mb/google/dedede/var/kracko: Update LTE USB port configuration

Update LTE USB port configuration at run-time after probing FW_CONFIG.
By default the concerned USB port takes the Type-A port configuration.

BUG=b:178092096
BRANCH=dedede
TEST=Build and boot to OS to check LTE by modem status

Change-Id: If12cc29ddda6d5c32c0bda840a3680e7bf932f89
Signed-off-by: Tony Huang <tony-huang@quanta.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/54671
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

3 files changed, 52 insertions, 0 deletions

diff --git a/src/mainboard/google/dedede/variants/baseboard/Makefile.inc b/src/mainboard/google/dedede/variants/baseboard/Makefile.inc
index 4f87de9c41..a79e163b38 100644
--- a/src/mainboard/google/dedede/variants/baseboard/Makefile.inc
+++ b/src/mainboard/google/dedede/variants/baseboard/Makefile.inc
@@ -3,5 +3,6 @@ bootblock-y += gpio.c
 romstage-y += memory.c
 
 ramstage-y += gpio.c
+ramstage-y += ramstage.c
 
 smm-y += gpio.c
diff --git a/src/mainboard/google/dedede/variants/baseboard/include/baseboard/variants.h b/src/mainboard/google/dedede/variants/baseboard/include/baseboard/variants.h
index a3dcd919d1..78e44b4ae0 100644
--- a/src/mainboard/google/dedede/variants/baseboard/include/baseboard/variants.h
+++ b/src/mainboard/google/dedede/variants/baseboard/include/baseboard/variants.h
@@ -5,6 +5,7 @@
 
 #include <soc/gpio.h>
 #include <stdint.h>
+#include <acpi/acpi_device.h>
 
 /* The next set of functions return the gpio table and fill in the number of
  * entries for each table. */
@@ -42,4 +43,6 @@ void variant_smi_sleep(u8 slp_typ);
 /* Modify devictree settings during ramstage. */
 void variant_devtree_update(void);
 
+/* Modify LTE devictree settings during ramstage. */
+void update_lte_device(struct acpi_gpio *lte_reset_gpio, struct acpi_gpio *lte_enable_gpio);
 #endif /*__BASEBOARD_VARIANTS_H__ */
diff --git a/src/mainboard/google/dedede/variants/baseboard/ramstage.c b/src/mainboard/google/dedede/variants/baseboard/ramstage.c
new file mode 100644
index 0000000000..136fe1354f
--- /dev/null
+++ b/src/mainboard/google/dedede/variants/baseboard/ramstage.c
@@ -0,0 +1,48 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <acpi/acpi_device.h>
+#include <baseboard/variants.h>
+#include <console/console.h>
+#include <drivers/usb/acpi/chip.h>
+#include <fw_config.h>
+#include <gpio.h>
+#include <soc/pci_devs.h>
+
+#define LTE_USB_PORT_ID 3
+#define LTE_USB_PORT_TYPE 2
+
+void update_lte_device(struct acpi_gpio *lte_reset_gpio, struct acpi_gpio *lte_enable_gpio)
+{
+	struct device *xhci, *hub = NULL, *port = NULL;
+	struct drivers_usb_acpi_config *config;
+
+	xhci = pcidev_path_on_root(PCH_DEVFN_XHCI);
+	if (!xhci) {
+		printk(BIOS_ERR, "%s: Could not locate XHCI device in DT\n", __func__);
+		return;
+	}
+
+	while ((hub = dev_bus_each_child(xhci->link_list, hub)) != NULL) {
+		while ((port = dev_bus_each_child(hub->link_list, port)) != NULL) {
+			if (!port->chip_info || port->path.usb.port_id != LTE_USB_PORT_ID)
+				continue;
+
+			if (fw_config_probe(FW_CONFIG(DB_PORTS, DB_PORTS_LTE_HDMI)) ||
+				fw_config_probe(FW_CONFIG(DB_PORTS, DB_PORTS_1C_LTE)) ||
+				fw_config_probe(FW_CONFIG(DB_PORTS, DB_PORTS_1A_HDMI_LTE))) {
+
+				config = port->chip_info;
+				config->type = UPC_TYPE_INTERNAL;
+				if (port->path.usb.port_type == LTE_USB_PORT_TYPE) {
+					config->has_power_resource = 1;
+					memcpy(&config->reset_gpio, &lte_reset_gpio,
+								sizeof(config->reset_gpio));
+					config->reset_off_delay_ms = 20;
+					memcpy(&config->enable_gpio, &lte_enable_gpio,
+								sizeof(config->enable_gpio));
+					config->enable_delay_ms = 20;
+				}
+			}
+		}
+	}
+}