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@xxxxxxx>
---
changes in v2:
- add newline between properties and child node
arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi | 36 +++++++++++++++++++
1 file changed, 36 insertions(+)
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi
index b53104ed8919..9b39458f3fa5 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi
@@ -151,6 +151,20 @@ simple-audio-card,codec {
clocks = <&clk IMX8MM_CLK_SAI3_ROOT>;
};
};
+
+ sound-micfil {
+ compatible = "fsl,imx-audio-card";
+ model = "micfil-audio";
+
+ pri-dai-link {
+ link-name = "micfil hifi";
+ format = "i2s";
+
+ cpu {
+ sound-dai = <&micfil>;
+ };
+ };
+ };
};
&A53_0 {
@@ -434,6 +448,16 @@ &lcdif {
status = "okay";
};
+&micfil {
+ #sound-dai-cells = <0>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_pdm>;
+ assigned-clocks = <&clk IMX8MM_CLK_PDM>;
+ assigned-clock-parents = <&clk IMX8MM_AUDIO_PLL1_OUT>;
+ assigned-clock-rates = <196608000>;
+ status = "okay";
+};
+
&mipi_csi {
status = "okay";
@@ -636,6 +660,18 @@ MX8MM_IOMUXC_GPIO1_IO05_GPIO1_IO5 0x41
>;
};
+ pinctrl_pdm: pdmgrp {
+ fsl,pins = <
+ MX8MM_IOMUXC_SAI5_MCLK_SAI5_MCLK 0xd6
+ MX8MM_IOMUXC_SAI5_RXC_PDM_CLK 0xd6
+ MX8MM_IOMUXC_SAI5_RXFS_SAI5_RX_SYNC 0xd6
+ MX8MM_IOMUXC_SAI5_RXD0_PDM_DATA0 0xd6
+ MX8MM_IOMUXC_SAI5_RXD1_PDM_DATA1 0xd6
+ MX8MM_IOMUXC_SAI5_RXD2_PDM_DATA2 0xd6
+ MX8MM_IOMUXC_SAI5_RXD3_PDM_DATA3 0xd6
+ >;
+ };
+
pinctrl_pmic: pmicirqgrp {
fsl,pins = <
MX8MM_IOMUXC_GPIO1_IO03_GPIO1_IO3 0x141
--
2.34.1
