Luckfox Pico Ultra W怎样使用I2S设备
Posted: 2025-08-14 10:21
我现在想用I2S0来驱动INMP441，我修改了rv1106g-luckfox-pico-ultra-w.dts文件，编译通过后执行arecord -l，无法找到INMP441，以下是我的设备树文件，我如果想实现INMP441的使用，我应该怎样修改
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// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
* Copyright (c) 2022 Rockchip Electronics Co., Ltd.
*/
/dts-v1/;
#include "rv1106.dtsi"
#include "rv1106-luckfox-pico-ultra-ipc.dtsi"
#include <dt-bindings/input/input.h>
#include <dt-bindings/display/media-bus-format.h>
/ {
model = "Luckfox Pico Ultra W";
compatible = "rockchip,rv1103g-38x38-ipc-v10", "rockchip,rv1106g3";
restart-poweroff {
compatible = "restart-poweroff";
};
sdio_pwrseq: sdio-pwrseq {
compatible = "mmc-pwrseq-simple";
pinctrl-names = "default";
reset-gpios = <&gpio1 RK_PA2 GPIO_ACTIVE_LOW>;
};
wireless_bluetooth: wireless-bluetooth {
compatible = "bluetooth-platdata";
uart_rts_gpios = <&gpio0 RK_PA5 GPIO_ACTIVE_LOW>;
pinctrl-names = "default", "rts_gpio";
pinctrl-0 = <&uart1m0_rtsn>;
pinctrl-1 = <&uart1_gpios>;
BT,wake_gpio = <&gpio0 RK_PA2 GPIO_ACTIVE_HIGH>;
BT,wake_host_irq = <&gpio1 RK_PA2 GPIO_ACTIVE_HIGH>;
status = "okay";
};
/* 定义 INMP441 音频链路 */
inmp441_sound: inmp441-sound {
compatible = "simple-audio-card";
simple-audio-card,name = "INMP441-I2S";
simple-audio-card,format = "i2s";
simple-audio-card,mclk-fs = <256>;
simple-audio-card,bitclock-master = <&i2s_cpu>;
simple-audio-card,frame-master = <&i2s_cpu>;
i2s_cpu: simple-audio-card,cpu {
sound-dai = <&i2s0_8ch>;
};
simple-audio-card,codec {
sound-dai = <&inmp441>;
};
};
inmp441: inmp441 {
compatible = "simple-audio-codec";
#sound-dai-cells = <0>;
status = "okay";
};
};
/**********CRU**********/
//&cru {
// assigned-clocks =
// <&cru PLL_GPLL>, <&cru PLL_CPLL>,
// <&cru ARMCLK>,
// <&cru ACLK_PERI_ROOT>, <&cru HCLK_PERI_ROOT>,
// <&cru PCLK_PERI_ROOT>, <&cru ACLK_BUS_ROOT>,
// <&cru PCLK_TOP_ROOT>, <&cru PCLK_PMU_ROOT>,
// <&cru HCLK_PMU_ROOT>, <&cru CLK_500M_SRC>;
// assigned-clock-rates =
// <1188000000>, <700000000>,
// <1104000000>,
// <400000000>, <200000000>,
// <100000000>, <300000000>,
// <100000000>, <100000000>,
// <200000000>, <700000000>;
//};
/**********NPU**********/
//&npu {
// assigned-clock-rates = <700000000>;
//};
/**********EMMC**********/
&emmc {
bus-width = <8>;
cap-mmc-highspeed;
non-removable;
// mmc-hs200-1_8v;
rockchip,default-sample-phase = <90>;
no-sdio;
no-sd;
memory-region-ecsd = <&mmc_ecsd>;
post-power-on-delay-ms = <0>;
status = "okay";
};
&fiq_debugger {
rockchip,irq-mode-enable = <1>;
status = "okay";
};
/**********SDIO-WIFI**********/
&sdmmc {
max-frequency = <50000000>;
bus-width = <4>;
cap-sd-highspeed;
cap-sdio-irq;
keep-power-in-suspend;
non-removable;
rockchip,default-sample-phase = <90>;
// no-sd;
// no-mmc;
supports-sdio;
mmc-pwrseq = <&sdio_pwrseq>;
pinctrl-names = "default";
pinctrl-0 = <&sdmmc0_clk &sdmmc0_cmd &sdmmc0_bus4 &sdmmc0_det>;
status = "okay";
};
&pinctrl{
sdmmc0{
sdmmc0_det: sdmmc0-det {
rockchip,pins =
/* sdmmc0_det */
<3 RK_PA1 1 &pcfg_pull_down>;
};
};
};
/**********ETH**********/
&gmac {
status = "okay";
};
/**********USB**********/
&usbdrd_dwc3 {
status = "okay";
dr_mode = "peripheral";
//dr_mode = "host";
};
/**********RTC**********/
&rtc {
status = "okay";
};
/**********BT**********/
&uart1 {
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&uart1m0_xfer &uart1m0_ctsn>;
};
&pinctrl {
wireless-bluetooth {
uart1_gpios: uart1-gpios {
rockchip,pins = <0 RK_PA5 RK_FUNC_GPIO &pcfg_pull_none>;
};
};
};
/**********SPI**********/
&spi0 {
status = "disabled";
spidev@0 {
spi-max-frequency = <50000000>;
};
};
/**********RGB**********/
&panel {
status = "disabled";
};
&rgb {
status = "disabled";
};
&rgb_in_vop {
status = "disabled";
};
&route_rgb {
status = "disabled";
};
&vop {
status = "disabled";
};
/**********I2S**********/
&i2s0_8ch {
#sound-dai-cells = <0>;
pinctrl-names = "default";
pinctrl-0 = <&i2s0_pins>;
assigned-clocks = <&cru MCLK_I2S0_8CH_TX>;
assigned-clock-rates = <12288000>;
status = "okay";
};
&pinctrl {
i2s0 {
i2s0_pins: i2s0-pins {
rockchip,pins =
<2 RK_PA0 1 &pcfg_pull_none>, /* I2S0_SCLK */
<2 RK_PA1 1 &pcfg_pull_none>, /* I2S0_LRCK_TX */
<2 RK_PA4 1 &pcfg_pull_none>; /* I2S0_SDIO0 (DIN) */
};
};
};
&acodec {
status = "disabled";
};