[OpenWrt-Devel] [RFC] ramips: awake rt305x USB controller

[John Crispin]

Hi,

looks good please send a patch that adds this under
target/linux/ramips/patches-4.4

	John

On 09/04/2016 15:46, Сергей Василюгин wrote:
> Long story of rt305x USB controller feature [1] arise again in trunk [2].
> I make quick fix but not sure that it's correct.
> Possiblely it's time to reanimate device_reset() patch?
> 
> Signed-Off-By: Serge Vasilugin <vasilugin at yandex.ru>
> 
> [1] http://marc.info/?l=linux-usb&m=137398626102108&w=2
> [2] https://dev.openwrt.org/ticket/21396
> [3] https://dev.openwrt.org/changeset/42445
> 
> --- a/drivers/usb/dwc2/platform.c
> +++ b/drivers/usb/dwc2/platform.c
> @@ -375,6 +375,12 @@ static int dwc2_driver_probe(struct plat
>  	dev_dbg(&dev->dev, "mapped PA %08lx to VA %p\n",
>  		(unsigned long)res->start, hsotg->regs);
>  
> +	/* Enable USB port before any regs access */
> +	if(dwc2_readl(hsotg->regs + PCGCTL) & 0x0f) {
> +		dwc2_writel(0x00, hsotg->regs + PCGCTL);
> +		/* TODO: mdelay(25) here? vendor driver don't use it */
> +	}
> +
>  	hsotg->dr_mode = usb_get_dr_mode(&dev->dev);
>  	if (IS_ENABLED(CONFIG_USB_DWC2_HOST) &&
>  			hsotg->dr_mode != USB_DR_MODE_HOST) {
> 
> 
> ---
> serge
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