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mb/google/guybrush/var/dewatt: Add Elan touchscreen 

Add Elan 6918 touchscreen for dewatt. (EKTH6918 Product Spec V0.5)

BUG=b:208373433
TEST=emerge-guybrush coreboot chromeos-bootimage. Teseted with Elan 6918 touchscreen.

Signed-off-by: Kenneth Chan <kenneth.chan@quanta.corp-partner.google.com>
Change-Id: I28a7f5891e09ffa393c93881be68641d955efdf8
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59975
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Rob Barnes <robbarnes@google.com>
This commit is contained in:
Kenneth Chan 2021-12-08 18:56:50 +08:00 committed by Felix Held
parent d76d2e275f
commit 38afe9e31c
1 changed files with 19 additions and 0 deletions
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19
src/mainboard/google/guybrush/variants/dewatt/overridetree.cb
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@ -63,4 +63,23 @@ chip soc/amd/cezanne
device i2c 2c on end device i2c 2c on end
end end
end # I2C0 end # I2C0
device ref i2c_1 on
chip drivers/i2c/hid
register "generic.hid" = ""ELAN6918""
register "generic.desc" = ""ELAN Touchscreen""
register "generic.irq_gpio" = "ACPI_GPIO_IRQ_LEVEL_LOW(GPIO_89)"
register "generic.probed" = "1"
register "generic.reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPIO_121)"
register "generic.reset_delay_ms" = "20"
register "generic.reset_off_delay_ms" = "2"
register "generic.stop_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPIO_120)"
register "generic.stop_off_delay_ms" = "2"
register "generic.enable_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_68)"
register "generic.enable_delay_ms" = "1"
register "generic.has_power_resource" = "1"
register "generic.disable_gpio_export_in_crs" = "1"
register "hid_desc_reg_offset" = "0x01"
device i2c 10 on end
end
end # I2C1
end # chip soc/amd/cezanne end # chip soc/amd/cezanne