From: Troy Kisky <troy.kisky@boundarydevices.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH v2 1/2] imx: mx6: add get_cpu_speed_grade_hz func to return MHz speed grade from OTP
Date: Fri, 15 May 2015 13:43:32 -0700 [thread overview]
Message-ID: <55565A74.3080809@boundarydevices.com> (raw)
In-Reply-To: <CAJ+vNU0qVMkd8Kaqq6AY+Haqg-k7QzHePbhVTs8DxrbpyxEWNw@mail.gmail.com>
On 5/15/2015 1:38 PM, Tim Harvey wrote:
> On Fri, May 15, 2015 at 12:54 PM, Troy Kisky
> <troy.kisky@boundarydevices.com> wrote:
>> 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
>
> Troy,
>
> As far as the frequency grade goes if you know the actual part number
> is a 1GHz part then that looks good - thanks for the test!
Right, it is a 1GHz part.
>
> Could you provide similar results for the thermal grade patch series
> as well? (you will need to enable imx6 thermal sensor and remove the
> if (!imx6sx) around the print).
Will do.
>
> Thanks!
>
> Tim
>
next prev parent reply other threads:[~2015-05-15 20:43 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-14 5:08 [U-Boot] [PATCH v2 0/2]: imx: mx6: use OTP for freq grade Tim Harvey
2015-05-14 5:08 ` [U-Boot] [PATCH v2 1/2] imx: mx6: add get_cpu_speed_grade_hz func to return MHz speed grade from OTP Tim Harvey
2015-05-15 7:53 ` Christian Gmeiner
2015-05-15 13:20 ` Stefano Babic
2015-05-15 14:26 ` Christian Gmeiner
2015-05-15 14:32 ` Stefano Babic
2015-05-15 19:54 ` Troy Kisky
2015-05-15 20:38 ` Tim Harvey
2015-05-15 20:43 ` Troy Kisky [this message]
2015-05-15 22:34 ` Troy Kisky
2015-05-15 22:57 ` Otavio Salvador
2015-05-15 23:24 ` Troy Kisky
2015-05-15 13:42 ` Tim Harvey
2015-05-17 21:37 ` Nikolay Dimitrov
2015-05-14 5:08 ` [U-Boot] [PATCH v2 2/2] mx: mx6: display max cpu frequency in print_cpuinfo() Tim Harvey
2015-05-17 21:38 ` Nikolay Dimitrov
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