[coreboot-gerrit] [M] Change in coreboot[main]: mb/google/nissa/var/pujjoga: Add FW_CONFIG probe for WWAN devices

[Leo Chou (Code Review)]

Leo Chou has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/82701?usp=email )

Change subject: mb/google/nissa/var/pujjoga: Add FW_CONFIG probe for WWAN devices
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mb/google/nissa/var/pujjoga: Add FW_CONFIG probe for WWAN devices

Add FW_CONFIG probe based on pujjoga boxster of below devices:
WWAN

BUG=b:336167281
TEST=Boot to OS and verify the WWAN devices is set based on
fw_cofnig.

Change-Id: I94cb9ffe47888a8b7b5c6837ddfc390a1d2e77d1
Signed-off-by: Leo Chou 
---
M src/mainboard/google/brya/variants/pujjoga/Makefile.mk
A src/mainboard/google/brya/variants/pujjoga/fw_config.c
M src/mainboard/google/brya/variants/pujjoga/overridetree.cb
3 files changed, 51 insertions(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/01/82701/1

diff --git a/src/mainboard/google/brya/variants/pujjoga/Makefile.mk b/src/mainboard/google/brya/variants/pujjoga/Makefile.mk
index d38141c..8ae0e3b 100644
--- a/src/mainboard/google/brya/variants/pujjoga/Makefile.mk
+++ b/src/mainboard/google/brya/variants/pujjoga/Makefile.mk
@@ -3,4 +3,5 @@

romstage-y += gpio.c

+ramstage-$(CONFIG_FW_CONFIG) += fw_config.c
 ramstage-y += gpio.c
diff --git a/src/mainboard/google/brya/variants/pujjoga/fw_config.c b/src/mainboard/google/brya/variants/pujjoga/fw_config.c
new file mode 100644
index 0000000..eaef2a2
--- /dev/null
+++ b/src/mainboard/google/brya/variants/pujjoga/fw_config.c
@@ -0,0 +1,36 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <baseboard/gpio.h>
+#include <baseboard/variants.h>
+#include <console/console.h>
+#include <fw_config.h>
+
+static const struct pad_config wwan_disable_pads[] = {
+	/* A8  : WWAN_RF_DISABLE_ODL */
+	PAD_NC(GPP_A8, NONE),
+	/* A12 : WWAN_PCIE_WAKE_ODL */
+	PAD_NC(GPP_A12, NONE),
+	/* D5  : SRCCLKREQ0# ==> WWAN_CLKREQ_ODL */
+	PAD_NC(GPP_D5, NONE),
+	/* D6  : WWAN_EN */
+	PAD_NC(GPP_D6, NONE),
+	/* D15  : EN_PP2800_WCAM_X ==> WWAN_SAR_DETECT_2_ODL */
+	PAD_NC(GPP_D15, NONE),
+	/* F12 : WWAN_RST_L */
+	PAD_NC_LOCK(GPP_F12, NONE, LOCK_CONFIG),
+	/* H19 : SOC_I2C_SUB_INT_ODL */
+	PAD_NC(GPP_H19, NONE),
+	/* H21  : WCAM_MCLK_R ==> WWAN_PERST_L */
+	PAD_NC_LOCK(GPP_H21, NONE, LOCK_CONFIG),
+	/* H23 : WWAN_SAR_DETECT_ODL */
+	PAD_NC(GPP_H23, NONE),
+};
+
+void fw_config_gpio_padbased_override(struct pad_config *padbased_table)
+{
+	if (fw_config_probe(FW_CONFIG(WWAN, WWAN_ABSENT))) {
+		printk(BIOS_INFO, "Disable WWAN-related GPIO pins.\n");
+		gpio_padbased_override(padbased_table, wwan_disable_pads,
+						ARRAY_SIZE(wwan_disable_pads));
+	}
+}
diff --git a/src/mainboard/google/brya/variants/pujjoga/overridetree.cb b/src/mainboard/google/brya/variants/pujjoga/overridetree.cb
index 5641b06..cd55c66 100644
--- a/src/mainboard/google/brya/variants/pujjoga/overridetree.cb
+++ b/src/mainboard/google/brya/variants/pujjoga/overridetree.cb
@@ -1,3 +1,11 @@
+fw_config
+	field WWAN 3 4
+		option WWAN_ABSENT		0
+		option LTE_PRESENT		1
+		option 5G_PRESENT		2
+	end
+end
+
 chip soc/intel/alderlake
    # Acoustic settings
    register "acoustic_noise_mitigation" = "1"
@@ -298,7 +306,9 @@
    				chip drivers/usb/acpi
    					register "desc" = ""USB2 WWAN""
    					register "type" = "UPC_TYPE_INTERNAL"
-						device ref usb2_port5 on end
+						device ref usb2_port2 on
+							probe WWAN LTE_PRESENT
+						end
    				end
    				chip drivers/usb/acpi
    					register "desc" = ""USB2 UFC""
@@ -334,7 +344,9 @@
    				chip drivers/usb/acpi
    					register "desc" = ""USB3 WWAN""
    					register "type" = "UPC_TYPE_INTERNAL"
-						device ref usb3_port3 on end
+						device ref usb3_port3 on
+							probe WWAN LTE_PRESENT
+						end
    				end
    			end
    		end