diff options
| author | Hector Martin | 2023-10-29 16:09:09 +0900 |
|---|---|---|
| committer | Marek Vasut | 2023-12-01 14:06:12 +0100 |
| commit | b5999f8f6ca89223b70ec3038fcfe9dbb6c67475 (patch) | |
| tree | 9ca23e0443c4eecaa2bb968da442aabebe1ff1ec /common | |
| parent | a14843fdac24bf18bd58152b959ca0425adaa1e4 (diff) | |
usb: hub: Add missing reset recovery delay
Some devices like YubiKeys need more time before SET_ADDRESS. The spec
says we need to wait 10ms.
Signed-off-by: Hector Martin <marcan@marcan.st>
Reviewed-by: Marek Vasut <marex@denx.de>
Diffstat (limited to 'common')
| -rw-r--r-- | common/usb_hub.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/common/usb_hub.c b/common/usb_hub.c index 85c0822d8b7..70279f301d5 100644 --- a/common/usb_hub.c +++ b/common/usb_hub.c @@ -395,6 +395,13 @@ int usb_hub_port_connect_change(struct usb_device *dev, int port) break; } + /* + * USB 2.0 7.1.7.5: devices must be able to accept a SetAddress() + * request (refer to Section 11.24.2 and Section 9.4 respectively) + * after the reset recovery time 10 ms + */ + mdelay(10); + #if CONFIG_IS_ENABLED(DM_USB) struct udevice *child; |