linux-kernel - [PATCH 3/3] arm64: dts: allwinner: pinephone: Enable internal HMIC bias

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Date:   Thu, 16 Jun 2022 01:25:54 -0500
From:   Samuel Holland <samuel@...lland.org>
To:     Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>
Cc:     Arnaud Ferraris <arnaud.ferraris@...labora.com>,
        Samuel Holland <samuel@...lland.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Maxime Ripard <mripard@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Takashi Iwai <tiwai@...e.com>, alsa-devel@...a-project.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-sunxi@...ts.linux.dev
Subject: [PATCH 3/3] arm64: dts: allwinner: pinephone: Enable internal HMIC bias

Revisions 1.0 and 1.1 of the PinePhone mainboard do not have an external
resistor connecting HBIAS to MIC2P. Enable the internal resistor to
provide the necessary headeset microphone bias.

Signed-off-by: Samuel Holland <samuel@...lland.org>
---

 arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.0.dts | 4 ++++
 arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.1.dts | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.0.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.0.dts
index fb65319a3bd3..219f720b8b7d 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.0.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.0.dts
@@ -10,6 +10,10 @@ / {
 	compatible = "pine64,pinephone-1.0", "pine64,pinephone", "allwinner,sun50i-a64";
 };
 
+&codec_analog {
+	allwinner,internal-bias-resistor;
+};
+
 &sgm3140 {
 	enable-gpios = <&pio 2 3 GPIO_ACTIVE_HIGH>; /* PC3 */
 	flash-gpios = <&pio 3 24 GPIO_ACTIVE_HIGH>; /* PD24 */
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.1.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.1.dts
index 5e59d3752178..723af64a9cee 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.1.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.1.dts
@@ -29,6 +29,10 @@ &backlight {
 	default-brightness-level = <400>;
 };
 
+&codec_analog {
+	allwinner,internal-bias-resistor;
+};
+
 &sgm3140 {
 	enable-gpios = <&pio 3 24 GPIO_ACTIVE_HIGH>; /* PD24 */
 	flash-gpios = <&pio 2 3 GPIO_ACTIVE_HIGH>; /* PC3 */
-- 
2.35.1