mb/google/rex: Add `disable_gpio_export_in_crs` for rex
None of the touchscreens (over I2C) used in the rex program requires
exporting GPIOs in the ACPI _CRS method.
This can cause i2c devices to malfunction or cause timing
sequence violations if ACPI exports a PowerResource for the
device that uses GPIOs that are also exported in _CRS.
BUG=none
TEST=Able to build and boot Google, Rex platform.
Without this patch:
[ERROR] I2C: 00:10: Exposing GPIOs in Power Resource and _CRS
With this patch:
None
Signed-off-by: Subrata Banik <subratabanik@google.com>
Change-Id: I578a60eff27f94d6dc94b900604bc7560337d60b
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69612
Reviewed-by: Ivy Jian <ivy.jian@quanta.corp-partner.google.com>
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
Reviewed-by: Sridhar Siricilla <sridhar.siricilla@intel.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/mainboard/google/rex/variants/rex0/overridetree.cb b/src/mainboard/google/rex/variants/rex0/overridetree.cb
index a7f5a95..f3b0fab 100644
--- a/src/mainboard/google/rex/variants/rex0/overridetree.cb
+++ b/src/mainboard/google/rex/variants/rex0/overridetree.cb
@@ -357,6 +357,7 @@
register "generic.stop_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_C06)"
register "generic.stop_off_delay_ms" = "2"
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