Felipe Balbi wrote:
> On Fri, Feb 20, 2009 at 11:50:44AM -0700, Gary Thomas wrote:
>> 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.
>
> you have OMAP_EHCI_TLL_MODE set, you should probably use
> OMAP_EHCI_PHY_MODE instead.
>
> You can fix it via "make menuconfig"
>
I already have that; this code is still being used.
# CONFIG_OMAP_EHCI_TLL_MODE is not set
CONFIG_OMAP_EHCI_PHY_MODE=y
This is not used in the function above at all.
--
------------------------------------------------------------
Gary Thomas | Consulting for the
MLB Associates | Embedded world
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