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From:   Andreas Kemnade <andreas@kemnade.info>
To:     bcousson@baylibre.com, tony@atomide.com, robh+dt@kernel.org,
        krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org,
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        dmitry.torokhov@gmail.com, andreas@kemnade.info,
        linux-omap@vger.kernel.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org, alsa-devel@alsa-project.org
Subject: [PATCH 3/3] ARM: dts: omap4: embt2ws: Add audio support
Date:   Wed,  5 Jul 2023 21:03:24 +0200
Message-Id: <20230705190324.355282-4-andreas@kemnade.info>
In-Reply-To: <20230705190324.355282-1-andreas@kemnade.info>
References: <20230705190324.355282-1-andreas@kemnade.info>
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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@kemnade.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