mb/google/rex/var/screebo: Enable touchscreen
Enable ILI2901 and eKTH7B18 touchscreen for Google Screebo.
BUG=b:278167967
BRANCH=none
TEST=Build and boot to Google Screebo. Verify touchscreen works.
Change-Id: I57d55c5f2621d6fafd53b19d12ecad20271cdbb1
Signed-off-by: Zhongtian Wu <wuzhongtian@huaqin.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/75692
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Rui Zhou <zhourui@huaqin.corp-partner.google.com>
diff --git a/src/mainboard/google/rex/variants/screebo/overridetree.cb b/src/mainboard/google/rex/variants/screebo/overridetree.cb
index d66d7bd..8669d95 100644
--- a/src/mainboard/google/rex/variants/screebo/overridetree.cb
+++ b/src/mainboard/google/rex/variants/screebo/overridetree.cb
@@ -13,6 +13,11 @@
option MB_TYPEC 1
option MB_TBT 2
end
+ field TOUCHSCREEN 8 9
+ option TOUCHSCREEN_UNKNOWN 0
+ option TOUCHSCREEN_ILITEK 1
+ option TOUCHSCREEN_ELAN 2
+ end
end
chip soc/intel/meteorlake
@@ -368,6 +373,43 @@
end
end
end
+ device ref i2c1 on
+ chip drivers/i2c/hid
+ register "generic.hid" = ""ILTK0001""
+ register "generic.desc" = ""ILITEK Touchscreen""
+ register "generic.irq" = "ACPI_IRQ_LEVEL_LOW(GPP_C07_IRQ)"
+ register "generic.probed" = "1"
+ register "generic.reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_C01)"
+ register "generic.reset_delay_ms" = "200"
+ register "generic.enable_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPP_C00)"
+ register "generic.enable_delay_ms" = "12"
+ register "generic.stop_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPP_C06)"
+ register "generic.stop_off_delay_ms" = "2"
+ register "generic.has_power_resource" = "1"
+ register "hid_desc_reg_offset" = "0x01"
+ device i2c 41 on
+ probe TOUCHSCREEN TOUCHSCREEN_ILITEK
+ end
+ end
+ chip drivers/i2c/hid
+ register "generic.hid" = ""EKTH7B18U""
+ register "generic.desc" = ""ELAN Touchscreen""
+ register "generic.irq" = "ACPI_IRQ_LEVEL_LOW(GPP_C07_IRQ)"
+ register "generic.probed" = "1"
+ register "generic.reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_C01)"
+ register "generic.reset_delay_ms" = "20"
+ register "generic.reset_off_delay_ms" = "2"
+ register "generic.enable_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPP_C00)"
+ register "generic.enable_delay_ms" = "1"
+ register "generic.stop_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_C06)"
+ register "generic.stop_off_delay_ms" = "2"
+ register "generic.has_power_resource" = "1"
+ register "hid_desc_reg_offset" = "0x01"
+ device i2c 10 on
+ probe TOUCHSCREEN TOUCHSCREEN_ELAN
+ end
+ end
+ end
device ref i2c3 on
chip drivers/i2c/generic
register "hid" = ""ELAN0000""