diff options
Diffstat (limited to 'src/southbridge/intel/lynxpoint/usb_ehci.c')
| -rw-r--r-- | src/southbridge/intel/lynxpoint/usb_ehci.c | 31 |
1 files changed, 22 insertions, 9 deletions
diff --git a/src/southbridge/intel/lynxpoint/usb_ehci.c b/src/southbridge/intel/lynxpoint/usb_ehci.c index fd7c659edd..f06151b138 100644 --- a/src/southbridge/intel/lynxpoint/usb_ehci.c +++ b/src/southbridge/intel/lynxpoint/usb_ehci.c @@ -26,20 +26,33 @@ #include <usbdebug.h> #include <arch/io.h> -static void usb_ehci_init(struct device *dev) +static void usb_ehci_clock_gating(struct device *dev) { u32 reg32; - /* Disable Wake on Disconnect in RMH */ - reg32 = RCBA32(0x35b0); - reg32 |= 0x22; - RCBA32(0x35b0) = reg32; + /* IOBP 0xE5004001[7:6] = 11b */ + pch_iobp_update(0xe5004001, ~0, (1 << 7)|(1 << 6)); + + /* Dx:F0:DCh[5,2,1] = 111b + * Dx:F0:DCh[0] = 1b when EHCI controller is disabled */ + reg32 = pci_read_config32(dev, 0xdc); + reg32 |= (1 << 5) | (1 << 2) | (1 << 1); + pci_write_config32(dev, 0xdc, reg32); + + /* Dx:F0:78h[1:0] = 11b */ + reg32 = pci_read_config32(dev, 0x78); + reg32 |= (1 << 1) | (1 << 0); + pci_write_config32(dev, 0x78, reg32); +} +static void usb_ehci_init(struct device *dev) +{ printk(BIOS_DEBUG, "EHCI: Setting up controller.. "); - reg32 = pci_read_config32(dev, PCI_COMMAND); - reg32 |= PCI_COMMAND_MASTER; - //reg32 |= PCI_COMMAND_SERR; - pci_write_config32(dev, PCI_COMMAND, reg32); + + usb_ehci_clock_gating(dev); + + /* Disable Wake on Disconnect in RMH */ + RCBA32_OR(0x35b0, 0x00000022); printk(BIOS_DEBUG, "done.\n"); } |