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usb: dwc3: gadget: fix GCTL programming

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ensure a few bits are cleared before enabling
what we need.

Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Felipe Balbi 2011-09-08 17:42:11 +03:00
parent f78d32e79e
commit 771f184ece
1 changed files with 3 additions and 6 deletions
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9
drivers/usb/dwc3/gadget.c
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@ -1150,13 +1150,10 @@ static int dwc3_gadget_start(struct usb_gadget *g,
reg = dwc3_readl(dwc->regs, DWC3_GCTL);
/*
* REVISIT: power down scale might be different
* depending on PHY used, need to pass that via platform_data
*/
reg |= DWC3_GCTL_PWRDNSCALE(0x61a)
| DWC3_GCTL_PRTCAPDIR(DWC3_GCTL_PRTCAP_DEVICE);
reg &= ~DWC3_GCTL_SCALEDOWN(3);
reg &= ~DWC3_GCTL_PRTCAPDIR(DWC3_GCTL_PRTCAP_OTG);
reg &= ~DWC3_GCTL_DISSCRAMBLE;
reg |= DWC3_GCTL_PRTCAPDIR(DWC3_GCTL_PRTCAP_DEVICE);
/*
* WORKAROUND: DWC3 revisions <1.90a have a bug