From: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Date: Fri, 16 Mar 2018 22:34:13 +0000 (-0700)
Subject: usb: dwc3: gadget: Check IP revision for GRXTHRCFG
X-Git-Tag: v5.15~9124^2~18^2~8
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=01b0e2cc7d89b6aa4084993634b3ea673caff4e8;p=platform%2Fkernel%2Flinux-starfive.git

usb: dwc3: gadget: Check IP revision for GRXTHRCFG

DWC_usb31 controller has a different UsbRxPktCnt bit fields from
GRXTHRCFG register. Check for DWC_usb31 IP revision to read the
appropriate value.

Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
---

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 1431a88..19cf9c0 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -1858,7 +1858,11 @@ static int __dwc3_gadget_start(struct dwc3 *dwc)
 	 * bursts of data without going through any sort of endpoint throttling.
 	 */
 	reg = dwc3_readl(dwc->regs, DWC3_GRXTHRCFG);
-	reg &= ~DWC3_GRXTHRCFG_PKTCNTSEL;
+	if (dwc3_is_usb31(dwc))
+		reg &= ~DWC31_GRXTHRCFG_PKTCNTSEL;
+	else
+		reg &= ~DWC3_GRXTHRCFG_PKTCNTSEL;
+
 	dwc3_writel(dwc->regs, DWC3_GRXTHRCFG, reg);
 
 	dwc3_gadget_setup_nump(dwc);