erebion/coreboot
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

mb/google/fatcat/var/lapis: add ILITEK touchscreen support

Browse source 
This chang adds the necessary configuration for ILITEK touchscreen
(ILIT2901) device. The relevant parameters are from the manufacturer's
email dated October 13th. Furthermore, adding fw_config THC_ILITEK
ensures that the touch functionality of both touchscreens is normal.

BUG=b:455442712
TEST=emerge-fatcat coreboot and chromeos-bootimage,
flash to DUT, ilitek touchscreen can be found by `getevent`,
and no wake-up functionality when the DUT is in sleep mode.

Change-Id: I7611c7b1e1364e48ae87a0d91ad3106130ccc586
Signed-off-by: Hualin Wei <weihualin@huaqin.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/89756
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Weimin Wu <wuweimin@huaqin.corp-partner.google.com>
Reviewed-by: Subrata Banik <subratabanik@google.com>
This commit is contained in:
Hualin Wei 2025-10-20 16:22:37 +08:00 • committed by Subrata Banik
commit 9210f2fd1c
1 changed files with 19 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

19
src/mainboard/google/fatcat/variants/lapis/overridetree.cb
View file

@ -458,6 +458,25 @@ chip soc/intel/pantherlake
probe TOUCHSCREEN THC_RAYDIMU
end
end
chip drivers/intel/touch
register "name" = "INTEL_THC1_NAME"
register "mode" = "THC_HID_I2C_MODE"
register "dev_hidi2c.hid" = ""ILIT2901""
register "dev_hidi2c.cid" = ""PNP0C50""
register "dev_hidi2c.intf.hidi2c.addr" = "0x41"
register "dev_hidi2c.intf.hidi2c.descriptor_address" = "0x0001"
register "enable_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPP_F08)"
register "wake_on_touch" = "true"
# NOTE: Use GpioInt() in _CRS and does not use GPE.
register "wake_gpio" = "ACPI_GPIO_IRQ_LEVEL_LOW_WAKE(GPP_VGPIO3_THC1)"
register "active_ltr" = "1"
register "idle_ltr" = "0"
register "connected_device" = "TH_SENSOR_GENERIC"
register "add_acpi_dma_property" = "true"
device generic 0 on
probe TOUCHSCREEN THC_ILITEK
end
end
end #Touchpenal
device ref hda on