From 2982837e36e56584b0ab0256dd82d306e4ba1249 Mon Sep 17 00:00:00 2001 From: Vincent Palatin Date: Wed, 12 Dec 2012 17:55:22 -0800 Subject: [PATCH] usb: ehci: Add 64-bit controller support 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 Signed-off-by: Simon Glass --- drivers/usb/host/ehci-hcd.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index 7f98a6354a..20309adfb0 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -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; -- 2.25.1