[PATCH 01/14] usb: dwc2: Fix dwc2_restore_device_registers() function.

[Artur Petrosyan]

- Added backup of DCFG register.
- Added Set the Power-On Programming done bit.

Signed-off-by: Artur Petrosyan <art...@synopsys.com>
---
 drivers/usb/dwc2/gadget.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c
index 6812a8a3a98b..dcb0fbb8bc42 100644
--- a/drivers/usb/dwc2/gadget.c
+++ b/drivers/usb/dwc2/gadget.c
@@ -5004,6 +5004,7 @@ int dwc2_restore_device_registers(struct dwc2_hsotg 
*hsotg, int remote_wakeup)
 {
        struct dwc2_dregs_backup *dr;
        int i;
+       u32 dctl;
 
        dev_dbg(hsotg->dev, "%s\n", __func__);
 
@@ -5019,6 +5020,15 @@ int dwc2_restore_device_registers(struct dwc2_hsotg 
*hsotg, int remote_wakeup)
        if (!remote_wakeup)
                dwc2_writel(hsotg, dr->dctl, DCTL);
 
+       if (hsotg->params.power_down == DWC2_POWER_DOWN_PARAM_PARTIAL) {
+               dwc2_writel(hsotg, dr->dcfg, DCFG);
+
+               /* Set the Power-On Programming done bit */
+               dctl = dwc2_readl(hsotg, DCTL);
+               dctl |= DCTL_PWRONPRGDONE;
+               dwc2_writel(hsotg, dctl, DCTL);
+       }
+
        dwc2_writel(hsotg, dr->daintmsk, DAINTMSK);
        dwc2_writel(hsotg, dr->diepmsk, DIEPMSK);
        dwc2_writel(hsotg, dr->doepmsk, DOEPMSK);
-- 
2.11.0