[S] Change in coreboot[master]: mb/google/rex/var/screebo: Enable touchscreen

[Felix Held (Code Review)]

Felix Held has submitted this change. ( https://review.coreboot.org/c/coreboot/+/75692?usp=email )

Change subject: mb/google/rex/var/screebo: Enable touchscreen
......................................................................

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 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/75692
Tested-by: build bot (Jenkins) 
Reviewed-by: Subrata Banik 
Reviewed-by: Eric Lai 
Reviewed-by: Rui Zhou 
---
M src/mainboard/google/rex/variants/screebo/overridetree.cb
1 file changed, 42 insertions(+), 0 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Eric Lai: Looks good to me, approved
  Subrata Banik: Looks good to me, approved
  Rui Zhou: Looks good to me, but someone else must approve

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""