From: Robert Baldyga <r.baldyga@samsung.com>
Date: Mon, 23 Feb 2015 14:58:30 +0000 (+0100)
Subject: dwc3: core: fix SUSPHY problem
X-Git-Tag: submit/tizen/20150416.081342~33
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=87bbcd31e16586d5923ea96485a8cd59f2e918db;p=platform%2Fkernel%2Flinux-exynos.git

dwc3: core: fix SUSPHY problem

This is needed for OTG mode. Without this change endpoint enabling in
gadget mode fails after role switching.

Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
---

diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index 5c7a849b2e1c..a10583a23297 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -113,6 +113,14 @@ static int dwc3_core_soft_reset(struct dwc3 *dwc)
 	reg &= ~DWC3_GCTL_CORESOFTRESET;
 	dwc3_writel(dwc->regs, DWC3_GCTL, reg);
 
+	reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0));
+	reg &= ~DWC3_GUSB2PHYCFG_SUSPHY;
+	dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg);
+
+	reg = dwc3_readl(dwc->regs, DWC3_GUSB3PIPECTL(0));
+	reg &= ~DWC3_GUSB3PIPECTL_SUSPHY;
+	dwc3_writel(dwc->regs, DWC3_GUSB3PIPECTL(0), reg);
+
 	return 0;
 }