From 62e957d0296c3f4ce7682300272f223796a782ee Mon Sep 17 00:00:00 2001 From: Karthikeyan Ramasubramanian Date: Tue, 10 Nov 2020 14:34:26 -0700 Subject: 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 Reviewed-on: https://review.coreboot.org/c/coreboot/+/47419 Tested-by: build bot (Jenkins) Reviewed-by: Furquan Shaikh --- src/mainboard/google/drallion/variants/drallion/devicetree.cb | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/mainboard/google/drallion/variants/drallion/devicetree.cb b/src/mainboard/google/drallion/variants/drallion/devicetree.cb index f3ce6286be..90bd260207 100644 --- a/src/mainboard/google/drallion/variants/drallion/devicetree.cb +++ b/src/mainboard/google/drallion/variants/drallion/devicetree.cb @@ -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)" -- cgit v1.2.3