[S] Change in coreboot[master]: mb/google/nissa/var/yaviks: Disable SUSCLK based on fw_config

[Martin L Roth (Code Review)]

Martin L Roth has submitted this change. ( https://review.coreboot.org/c/coreboot/+/77383?usp=email )

(

3 is the latest approved patch-set.
No files were changed between the latest approved patch-set and the submitted one.
 )Change subject: mb/google/nissa/var/yaviks: Disable SUSCLK based on fw_config
......................................................................

mb/google/nissa/var/yaviks: Disable SUSCLK based on fw_config

Disable SUSCLK for MT7922 based on FW_CONFIG to avoid power leakage.

BUG=b:296511904, b:294456574
BRANCH=firmware-nissa-15217.B
TEST=build and verified by EE

Change-Id: I9a6bf0ab7cc77f95e0d64f1380eac9e022fc08e4
Signed-off-by: Wisley Chen 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/77383
Reviewed-by: Eric Lai 
Tested-by: build bot (Jenkins) 
---
M src/mainboard/google/brya/variants/yaviks/fw_config.c
M src/mainboard/google/brya/variants/yaviks/overridetree.cb
2 files changed, 14 insertions(+), 0 deletions(-)

Approvals:
  Eric Lai: Looks good to me, approved
  build bot (Jenkins): Verified

diff --git a/src/mainboard/google/brya/variants/yaviks/fw_config.c b/src/mainboard/google/brya/variants/yaviks/fw_config.c
index c0f0d8c..c889c43 100644
--- a/src/mainboard/google/brya/variants/yaviks/fw_config.c
+++ b/src/mainboard/google/brya/variants/yaviks/fw_config.c
@@ -61,6 +61,11 @@
    PAD_NC_LOCK(GPP_H13, NONE, LOCK_CONFIG),
 };

+static const struct pad_config disable_wifi_pch_susclk[] = {
+	/* GPD8 ==> NC */
+	PAD_NC(GPD8, NONE),
+};
+
 void fw_config_gpio_padbased_override(struct pad_config *padbased_table)
 {
    if (fw_config_is_provisioned() && !fw_config_probe(FW_CONFIG(STORAGE, STORAGE_EMMC))) {
@@ -83,4 +88,10 @@
    	gpio_padbased_override(padbased_table, sd_disable_pads,
    			       ARRAY_SIZE(sd_disable_pads));
    }
+	/* SAR_ID_3 for MT7922 */
+	if (fw_config_probe(FW_CONFIG(WIFI_SAR_ID, SAR_ID_3))) {
+		printk(BIOS_INFO, "Disable PCH SUSCLK.\n");
+		gpio_padbased_override(padbased_table, disable_wifi_pch_susclk,
+					ARRAY_SIZE(disable_wifi_pch_susclk));
+	}
 }
diff --git a/src/mainboard/google/brya/variants/yaviks/overridetree.cb b/src/mainboard/google/brya/variants/yaviks/overridetree.cb
index 2dc7ddf..fff0627 100644
--- a/src/mainboard/google/brya/variants/yaviks/overridetree.cb
+++ b/src/mainboard/google/brya/variants/yaviks/overridetree.cb
@@ -7,6 +7,9 @@
    end
    field WIFI_SAR_ID 2 3
    	option SAR_ID_0			0
+		option SAR_ID_1			1
+		option SAR_ID_2			2
+		option SAR_ID_3			3
    end
    field STYLUS 9
    	option STYLUS_ABSENT		0