diff options
| -rw-r--r-- | firmware/target/arm/usb-drv-arc.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/firmware/target/arm/usb-drv-arc.c b/firmware/target/arm/usb-drv-arc.c index 5a08acb..af97e3e 100644 --- a/firmware/target/arm/usb-drv-arc.c +++ b/firmware/target/arm/usb-drv-arc.c @@ -388,6 +388,30 @@ void usb_drv_reset(void) sleep(HZ/20); REG_USBCMD |= USBCMD_CTRL_RESET; while (REG_USBCMD & USBCMD_CTRL_RESET); + +#if CONFIG_CPU == PP5022 || CONFIG_CPU == PP5024 + /* On a CPU which identifies as a PP5022, this + initialization must be done after USB is reset. + */ + outl(inl(0x70000060) | 0xF, 0x70000060); + outl(inl(0x70000028) | 0x10000, 0x70000028); + outl(inl(0x70000028) & ~0x10000, 0x70000028); + outl(inl(0x70000060) & ~0x20, 0x70000060); + udelay(10); + outl(inl(0x70000060) | 0x20, 0x70000060); + udelay(10); + outl((inl(0x70000060) & ~0xF) | 4, 0x70000060); + udelay(10); + outl(inl(0x70000060) & ~0x20, 0x70000060); + udelay(10); + outl(inl(0x70000060) & ~0xF, 0x70000060); + udelay(10); + outl(inl(0x70000060) | 0x20, 0x70000060); + udelay(10); + outl(inl(0x70000028) | 0x800, 0x70000028); + outl(inl(0x70000028) & ~0x800, 0x70000028); + while (inl(0x70000028) & 0x80); +#endif } /* One-time driver startup init */ |