From: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
To: Felipe Balbi <balbi@kernel.org>,
Thinh Nguyen <Thinh.Nguyen@synopsys.com>,
linux-usb@vger.kernel.org
Cc: John Youn <John.Youn@synopsys.com>
Subject: [v4,06/15] usb: dwc3: gadget: Check IP revision for GRXTHRCFG
Date: Wed, 31 Jan 2018 13:16:25 -0800 [thread overview]
Message-ID: <5cc4ad1f172227ce1601bdde1eea218883ca3090.1517428812.git.thinhn@synopsys.com> (raw)
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>
---
drivers/usb/dwc3/gadget.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 0bbc21ab6912..24cbd79481e8 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);
reply other threads:[~2018-01-31 21:16 UTC|newest]
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