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mb/google/nissa/var/riven: Add elan touchscreen support

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This change adds the necessary configuration for the elan
touchscreen (ELAN9004) device, connected to I2C bus 16.

It includes settings for:
* HID descriptor
* Device description
* IRQ configuration
* Detection
* Reset, stop and enable GPIOs with their respective delays
* Power resource handling
* HID descriptor register offset

BUG=b:348125053 b:348126380
TEST=emerge-nissa coreboot
     boot with elan TS, make sure elan TS is functional.

Change-Id: I64c5a11dfaacfcca34240375d4dca5c76a60f62e
Signed-off-by: David Wu <david_wu@quanta.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83876
Reviewed-by: Eric Lai <ericllai@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>
This commit is contained in:
David Wu 2024-08-12 14:14:00 +08:00 committed by Felix Held
parent f7ed007298
commit e1e16e0cb9
1 changed files with 17 additions and 0 deletions
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17
src/mainboard/google/brya/variants/riven/overridetree.cb
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@ -255,6 +255,23 @@ chip soc/intel/alderlake
register "hid_desc_reg_offset" = "0x01"
device i2c 10 on end
end
chip drivers/i2c/hid
register "generic.hid" = ""ELAN9004""
register "generic.desc" = ""ELAN 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.reset_off_delay_ms" = "2"
register "generic.stop_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_C6)"
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 "hid_desc_reg_offset" = "0x01"
device i2c 16 on end
end
chip drivers/i2c/hid
register "generic.hid" = ""GTCH7503""
register "generic.desc" = ""G2 Touchscreen""