arm64: dts: imx8mp-evk: Add PDM micphone sound card support

Add PDM micphone sound card support, configure the pinmux.

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

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

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-evk.dts b/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
index c83c480ddd5c4101647458d389caf5fde3b89c96..8be5b2a57f27f4c67c14e813f94c9b49d4303b5a 100644 (file)
--- a/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
@@ -152,6 +152,20 @@
                hdmi-out;
        };
 
+       sound-micfil {
+               compatible = "fsl,imx-audio-card";
+               model = "micfil-audio";
+
+               pri-dai-link {
+                       link-name = "micfil hifi";
+                       format = "i2s";
+
+                       cpu {
+                               sound-dai = <&micfil>;
+                       };
+               };
+       };
+
        reserved-memory {
                #address-cells = <2>;
                #size-cells = <2>;
@@ -535,6 +549,16 @@
        status = "okay";
 };
 
+&micfil {
+       #sound-dai-cells = <0>;
+       pinctrl-names = "default";
+       pinctrl-0 = <&pinctrl_pdm>;
+       assigned-clocks = <&clk IMX8MP_CLK_PDM>;
+       assigned-clock-parents = <&clk IMX8MP_AUDIO_PLL1_OUT>;
+       assigned-clock-rates = <196608000>;
+       status = "okay";
+};
+
 &mipi_dsi {
        samsung,esc-clock-frequency = <10000000>;
        status = "okay";
@@ -801,6 +825,16 @@
                >;
        };
 
+       pinctrl_pdm: pdmgrp {
+               fsl,pins = <
+                       MX8MP_IOMUXC_SAI5_RXC__AUDIOMIX_PDM_CLK         0xd6
+                       MX8MP_IOMUXC_SAI5_RXD0__AUDIOMIX_PDM_BIT_STREAM00       0xd6
+                       MX8MP_IOMUXC_SAI5_RXD1__AUDIOMIX_PDM_BIT_STREAM01       0xd6
+                       MX8MP_IOMUXC_SAI5_RXD2__AUDIOMIX_PDM_BIT_STREAM02       0xd6
+                       MX8MP_IOMUXC_SAI5_RXD3__AUDIOMIX_PDM_BIT_STREAM03       0xd6
+               >;
+       };
+
        pinctrl_pmic: pmicgrp {
                fsl,pins = <
                        MX8MP_IOMUXC_GPIO1_IO03__GPIO1_IO03     0x000001c0