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mb/google/nissa/var/craask: Add focaltech touchscreen support

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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 <david_wu@quanta.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/88284
Reviewed-by: Ren Kuo <ren.kuo@quanta.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
David Wu 2025-07-03 16:20:41 +08:00 • committed by Matt DeVillier
commit 03c331399c
1 changed files with 17 additions and 0 deletions
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17
src/mainboard/google/brya/variants/craask/overridetree.cb
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@ -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