Some devices, like the SanDisk Cruzer Pop need some time to process the Set Configuration request, so wait a little until they are ready.
Signed-off-by: Marek Vasut marex@denx.de Cc: Chin Liang See clsee@altera.com Cc: Dinh Nguyen dinguyen@opensource.altera.com Cc: Hans de Goede hdegoede@redhat.com Cc: Stefan Roese sr@denx.de Cc: Stephen Warren swarren@nvidia.com --- common/usb.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/common/usb.c b/common/usb.c index 63429d4..205041b 100644 --- a/common/usb.c +++ b/common/usb.c @@ -1107,6 +1107,14 @@ int usb_select_config(struct usb_device *dev) "len %d, status %lX\n", dev->act_len, dev->status); return err; } + + /* + * Wait until the Set Configuration request gets processed by the + * device. This is required by at least SanDisk Cruzer Pop USB 2.0 + * and Kingston DT Ultimate 32GB USB 3.0 on DWC2 OTG controller. + */ + mdelay(10); + debug("new device strings: Mfr=%d, Product=%d, SerialNumber=%d\n", dev->descriptor.iManufacturer, dev->descriptor.iProduct, dev->descriptor.iSerialNumber);