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

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Date:   Thu, 1 Nov 2018 15:49:44 +0100
From:   Hans de Goede <hdegoede@...hat.com>
To:     Dean Wallace <duffydack73@...il.com>
Cc:     Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        Andy Shevchenko <andy.shevchenko@...il.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>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Mogens Jensen <mogens-jensen@...tonmail.com>
Subject: Re: Regression found (Stop-marking-clocks-as-CLK_IS_CRITICAL)

Hi,

On 01-11-18 15:28, Dean Wallace wrote:
> On 01-11-18, Hans de Goede wrote:
>> Hi,
>>
>> On 01-11-18 11:37, Dean Wallace wrote:
>>> On 31-10-18, Pierre-Louis Bossart wrote:
>>>>
>>>>> Just thought it worth mentioning, this new patch that fixes sound
>>>>> again, seems to have ressurected an old issue with PLL unlock.  I'm
>>>>> seeing journal entries after fresh boot ......
>>>>>
>>>>> ```
>>>>> picard kernel: max98090 i2c-193C9890:00: PLL unlocked
>>>>> picard systemd[462]: Started Sound Service.
>>>>> picard kernel: max98090 i2c-193C9890:00: PLL unlocked
>>>>> picard kernel: max98090 i2c-193C9890:00: PLL unlocked
>>>>> picard kernel: max98090 i2c-193C9890:00: PLL unlocked
>>>>> picard kernel: max98090 i2c-193C9890:00: PLL unlocked
>>>>> picard kernel: max98090 i2c-193C9890:00: PLL unlocked
>>>>> picard kernel: max98090 i2c-193C9890:00: PLL unlocked
>>>>> picard kernel: max98090 i2c-193C9890:00: PLL unlocked
>>>>> picard kernel: max98090 i2c-193C9890:00: PLL unlocked
>>>>> picard kernel: max98090_pll_work: 141 callbacks suppressed
>>>>> picard kernel: max98090 i2c-193C9890:00: PLL unlocked
>>>>> ```
>>>>>
>>>>> sound is ok, but sometimes plugging in headphones spams journal with
>>>>> those PLL messages, and sound turns into "daleks", and I have to
>>>>> remove/insert headphones few times or stop/start audio to fix it.
>>>>> It's a very old issue, maybe you'd know more about it.
>>>>
>>>> I noticed this error on my Orco device used for tests many moons ago, but I
>>>> could never find out what led to this error case, it wasn't deterministic
>>>> and didn't impact the audio quality. All I could do is rate_limit it... If
>>>> we have an A vs. B situation it'd be really helpful to diagnose further.
>>>>
>>>> Is there really a causality between the changes from Hans and this PLL
>>>> unlock error? Are you 100% sure this was not present in the previous install
>>>> you used (4.18.14 as mentioned earlier in the thread)?
>>>>
>>>> Thanks
>>>>
>>>> -Pierre
>>>>
>>> Well, numerous boots, kernels, headphone inserting - no PLL or
>>> 'Daleks'.  My laptop must have been haunted that day (halloween).
>>> I'll put it to bed.
>>
>> So you can no longer reproduce. Bummer. Note this might be caused by
>> the temperature of the laptop when you were running the tests...
>>
>> Anyways if you hit this again and you can reproduce it, please
>> give adding a msleep(10) after code mucking with the clk a try.
>>
>> Regards,
>>
>> Hans
>>
> Right then, I can make it unlock and 'daleks' by going into
> pavucontrol and switching the Profile back and forth from Stereo
> Output to Stereo Output+Analog Mono Input, which is actually something
> I've done to make it correct itself as well.  I don't use the mic or
> anything so I've had it set to Stereo Ouput only which I 'think' has
> somehow made it more stable for me.  With all my playing around, one
> of the things I did was clean out my .config/pulse folder which meant
> by default the 'Profile' in pavucontrol was set to Output+Input, which
> seems to help trigger the PLL issue when inserting headphones.
> 
> So what would you like me to do, as I can trigger it on demand it
> seems.

Please give the attached patch a try (on top of my patch for the clk quirk)
and let us know if that fixes these errors.

Regards,

Hans


View attachment "0001-ASoC-intel-cht_bsw_max98090_ti-Sleep-a-bit-after-ena.patch" of type "text/x-patch" (1259 bytes)