On 10/04/10 16:54, Sergei Shtylyov wrote:
> Hello.
>
> Eric BÃnard wrote:
>
>> without this patch, the initialization of the OTG port in host mode
>> fails with :
>> ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
>> mxc-ehci mxc-ehci.0: initializing i.MX USB Controller
>> ULPI transceiver vendor/product ID 0x0000/0x0000
>> ULPI ID does not match any known transceiver.
>> mxc-ehci mxc-ehci.0: unable to init transceiver, probably missing
>
>> Signed-off-by: Eric BÃnard <eric@xxxxxxxxxx>
>> ---
>> drivers/usb/otg/ulpi.c | 5 ++++-
>> 1 files changed, 4 insertions(+), 1 deletions(-)
>
> You should have CC'ed linux-usb@xxxxxxxxxxxxxxxx
>
>> diff --git a/drivers/usb/otg/ulpi.c b/drivers/usb/otg/ulpi.c
>> index ccc8195..e802e44 100644
>> --- a/drivers/usb/otg/ulpi.c
>> +++ b/drivers/usb/otg/ulpi.c
>> @@ -34,7 +34,10 @@
>> /* ULPI hardcoded IDs, used for probing */
>> static unsigned int ulpi_ids[] = {
>> ULPI_ID(0x04cc, 0x1504), /* NXP ISP1504 */
>> - ULPI_ID(0x0424, 0x0006), /* SMSC USB3319 */
>> + ULPI_ID(0x0424, 0x0006), /* SMSC USB3319 */
>> +#if (defined(CONFIG_ARCH_MX25) || defined(CONFIG_ARCH_MX35))
>> + ULPI_ID(0x0000, 0x0000), /* i.MX25 & i.MX35 internal PHY */
>> +#endif
>
> I don't know why this table is at all used in the first place. IMO, checking for the vendor/device ID serves no purpose...
Well, it was there in first place, when Daniel merged this.
May be it was taken from Sascha.
I think its purpose to check if there is a ulpi transceiver out there,
although, ulpi defines a special scratch register for testing purposes.
>
> WBR, Sergei
>
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--
Regards,
Igor.
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