From: Mark Brown <broonie@kernel.org>
To: Songjun Wu <songjun.wu@atmel.com>
Cc: alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org,
Nicolas Ferre <nicolas.ferre@atmel.com>,
Takashi Iwai <tiwai@suse.com>,
Liam Girdwood <lgirdwood@gmail.com>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] ASoC: Atmel: ClassD: Set GCK's parent clock
Date: Fri, 20 Nov 2015 18:08:54 +0000 [thread overview]
Message-ID: <20151120180854.GD1929@sirena.org.uk> (raw)
In-Reply-To: <1447903590-3285-1-git-send-email-songjun.wu@atmel.com>
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On Thu, Nov 19, 2015 at 11:26:30AM +0800, Songjun Wu wrote:
> Set GCK's parent clock as audio clock, make
> sure the GCK's parent clock is audio clock.
> + ret = clk_set_parent(dd->gclk, dd->aclk);
> + if (ret) {
> + dev_err(dev, "failed to set GCK parent clock: %d\n", ret);
> + return ret;
> + }
Why are we doing this in the driver? This should be done by whatever
creates the clock tree, not by the driver that uses the clocks - that
way if some future SoC has a different clock tree the driver will
continue to work.
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WARNING: multiple messages have this Message-ID (diff)
From: broonie@kernel.org (Mark Brown)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ASoC: Atmel: ClassD: Set GCK's parent clock
Date: Fri, 20 Nov 2015 18:08:54 +0000 [thread overview]
Message-ID: <20151120180854.GD1929@sirena.org.uk> (raw)
In-Reply-To: <1447903590-3285-1-git-send-email-songjun.wu@atmel.com>
On Thu, Nov 19, 2015 at 11:26:30AM +0800, Songjun Wu wrote:
> Set GCK's parent clock as audio clock, make
> sure the GCK's parent clock is audio clock.
> + ret = clk_set_parent(dd->gclk, dd->aclk);
> + if (ret) {
> + dev_err(dev, "failed to set GCK parent clock: %d\n", ret);
> + return ret;
> + }
Why are we doing this in the driver? This should be done by whatever
creates the clock tree, not by the driver that uses the clocks - that
way if some future SoC has a different clock tree the driver will
continue to work.
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From: Mark Brown <broonie@kernel.org>
To: Songjun Wu <songjun.wu@atmel.com>
Cc: linux-arm-kernel@lists.infradead.org,
Nicolas Ferre <nicolas.ferre@atmel.com>,
Liam Girdwood <lgirdwood@gmail.com>,
Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>,
alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] ASoC: Atmel: ClassD: Set GCK's parent clock
Date: Fri, 20 Nov 2015 18:08:54 +0000 [thread overview]
Message-ID: <20151120180854.GD1929@sirena.org.uk> (raw)
In-Reply-To: <1447903590-3285-1-git-send-email-songjun.wu@atmel.com>
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On Thu, Nov 19, 2015 at 11:26:30AM +0800, Songjun Wu wrote:
> Set GCK's parent clock as audio clock, make
> sure the GCK's parent clock is audio clock.
> + ret = clk_set_parent(dd->gclk, dd->aclk);
> + if (ret) {
> + dev_err(dev, "failed to set GCK parent clock: %d\n", ret);
> + return ret;
> + }
Why are we doing this in the driver? This should be done by whatever
creates the clock tree, not by the driver that uses the clocks - that
way if some future SoC has a different clock tree the driver will
continue to work.
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next prev parent reply other threads:[~2015-11-20 18:09 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-19 3:26 [PATCH] ASoC: Atmel: ClassD: Set GCK's parent clock Songjun Wu
2015-11-19 3:26 ` Songjun Wu
2015-11-19 3:26 ` Songjun Wu
2015-11-20 18:08 ` Mark Brown [this message]
2015-11-20 18:08 ` Mark Brown
2015-11-20 18:08 ` Mark Brown
2015-11-23 3:01 ` Wu, Songjun
2015-11-23 3:01 ` Wu, Songjun
2015-11-23 3:01 ` Wu, Songjun
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