commit 764167b8ca91b136b068f1d3f03adf5f50af615a
author Dtrain Hsu <dtrain_hsu@compal.corp-partner.google.com> Thu May 18 17:34:56 2023 +0800
committer Felix Held <felix-coreboot@felixheld.de> Fri May 26 13:44:01 2023 +0000
tree 10cfff9ddb34efa32cbeea0e22de8a41826426c2
parent 9be583e65d4ef16761feb38eb5c978bbfd8f630d

mb/google/nissa/var/uldren: Add fw_config probe for lte

Use fw_config to probe lte.

BUG=b:283199751
BRANCH=firmware-nissa-15217.B
TEST=emerge-nissa coreboot chromeos-bootimage

Change-Id: I5596f3536b0a21453f89e67615acabbbf6a8409b
Signed-off-by: Dtrain Hsu <dtrain_hsu@compal.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/75337
Reviewed-by: Derek Huang <derekhuang@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/google/brya/variants/uldren/overridetree.cb

diff --git a/src/mainboard/google/brya/variants/uldren/overridetree.cb b/src/mainboard/google/brya/variants/uldren/overridetree.cb
index 4f3dfe2..8b5e098 100644
--- a/src/mainboard/google/brya/variants/uldren/overridetree.cb
+++ b/src/mainboard/google/brya/variants/uldren/overridetree.cb
@@ -1,4 +1,8 @@
 fw_config
+	field DB_LTE 1 1
+		option LTE_ABSENT	0
+		option LTE_PRESENT	1
+	end
 	field TOUCHPAD 8 9
 		option TOUCHPAD_UNKNOWN	0
 		option TOUCHPAD_EKT3744	1
@@ -377,7 +381,9 @@
 					chip drivers/usb/acpi
 						register "desc" = ""USB2 WWAN""
 						register "type" = "UPC_TYPE_INTERNAL"
-						device ref usb2_port4 on end
+						device ref usb2_port4 on
+							probe DB_LTE LTE_PRESENT
+						end
 					end
 					chip drivers/usb/acpi
 						register "desc" = ""USB2 User Facing Camera""
@@ -405,7 +411,9 @@
 					chip drivers/usb/acpi
 						register "desc" = ""USB3 WWAN""
 						register "type" = "UPC_TYPE_INTERNAL"
-						device ref usb3_port2 on end
+						device ref usb3_port2 on
+							probe DB_LTE LTE_PRESENT
+						end
 					end
 				end
 			end

src/mainboard/google/brya/variants/uldren/variant.c

diff --git a/src/mainboard/google/brya/variants/uldren/variant.c b/src/mainboard/google/brya/variants/uldren/variant.c
index d9a6565..f5b0609 100644
--- a/src/mainboard/google/brya/variants/uldren/variant.c
+++ b/src/mainboard/google/brya/variants/uldren/variant.c
@@ -16,6 +16,15 @@
 	PAD_NC(GPP_H7, NONE),
 };
 
+static const struct pad_config lte_disable_pads[] = {
+	/* A8  : WWAN_RF_DISABLE_ODL */
+	PAD_NC(GPP_A8, NONE),
+	/* D6  : SRCCLKREQ1# ==> WWAN_EN */
+	PAD_NC(GPP_D6, NONE),
+	/* F12 : WWAN_RST_L */
+	PAD_NC_LOCK(GPP_F12, NONE, LOCK_CONFIG),
+};
+
 const char *get_wifi_sar_cbfs_filename(void)
 {
 	return "wifi_sar_0.hex";
@@ -28,4 +37,9 @@
 		gpio_padbased_override(padbased_table, touchscreen_disable_pads,
 						ARRAY_SIZE(touchscreen_disable_pads));
 	}
+	if (fw_config_probe(FW_CONFIG(DB_LTE, LTE_ABSENT))) {
+		printk(BIOS_INFO, "Disable LTE GPIO pins.\n");
+		gpio_padbased_override(padbased_table, lte_disable_pads,
+						ARRAY_SIZE(lte_disable_pads));
+	}
 }