From 1d17c9522fb342acc46da12b84591b736db388ef Mon Sep 17 00:00:00 2001 From: Eren Peng Date: Wed, 11 Mar 2026 13:52:42 +0800 Subject: [PATCH] mb/google/trulo/var/kaladin: Add LGD touchscreen Add LGD touchscreen for kaladin BUG=b:484114852 TEST=build and flash on kaladin,verify touch function works normally Change-Id: I1f204569767e7eab17bc44dcd060d606ba87a38e Signed-off-by: Eren Peng Reviewed-on: https://review.coreboot.org/c/coreboot/+/91647 Tested-by: build bot (Jenkins) Reviewed-by: Eric Lai --- .../brya/variants/kaladin/overridetree.cb | 21 ++++++++++++++++++- 1 file changed, 20 insertions(+), 1 deletion(-) diff --git a/src/mainboard/google/brya/variants/kaladin/overridetree.cb b/src/mainboard/google/brya/variants/kaladin/overridetree.cb index 8f7f8e2be5..226b4f41bc 100644 --- a/src/mainboard/google/brya/variants/kaladin/overridetree.cb +++ b/src/mainboard/google/brya/variants/kaladin/overridetree.cb @@ -11,11 +11,12 @@ fw_config option MB_USB_1C_1A 0 option MB_USB_2C_1A 1 end - field TOUCH_PANEL 4 5 + field TOUCH_PANEL 4 8 option TOUCH_ELAN_TOP 0 option TOUCH_ELAN_DBTS 1 option TOUCH_GTH1563_TOP 2 option TOUCH_GTH7503_TOP 3 + option TOUCH_LXST2024_TOP 4 end field WIFI_SAR 13 15 option WIFI_SAR_ID_0 0 @@ -600,6 +601,24 @@ chip soc/intel/alderlake probe TOUCH_PANEL TOUCH_ELAN_DBTS end end + chip drivers/i2c/hid + register "generic.hid" = ""LXST2024"" + register "generic.desc" = ""LGD Touchscreen"" + register "generic.irq" = "ACPI_IRQ_LEVEL_LOW(GPP_E11_IRQ)" + register "generic.reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_C1)" + register "generic.reset_delay_ms" = "20" + register "generic.reset_off_delay_ms" = "2" + register "generic.stop_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_C4)" + register "generic.stop_delay_ms" = "280" + register "generic.stop_off_delay_ms" = "2" + register "generic.enable_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPP_C0)" + register "generic.enable_delay_ms" = "1" + register "generic.has_power_resource" = "1" + register "hid_desc_reg_offset" = "0x01" + device i2c 10 on + probe TOUCH_PANEL TOUCH_LXST2024_TOP + end + end end #I2C1 device ref i2c5 on chip drivers/i2c/generic