[U-Boot] [U-Boot, v2, 4/4] arm: am33xx: Add support for mulitiple PLL input frequencies

[Lokesh Vutla <lokeshvutla@ti.com>]

On Thursday 08 June 2017 12:20 AM, Emmanuel Vadot wrote:
> On Fri, 12 May 2017 13:20:50 -0400
> Tom Rini <trini@konsulko.com> wrote:
> 
>> On Fri, May 05, 2017 at 12:59:10PM +0530, Lokesh Vutla wrote:
>>
>>> am335x supports various sysclk frequencies which can be determined
>>> using sysboot pins. PLLs should be configures based on this
>>> sysclk frequency. Add PLL configurations for all supported
>>> frequencies.
>>>
>>> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
>>> Reviewed-by: Tom Rini <trini@konsulko.com>
>>
>> Applied to u-boot/master, thanks!
>>
>> -- 
>> Tom
> 
>  Hello,
> 
>  This appears to break beaglebone black support, reverting this commit
> make u-boot works again.

hmm..I see the problem. Here we are hard coding MPU freq to 1GHz even
efuse say it is not supported(I am not sure why this is being done, may
be Tom can give more details). Even in kernel I see that cpufreq is
reading efuse to determine mpu frequency. Now that we have jitter
optimized pll configurations, looks like unsupported freq is causing an
issue. Can you see if the below patch helps?

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