github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-09-25 17:42:03 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

arm64: dts: imx91-9x9-qsb: Add PDM microphone sound card support

Browse Source 
Add PDM microphone 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: Chancel Liu <chancel.liu@nxp.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
This commit is contained in:
Chancel Liu 2026-07-13 11:22:48 +09:00 committed by Frank Li
parent de6ed1fd9b
commit 25f7d6026e
1 changed files with 44 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

44
arch/arm64/boot/dts/freescale/imx91-9x9-qsb.dts
View File

@ -42,6 +42,18 @@ codec_ep: endpoint {
};
};
dmic: dmic {
compatible = "dmic-codec";
#sound-dai-cells = <0>;
num-channels = <4>;
port {
dmic_ep: endpoint {
remote-endpoint = <&micfil_ep>;
};
};
};
can_mux: mux-controller-0 {
compatible = "gpio-mux";
#mux-control-cells = <0>;
@ -123,6 +135,12 @@ linux,cma {
};
};
sound-micfil {
compatible = "audio-graph-card2";
label = "micfil-audio";
links = <&micfil_port>;
};
sound-wm8524 {
compatible = "audio-graph-card2";
label = "wm8524-audio";
@ -202,6 +220,14 @@ MX91_PAD_CCM_CLKO1__GPIO3_IO26 0x31e
>;
};
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_reg_usdhc2_vmmc: regusdhc2vmmcgrp {
fsl,pins = <
MX91_PAD_SD2_RESET_B__GPIO3_IO7 0x31e
@ -464,6 +490,24 @@ &lpuart1 {
status = "okay";
};
&micfil {
#sound-dai-cells = <0>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_pdm>, <&pdm_fun>;
assigned-clocks = <&clk IMX93_CLK_PDM>;
assigned-clock-parents = <&clk IMX93_CLK_AUDIO_PLL>;
assigned-clock-rates = <49152000>;
status = "okay";
micfil_port: port {
capture-only;
micfil_ep: endpoint {
remote-endpoint = <&dmic_ep>;
};
};
};
&sai1 {
#sound-dai-cells = <0>;
pinctrl-names = "default";