arm64: dts: imx943-evk: Add PDM microphone sound card support

Add PDM micphone sound card support, configure the pinmux.

This sound card supports recording sound from PDM microphone and convert
the PDM format data to PCM data.

Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm64/boot/dts/freescale/imx943-evk.dts b/arch/arm64/boot/dts/freescale/imx943-evk.dts
index 85cec644dd92675a6cca65a4129095da8b14ae15..c8c3eff9df1a23c52e74bf2bc5d4ba543bb5a65b 100644 (file)
--- a/arch/arm64/boot/dts/freescale/imx943-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx943-evk.dts
@@ -29,6 +29,11 @@
                stdout-path = &lpuart1;
        };
 
+       dmic: dmic {
+               compatible = "dmic-codec";
+               #sound-dai-cells = <0>;
+       };
+
        reg_usdhc2_vmmc: regulator-usdhc2 {
                compatible = "regulator-fixed";
                off-on-delay-us = <12000>;
@@ -83,6 +88,24 @@
                };
        };
 
+       sound-micfil {
+               compatible = "fsl,imx-audio-card";
+               model = "micfil-audio";
+
+               pri-dai-link {
+                       format = "i2s";
+                       link-name = "micfil hifi";
+
+                       codec {
+                               sound-dai = <&dmic>;
+                       };
+
+                       cpu {
+                               sound-dai = <&micfil>;
+                       };
+               };
+       };
+
        sound-wm8962 {
                compatible = "fsl,imx-audio-wm8962";
                audio-codec = <&wm8962>;
@@ -204,6 +227,12 @@
                                        gpio-hog;
                                        output-high;
                                };
+
+                               mqs-mic-sel-hog {
+                                       gpios = <11 GPIO_ACTIVE_HIGH>;
+                                       gpio-hog;
+                                       output-low;
+                               };
                        };
                };
 
@@ -314,6 +343,13 @@
                                #gpio-cells = <2>;
                                gpio-controller;
 
+                               /* pdm selection */
+                               can-pdm-sel-hog {
+                                       gpios = <12 GPIO_ACTIVE_HIGH>;
+                                       gpio-hog;
+                                       output-low;
+                               };
+
                                sai3-sel-hog {
                                        gpios = <11 GPIO_ACTIVE_HIGH>;
                                        gpio-hog;
@@ -344,6 +380,22 @@
        status = "okay";
 };
 
+&micfil {
+       assigned-clocks = <&scmi_clk IMX94_CLK_AUDIOPLL1_VCO>,
+                         <&scmi_clk IMX94_CLK_AUDIOPLL2_VCO>,
+                         <&scmi_clk IMX94_CLK_AUDIOPLL1>,
+                         <&scmi_clk IMX94_CLK_AUDIOPLL2>,
+                         <&scmi_clk IMX94_CLK_PDM>;
+       assigned-clock-parents = <0>, <0>, <0>, <0>,
+                                <&scmi_clk IMX94_CLK_AUDIOPLL1>;
+       assigned-clock-rates = <3932160000>,
+                              <3612672000>, <393216000>,
+                              <361267200>, <49152000>;
+       pinctrl-0 = <&pinctrl_pdm>;
+       pinctrl-names = "default";
+       status = "okay";
+};
+
 &sai1 {
        assigned-clocks = <&scmi_clk IMX94_CLK_AUDIOPLL1_VCO>,
                          <&scmi_clk IMX94_CLK_AUDIOPLL2_VCO>,
@@ -413,6 +465,14 @@
                >;
        };
 
+       pinctrl_pdm: pdmgrp {
+               fsl,pins = <
+                       IMX94_PAD_PDM_CLK__PDM_CLK                      0x31e
+                       IMX94_PAD_PDM_BIT_STREAM0__PDM_BIT_STREAM0      0x31e
+                       IMX94_PAD_PDM_BIT_STREAM1__PDM_BIT_STREAM1      0x31e
+               >;
+       };
+
        pinctrl_sai1: sai1grp {
                fsl,pins = <
                        IMX94_PAD_SAI1_TXFS__SAI1_TX_SYNC       0x31e