linux-kernel - [PATCH 3/5] ARM: mvebu: add audio support to Armada 385 DB

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Message-Id: <20220920132648.2008-4-pali@kernel.org>
Date:   Tue, 20 Sep 2022 15:26:46 +0200
From:   Pali Rohár <pali@...nel.org>
To:     Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>, Andrew Lunn <andrew@...n.ch>,
        Gregory Clement <gregory.clement@...tlin.com>,
        Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
        Marcin Wojtas <mw@...ihalf.com>
Cc:     alsa-devel@...a-project.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: [PATCH 3/5] ARM: mvebu: add audio support to Armada 385 DB

From: Marcin Wojtas <mw@...ihalf.com>

This commit adds the necessary Device Tree information to enable
audio support on the Armada 385 DB platform. In details it:

 * Instantiates the CS42L51 audio codec on the I2C0 bus

 * Adds simple-card DT binding for audio on Armada 385 DB

 * Adds description for both analog I2S and S/PDIF I/O

 * Disabled by default

Signed-off-by: Marcin Wojtas <mw@...ihalf.com>
Signed-off-by: Nadav Haklai <nadavh@...vell.com>
Tested-by: Star_Automation <star@...vell.com>
Tested-by: Lior Amsalem <alior@...vell.com>
---
 arch/arm/boot/dts/armada-388-db.dts | 69 +++++++++++++++++++++++++++++
 1 file changed, 69 insertions(+)

diff --git a/arch/arm/boot/dts/armada-388-db.dts b/arch/arm/boot/dts/armada-388-db.dts
index 5130eccc32af..2bcec5419b66 100644
--- a/arch/arm/boot/dts/armada-388-db.dts
+++ b/arch/arm/boot/dts/armada-388-db.dts
@@ -36,6 +36,11 @@
 			i2c@...00 {
 				status = "okay";
 				clock-frequency = <100000>;
+				audio_codec: audio-codec@4a {
+					#sound-dai-cells = <0>;
+					compatible = "cirrus,cs42l51";
+					reg = <0x4a>;
+				};
 			};
 
 			i2c@...00 {
@@ -99,6 +104,12 @@
 				no-1-8-v;
 			};
 
+			audio-controller@...00 {
+				pinctrl-0 = <&i2s_pins>;
+				pinctrl-names = "default";
+				status = "disabled";
+			};
+
 			usb3@...00 {
 				status = "okay";
 			};
@@ -128,6 +139,64 @@
 			};
 		};
 	};
+
+	sound {
+		compatible = "simple-audio-card";
+		simple-audio-card,name = "Armada 385 DB Audio";
+		simple-audio-card,mclk-fs = <256>;
+		simple-audio-card,widgets =
+			"Headphone", "Out Jack",
+			"Line", "In Jack";
+		simple-audio-card,routing =
+			"Out Jack", "HPL",
+			"Out Jack", "HPR",
+			"AIN1L", "In Jack",
+			"AIN1R", "In Jack";
+		status = "disabled";
+
+		simple-audio-card,dai-link@0 {
+			format = "i2s";
+			cpu {
+				sound-dai = <&audio_controller 0>;
+			};
+
+			codec {
+				sound-dai = <&audio_codec>;
+			};
+		};
+
+		simple-audio-card,dai-link@1 {
+			format = "i2s";
+			cpu {
+				sound-dai = <&audio_controller 1>;
+			};
+
+			codec {
+				sound-dai = <&spdif_out>;
+			};
+		};
+
+		simple-audio-card,dai-link@2 {
+			format = "i2s";
+			cpu {
+				sound-dai = <&audio_controller 1>;
+			};
+
+			codec {
+				sound-dai = <&spdif_in>;
+			};
+		};
+	};
+
+	spdif_out: spdif-out {
+		#sound-dai-cells = <0>;
+		compatible = "linux,spdif-dit";
+	};
+
+	spdif_in: spdif-in {
+		#sound-dai-cells = <0>;
+		compatible = "linux,spdif-dir";
+	};
 };
 
 &spi0 {
-- 
2.20.1