diff options
| author | Bin Meng <bmeng.cn@gmail.com> | 2017-07-19 21:50:07 +0800 |
|---|---|---|
| committer | Marek Vasut <marex@denx.de> | 2017-07-28 23:34:25 +0200 |
| commit | 78abf14fc2ff577d0385f36fe91769d458fbc4a5 (patch) | |
| tree | 57cf2ee6e9c96299958b628741889ece37622b3b | |
| parent | cbb89ed026e761b58a2568fea7b98135abcefe21 (diff) | |
usb: cmd: Print actual packet size for super speed devices
USB 3.0 defines bMaxPacketSize0 field in the device descriptor as
the exponent of 2, so let's print the calculated actual size.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Tested-by: Stefan Roese <sr@denx.de>
| -rw-r--r-- | cmd/usb.c | 7 |
1 files changed, 5 insertions, 2 deletions
@@ -150,6 +150,8 @@ static void usb_display_string(struct usb_device *dev, int index) static void usb_display_desc(struct usb_device *dev) { + uint packet_size = dev->descriptor.bMaxPacketSize0; + if (dev->descriptor.bDescriptorType == USB_DT_DEVICE) { printf("%d: %s, USB Revision %x.%x\n", dev->devnum, usb_get_class_desc(dev->config.if_desc[0].desc.bInterfaceClass), @@ -171,9 +173,10 @@ static void usb_display_desc(struct usb_device *dev) usb_get_class_desc( dev->config.if_desc[0].desc.bInterfaceClass)); } + if (dev->descriptor.bcdUSB >= cpu_to_le16(0x0300)) + packet_size = 1 << packet_size; printf(" - PacketSize: %d Configurations: %d\n", - dev->descriptor.bMaxPacketSize0, - dev->descriptor.bNumConfigurations); + packet_size, dev->descriptor.bNumConfigurations); printf(" - Vendor: 0x%04x Product 0x%04x Version %d.%d\n", dev->descriptor.idVendor, dev->descriptor.idProduct, (dev->descriptor.bcdDevice>>8) & 0xff, |