mb/google/corsola: Initialize USB port 0

The default MT8186 platform is to initialize USB3 port 1.
Use option bit 27 in fw_config to enable initialization of USB2 port 0
to support devices mounted on it.

BUG=b:335124437
TEST=boot to OS from USB-A
     boot to OS from SD Card
BRANCH=corsola

Change-Id: I725b80593f5fc498a204bf47f943c36ccbd78134
Signed-off-by: Wentao Qin <qinwentao@huaqin.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/82089
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yidi Lin <yidilin@google.com>

3 files changed, 29 insertions, 2 deletions

diff --git a/src/soc/mediatek/common/include/soc/usb_common.h b/src/soc/mediatek/common/include/soc/usb_common.h
index d390b70ffa..249959b910 100644
--- a/src/soc/mediatek/common/include/soc/usb_common.h
+++ b/src/soc/mediatek/common/include/soc/usb_common.h
@@ -4,6 +4,7 @@
 #define SOC_MEDIATEK_USB_COMMON_H
 
 #include <stddef.h>
+#include <stdint.h>
 
 /* ip_pw_ctrl0 */
 #define CTRL0_IP_SW_RST			(0x1 << 0)
@@ -162,5 +163,7 @@ void mtk_usb_prepare(void);
 void mtk_usb_adjust_phy_shift(void);
 
 void setup_usb_host(void);
-
+void update_usb_base_regs(uintptr_t ippc_base, uintptr_t sif_base);
+void setup_usb_secondary_host(void);
+void setup_usb_host_controller(void);
 #endif
diff --git a/src/soc/mediatek/common/usb.c b/src/soc/mediatek/common/usb.c
index b9fe83529d..cc2503b4e5 100644
--- a/src/soc/mediatek/common/usb.c
+++ b/src/soc/mediatek/common/usb.c
@@ -13,6 +13,12 @@
 static struct ssusb_ippc_regs *ippc_regs = (void *)(SSUSB_IPPC_BASE);
 static struct ssusb_sif_port *phy_ports = (void *)(SSUSB_SIF_BASE);
 
+void update_usb_base_regs(uintptr_t ippc_base, uintptr_t sif_base)
+{
+	ippc_regs = (void *)ippc_base;
+	phy_ports = (void *)sif_base;
+}
+
 static void phy_index_power_on(int index)
 {
 	struct ssusb_sif_port *phy = phy_ports + index;
@@ -150,7 +156,7 @@ __weak void mtk_usb_adjust_phy_shift(void)
 	/* do nothing */
 }
 
-void setup_usb_host(void)
+void setup_usb_host_controller(void)
 {
 	u3p_msg("Setting up USB HOST controller...\n");
 
@@ -164,3 +170,9 @@ void setup_usb_host(void)
 	mtk_usb_adjust_phy_shift();
 	u3p_msg("phy power-on done.\n");
 }
+
+void setup_usb_host(void)
+{
+	update_usb_base_regs(SSUSB_IPPC_BASE, SSUSB_SIF_BASE);
+	setup_usb_host_controller();
+}
diff --git a/src/soc/mediatek/common/usb_secondary.c b/src/soc/mediatek/common/usb_secondary.c
new file mode 100644
index 0000000000..ee85630250
--- /dev/null
+++ b/src/soc/mediatek/common/usb_secondary.c
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <soc/addressmap.h>
+#include <soc/usb.h>
+
+void setup_usb_secondary_host(void)
+{
+	/* We always consider USB2 port as the secondary UBS host regardless of the
+	   register naming */
+	update_usb_base_regs(SSUSB_IPPC_BASE_P0, SSUSB_SIF_BASE_P0);
+	setup_usb_host_controller();
+}