The baseboard has a connector for a pulse density microphone. This is connected via the micfil interface and uses the DMIC audio codec with the simple-audio-card. Signed-off-by: Adam Ford <aford173@xxxxxxxxx> diff --git a/arch/arm64/boot/dts/freescale/imx8mp-beacon-kit.dts b/arch/arm64/boot/dts/freescale/imx8mp-beacon-kit.dts index acd265d8b58e..ee64c6ffb551 100644 --- a/arch/arm64/boot/dts/freescale/imx8mp-beacon-kit.dts +++ b/arch/arm64/boot/dts/freescale/imx8mp-beacon-kit.dts @@ -49,6 +49,12 @@ ss_ep: endpoint { }; }; + dmic_codec: dmic-codec { + compatible = "dmic-codec"; + num-channels = <1>; + #sound-dai-cells = <0>; + }; + gpio-keys { compatible = "gpio-keys"; autorepeat; @@ -147,6 +153,22 @@ reg_usb1_host_vbus: regulator-usb1-vbus { enable-active-high; }; + sound-dmic { + compatible = "simple-audio-card"; + simple-audio-card,name = "sound-pdm"; + simple-audio-card,format = "i2s"; + simple-audio-card,bitclock-master = <&dailink_master>; + simple-audio-card,frame-master = <&dailink_master>; + + dailink_master: simple-audio-card,cpu { + sound-dai = <&micfil>; + }; + + simple-audio-card,codec { + sound-dai = <&dmic_codec>; + }; + }; + sound-wm8962 { compatible = "simple-audio-card"; simple-audio-card,name = "wm8962"; @@ -174,6 +196,11 @@ simple-audio-card,codec { }; }; +&audio_blk_ctrl { + assigned-clocks = <&clk IMX8MP_AUDIO_PLL1>, <&clk IMX8MP_AUDIO_PLL2>; + assigned-clock-rates = <393216000>, <135475200>; +}; + &ecspi2 { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_ecspi2>; @@ -364,6 +391,15 @@ hd3ss3220_out_ep: endpoint { }; }; +&micfil { + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_pdm>; + assigned-clocks = <&clk IMX8MP_CLK_PDM>; + assigned-clock-parents = <&clk IMX8MP_AUDIO_PLL1_OUT>; + assigned-clock-rates = <49152000>; + status = "okay"; +}; + &pcie { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_pcie>; @@ -545,6 +581,13 @@ MX8MP_IOMUXC_SAI2_RXFS__GPIO4_IO21 0x10 /* PCIe_nRST */ >; }; + pinctrl_pdm: pdmgrp { + fsl,pins = < + MX8MP_IOMUXC_SAI5_RXC__AUDIOMIX_PDM_CLK 0xd6 + MX8MP_IOMUXC_SAI5_RXD0__AUDIOMIX_PDM_BIT_STREAM00 0xd6 + >; + }; + pinctrl_reg_usdhc2_vmmc: regusdhc2vmmcgrp { fsl,pins = < MX8MP_IOMUXC_SD2_RESET_B__GPIO2_IO19 0x40 -- 2.39.2