On Tue, Sep 10, 2024 at 03:19:32PM +0800, Shengjiu Wang wrote:
> 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@xxxxxxx>
> ---
> .../boot/dts/freescale/imx93-9x9-qsb.dts | 35 +++++++++++++++++++
> 1 file changed, 35 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/freescale/imx93-9x9-qsb.dts b/arch/arm64/boot/dts/freescale/imx93-9x9-qsb.dts
> index d213a5343803..1340f5462d11 100644
> --- a/arch/arm64/boot/dts/freescale/imx93-9x9-qsb.dts
> +++ b/arch/arm64/boot/dts/freescale/imx93-9x9-qsb.dts
> @@ -122,6 +122,18 @@ simple-audio-card,codec {
> };
> };
>
> + 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";
> @@ -266,6 +278,12 @@ pcal6524: gpio@22 {
> pinctrl-names = "default";
> pinctrl-0 = <&pinctrl_pcal6524>;
>
> + mic-can-sel-hog {
> + gpio-hog;
> + gpios = <17 GPIO_ACTIVE_HIGH>;
> + output-low;
> + };
> +
sort nodename, it should after exp-sel-hog.
> exp-sel-hog {
> gpio-hog;
> gpios = <22 GPIO_ACTIVE_HIGH>;
> @@ -355,6 +373,15 @@ &lpuart1 { /* console */
> 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";
> };
> @@ -535,6 +562,14 @@ MX93_PAD_SD1_STROBE__USDHC1_STROBE 0x15fe
> >;
> };
>
> + 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
> + >;
> + };
> +
Does pdmgrp is ordered? look like it should be ahead of USDHC
Frank
> pinctrl_reg_usdhc2_vmmc: regusdhc2vmmcgrp {
> fsl,pins = <
> MX93_PAD_SD2_RESET_B__GPIO3_IO07 0x31e
> --
> 2.34.1
>
