From: SangeethaRao <sangeetha....@lsi.com>
Also, updated check for DTS compatible field to match the DTS
Signed-off-by: SangeethaRao <sangeetha....@lsi.com>
---
drivers/usb/host/ehci-ci13612.c | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)
diff --git a/drivers/usb/host/ehci-ci13612.c b/drivers/usb/host/ehci-ci13612.c
index 02a6d29..c8a8a5d 100644
--- a/drivers/usb/host/ehci-ci13612.c
+++ b/drivers/usb/host/ehci-ci13612.c
@@ -125,6 +125,7 @@ static int ehci_run_fix(struct usb_hcd *hcd)
#endif
unsigned burst_size;
int retval;
+ unsigned usb_cmd;
#ifdef CONFIG_LSI_USB_SW_WORKAROUND
/* Fix HW errata 0003256: Do not enable USBCMD.RS for some time after
@@ -160,7 +161,6 @@ static int ehci_run_fix(struct usb_hcd *hcd)
ehci_writel(ehci, burst_size, &ehci->regs->reserved[1]);
#else
-#if 1
/* Fix for HW errata 9000373951: You can adjust the burst size and fill the
* level to minimize under-run possibilities. In the failing case, the
* transfer size was 96 bytes, the burst size was 16, and the fill
@@ -174,11 +174,19 @@ static int ehci_run_fix(struct usb_hcd *hcd)
burst_size = (burst_size & 0xffff00ff) | 0x4000; /* TXPBURST */
ehci_writel(ehci, burst_size, &ehci->regs->reserved[1]);
+ /* Set the SBUSCFG[2:0] to 3 (AHBBRST3) */
+ writel(0x3, (void __iomem *)USB_SBUSCFG);
+
retval = ehci_run(hcd);
+
+ /* Performance tweaking */
+ /* Clear ITC field 23:16 to zero */
+ usb_cmd = inl(USB_USBCMD) & 0xFF00FFFF;
+ writel(usb_cmd, (void __iomem *)USB_USBCMD);
+
if (retval)
return retval;
#endif
-#endif
return 0;
}
@@ -331,7 +339,7 @@ MODULE_ALIAS("platform:ci13612-ehci");
static struct of_device_id ci13612_match[] = {
{
.type = "usb",
- .compatible = "acp-usb",
+ .compatible = "lsi,acp-usb",
},
{},
};
--
1.8.3.4
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