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...@gmail.com>
Reviewed-by: Simon Glass <s...@chromium.org>
Reviewed-by: Stefan Roese <s...@denx.de>
Tested-by: Stefan Roese <s...@denx.de>
---
Changes in v4: None
Changes in v3: None
Changes in v2:
- Change to use uint and also 'normal' variable name packet_size.
cmd/usb.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/cmd/usb.c b/cmd/usb.c
index 4fa456e..992d414 100644
--- a/cmd/usb.c
+++ b/cmd/usb.c
@@ -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,
--
2.9.2
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