[coreboot-gerrit] [S] Change in coreboot[master]: mb/google/rex: Add `disable_gpio_export_in_crs` for rex

[Subrata Banik (Code Review)]

Subrata Banik has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/69612 )

Change subject: mb/google/rex: Add `disable_gpio_export_in_crs` for rex
......................................................................

mb/google/rex: Add `disable_gpio_export_in_crs` for rex

None of the touchscreens used in the rex program should require
exporting of GPIOs in the ACPI _CRS method for any i2c
device.

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 
Change-Id: I578a60eff27f94d6dc94b900604bc7560337d60b
---
M src/mainboard/google/rex/variants/rex0/overridetree.cb
1 file changed, 30 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/12/69612/1

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