linux-kernel - Re: Regression found (Stop-marking-clocks-as-CLK_IS

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Date:   Tue, 30 Oct 2018 17:03:05 +0200
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Hans de Goede <hdegoede@...hat.com>
Cc:     duffydack73@...il.com,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        linux-clk <linux-clk@...r.kernel.org>,
        Stable <stable@...r.kernel.org>,
        Johannes Stezenbach <js@...21.net>,
        Carlo Caione <carlo@...lessm.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        mogens-jensen@...tonmail.com
Subject: Re: Regression found (Stop-marking-clocks-as-CLK_IS_CRITICAL)

On Tue, Oct 30, 2018 at 4:48 PM Hans de Goede <hdegoede@...hat.com> wrote:
> On 30-10-18 15:38, Dean Wallace wrote:

> > Excellent work Hans.  Compiled 4.19 with
> > 0001-ASoC-intel-cht_bsw_max98090_ti-Use-pmc_plt_clk_0-ins.patch, sound
> > works as before.
> >
> > for i in /sys/kernel/debug/clk/pmc_plt_clk_?; do echo -n "$i: "; cat $i/clk_flags; echo; done
> > /sys/kernel/debug/clk/pmc_plt_clk_0:
> > /sys/kernel/debug/clk/pmc_plt_clk_1:
> > /sys/kernel/debug/clk/pmc_plt_clk_2:
> > /sys/kernel/debug/clk/pmc_plt_clk_3:
> > /sys/kernel/debug/clk/pmc_plt_clk_4:
> > /sys/kernel/debug/clk/pmc_plt_clk_5:
>
> Ok, so as I expected the Swanky is using pmc_plt_clk_0
> as mclk instead of pmc_plt_clk_3. Now the question
> becomes is this true for all the designs using the
> max98090 codec?

> 1) Unconditionally use pmc_plt_clk_0 as mclk (as my test patch does)
> in the cht_bsw_max98090_ti.c machine driver

I don't know the details, but the main question here indeed do we ever
had a working example of that machine with CLK #3 in use?

P.S. I would go your first proposal until the opposite will be proved.

-- 
With Best Regards,
Andy Shevchenko