diff options
Diffstat (limited to 'drivers/usb/host/ehci-hcd.c')
| -rw-r--r-- | drivers/usb/host/ehci-hcd.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index 3df32fa8c8ae..1e0b9b97891e 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -590,11 +590,16 @@ static int ehci_run (struct usb_hcd *hcd) */ hcc_params = ehci_readl(ehci, &ehci->caps->hcc_params); if (HCC_64BIT_ADDR(hcc_params)) { - ehci_writel(ehci, 0, &ehci->regs->segment); -#if 0 -// this is deeply broken on almost all architectures +#ifdef CONFIG_ARM64 + ehci_writel(ehci, ehci->periodic_dma >> 32, &ehci->regs->segment); + /* + * this is deeply broken on almost all architectures + * but arm64 can use it so enable it + */ if (!dma_set_mask(hcd->self.controller, DMA_BIT_MASK(64))) ehci_info(ehci, "enabled 64bit DMA\n"); +#else + ehci_writel(ehci, 0, &ehci->regs->segment); #endif } |