From mboxrd@z Thu Jan 1 00:00:00 1970 From: broonie@opensource.wolfsonmicro.com (Mark Brown) Date: Wed, 23 Jan 2013 23:48:12 +0800 Subject: [alsa-devel] [PATCH V2 2/2] ASoC: Davinci: machine: Add device tree binding In-Reply-To: <1BAFE6F6C881BF42822005164F1491C33EB50DCF@DBDE01.ent.ti.com> References: <1357293277-25543-1-git-send-email-gururaja.hebbar@ti.com> <1357293277-25543-3-git-send-email-gururaja.hebbar@ti.com> <20130104122612.GM4627@opensource.wolfsonmicro.com> <1BAFE6F6C881BF42822005164F1491C33EB50DCF@DBDE01.ent.ti.com> Message-ID: <20130123154804.GB4565@opensource.wolfsonmicro.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Wed, Jan 23, 2013 at 12:39:35PM +0000, Hebbar, Gururaja wrote: > On Fri, Jan 04, 2013 at 17:56:12, Mark Brown wrote: > > The CODEC driver biases should be changed over to be supplies, this > > makes the above much more natural - the routing there is a hack for > > older versions of ASoc. Otherwise this looks fine. > ON TLV320AIC3x Codec, MIC Bias power on/off share the same register bits > with Bias voltage output. So you need to use an event to write the actual enable bit. > SGTL5000 --> Single register for MIC BIAS enable & output impedance of MIC > Bias. The driver uses SND_SOC_DAPM_POST_PMU & SND_SOC_DAPM_PRE_PMD macro to > handle the MIC Bias enable & disable event. This is the way these things should be handled. -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 836 bytes Desc: Digital signature URL: