Re: [PATCH] clk: tegra: fix pllu rate configuration

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On February 23, 2018 12:47:56 AM GMT+01:00, Stephen Warren <swarren@xxxxxxxxxxxxx> wrote:
>On 02/22/2018 04:04 PM, Marcel Ziswiler wrote:
>> Turns out latest upstream U-Boot does not configure/enable pllu which
>> leaves it at some default rate of 500 kHz:
>
>I assume this is only because U-Boot just happened not to access any
>USB 
>devices. In other words, if you break into the U-Boot boot flow and 
>explicitly initialize/access USB, then USB works both in U-Boot and in 
>the kernel even without this patch?

Exactly.

> If that's not the case, it seems 
>there's a bug in U-Boot.
>
>Either way, I have no issue with this patch. I just want to make sure 
>there weren't other bugs in U-Boot that needed fixing.

No, rest assured U-Boot is working just fine on the legacy Tegras. The only thing in need of fixing lately was NAND on Colibri T20 and Harmony.
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