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mb/google/drallion: Configure IRQs as level triggered for HID over I2C 

As per HID over I2C Protocol Specification[1] Version 1.00 Section 7.4,
the interrupt line used by the device is required to be level triggered.
Hence, this change updates the configuration of the HID over I2C devices
to be level triggered.

References:
[1] http://download.microsoft.com/download/7/d/d/7dd44bb7-2a7a-4505-ac1c-7227d3d96d5b/hid-over-i2c-protocol-spec-v1-0.docx

BUG=b:172846122
TEST=./util/abuild/abuild

Change-Id: Iff00667377eecedcf0b83bcfc0bf50bd4c3411eb
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/47419
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
This commit is contained in:
Karthikeyan Ramasubramanian 2020-11-10 14:34:26 -07:00 committed by Tim Wawrzynczak
parent ff630715ce
commit 62e957d029
1 changed files with 1 additions and 1 deletions
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2
src/mainboard/google/drallion/variants/drallion/devicetree.cb
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@ -359,7 +359,7 @@ chip soc/intel/cannonlake
chip drivers/i2c/hid
register "generic.hid" = ""ELAN900C""
register "generic.desc" = ""ELAN Touchscreen""
register "generic.irq" = "ACPI_IRQ_EDGE_LOW(GPP_C23_IRQ)"
register "generic.irq" = "ACPI_IRQ_LEVEL_LOW(GPP_C23_IRQ)"
register "generic.probed" = "1"
register "generic.reset_gpio" =
"ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_D15)"