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Date: Thu, 22 Sep 2016 09:39:17 +0800 From: Pengcheng Li <lpc.li@...ilicon.com> To: <johnyoun@...opsys.com> CC: <gregkh@...uxfoundation.org>, <linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>, <xuejiancheng@...ilicon.com>, <lidongpo@...ilicon.com>, <caizhiyong@...ilicon.com>, Pengcheng Li <lpc.li@...ilicon.com> Subject: [PATCH] usb: dwc2: add USBTrdTim to initial value After dwc2_core_reset,register is to the initial value, and the USBTrdTim vale is 0x5. If hsotg->phyif = GUSBCFG_PHYIF8, after the dwc2_writel,the value is 0xd.So we need to set the USBTrdTim to 0. Signed-off-by: Pengcheng Li <lpc.li@...ilicon.com> --- drivers/usb/dwc2/gadget.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index af46adf..9e52e4f 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -2531,7 +2531,7 @@ void dwc2_hsotg_core_init_disconnected(struct dwc2_hsotg *hsotg, /* keep other bits untouched (so e.g. forced modes are not lost) */ usbcfg = dwc2_readl(hsotg->regs + GUSBCFG); usbcfg &= ~(GUSBCFG_TOUTCAL_MASK | GUSBCFG_PHYIF16 | GUSBCFG_SRPCAP | - GUSBCFG_HNPCAP); + GUSBCFG_HNPCAP | GUSBCFG_USBTRDTIM_MASK); /* set the PLL on, remove the HNP/SRP and set the PHY */ val = (hsotg->phyif == GUSBCFG_PHYIF8) ? 9 : 5; @@ -3413,7 +3413,7 @@ static void dwc2_hsotg_init(struct dwc2_hsotg *hsotg) /* keep other bits untouched (so e.g. forced modes are not lost) */ usbcfg = dwc2_readl(hsotg->regs + GUSBCFG); usbcfg &= ~(GUSBCFG_TOUTCAL_MASK | GUSBCFG_PHYIF16 | GUSBCFG_SRPCAP | - GUSBCFG_HNPCAP); + GUSBCFG_HNPCAP | GUSBCFG_USBTRDTIM_MASK); /* set the PLL on, remove the HNP/SRP and set the PHY */ trdtim = (hsotg->phyif == GUSBCFG_PHYIF8) ? 9 : 5; -- 2.9.3
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