[U-Boot] [PATCH] don't touch non-existent EHCI regs on MPC837x.

Andre Schwarz andre.schwarz at matrix-vision.de
Mon Nov 15 17:21:37 CET 2010


Am 15.11.2010 17:16, schrieb Wolfgang Denk:
> Dear Andre Schwarz,
>
> In message<4CE1572C.6080804 at matrix-vision.de>  you wrote:
>>>>> This doesn't seem quite right, the MPC837x has USB controllers.
>>>>>
>>>> yes, it has - and it is working fine.
>>>> But USB register range 0x00-0xff is reserved and hangs the CPU.
>>>>
>>>> With this patch USB is working fine on at least MPC8377.
>>>>
>>> Then the commit message should make this clear.  At the moment it is
>>> pretty much misleading.
>>>
>> I didn't add this #ifdef but extended it to not only match 834x but also
>> 837x.
>>
>> All I see is that the ifdef'ed code accesses registers which are
>> explicitely reserved on MPC834x and at least MPC837x.
> Yes, I don't think this was objected at all.
>
>> What would be an appropriate commit message from your point of view ?
> Well, above you wrote "USB register range 0x00-0xff is reserved and
> hangs the CPU" - this probably explains the situation pretty well.
> However, the subject "non-existent EHCI regs" suggests to me that
> there are no USB registers at all.

understood - will wait for further comments and resubmit tomorrow.


Regards,
André

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