From: Pratyush Anand Date: Thu, 21 Jun 2012 12:14:28 +0000 (+0530) Subject: USB: DWC3: Put 100 ms delay for phy to be stable X-Git-Tag: firefly_0821_release~3680^2~2357^2~24^2~34^2~11 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=45627ac6a4f063d19b0bd9863d20ac1dabda99a7;p=firefly-linux-kernel-4.4.55.git USB: DWC3: Put 100 ms delay for phy to be stable Before taking core out of reset phy must be stable. So wait for 100ms after clear phy reset. Signed-off-by: Pratyush Anand Signed-off-by: Felipe Balbi --- diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 49c060205c9a..ac151e9acf20 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -148,6 +148,8 @@ static void dwc3_core_soft_reset(struct dwc3 *dwc) reg &= ~DWC3_GUSB2PHYCFG_PHYSOFTRST; dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg); + mdelay(100); + /* After PHYs are stable we can take Core out of reset state */ reg = dwc3_readl(dwc->regs, DWC3_GCTL); reg &= ~DWC3_GCTL_CORESOFTRESET;