linux-kernel - [PATCH 3/3] ARM: dts: omap4: embt2ws: Add audio support

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Message-Id: <20230705190324.355282-4-andreas@kemnade.info>
Date:   Wed,  5 Jul 2023 21:03:24 +0200
From:   Andreas Kemnade <andreas@...nade.info>
To:     bcousson@...libre.com, tony@...mide.com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        lgirdwood@...il.com, broonie@...nel.org, perex@...ex.cz,
        tiwai@...e.com, peter.ujfalusi@...il.com, jarkko.nikula@...mer.com,
        dmitry.torokhov@...il.com, andreas@...nade.info,
        linux-omap@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, alsa-devel@...a-project.org
Subject: [PATCH 3/3] ARM: dts: omap4: embt2ws: Add audio support

There is a headset jack on the connection between control unit
and display. Wire things up to have audio output with MCBSP2 as a master.

Signed-off-by: Andreas Kemnade <andreas@...nade.info>
---
 arch/arm/boot/dts/omap4-epson-embt2ws.dts | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/arch/arm/boot/dts/omap4-epson-embt2ws.dts b/arch/arm/boot/dts/omap4-epson-embt2ws.dts
index 5e9a997f686b0..ee86981b2e448 100644
--- a/arch/arm/boot/dts/omap4-epson-embt2ws.dts
+++ b/arch/arm/boot/dts/omap4-epson-embt2ws.dts
@@ -46,6 +46,24 @@ key-lock {
 		};
 	};
 
+	sound {
+		compatible = "simple-audio-card";
+		simple-audio-card,name = "BT2 Sound";
+		simple-audio-card,format = "left_j";
+		simple-audio-card,bitclock-master = <&sound_master>;
+		simple-audio-card,frame-master = <&sound_master>;
+
+		sound_master: simple-audio-card,cpu {
+			system-clock-frequency = <24000000>;
+			sound-dai = <&mcbsp2>;
+		};
+
+		simple-audio-card,codec {
+			sound-dai = <&tlv320aic3x>;
+			system-clock-frequency = <24000000>;
+		};
+	};
+
 	unknown_supply: unknown-supply {
 		compatible = "regulator-fixed";
 		regulator-name = "unknown";
@@ -274,6 +292,9 @@ &mcbsp2 {
 	#sound-dai-cells = <0>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&mcbsp2_pins>;
+	assigned-clocks = <&abe_clkctrl OMAP4_MCBSP2_CLKCTRL 24>;
+	assigned-clock-parents = <&abe_clkctrl OMAP4_MCBSP2_CLKCTRL 26>;
+
 	status = "okay";
 };
 
-- 
2.39.2