board: sifive: unmatched: reset USB hub, PCIe-USB bridge, and ULPI device in SPL
Ensure USB hub, PCIe-USB bridge, and ULPI device to be reset
even if the rebooting is without power-cycling.
Signed-off-by: Vincent Chen <vincent.chen@sifive.com>
Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
diff --git a/board/sifive/unmatched/spl.c b/board/sifive/unmatched/spl.c
index b598f9f..d566327 100644
--- a/board/sifive/unmatched/spl.c
+++ b/board/sifive/unmatched/spl.c
@@ -16,6 +16,9 @@
#include <asm/arch/gpio.h>
#include <asm/arch/spl.h>
+#define UBRDG_RESET SIFIVE_GENERIC_GPIO_NR(0, 7)
+#define ULPI_RESET SIFIVE_GENERIC_GPIO_NR(0, 9)
+#define UHUB_RESET SIFIVE_GENERIC_GPIO_NR(0, 11)
#define GEM_PHY_RESET SIFIVE_GENERIC_GPIO_NR(0, 12)
#define MODE_SELECT_REG 0x1000
@@ -61,6 +64,21 @@
return ret;
}
+static inline int spl_usb_pcie_bridge_init(void)
+{
+ return spl_reset_device_by_gpio("usb_pcie_bridge_reset", UBRDG_RESET, 3000);
+}
+
+static inline int spl_usb_hub_init(void)
+{
+ return spl_reset_device_by_gpio("usb_hub_reset", UHUB_RESET, 100);
+}
+
+static inline int spl_ulpi_init(void)
+{
+ return spl_reset_device_by_gpio("ulpi_reset", ULPI_RESET, 1);
+}
+
int spl_board_init_f(void)
{
int ret;
@@ -77,6 +95,24 @@
goto end;
}
+ ret = spl_usb_pcie_bridge_init();
+ if (ret) {
+ debug("USB Bridge (ASM1042A) init failed: %d\n", ret);
+ goto end;
+ }
+
+ ret = spl_usb_hub_init();
+ if (ret) {
+ debug("USB Hub (ASM1074) init failed: %d\n", ret);
+ goto end;
+ }
+
+ ret = spl_ulpi_init();
+ if (ret) {
+ debug("USB 2.0 PHY (USB3320C) init failed: %d\n", ret);
+ goto end;
+ }
+
end:
return ret;
}