--- drivers/usb/host/ohci-ssb.c | 39 ++++++++++++++++++++++++++++++++++++--- 1 file changed, 36 insertions(+), 3 deletions(-) --- linux-2.6.28.10.orig/drivers/usb/host/ohci-ssb.c +++ linux-2.6.28.10/drivers/usb/host/ohci-ssb.c @@ -106,10 +106,42 @@ static int ssb_ohci_attach(struct ssb_de int err = -ENOMEM; u32 tmp, flags = 0; - if (dev->id.coreid == SSB_DEV_USB11_HOSTDEV) + if (dev->id.coreid == SSB_DEV_USB11_HOSTDEV) { + /* Put the device into host-mode. */ flags |= SSB_OHCI_TMSLOW_HOSTMODE; - - ssb_device_enable(dev, flags); + ssb_device_enable(dev, flags); + } else if (dev->id.coreid == SSB_DEV_USB20_HOST) { + /* + * USB 2.0 special considerations: + * + * 1. Since the core supports both OHCI and EHCI functions, it must + * only be reset once. + * + * 2. In addition to the standard SSB reset sequence, the Host Control + * Register must be programmed to bring the USB core and various + * phy components out of reset. + */ + ssb_device_enable(dev, 0); + ssb_write32(dev, 0x200, 0x7ff); + udelay(1); + if (dev->id.revision == 1) { // bug in rev 1 + + /* Change Flush control reg */ + tmp = ssb_read32(dev, 0x400); + tmp &= ~8; + ssb_write32(dev, 0x400, tmp); + tmp = ssb_read32(dev, 0x400); + printk("USB20H fcr: 0x%0x\n", tmp); + + /* Change Shim control reg */ + tmp = ssb_read32(dev, 0x304); + tmp &= ~0x100; + ssb_write32(dev, 0x304, tmp); + tmp = ssb_read32(dev, 0x304); + printk("USB20H shim: 0x%0x\n", tmp); + } + } else + ssb_device_enable(dev, 0); hcd = usb_create_hcd(&ssb_ohci_hc_driver, dev->dev, dev_name(dev->dev)); @@ -200,6 +232,7 @@ static int ssb_ohci_resume(struct ssb_de static const struct ssb_device_id ssb_ohci_table[] = { SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_USB11_HOSTDEV, SSB_ANY_REV), SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_USB11_HOST, SSB_ANY_REV), + SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_USB20_HOST, SSB_ANY_REV), SSB_DEVTABLE_END }; MODULE_DEVICE_TABLE(ssb, ssb_ohci_table);