arm64: dts: imx93-9x9-qsb: 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/imx93-9x9-qsb.dts b/arch/arm64/boot/dts/freescale/imx93-9x9-qsb.dts
index cd2ad342be6176cb39b4bd0af4171f0a6e0dc919..20ec5b3c21f423a48813e81ca98cc1d090d82550 100644 (file)
--- a/arch/arm64/boot/dts/freescale/imx93-9x9-qsb.dts
+++ b/arch/arm64/boot/dts/freescale/imx93-9x9-qsb.dts
@@ -122,6 +122,20 @@
                };
        };
 
+       sound-micfil {
+               compatible = "fsl,imx-audio-card";
+               model = "micfil-audio";
+
+               pri-dai-link {
+                       link-name = "micfil hifi";
+                       format = "i2s";
+
+                       cpu {
+                               sound-dai = <&micfil>;
+                       };
+               };
+       };
+
        sound-wm8962 {
                compatible = "fsl,imx-audio-wm8962";
                model = "wm8962-audio";
@@ -271,6 +285,12 @@
                        gpios = <22 GPIO_ACTIVE_HIGH>;
                        output-low;
                };
+
+               mic-can-sel-hog {
+                       gpio-hog;
+                       gpios = <17 GPIO_ACTIVE_HIGH>;
+                       output-low;
+               };
        };
 
        pmic@25 {
@@ -355,6 +375,15 @@
        status = "okay";
 };
 
+&micfil {
+       pinctrl-names = "default";
+       pinctrl-0 = <&pinctrl_pdm>;
+       assigned-clocks = <&clk IMX93_CLK_PDM>;
+       assigned-clock-parents = <&clk IMX93_CLK_AUDIO_PLL>;
+       assigned-clock-rates = <49152000>;
+       status = "okay";
+};
+
 &mu1 {
        status = "okay";
 };
@@ -468,6 +497,14 @@
                >;
        };
 
+       pinctrl_pdm: pdmgrp {
+               fsl,pins = <
+                       MX93_PAD_PDM_CLK__PDM_CLK                       0x31e
+                       MX93_PAD_PDM_BIT_STREAM0__PDM_BIT_STREAM00      0x31e
+                       MX93_PAD_PDM_BIT_STREAM1__PDM_BIT_STREAM01      0x31e
+               >;
+       };
+
        pinctrl_uart1: uart1grp {
                fsl,pins = <
                        MX93_PAD_UART1_RXD__LPUART1_RX          0x31e