arm64: dts: imx91-11x11-evk: Add PDM microphone sound card support

Add PDM micphone sound card support.

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

Signed-off-by: Chancel Liu <chancel.liu@nxp.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm64/boot/dts/freescale/imx91-11x11-evk.dts b/arch/arm64/boot/dts/freescale/imx91-11x11-evk.dts
index 6b26ecfd06c997ef408bed65e92c9891c8482f1e..b0a295993dbae4fe69b8a0468fd92ce6811f832a 100644 (file)
--- a/arch/arm64/boot/dts/freescale/imx91-11x11-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx91-11x11-evk.dts
@@ -117,6 +117,20 @@
                        dai-tdm-slot-width = <16>;
                };
        };
+
+       sound-micfil {
+               compatible = "fsl,imx-audio-card";
+               model = "micfil-audio";
+
+               pri-dai-link {
+                       link-name = "micfil hifi";
+                       format = "i2s";
+
+                       cpu {
+                               sound-dai = <&micfil>;
+                       };
+               };
+       };
 };
 
 &adc1 {
@@ -412,6 +426,16 @@
        };
 };
 
+&micfil {
+       pinctrl-names = "default", "sleep";
+       pinctrl-0 = <&pinctrl_pdm>;
+       pinctrl-1 = <&pinctrl_pdm_sleep>;
+       assigned-clocks = <&clk IMX93_CLK_PDM>;
+       assigned-clock-parents = <&clk IMX93_CLK_AUDIO_PLL>;
+       assigned-clock-rates = <49152000>;
+       status = "okay";
+};
+
 &sai1 {
        pinctrl-names = "default", "sleep";
        pinctrl-0 = <&pinctrl_sai1>;
@@ -590,6 +614,22 @@
                >;
        };
 
+       pinctrl_pdm: pdmgrp {
+               fsl,pins = <
+                       MX91_PAD_PDM_CLK__PDM_CLK                       0x31e
+                       MX91_PAD_PDM_BIT_STREAM0__PDM_BIT_STREAM0       0x31e
+                       MX91_PAD_PDM_BIT_STREAM1__PDM_BIT_STREAM1       0x31e
+               >;
+       };
+
+       pinctrl_pdm_sleep: pdmsleepgrp {
+               fsl,pins = <
+                       MX91_PAD_PDM_CLK__GPIO1_IO8                     0x51e
+                       MX91_PAD_PDM_BIT_STREAM0__GPIO1_IO9             0x51e
+                       MX91_PAD_PDM_BIT_STREAM1__GPIO1_IO10            0x51e
+               >;
+       };
+
        pinctrl_sai1: sai1grp {
                fsl,pins = <
                        MX91_PAD_SAI1_TXC__SAI1_TX_BCLK                 0x31e