mirror/u-boot-2016
1
0
Fork 0
mirror of https://git.codelinaro.org/clo/qsdk/oss/boot/u-boot-2016.git synced 2026-02-10 22:02:56 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions

ipq807x: Add delay for Get descriptor

Browse source 
REQUEST SUMMARY
Setup Data 8006000200000900 Direction Device-to-host
Type Standard Recipient Device
bRequest GET_DESCRIPTOR wValue CONFIGURATION, Index 0
wIndex 0x0000 wLength 0x0009

DECODING INFORMATION

  Field Length(bits) Offset(bits) Decoded HexValue Description
  bRequest     8     8     GET_DESCRIPTOR     0x06     bRequest HexVal: 0x06
  wValue     16     16     CONFIGURATION type, Index 0     0x0200     Type of Descriptor
  wIndex     16     32     0x0000     0x0000     index info

DEVICE_QUALIFIER
  Descriptor(128 bytes) Field  Length(bits) Offset(bits)   Decoded HexValue Description
  bLength     8     0      0x80      0x80     Descriptor size is 128 bytes
  bDescriptorType     8     8      0x06      0x06     DEVICE_QUALIFIER Descriptor Type
  bcdUSB     16     16      0x0200      0x0200     USB Specification version 2.00
  bDeviceClass     8     32      0x00      0x00     Each interface specifies its own class information
  bDeviceSubClass     8     40      0x00      0x00     Each interface specifies its own Subclass information
  bDeviceProtocol     8     48      0x09      0x09     Protocol code = 9
  bMaxPacketSize0     8     56      0x00      0x00     The Maximum packet size 0 for endpoint zero is invalid! (Only 8,16,32,or 64 are valid)
  bNumConfigurations     8     64      0x09      0x09     The device has 9 possible other-speed configurations

The Transcend device fails for get configuration descriptor length.
Adding a delay fixes the issue.

Change-Id: Ic337e94e6342163e57e652781544709d0c32edcc
Signed-off-by: Sham Muthayyan <smuthayy@codeaurora.org>
This commit is contained in:
Sham Muthayyan 2019-08-08 17:01:13 +05:30 • committed by Gerrit - the friendly Code Review server
parent 466666e8d3
commit 2b2f744a8d
1 changed files with 15 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

15
common/usb.c
View file

@ -43,6 +43,9 @@
#define USB_BUFSIZ 512
#define TRANSCEND_USB_VENDOR_ID 0x8564
#define TRANSCEND_USB_PRODUCT_ID 0x1000
static int asynch_allowed;
char usb_started; /* flag for the started/stopped USB status */
@ -1088,8 +1091,20 @@ int usb_select_config(struct usb_device *dev)
le16_to_cpus(&dev->descriptor.idProduct);
le16_to_cpus(&dev->descriptor.bcdDevice);
/*The Transcend device fails for get configuration length. Adding
delay about 10 micro secs to fix this.*/
if (dev->descriptor.idVendor == TRANSCEND_USB_VENDOR_ID &&
dev->descriptor.idProduct == TRANSCEND_USB_PRODUCT_ID)
udelay(10);
/* only support for one config for now */
err = usb_get_configuration_len(dev, 0);
/*The Transcend device fails for get configuration number. Adding
delay about 10 micro secs to fix this.*/
if (dev->descriptor.idVendor == TRANSCEND_USB_VENDOR_ID &&
dev->descriptor.idProduct == TRANSCEND_USB_PRODUCT_ID)
udelay(10);
if (err >= 0) {
tmpbuf = (unsigned char *)malloc_cache_aligned(err);
if (!tmpbuf)