From 03c331399c317760e499f728328bd58eeccf3cb2 Mon Sep 17 00:00:00 2001 From: David Wu Date: Thu, 3 Jul 2025 16:20:41 +0800 Subject: [PATCH] mb/google/nissa/var/craask: 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:429335394 TEST=emerge-nissa coreboot and focaltech touchscreen can work well. Change-Id: Ic1c4bea599db23d5bc760bb7a54a2581cb293ce3 Signed-off-by: David Wu Reviewed-on: https://review.coreboot.org/c/coreboot/+/88284 Reviewed-by: Ren Kuo Tested-by: build bot (Jenkins) --- .../google/brya/variants/craask/overridetree.cb | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/src/mainboard/google/brya/variants/craask/overridetree.cb b/src/mainboard/google/brya/variants/craask/overridetree.cb index 576d9f1f4d..f95d0ae2c2 100644 --- a/src/mainboard/google/brya/variants/craask/overridetree.cb +++ b/src/mainboard/google/brya/variants/craask/overridetree.cb @@ -38,6 +38,7 @@ fw_config option TS_UNPROVISIONED 0 option TS_GTCH7503 1 option TS_ILTK0001 2 + option TS_FTSC1000 3 end end @@ -412,6 +413,22 @@ chip soc/intel/alderlake probe TS_SOURCE TS_ILTK0001 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 + probe TS_SOURCE TS_FTSC1000 + end + end end device ref i2c2 on chip drivers/intel/mipi_camera