linux-kernel - [PATCH 6/6] ARM: dts: samsung: exynos4212-tab3: Drop dummy mic bias regulators

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Message-Id: <20240716-midas-audio-tab3-v1-6-a53ea075af5a@gmail.com>
Date: Tue, 16 Jul 2024 21:36:10 +0200
From: Artur Weber <aweber.kernel@...il.com>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Alim Akhtar <alim.akhtar@...sung.com>
Cc: devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-sound@...r.kernel.org, ~postmarketos/upstreaming@...ts.sr.ht, 
 Artur Weber <aweber.kernel@...il.com>
Subject: [PATCH 6/6] ARM: dts: samsung: exynos4212-tab3: Drop dummy mic
 bias regulators

Add the samsung,tab3-audio compatible that makes mic bias regulators
non-required, and drop the dummy main/sub mic bias regulators that
don't exist in hardware.

Signed-off-by: Artur Weber <aweber.kernel@...il.com>
---
 arch/arm/boot/dts/samsung/exynos4212-tab3.dtsi | 20 ++------------------
 1 file changed, 2 insertions(+), 18 deletions(-)

diff --git a/arch/arm/boot/dts/samsung/exynos4212-tab3.dtsi b/arch/arm/boot/dts/samsung/exynos4212-tab3.dtsi
index 2f39f3c0661e..a140f86d399b 100644
--- a/arch/arm/boot/dts/samsung/exynos4212-tab3.dtsi
+++ b/arch/arm/boot/dts/samsung/exynos4212-tab3.dtsi
@@ -286,20 +286,6 @@ display_3v3_supply: voltage-regulator-3 {
 		enable-active-high;
 	};
 
-	mic_bias_reg: voltage-regulator-4 {
-		compatible = "regulator-fixed";
-		regulator-name = "MICBIAS_LDO_2.8V";
-		regulator-min-microvolt = <2800000>;
-		regulator-max-microvolt = <2800000>;
-	};
-
-	submic_bias_reg: voltage-regulator-5 {
-		compatible = "regulator-fixed";
-		regulator-name = "SUB_MICBIAS_LDO_2.8V";
-		regulator-min-microvolt = <2800000>;
-		regulator-max-microvolt = <2800000>;
-	};
-
 	earmic_bias_reg: voltage-regulator-6 {
 		compatible = "regulator-fixed";
 		regulator-name = "EAR_MICBIAS_LDO_2.8V";
@@ -310,14 +296,12 @@ earmic_bias_reg: voltage-regulator-6 {
 	};
 
 	sound: sound {
-		compatible = "samsung,midas-audio";
+		compatible = "samsung,tab3-audio", "samsung,midas-audio";
 		model = "TAB3";
-		mic-bias-supply = <&mic_bias_reg>;
-		submic-bias-supply = <&submic_bias_reg>;
-		headset-mic-bias-supply = <&earmic_bias_reg>;
 
 		lineout-sel-gpios = <&gpj1 2 GPIO_ACTIVE_HIGH>;
 
+		headset-mic-bias-supply = <&earmic_bias_reg>;
 		headset-detect-gpios = <&gpx0 4 GPIO_ACTIVE_LOW>;
 		headset-key-gpios = <&gpx3 6 GPIO_ACTIVE_LOW>;
 		samsung,headset-4pole-threshold-microvolt = <710 2000>;

-- 
2.45.2