Re: [alsa-devel] [RFC PATCH] mfd: arizona: Add gating of external MCLKn clocks

From	Sylwester Nawrocki <s.nawrocki@samsung.com>
Newsgroups	linux.kernel
Subject	Re: [alsa-devel] [RFC PATCH] mfd: arizona: Add gating of external MCLKn clocks
Date	2016-08-25 15:50 +0200
Message-ID	<sa3cB-1AH-5@gated-at.bofh.it> (permalink)
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On 08/25/2016 03:02 PM, Charles Keepax wrote:
> Yes so the MCLK needs to be available before we start the FLL, so
> my thinking was we would enable the clock that corresponds
> to the source for the FLL in arizona_set_fll before we start
> enabling the FLL.
> 
> The direct MCLK would require a little more work but we could
> probably enable the clock in this case from wm5110_sysclk_ev.
> 
> I have sent you through a copy of my prototype clock patches you
> can have a look at. I am going to have a bit of a look over this
> today and hopefully will be able to get back to you with more
> concrete thoughts later today.

Thanks, I will have a closer look at the patches.

I have hard coded the MCLK frequency in the tm2_wm511 machine driver
as its fixed anyway and now if the MCLK gating was taken care of by
the CODEC we wouldn't need at all to get at the MCLK clocks in the
machine driver.

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[RFC PATCH] mfd: arizona: Add gating of external MCLKn clocks Sylwester Nawrocki <s.nawrocki@samsung.com> - 2016-08-19 19:20 +0200
  Re: [RFC PATCH] mfd: arizona: Add gating of external MCLKn clocks Charles Keepax <ckeepax@opensource.wolfsonmicro.com> - 2016-08-22 11:30 +0200
    Re: [alsa-devel] [RFC PATCH] mfd: arizona: Add gating of external  MCLKn clocks Sylwester Nawrocki <s.nawrocki@samsung.com> - 2016-08-22 19:30 +0200
      Re: [alsa-devel] [RFC PATCH] mfd: arizona: Add gating of external  MCLKn clocks Mark Brown <broonie@kernel.org> - 2016-08-22 19:50 +0200
        Re: [alsa-devel] [RFC PATCH] mfd: arizona: Add gating of external  MCLKn clocks Sylwester Nawrocki <s.nawrocki@samsung.com> - 2016-08-23 18:50 +0200
      Re: [alsa-devel] [RFC PATCH] mfd: arizona: Add gating of external  MCLKn clocks Charles Keepax <ckeepax@opensource.wolfsonmicro.com> - 2016-08-23 18:30 +0200
        Re: [alsa-devel] [RFC PATCH] mfd: arizona: Add gating of external  MCLKn clocks Sylwester Nawrocki <s.nawrocki@samsung.com> - 2016-08-25 12:40 +0200
          Re: [alsa-devel] [RFC PATCH] mfd: arizona: Add gating of external  MCLKn clocks Charles Keepax <ckeepax@opensource.wolfsonmicro.com> - 2016-08-25 15:40 +0200
            Re: [alsa-devel] [RFC PATCH] mfd: arizona: Add gating of external  MCLKn clocks Sylwester Nawrocki <s.nawrocki@samsung.com> - 2016-08-25 15:50 +0200

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