en; Eddie Cai; Lin Huang; wulf; 杨凯; Tao
> Huang; walkr...@126.com; Douglas Anderson; Greg Kroah-Hartman; linux-
> u...@vger.kernel.org; LKML
> Subject: Re: [RFC PATCH v1] usb: dwc2: reduce dwc2 driver probe time
>
> On 2/11/2015 3:42 AM, Roy wrote:
> > Hi John Youn:
On 2/11/2015 3:42 AM, Roy wrote:
> Hi John Youn:
>
> Could you please give some suggestions from your point of view,
> about this probe time issue ?
>
> Thanks a lot.
>
> at 2015/2/11 2:23, Julius Werner wrote:
>>> @@ -2703,7 +2703,7 @@ int dwc2_get_hwparams(struct dwc2_hsotg *hsotg)
Hi John Youn:
Could you please give some suggestions from your point of view,
about this probe time issue ?
Thanks a lot.
at 2015/2/11 2:23, Julius Werner wrote:
@@ -2703,7 +2703,7 @@ int dwc2_get_hwparams(struct dwc2_hsotg *hsotg)
gusbcfg = readl(hsotg->regs + GUSBCFG);
> @@ -2703,7 +2703,7 @@ int dwc2_get_hwparams(struct dwc2_hsotg *hsotg)
> gusbcfg = readl(hsotg->regs + GUSBCFG);
> gusbcfg &= ~GUSBCFG_FORCEHOSTMODE;
> writel(gusbcfg, hsotg->regs + GUSBCFG);
> - usleep_range(10, 15);
> + usleep_range(25000, 5);
The
Hi,
On Tue, Feb 10, 2015 at 10:05:39PM +0800, Yunzhi Li wrote:
> I found that the probe function of dwc2 driver takes much time
> when kernel boot up. There are many long delays in the probe
> function these take almost 1 second.
>
> This patch trying to reduce unnecessary delay time.
>
> In dwc
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