linux-kernel - [PATCH 4.0 26/60] ARM: dts: OMAP3-N900: Add microphone bias voltages

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Date:	Fri, 15 May 2015 16:14:27 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Pavel Machek <pavel@....cz>,
	Jarkko Nikula <jarkko.nikula@...mer.com>,
	Tony Lindgren <tony@...mide.com>
Subject: [PATCH 4.0 26/60] ARM: dts: OMAP3-N900: Add microphone bias voltages

4.0-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Pavel Machek <pavel@....cz>

commit 1819e3034ee26ffadc71880064ed8b8e7d74f52c upstream.

N900 audio recording needs that codec provides bias voltage for integrated
digital microphone and headset microphone depending which one is used.
Digital microphone uses 2 V bias and it comes from the codec A part. Codec
B part drives the headset microphone bias and that is set to 2.5 V.

Signed-off-by: Pavel Machek <pavel@....cz>
[Jarkko: Headset mic bias changed to 2 (2.5 V) as it was before commit
e2e8bfdf6157 ("ASoC: tlv320aic3x: Convert mic bias to a supply widget")]
Signed-off-by: Jarkko Nikula <jarkko.nikula@...mer.com>
Signed-off-by: Tony Lindgren <tony@...mide.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/arm/boot/dts/omap3-n900.dts |    4 ++++
 1 file changed, 4 insertions(+)

--- a/arch/arm/boot/dts/omap3-n900.dts
+++ b/arch/arm/boot/dts/omap3-n900.dts
@@ -484,6 +484,8 @@
 		DRVDD-supply = <&vmmc2>;
 		IOVDD-supply = <&vio>;
 		DVDD-supply = <&vio>;
+
+		ai3x-micbias-vg = <1>;
 	};
 
 	tlv320aic3x_aux: tlv320aic3x@19 {
@@ -495,6 +497,8 @@
 		DRVDD-supply = <&vmmc2>;
 		IOVDD-supply = <&vio>;
 		DVDD-supply = <&vio>;
+
+		ai3x-micbias-vg = <2>;
 	};
 
 	tsl2563: tsl2563@29 {


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