diff options
Diffstat (limited to 'target/linux/lantiq/patches-4.19/0003-usb-dwc2-use-a-longer-core-rest-timeout-in-dwc2_core.patch')
| -rw-r--r-- | target/linux/lantiq/patches-4.19/0003-usb-dwc2-use-a-longer-core-rest-timeout-in-dwc2_core.patch | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/target/linux/lantiq/patches-4.19/0003-usb-dwc2-use-a-longer-core-rest-timeout-in-dwc2_core.patch b/target/linux/lantiq/patches-4.19/0003-usb-dwc2-use-a-longer-core-rest-timeout-in-dwc2_core.patch new file mode 100644 index 0000000000..dde7b3f23b --- /dev/null +++ b/target/linux/lantiq/patches-4.19/0003-usb-dwc2-use-a-longer-core-rest-timeout-in-dwc2_core.patch @@ -0,0 +1,29 @@ +From 09bbf8c732e7a6ce290fc7c2d5a3e79ec6c3e8d2 Mon Sep 17 00:00:00 2001 +From: Mathias Kresin <dev@kresin.me> +Date: Wed, 3 Jul 2019 17:03:02 +0200 +Subject: [PATCH] usb: dwc2: use a longer core rest timeout in + dwc2_core_reset() + +Testing on different generations of Lantiq MIPS SoC based boards, showed +that it takes up to 1500 us until the core reset bit is cleared. + +The driver from the vendor SDK (ifxhcd) uses a 1 second timeout. Use the +same timeout to fix wrong hang detections and make the driver work for +Lantiq MIPS SoCs. + +Signed-off-by: Mathias Kresin <dev@kresin.me> +--- + drivers/usb/dwc2/core.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +--- a/drivers/usb/dwc2/core.c ++++ b/drivers/usb/dwc2/core.c +@@ -524,7 +524,7 @@ int dwc2_core_reset(struct dwc2_hsotg *h + greset |= GRSTCTL_CSFTRST; + dwc2_writel(hsotg, greset, GRSTCTL); + +- if (dwc2_hsotg_wait_bit_clear(hsotg, GRSTCTL, GRSTCTL_CSFTRST, 50)) { ++ if (dwc2_hsotg_wait_bit_clear(hsotg, GRSTCTL, GRSTCTL_CSFTRST, 10000)) { + dev_warn(hsotg->dev, "%s: HANG! Soft Reset timeout GRSTCTL GRSTCTL_CSFTRST\n", + __func__); + return -EBUSY; |