Messages in this thread Patch in this message | | | Date | Thu, 15 Apr 2021 09:39:35 +0400 | From | Artur Petrosyan <> | Subject | [PATCH 02/15] usb: dwc2: Reset DEVADDR after exiting gadget hibernation. |
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Initially resetting device address was done in dwc2_hsotg_irq() interrupt handler. However, when core is hibernated USB RESET is not handled in dwc2_hsotg_irq() handler, instead USB RESET interrupt is handled in dwc2_handle_gpwrdn_intr() handler.
- Added reset device address to zero when core exits from gadget hibernation.
Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com> Signed-off-by: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com> Acked-by: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com> --- drivers/usb/dwc2/gadget.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index 2f50f3e62caa..e6bb1bdb2760 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -5305,6 +5305,10 @@ int dwc2_gadget_exit_hibernation(struct dwc2_hsotg *hsotg, dwc2_writel(hsotg, dr->dcfg, DCFG); dwc2_writel(hsotg, dr->dctl, DCTL); + /* On USB Reset, reset device address to zero */ + if (reset) + dwc2_clear_bit(hsotg, DCFG, DCFG_DEVADDR_MASK); + /* De-assert Wakeup Logic */ gpwrdn = dwc2_readl(hsotg, GPWRDN); gpwrdn &= ~GPWRDN_PMUACTV; -- 2.25.1
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