Luckfox Pico Ultra W怎样使用I2S设备

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  Posts: 1

  Joined: 2025-08-14 10:09

  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

  Code: Select all

  // 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";
  };

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