diff options
| author | Karthikeyan Ramasubramanian <kramasub@google.com> | 2020-11-10 14:57:10 -0700 |
|---|---|---|
| committer | Tim Wawrzynczak <twawrzynczak@chromium.org> | 2020-11-13 01:29:13 +0000 |
| commit | 3614270a7646191d17b2a2cc6009e3c0bb41d47a (patch) | |
| tree | 5f4938cf6a8268af44010c1a70c6f7920dd08f3e /src/mainboard/google/reef/variants/snappy | |
| parent | c37e1e6d071cc9c64e99cffa4250e912f70e6ef0 (diff) | |
mb/google/reef: 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: Ifc6dd5f6549e7501f350afe8456a9a8096edcc25
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/47425
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Diffstat (limited to 'src/mainboard/google/reef/variants/snappy')
| -rw-r--r-- | src/mainboard/google/reef/variants/snappy/devicetree.cb | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/mainboard/google/reef/variants/snappy/devicetree.cb b/src/mainboard/google/reef/variants/snappy/devicetree.cb index 1a007e6545..3be68ddb5c 100644 --- a/src/mainboard/google/reef/variants/snappy/devicetree.cb +++ b/src/mainboard/google/reef/variants/snappy/devicetree.cb @@ -236,7 +236,7 @@ chip soc/intel/apollolake chip drivers/i2c/hid register "generic.hid" = ""WDHT0002"" register "generic.desc" = ""WDT Touchscreen"" - register "generic.irq" = "ACPI_IRQ_EDGE_LOW(GPIO_21_IRQ)" + register "generic.irq" = "ACPI_IRQ_LEVEL_LOW(GPIO_21_IRQ)" register "generic.probed" = "1" register "generic.reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_36)" register "generic.reset_delay_ms" = "130" @@ -250,7 +250,7 @@ chip soc/intel/apollolake chip drivers/i2c/hid register "generic.hid" = ""GTCH7503"" register "generic.desc" = ""G2TOUCH Touchscreen"" - register "generic.irq" = "ACPI_IRQ_EDGE_LOW(GPIO_21_IRQ)" + register "generic.irq" = "ACPI_IRQ_LEVEL_LOW(GPIO_21_IRQ)" register "generic.probed" = "1" register "generic.reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_36)" register "generic.reset_delay_ms" = "50" |