linux-kernel - Re: [PATCH v2 5/7] clk: tegra: don't warn for PLL defaults unnecessarily

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Date:   Fri, 24 Mar 2017 09:27:50 +0000
From:   Jon Hunter <jonathanh@...dia.com>
To:     Peter De Schrijver <pdeschrijver@...dia.com>
CC:     Prashant Gaikwad <pgaikwad@...dia.com>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...eaurora.org>,
        "Stephen Warren" <swarren@...dotorg.org>,
        Thierry Reding <thierry.reding@...il.com>,
        Alexandre Courbot <gnurou@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        "Mark Rutland" <mark.rutland@....com>,
        Rhyland Klein <rklein@...dia.com>, <linux-clk@...r.kernel.org>,
        <linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>
Subject: Re: [PATCH v2 5/7] clk: tegra: don't warn for PLL defaults
 unnecessarily


On 24/03/17 09:25, Peter De Schrijver wrote:
> On Thu, Mar 23, 2017 at 02:37:23PM +0000, Jon Hunter wrote:
>> Hi Peter,
>>
>> On 23/02/17 10:44, Peter De Schrijver wrote:
>>> If the PLL is on, only warn if the defaults are not yet set. Otherwise be
>>> silent.
>>>
>>> Signed-off-by: Peter De Schrijver <pdeschrijver@...dia.com>
>>
>> This patch is breaking boot for Tegra210 Smaug on -next [0]. Reverting
>> this on top of -next allows the board to boot again. I have not had
>> chance to dig into this any further yet, but can unless you have some
>> thoughts.
> 
> My guess would be pllm. Maybe the bootloader on Smaug switches to pllm for
> a higher emc frequency? On jetson cboot doesn't do that, so at least that
> could be a difference.

Thanks. I will take a closer look at what is going on either today or
Monday and let you know what I find.

Cheers
Jon

-- 
nvpublic