[coreboot-gerrit] Change in ...coreboot[master]: google/kukui: Configure AP_IN_SLEEP_L correctly.

[You-Cheng Syu (Code Review)]

You-Cheng Syu has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/32120

Change subject: google/kukui: Configure AP_IN_SLEEP_L correctly.
......................................................................

google/kukui: Configure AP_IN_SLEEP_L correctly.

This pin should be set to its alternative function SRCLKENA0 instead of
GPIO, so that SPM can control it.

BUG=b:113367227
BRANCH=none
TEST=1. Boot. Run 'powerinfo' in EC console and see power state in S0.
     2. Run 'powerd_dbus_suspend --wakeup_timeout=10', and then
        run 'powerinfo' in EC console and see power state in S3.
     3. Wait until AP resume.
     4. Run 'powerinfo' in EC console and see power state back to S0.

Change-Id: I0a7e34f95381dec17eb6d166d6552c12e021bd9a
Signed-off-by: You-Cheng Syu 
---
M src/mainboard/google/kukui/early_init.c
1 file changed, 1 insertion(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/20/32120/1

diff --git a/src/mainboard/google/kukui/early_init.c b/src/mainboard/google/kukui/early_init.c
index a16a335..1193bb3 100644
--- a/src/mainboard/google/kukui/early_init.c
+++ b/src/mainboard/google/kukui/early_init.c
@@ -32,8 +32,7 @@

setup_chromeos_gpios();

-	/* Declare we are in S0 */
-	gpio_output(AP_IN_SLEEP_L, 1);
+	gpio_set_mode(AP_IN_SLEEP_L, PAD_SRCLKENA0_FUNC_SRCLKENA0);

mtk_spi_init(CONFIG_DRIVER_TPM_SPI_BUS, SPI_PAD0_MASK, 1 * MHz);
    gpio_eint_configure(CR50_IRQ, IRQ_TYPE_EDGE_RISING);