arm64: dts: imx952-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: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>

diff --git a/arch/arm64/boot/dts/freescale/imx952-evk.dts b/arch/arm64/boot/dts/freescale/imx952-evk.dts
index 2615fbb631453dad078caa2f06f4608cda23674c..62d1c1c7c5013bc8d95305467676dddde9f86b16 100644 (file)
--- a/arch/arm64/boot/dts/freescale/imx952-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx952-evk.dts
@@ -52,6 +52,12 @@
                stdout-path = &lpuart1;
        };
 
+       dmic: dmic {
+               compatible = "dmic-codec";
+               #sound-dai-cells = <0>;
+               num-channels = <2>;
+       };
+
        memory@80000000 {
                device_type = "memory";
                reg = <0x0 0x80000000 0 0x80000000>;
@@ -164,6 +170,24 @@
                };
        };
 
+       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-asrc = <&asrc1>;
@@ -411,6 +435,22 @@
        status = "okay";
 };
 
+&micfil {
+       assigned-clocks = <&scmi_clk IMX952_CLK_AUDIOPLL1_VCO>,
+                         <&scmi_clk IMX952_CLK_AUDIOPLL2_VCO>,
+                         <&scmi_clk IMX952_CLK_AUDIOPLL1>,
+                         <&scmi_clk IMX952_CLK_AUDIOPLL2>,
+                         <&scmi_clk IMX952_CLK_PDM>;
+       assigned-clock-parents = <0>, <0>, <0>, <0>,
+                               <&scmi_clk IMX952_CLK_AUDIOPLL1>;
+       assigned-clock-rates = <3932160000>, <3612672000>,
+                              <393216000>, <361267200>, <49152000>;
+       pinctrl-0 = <&pinctrl_pdm>;
+       pinctrl-1 = <&pinctrl_pdm_sleep>;
+       pinctrl-names = "default", "sleep";
+       status = "okay";
+};
+
 &sai1 {
        assigned-clocks = <&scmi_clk IMX952_CLK_AUDIOPLL1_VCO>,
                          <&scmi_clk IMX952_CLK_AUDIOPLL2_VCO>,
@@ -604,6 +644,20 @@
                >;
        };
 
+       pinctrl_pdm: pdmgrp {
+               fsl,pins = <
+                       IMX952_PAD_PDM_CLK__AONMIX_TOP_PDM_CLK                          0x31e
+                       IMX952_PAD_PDM_BIT_STREAM0__AONMIX_TOP_PDM_BIT_STREAM_0         0x31e
+               >;
+       };
+
+       pinctrl_pdm_sleep: pdmsleepgrp {
+               fsl,pins = <
+                       IMX952_PAD_PDM_CLK__AONMIX_TOP_GPIO1_IO_8               0x31e
+                       IMX952_PAD_PDM_BIT_STREAM0__AONMIX_TOP_GPIO1_IO_9       0x31e
+               >;
+       };
+
        pinctrl_ptn5110: ptn5110grp {
                fsl,pins = <
                        IMX952_PAD_GPIO_IO34__WAKEUPMIX_TOP_GPIO5_IO_14              0x31e