From: Kai Vehmanen <kai.vehmanen@linux.intel.com>
To: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Cc: Takashi Iwai <tiwai@suse.de>, intel-gfx@lists.freedesktop.org
Subject: Re: [Intel-gfx] [PATCH 2/2] drm/i915: move audio CDCLK constraint setup to bind/unbind
Date: Mon, 16 Mar 2020 19:28:45 +0200 (EET) [thread overview]
Message-ID: <alpine.DEB.2.21.2003161921030.2957@eliteleevi.tm.intel.com> (raw)
In-Reply-To: <alpine.DEB.2.21.2003131816400.2957@eliteleevi.tm.intel.com>
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Hey Ville and others,
On Fri, 13 Mar 2020, Kai Vehmanen wrote:
> On Fri, 13 Mar 2020, Ville Syrjälä wrote:
> Now thinking of another possibility, is it possible to hook code to
> power-up of power domains? E.g. can I hook custom code which is executed
[...]
> If we could reprogram AUD_FREQ_CNTRL outside the get/put_power() flow
> (i.e. independently from audio driver), and guarantee that if the display
> side is powered on, the link params are always correct, it might be
> possible to get away without calling get_power() from audio controller
... no need to answer this. I made an ugly hack directly to
intel_display_power.c and added a hook to audio restore, but, but, this
does not seem to help. I can still hit hangs unless I bump cdclk before
the reset -- i.e. restoring AUD_FREQ_CNTRL is not enough.
Br, Kai
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next prev parent reply other threads:[~2020-03-16 17:28 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-13 14:48 [Intel-gfx] [PATCH 1/2] drm/i915: use effective iDisp BCLK value for CDCLK calculation Kai Vehmanen
2020-03-13 14:48 ` [Intel-gfx] [PATCH 2/2] drm/i915: move audio CDCLK constraint setup to bind/unbind Kai Vehmanen
2020-03-13 15:14 ` Ville Syrjälä
2020-03-13 18:17 ` Kai Vehmanen
2020-03-16 17:28 ` Kai Vehmanen [this message]
2020-03-24 15:52 ` Kai Vehmanen
2020-03-13 17:40 ` [Intel-gfx] ✗ Fi.CI.BAT: failure for series starting with [1/2] drm/i915: use effective iDisp BCLK value for CDCLK calculation Patchwork
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