Aaron Durbin submitted this change.
mb/google/zork/ezkinil: Fix ELAN touchscreen ACPI node
a. USI_REPORT_EN is no longer set to high in coreboot. Instead
GPIO_144 is exposed as stop_gpio in ACPI to allow OS to control this
pad as required.
b. Add Delay after stop_gpio Low - 300ms
BUG=b:162263398
Signed-off-by: Lucas Chen <lucas.chen@quanta.corp-partner.google.com>
Change-Id: I3d4dcb6e5cae5d9515abfd415315ec4114ca80b4
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44107
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
---
M src/mainboard/google/zork/variants/ezkinil/overridetree.cb
1 file changed, 3 insertions(+), 0 deletions(-)
diff --git a/src/mainboard/google/zork/variants/ezkinil/overridetree.cb b/src/mainboard/google/zork/variants/ezkinil/overridetree.cb
index b06f4bc..1808a0f 100644
--- a/src/mainboard/google/zork/variants/ezkinil/overridetree.cb
+++ b/src/mainboard/google/zork/variants/ezkinil/overridetree.cb
@@ -88,7 +88,10 @@
register "generic.irq_gpio" = "ACPI_GPIO_IRQ_EDGE_LOW(GPIO_12)"
register "generic.reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_140)"
register "generic.reset_delay_ms" = "20"
+ register "generic.stop_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPIO_144)"
+ register "generic.stop_delay_ms" = "300"
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
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