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From:   Adam Ford <aford173@gmail.com>
To:     linux-arm-kernel@lists.infradead.org
Cc:     aford@beaconembedded.com, Adam Ford <aford173@gmail.com>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Conor Dooley <conor+dt@kernel.org>,
        Shawn Guo <shawnguo@kernel.org>,
        Sascha Hauer <s.hauer@pengutronix.de>,
        Pengutronix Kernel Team <kernel@pengutronix.de>,
        Fabio Estevam <festevam@gmail.com>,
        NXP Linux Team <linux-imx@nxp.com>,
        devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] arm64: dts: imx8mp-beacon-kit: Enable WM8962 Audio CODEC
Date:   Sun, 21 May 2023 18:09:02 -0500
Message-Id: <20230521230902.167280-1-aford173@gmail.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

The baseboard has an WM8962 Audio CODEC connected to the SAI3
peripheral.  The CODEC supports stereo in and out
and a microphone input connected to the headphone jack.
Route this CODEC through the simple-audio-card driver.

Signed-off-by: Adam Ford <aford173@gmail.com>

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-beacon-kit.dts b/arch/arm64/boot/dts/freescale/imx8mp-beacon-kit.dts
index cdae45a48c2c..3480fb522230 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-beacon-kit.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mp-beacon-kit.dts
@@ -118,6 +118,15 @@ pcie0_refclk: clock-pcie {
 		clock-frequency = <100000000>;
 	};
 
+	reg_audio: regulator-wm8962 {
+		compatible = "regulator-fixed";
+		regulator-name = "3v3_aud";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		gpio = <&pca6416_1 11 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+	};
+
 	reg_usdhc2_vmmc: regulator-usdhc2 {
 		compatible = "regulator-fixed";
 		regulator-name = "VSD_3V3";
@@ -137,6 +146,30 @@ reg_usb1_host_vbus: regulator-usb1-vbus {
 		gpio = <&pca6416_1 0 GPIO_ACTIVE_HIGH>;
 		enable-active-high;
 	};
+
+	sound-wm8962 {
+		compatible = "simple-audio-card";
+		simple-audio-card,name = "wm8962";
+		simple-audio-card,format = "i2s";
+		simple-audio-card,widgets = "Headphone", "Headphones",
+					    "Microphone", "Headset Mic",
+					    "Speaker", "Speaker";
+		simple-audio-card,routing = "Headphones", "HPOUTL",
+					    "Headphones", "HPOUTR",
+					    "Speaker", "SPKOUTL",
+					    "Speaker", "SPKOUTR",
+					    "Headset Mic", "MICBIAS",
+					    "IN3R", "Headset Mic";
+		simple-audio-card,cpu {
+			sound-dai = <&sai3>;
+		};
+		simple-audio-card,codec {
+			sound-dai = <&wm8962>;
+			clocks = <&clk IMX8MP_CLK_IPP_DO_CLKO1>;
+			frame-master;
+			bitclock-master;
+		};
+	};
 };
 
 &ecspi2 {
@@ -239,6 +272,34 @@ &i2c4 {
 	clock-frequency = <384000>;
 	status = "okay";
 
+	wm8962: audio-codec@1a {
+		compatible = "wlf,wm8962";
+		reg = <0x1a>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_wm8962>;
+		clocks = <&clk IMX8MP_CLK_IPP_DO_CLKO1>;
+		assigned-clocks = <&clk IMX8MP_CLK_IPP_DO_CLKO1>;
+		assigned-clock-parents = <&clk IMX8MP_AUDIO_PLL2_OUT>;
+		assigned-clock-rates = <22576000>;
+		DCVDD-supply = <&reg_audio>;
+		DBVDD-supply = <&reg_audio>;
+		AVDD-supply = <&reg_audio>;
+		CPVDD-supply = <&reg_audio>;
+		MICVDD-supply = <&reg_audio>;
+		PLLVDD-supply = <&reg_audio>;
+		SPKVDD1-supply = <&reg_audio>;
+		SPKVDD2-supply = <&reg_audio>;
+		gpio-cfg = <
+			0x0000 /* 0:Default */
+			0x0000 /* 1:Default */
+			0x0000 /* 2:FN_DMICCLK */
+			0x0000 /* 3:Default */
+			0x0000 /* 4:FN_DMICCDAT */
+			0x0000 /* 5:Default */
+		>;
+		#sound-dai-cells = <0>;
+	};
+
 	pca6416: gpio@20 {
 		compatible = "nxp,pcal6416";
 		reg = <0x20>;
@@ -315,6 +376,16 @@ &pcie_phy {
 	status = "okay";
 };
 
+&sai3 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_sai3>;
+	assigned-clocks = <&clk IMX8MP_CLK_SAI3>;
+	assigned-clock-parents = <&clk IMX8MP_AUDIO_PLL2_OUT>;
+	assigned-clock-rates = <12288000>;
+	fsl,sai-mclk-direction-output;
+	status = "okay";
+};
+
 &snvs_pwrkey {
 	status = "okay";
 };
@@ -477,6 +548,16 @@ MX8MP_IOMUXC_SD2_RESET_B__GPIO2_IO19	0x40
 		>;
 	};
 
+	pinctrl_sai3: sai3grp {
+		fsl,pins = <
+			MX8MP_IOMUXC_SAI3_TXFS__AUDIOMIX_SAI3_TX_SYNC	0xd6
+			MX8MP_IOMUXC_SAI3_TXC__AUDIOMIX_SAI3_TX_BCLK	0xd6
+			MX8MP_IOMUXC_SAI3_RXD__AUDIOMIX_SAI3_RX_DATA00	0xd6
+			MX8MP_IOMUXC_SAI3_TXD__AUDIOMIX_SAI3_TX_DATA00	0xd6
+			MX8MP_IOMUXC_SAI3_MCLK__AUDIOMIX_SAI3_MCLK	0xd6
+		>;
+	};
+
 	pinctrl_tpm: tpmgrp {
 		fsl,pins = <
 			MX8MP_IOMUXC_SAI1_RXFS__GPIO4_IO00	0x19 /* Reset */
@@ -547,4 +628,10 @@ pinctrl_usdhc2_gpio: usdhc2gpiogrp {
 			MX8MP_IOMUXC_SD2_CD_B__GPIO2_IO12	0x1c4
 		>;
 	};
+
+	pinctrl_wm8962: wm8962grp {
+		fsl,pins = <
+			MX8MP_IOMUXC_GPIO1_IO14__CCM_CLKO1	0x59
+		>;
+	};
 };
-- 
2.39.2