linux-kernel - [PATCH v2 6/6] arm64: dts: ad402: enable audio

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Message-ID: <20250309182127.1322890-7-jan.dakinevich@salutedevices.com>
Date: Sun, 9 Mar 2025 21:21:27 +0300
From: Jan Dakinevich <jan.dakinevich@...utedevices.com>
To: Jan Dakinevich <jan.dakinevich@...utedevices.com>, Conor Dooley
	<conor+dt@...nel.org>, <devicetree@...r.kernel.org>, Jerome Brunet
	<jbrunet@...libre.com>, Kevin Hilman <khilman@...libre.com>, Krzysztof
 Kozlowski <krzk+dt@...nel.org>, Liam Girdwood <lgirdwood@...il.com>,
	<linux-amlogic@...ts.infradead.org>, <linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>, <linux-sound@...r.kernel.org>, Mark Brown
	<broonie@...nel.org>, Martin Blumenstingl
	<martin.blumenstingl@...glemail.com>, Neil Armstrong
	<neil.armstrong@...aro.org>, Philipp Zabel <p.zabel@...gutronix.de>, Rob
 Herring <robh@...nel.org>
Subject: [PATCH v2 6/6] arm64: dts: ad402: enable audio

 * playback to speaker

   - setup:
     $ amixer set "FRDDR_A SINK 1 SEL" "OUT 0"
     $ amixer set "FRDDR_A SRC 1 EN" "on"
     $ amixer set "TDMOUT_A SRC SEL" "IN 0"
     $ amixer set "TOACODEC Source" "I2S A"
     $ amixer set "TOACODEC Lane Select" "0"
     $ amixer set "TOACODEC EN" "on"
     $ amixer set "ACODEC" "70%"
     $ amixer set "ACODEC Playback Channel Mode" "Mono"

   - usage:
     $ aplay -D hw:0,0 -f S16_LE -r 48000 /path/to/sample.wav

 * capture from digital mics

   - setup:
     $ amixer set "TODDR_B SRC SEL" "IN 4"

   - usage:
     $ arecord -D hw:0,1 -f S32_LE -r 48000 -c 2 -t wav /path/to/sample.wav

 * capture from analog mics

   - setup:
     $ amixer set "TDMIN_A SRC SEL" "IN 3"
     $ amixer set "TODDR_A SRC SEL" "IN 0"
     $ amixer set "TOACODEC Source" "I2S A"
     $ amixer set "TOACODEC Lane Select" "0"
     $ amixer set "TOACODEC EN" "on"
     $ amixer set "ACODEC ADC" "70%"
     $ amixer set "ACODEC ADC Filter" "on"
     $ amixer set "ACODEC ADC Filter Mode" "HiFi"
     $ amixer set "ACODEC ADC PGA" "50%"

   - usage:
     $ arecord -D hw:0,2 -f S16_LE -r 48000 -c 2 -t wav /path/to/sample.wav

 * capture from TDM loopback

   - setup:
     $ amixer set "TDMIN_LB SRC SEL" "IN 0"
     $ amixer set "TODDR_B SRC SEL" "IN 6"

   - usage:
     $ arecord -D hw:0,1 -f S16_LE -r 48000 -c 2 -t wav /path/to/sample.wav

   or

   - setup:
     $ amixer set "TDMIN_LB SRC SEL" "IN 0"
     $ amixer set "TODDR_A SRC SEL" "IN 6"

   - usage:
     $ arecord -D hw:0,2 -f S16_LE -r 48000 -c 2 -t wav /path/to/sample.wav

Signed-off-by: Jan Dakinevich <jan.dakinevich@...utedevices.com>
Signed-off-by: Dmitry Rokosov <ddrokosov@...utedevices.com>
---
 .../arm64/boot/dts/amlogic/meson-a1-ad402.dts | 110 ++++++++++++++++++
 1 file changed, 110 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/meson-a1-ad402.dts b/arch/arm64/boot/dts/amlogic/meson-a1-ad402.dts
index 0d92f5253b64..09a5732f0981 100644
--- a/arch/arm64/boot/dts/amlogic/meson-a1-ad402.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-a1-ad402.dts
@@ -9,6 +9,8 @@
 #include "meson-a1.dtsi"
 #include <dt-bindings/thermal/thermal.h>
 
+#include <dt-bindings/gpio/gpio.h>
+
 / {
 	compatible = "amlogic,ad402", "amlogic,a1";
 	model = "Amlogic Meson A1 AD402 Development Board";
@@ -128,6 +130,98 @@ map1 {
 			};
 		};
 	};
+
+	amplifier: amplifier {
+		compatible = "simple-audio-amplifier";
+		sound-name-prefix = "AMPLIFIER";
+		enable-gpios = <&gpio GPIOF_4 GPIO_ACTIVE_HIGH>;
+		VCC-supply = <&battery_4v2>;
+	};
+
+	dmics: dmics {
+		compatible = "dmic-codec";
+		#sound-dai-cells = <0>;
+		sound-name-prefix = "MIC";
+		num-channels = <4>;
+		wakeup-delay-ms = <50>;
+	};
+
+	sound {
+		compatible = "amlogic,axg-sound-card";
+		model = "AD402";
+		audio-aux-devs = <&tdmout_a>,
+				 <&amplifier>,
+				 <&tdmin_lb>,
+				 <&tdmin_a>;
+		audio-routing = "TDMOUT_A IN 0", "FRDDR_A OUT 0",
+				"TDM_A Playback", "TDMOUT_A OUT",
+				"AMPLIFIER INL", "ACODEC LOLP",
+				"AMPLIFIER INR", "ACODEC LORP",
+
+				"TODDR_B IN 4", "PDM Capture",
+
+				"TDMIN_LB IN 0", "TDM_A Loopback",
+				"TODDR_A IN 6", "TDMIN_LB OUT",
+				"TODDR_B IN 6", "TDMIN_LB OUT",
+
+				"TDMIN_A IN 3", "TDM_A Capture",
+				"TODDR_A IN 0", "TDMIN_A OUT";
+		assigned-clocks = <&clkc_pll CLKID_HIFI_PLL>;
+		assigned-clock-parents = <0>;
+		assigned-clock-rates = <1536000000>;
+
+		dai-link-0 {
+			sound-dai = <&frddr_a>;
+		};
+
+		dai-link-1 {
+			sound-dai = <&toddr_b>;
+		};
+
+		dai-link-2 {
+			sound-dai = <&toddr_a>;
+		};
+
+		dai-link-3 {
+			sound-dai = <&tdmif_a>;
+			dai-format = "i2s";
+			dai-tdm-slot-tx-mask-0 = <1 1>;
+			dai-tdm-slot-rx-mask-0 = <1 1>;
+			mclk-fs = <256>;
+
+			codec-0 {
+				sound-dai = <&toacodec TOACODEC_IN_A>;
+			};
+
+			codec-1 {
+				sound-dai = <&toacodec TOACODEC_CAPTURE_OUT_A>;
+			};
+		};
+
+		dai-link-4 {
+			sound-dai = <&toacodec TOACODEC_OUT>;
+
+			codec {
+				sound-dai = <&acodec>;
+			};
+		};
+
+		dai-link-5 {
+			sound-dai = <&toacodec TOACODEC_CAPTURE_IN>;
+
+			codec {
+				sound-dai = <&acodec>;
+			};
+		};
+
+		dai-link-6 {
+			sound-dai = <&pdm>;
+
+			codec {
+				sound-dai = <&dmics>;
+			};
+		};
+	};
 };
 
 /* Bluetooth HCI H4 */
@@ -190,3 +284,19 @@ &sd_emmc {
 	vmmc-supply = <&vddao_3v3>;
 	vqmmc-supply = <&vddio_1v8>;
 };
+
+&acodec {
+	AVDD-supply = <&vddio_1v8>;
+	lineout-left = "right-inverted";
+	lineout-right = "right";
+	linein-left = "differential";
+	linein-right = "differential";
+	micbias = "2.5V";
+};
+
+&pdm {
+	pinctrl-0 = <&pdm_din0_a_pins>,
+		    <&pdm_din1_a_pins>,
+		    <&pdm_dclk_a_pins>;
+	pinctrl-names = "default";
+};
-- 
2.34.1