[PATCH v2 24/24] arm64: dts: renesas: r9a09g047e57-smarc: add DA7212 audio codec support

John Madieu
2026-04-02T09:10:46Z

RZ/G3E SMARC board has a DA7212 audio codec connected via I2C1 for
sound input/output using SSI3/SSI4 where:

- The codec receives its master clock from the Versa3 clock
generator present on the SoM
- SSI4 shares clock pins with SSI3 to provide a separate data
line for full-duplex audio capture.

Enable audio support on RZ/G3E SMARC2 EVK boards with a DA7212 audio codec.

Signed-off-by: John Madieu <john.madieu.xa@bp.renesas.com>
---

Changes:

v2: No changes

.../boot/dts/renesas/r9a09g047e57-smarc.dts | 114 ++++++++++++++++++
1 file changed, 114 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r9a09g047e57-smarc.dts b/arch/arm64/boot/dts/renesas/r9a09g047e57-smarc.dts
index 9be57785d9d5..2f4795e5e82b 100644
--- a/arch/arm64/boot/dts/renesas/r9a09g047e57-smarc.dts
+++ b/arch/arm64/boot/dts/renesas/r9a09g047e57-smarc.dts
@@ -32,6 +32,37 @@
#include "rzg3e-smarc-som.dtsi"
#include "renesas-smarc2.dtsi"

+/*
+ * SSI-DA7212
+ *
+ * These commands are required when Playback/Capture
+ *
+ * amixer -q cset name='Aux Switch' on
+ * amixer -q cset name='Mixin Left Aux Left Switch' on
+ * amixer -q cset name='Mixin Right Aux Right Switch' on
+ * amixer -q cset name='ADC Switch' on
+ * amixer -q cset name='Mixout Right Mixin Right Switch' off
+ * amixer -q cset name='Mixout Left Mixin Left Switch' off
+ * amixer -q cset name='Headphone Volume' 70%
+ * amixer -q cset name='Headphone Switch' on
+ * amixer -q cset name='Mixout Left DAC Left Switch' on
+ * amixer -q cset name='Mixout Right DAC Right Switch' on
+ * amixer -q cset name='DAC Left Source MUX' 'DAI Input Left'
+ * amixer -q cset name='DAC Right Source MUX' 'DAI Input Right'
+ * amixer -q sset 'Mic 1 Amp Source MUX' 'MIC_P'
+ * amixer -q sset 'Mic 2 Amp Source MUX' 'MIC_P'
+ * amixer -q sset 'Mixin Left Mic 1' on
+ * amixer -q sset 'Mixin Right Mic 2' on
+ * amixer -q sset 'Mic 1' 90% on
+ * amixer -q sset 'Mic 2' 90% on
+ * amixer -q sset 'Lineout' 80% on
+ * amixer -q set "Headphone" 100% on
+ *
+ * When Capture chained with DVC, use this command to amplify sound
+ * amixer set 'DVC In',0 80%
+ * For playback, use: amixer set 'DVC Out',0 80%
+ */
+
/ {
model = "Renesas SMARC EVK version 2 based on r9a09g047e57";
compatible = "renesas,smarc2-evk", "renesas,rzg3e-smarcm",
@@ -55,6 +86,22 @@ vqmmc_sd1_pvdd: regulator-vqmmc-sd1-pvdd {
gpios-states = <0>;
states = <3300000 0>, <1800000 1>;
};
+
+ sound_card: sound {
+ compatible = "audio-graph-card";
+
+ label = "snd-rzg3e";
+
+ dais = <&rsnd_port0>; /* DA7212 */
+ };
+};
+
+&audio_clkb {
+ clock-frequency = <11289600>;
+};
+
+&audio_clkc {
+ clock-frequency = <12288000>;
};

&canfd {
@@ -99,6 +146,37 @@ &i2c0 {
pinctrl-names = "default";
};

+&i2c1 {
+ da7212: codec@1a {
+ compatible = "dlg,da7212";
+ #sound-dai-cells = <0>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0x1a>;
+
+ clocks = <&versa3 1>;
+ clock-names = "mclk";
+
+ dlg,micbias1-lvl = <2500>;
+ dlg,micbias2-lvl = <2500>;
+ dlg,dmic-data-sel = "lrise_rfall";
+ dlg,dmic-samplephase = "between_clkedge";
+ dlg,dmic-clkrate = <3000000>;
+
+ VDDA-supply = <&reg_1p8v>;
+ VDDSP-supply = <&reg_3p3v>;
+ VDDMIC-supply = <&reg_3p3v>;
+ VDDIO-supply = <&reg_1p8v>;
+
+ port {
+ da7212_endpoint: endpoint {
+ remote-endpoint = <&rsnd_endpoint0>;
+ mclk-fs = <256>;
+ };
+ };
+ };
+};
+
&keys {
pinctrl-0 = <&nmi_pins>;
pinctrl-names = "default";
@@ -280,6 +358,42 @@ &sdhi1 {
vqmmc-supply = <&vqmmc_sd1_pvdd>;
};

+&snd_rzg3e {
+ pinctrl-0 = <&sound_clk_pins &sound_pins>;
+ pinctrl-names = "default";
+
+ status = "okay";
+
+ /* audio_clkout */
+ #clock-cells = <0>;
+ clock-frequency = <11289600>;
+
+ /* Multi DAI */
+ #sound-dai-cells = <1>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ rsnd_port0: port@0 {
+ reg = <0>;
+ rsnd_endpoint0: endpoint {
+ remote-endpoint = <&da7212_endpoint>;
+
+ dai-format = "i2s";
+ bitclock-master = <&rsnd_endpoint0>;
+ frame-master = <&rsnd_endpoint0>;
+
+ playback = <&ssi3>, <&src1>, <&dvc1>;
+ capture = <&ssi4>, <&src0>, <&dvc0>;
+ };
+ };
+ };
+};
+
+&ssi4 {
+ shared-pin;
+};
+
&xhci {
pinctrl-0 = <&usb3_pins>;
pinctrl-names = "default";
--
2.25.1