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mb/google/trulo/var/kaladin: Add elan touchscreen support

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New Touchscreen support for kaladin.
Touchscreen controller: ELAN_EKTH3918NBY

BUG=b:432399420

Change-Id: Ia6edc78e11c6dbd5835017f443f272ff3c12b66e
Signed-off-by: wu.garen <wu.garen@inventec.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/88471
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Reviewed-by: Eric Lai <ericllai@google.com>
This commit is contained in:
wu.garen 2025-07-17 17:41:55 +08:00 • committed by Subrata Banik
commit 28848dc4fb
1 changed files with 17 additions and 0 deletions
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17
src/mainboard/google/brya/variants/kaladin/overridetree.cb
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@ -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