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rockchip: uboot: add small delay to dwc2 usb driver that fixes occasional hangup during bootstrap from USB

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This commit is contained in:
Paolo Sabatino 2021-03-16 17:20:54 +00:00
parent 06a864a39c
commit 02085da1a9
1 changed files with 13 additions and 0 deletions
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13
patch/u-boot/u-boot-rockchip/zzz-usb-otg-fix.patch Normal file
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@ -0,0 +1,13 @@
diff --git a/drivers/usb/host/dwc2.c b/drivers/usb/host/dwc2.c
index cefe9d83..f7288203 100644
--- a/drivers/usb/host/dwc2.c
+++ b/drivers/usb/host/dwc2.c
@@ -440,6 +440,8 @@ static void dwc_otg_core_init(struct dwc2_priv *priv)
writel(usbcfg, &regs->gusbcfg);
+ mdelay(10);
+
/* Program the GAHBCFG Register. */
switch (readl(&regs->ghwcfg2) & DWC2_HWCFG2_ARCHITECTURE_MASK) {
case DWC2_HWCFG2_ARCHITECTURE_SLAVE_ONLY: