Commit a07ce8d3 authored Oct 14, 2016 by Heiko Stuebner Committed by Felipe Balbi Oct 17, 2016

usb: dwc2: Add msleep for host-only



Although a host-only controller should not have any associated delay,
some rockchip SOC platforms will not show the correct host-values of
registers until after a delay.

So add a 50 ms sleep when in host-only mode.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

parent d889c23c

drivers/usb/dwc2/core.c

+10 −1

Original line number	Diff line number	Diff line
		@@ -463,9 +463,18 @@ static void dwc2_clear_force_mode(struct dwc2_hsotg *hsotg)
		*/
		void dwc2_force_dr_mode(struct dwc2_hsotg *hsotg)
		{
		bool ret;

		switch (hsotg->dr_mode) {
		case USB_DR_MODE_HOST:
		dwc2_force_mode(hsotg, true);
		ret = dwc2_force_mode(hsotg, true);
		/*
		* NOTE: This is required for some rockchip soc based
		* platforms on their host-only dwc2.
		*/
		if (!ret)
		msleep(50);

		break;
		case USB_DR_MODE_PERIPHERAL:
		dwc2_force_mode(hsotg, false);