Felipe Balbi wrote:
> On Fri, Feb 20, 2009 at 11:15:36AM -0700, Gary Thomas wrote:
>> I have a 3530 board (similar to the OMAP3EVM) and I'm trying
>> to get the USB host working. Sadly, this is failing, but I
>> don't quite see why. From drivers/usb/host/echi-omap.c:
>> /* Wait for TLL to be Active */
>> timeout = 1000;
>> while ((cm_read_mod_reg(CORE_MOD, OMAP2430_CM_IDLEST3)
>> & (1 << OMAP3430ES2_ST_USBTLL_SHIFT)))
>> {
>> if (--timeout <= 0) {
>> printk(KERN_ERR "USB TLL is unavailable\n");
>> return -ENODEV;
>> }
>> cpu_relax();
>> }
>>
>> Any clues on why this might be? How do I solve it?
>
> could you enable CONFIG_DEBUG_LL and post the seria console output ?
>
> do you really use TLL ?? I don't really know omap3evm, but I guess it
> uses PHY mode (correct me if I'm wrong).
>
It's not that I _need_ TLL, the driver function omap_start_ehci()
tries to reset the part of the USB controller and fails. I'm just
trying to understand why this part of the code falls over.
--
------------------------------------------------------------
Gary Thomas | Consulting for the
MLB Associates | Embedded world
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