From: Mark Brown <broonie@opensource.wolfsonmicro.com>
To: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Cc: alsa-devel@alsa-project.org, lrg@slimlogic.co.uk
Subject: Re: [PATCH v2 8/8] ASoC: TWL4030: Add functionalty to reset the registers
Date: Wed, 26 May 2010 13:09:54 -0700 [thread overview]
Message-ID: <20100526200954.GA19188@opensource.wolfsonmicro.com> (raw)
In-Reply-To: <1274863101-18514-9-git-send-email-peter.ujfalusi@nokia.com>
On Wed, May 26, 2010 at 11:38:21AM +0300, Peter Ujfalusi wrote:
> Machine driver can instruct the codec driver to reset the
> chip registers to their default values at probe time.
>
> If machine driver does not provide setup data, then the
> registers are going to be reseted to their defaults, to
> be safe.
>
> If the developer on the platform confirms that the register
> reset is not needed, than it can be skipped, saving ~20ms
> time in probe.
>
> As safety measure do the register reset at remove time also.
>
> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
next prev parent reply other threads:[~2010-05-27 0:35 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-26 8:38 [PATCH v2 0/8] ASoC: TWL4030: put the codec to off when not active Peter Ujfalusi
2010-05-26 8:38 ` [PATCH v2 1/8] ASoC: TWL4030: Revisit codec defaults Peter Ujfalusi
2010-05-26 8:38 ` [PATCH v2 2/8] ASoC: TWL4030: Remove wrapper for power down Peter Ujfalusi
2010-05-26 8:38 ` [PATCH v2 3/8] ASoC: TWL4030: Make offset cancellation path configurable Peter Ujfalusi
2010-05-26 8:38 ` [PATCH v2 4/8] ASoC: TWL4030: Optimize the power up sequence Peter Ujfalusi
2010-05-26 8:38 ` [PATCH v2 5/8] ASoC: TWL4030: Helper to check chip default registers Peter Ujfalusi
2010-05-26 8:38 ` [PATCH v2 6/8] ASoC: TWL4030: Correct the ARXR2_APGA_CTL chip default Peter Ujfalusi
2010-05-26 8:38 ` [PATCH v2 7/8] ASoC: TWL4030: Use BIAS_OFF instead of BIAS_STANDBY, when not in use Peter Ujfalusi
2010-05-26 8:38 ` [PATCH v2 8/8] ASoC: TWL4030: Add functionalty to reset the registers Peter Ujfalusi
2010-05-26 20:09 ` Mark Brown [this message]
2010-05-31 9:39 ` [PATCH v2 0/8] ASoC: TWL4030: put the codec to off when not active Liam Girdwood
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