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authorPatrick Delaunay <patrick.delaunay@st.com>2019-03-29 15:42:16 +0100
committerMarek Vasut <marex@denx.de>2019-04-21 10:26:52 +0200
commitc2c74f97afff9351077f2236ab6fa5638de9bd86 (patch)
tree39610aaf82b646de4bd4d36068f0e8c6b4ef23c1 /drivers/usb/gadget
parentc791c8431c34da803fdac4a308999879a6a33834 (diff)
usb: dwc2: force reset assert before to probe the driver
Reset the hardware to be sure of the device state. Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com> Reviewed-by: Lukasz Majewski <lukma@denx.de>
Diffstat (limited to 'drivers/usb/gadget')
-rw-r--r--drivers/usb/gadget/dwc2_udc_otg.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/usb/gadget/dwc2_udc_otg.c b/drivers/usb/gadget/dwc2_udc_otg.c
index af16fc1ed4..8169fdbb11 100644
--- a/drivers/usb/gadget/dwc2_udc_otg.c
+++ b/drivers/usb/gadget/dwc2_udc_otg.c
@@ -1049,7 +1049,12 @@ static int dwc2_udc_otg_reset_init(struct udevice *dev,
if (ret)
return ret;
- ret = reset_deassert_bulk(resets);
+ ret = reset_assert_bulk(resets);
+
+ if (!ret) {
+ udelay(2);
+ ret = reset_deassert_bulk(resets);
+ }
if (ret) {
reset_release_bulk(resets);
return ret;