From 28848dc4fb30571bbf62322becf9b8dbd06b1388 Mon Sep 17 00:00:00 2001 From: "wu.garen" Date: Thu, 17 Jul 2025 17:41:55 +0800 Subject: [PATCH] mb/google/trulo/var/kaladin: Add elan touchscreen support New Touchscreen support for kaladin. Touchscreen controller: ELAN_EKTH3918NBY BUG=b:432399420 Change-Id: Ia6edc78e11c6dbd5835017f443f272ff3c12b66e Signed-off-by: wu.garen Reviewed-on: https://review.coreboot.org/c/coreboot/+/88471 Reviewed-by: Kapil Porwal Tested-by: build bot (Jenkins) Reviewed-by: Subrata Banik Reviewed-by: Eric Lai --- .../brya/variants/kaladin/overridetree.cb | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/src/mainboard/google/brya/variants/kaladin/overridetree.cb b/src/mainboard/google/brya/variants/kaladin/overridetree.cb index cd264f6de5..c58dc8659d 100644 --- a/src/mainboard/google/brya/variants/kaladin/overridetree.cb +++ b/src/mainboard/google/brya/variants/kaladin/overridetree.cb @@ -447,6 +447,23 @@ chip soc/intel/alderlake register "hid_desc_reg_offset" = "0x01" device i2c 10 on end end + chip drivers/i2c/hid + register "generic.hid" = ""ELAN2513"" + register "generic.desc" = ""ELAN 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 "generic.use_gpio_for_status" = "true" + register "hid_desc_reg_offset" = "0x01" + device i2c 15 on end + end end #I2C1 device ref i2c5 on chip drivers/i2c/generic