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usb: ehci: Add 64-bit controller support

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On EHCI controller with 64-bit address space support, we must initialize
properly the high word for the PCI bus master accesses.

Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Vincent Palatin 2012-12-12 17:55:22 -08:00 committed by Marek Vasut
parent 7c38e90aff
commit 2982837e36
1 changed files with 3 additions and 0 deletions
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3
drivers/usb/host/ehci-hcd.c
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@ -870,6 +870,9 @@ int usb_lowlevel_init(int index, void **controller)
if (ehci_hcd_init(index, &ehcic[index].hccr, &ehcic[index].hcor))
return -1;
#endif
/* Set the high address word (aka segment) for 64-bit controller */
if (ehci_readl(&ehcic[index].hccr->cr_hccparams) & 1)
ehci_writel(ehcic[index].hcor->or_ctrldssegment, 0);
qh_list = &ehcic[index].qh_list;