linux-kernel - Re: [PATCH v3 1/3] clk: tegra: Mark HCLK, SCLK and EMC as critical

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Message-ID: <20180308144437.GJ3529@ulmo>
Date:   Thu, 8 Mar 2018 15:44:37 +0100
From:   Thierry Reding <thierry.reding@...il.com>
To:     Dmitry Osipenko <digetx@...il.com>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...eaurora.org>
Cc:     Peter De Schrijver <pdeschrijver@...dia.com>,
        Prashant Gaikwad <pgaikwad@...dia.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        linux-clk@...r.kernel.org, linux-tegra@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 1/3] clk: tegra: Mark HCLK, SCLK and EMC as critical

On Thu, Mar 01, 2018 at 04:33:29PM +0300, Dmitry Osipenko wrote:
> On 15.01.2018 13:56, Dmitry Osipenko wrote:
> > On 10.01.2018 16:59, Dmitry Osipenko wrote:
> >> Machine dies if HCLK, SCLK or EMC is disabled. Hence mark these clocks
> >> as critical.
> >>
> >> Signed-off-by: Dmitry Osipenko <digetx@...il.com>
> >> Acked-by: Peter De Schrijver <pdeschrijver@...dia.com>
> >> ---
> >>
> >> Change log:
> >> v2:     Fixed accidentally missed marking EMC as critical on Tegra30 and
> >>         Tegra124. Switched to a use of common EMC gate definition on Tegra20
> >>         and Tegra30.
> >>
> >> v3:     Dropped marking PLL_P outputs as critical, because seems they are
> >>         not so critical. Although, I still haven't got a definitive answer
> >>         about what exact HW functions are affected by the fixed-clocks.
> >>         Anyway it should be cleaner to correct the actual drivers.
> > 
> > Stephen / Michael, would it be possible to schedule these patches for 4.16? My
> > T20 and T30 devices aren't working without the 'critical clocks' patch. Things
> > happen to work with the opensource u-boot, but not with the proprietary
> > bootloader. It's probably not a big deal that out-of-tree devices are broken,
> > although would be nice to have one problem less.
> 
> Guys, is there anything I could do to get these patches in linux-next?

I've picked these up into the for-4.17/clk branch in the Tegra tree. I
already have that branch for the MBIST patches which are a dependency
for the for-4.17/soc branch.

Stephen, Mike, let me know if you have any objections to carrying these
in the Tegra tree.

Thanks,
Thierry

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