[U-Boot] [PATCH v2 1/2] imx: mx6: add get_cpu_speed_grade_hz func to return MHz speed grade from OTP

Troy Kisky
2015-05-15T19:54:07Z

On 5/15/2015 7:32 AM, Stefano Babic wrote:
> Hi Christian,
>
> On 15/05/2015 16:26, Christian Gmeiner wrote:
>
>>> Function does not returns the value of the fuse, else it should returns
>>> val. The value is parsed for consistency, and if it is not, 0 means a
>>> failure. IMHO this interpretation is correct - I would agree with you
>>> only if the return value would be the read value, but it is not.
>>>
>>
>> If all mx6 variants use the same otp register/values, then the
>> ifs are _NOT_ needed. I hope that later testings/doc updates/etc
>> proofs it and we can get rid of the superfluous ifs.
>>
>
> Ok - let's see if this can be proofed. It looks like we have to test and
> ask the hardware for that instead of relying on the documentation.
>
> Best regards,
> Stefano Babic
>

On our imx6sx board the patch outputs

U-Boot 2015.04-00074-g1bd6819 (May 15 2015 - 12:44:22)

CPU: Freescale i.MX6SX rev1.0 996 MHz (running at 792 MHz)
Reset cause: WDOG
Board: Nitrogen6sx
______________

Did you want me to test some variation of this?

Thanks
Troy