From 110aebb4d20d2ce695e9149b45e06379010473b8 Mon Sep 17 00:00:00 2001 From: David Wu Date: Mon, 23 Jun 2025 17:25:17 +0800 Subject: [PATCH] mb/google/nissa/var/riven: Add focaltech touchscreen support This change adds the necessary configuration for the focaltech touchscreen (FTSC1000) device, connected to I2C bus 38. It includes settings for: * HID descriptor * Device description * IRQ configuration * Detection * Reset and enable GPIOs with their respective delays * Power resource handling * HID descriptor register offset Datasheet: FT8112_Data_Sheet_V0.2_HKC20240415.pdf BUG=b:426038745 TEST=emerge-nissa coreboot and focaltech touchscreen can work well. Change-Id: I478924fbebf2a5ecd60bad48b37bfa6581100601 Signed-off-by: David Wu Reviewed-on: https://review.coreboot.org/c/coreboot/+/88174 Tested-by: build bot (Jenkins) Reviewed-by: Subrata Banik Reviewed-by: Eric Lai --- .../google/brya/variants/riven/overridetree.cb | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/src/mainboard/google/brya/variants/riven/overridetree.cb b/src/mainboard/google/brya/variants/riven/overridetree.cb index 842074c9eb..ee3afa616b 100644 --- a/src/mainboard/google/brya/variants/riven/overridetree.cb +++ b/src/mainboard/google/brya/variants/riven/overridetree.cb @@ -289,6 +289,20 @@ chip soc/intel/alderlake register "hid_desc_reg_offset" = "0x01" device i2c 40 on end end + chip drivers/i2c/hid + register "generic.hid" = ""FTSC1000"" + register "generic.desc" = ""Focal Touchscreen"" + register "generic.irq" = "ACPI_IRQ_LEVEL_LOW(GPP_C7_IRQ)" + register "generic.detect" = "1" + register "generic.reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_C1)" + register "generic.reset_delay_ms" = "20" + register "generic.enable_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPP_C0)" + register "generic.enable_delay_ms" = "6" + register "generic.has_power_resource" = "1" + register "generic.use_gpio_for_status" = "true" + register "hid_desc_reg_offset" = "0x01" + device i2c 38 on end + end chip drivers/generic/gpio_keys register "name" = ""PENH"" register "gpio" = "ACPI_GPIO_INPUT_ACTIVE_LOW(GPP_F13)"