/variants/berknip/overridetree.cb +++ b/src/mainboard/google/zork/variants/berknip/overridetree.cb @@ -71,6 +71,8 @@ chip soc/amd/picasso register "desc" = ""Raydium Touchscreen"" register "probed" = "1" register "irq_gpio" = "ACPI_GPIO_IRQ_EDGE_LOW(GPIO_12)" + register "enable_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_90)" + register "enable_delay_ms" = "1" register "reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_140)" # 32ms: Rise time of the reset line # 20ms: Firmware ready time @@ -84,6 +86,8 @@ chip soc/amd/picasso register "desc" = ""ELAN Touchscreen"" register "probed" = "1" register "irq_gpio" = "ACPI_GPIO_IRQ_EDGE_LOW(GPIO_12)" + register "enable_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_90)" + register "enable_delay_ms" = "1" register "reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_140)" register "reset_delay_ms" = "20" register "has_power_resource" = "1" @@ -94,6 +98,8 @@ chip soc/amd/picasso register "generic.desc" = ""G2TOUCH Touchscreen"" register "generic.irq_gpio" = "ACPI_GPIO_IRQ_EDGE_LOW(GPIO_12)" register "generic.probed" = "1" + register "generic.enable_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_90)" + register "generic.enable_delay_ms" = "1" register "generic.reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_140)" register "generic.reset_delay_ms" = "50" register "generic.has_power_resource" = "1" |