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器件型号：TLV320AIC3110 工具与软件：
我在上个月一直在尝试获取我设计的 HAT、它包含 TI TLV320AIC3110音频代码芯片、可在启动时识别、甚至可通过使用 modprobe 加载驱动程序。 我无法让 ALSA 看到芯片。 这是在 RPI5上
我确实尝试在网上搜索解决方案、但似乎什么都不起作用。
我正在使用 Ubuntu 24.04服务器、因为我需要 Ubuntu 帧和 wpe-mir kiosk 用于没有 HDMI 连接的专用物联网。 此设置不提供 VCdbg 我似乎无法获取任何调试信息。
如果有人能指出问题所在、我会将我的.dts 文件发布在这里。
/dts-v1/;
/plugin/;
/ {
compatible = "brcm,bcm2712";
/* "brcm,bcm2712", "brcm,bcm2711", "brcm,bcm2835"; */
/*
* Fragment@0: Enable the I2S (PCM) interface
*/
fragment@0 {
target = <&i2s>;
__overlay__ {
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&tlv320aic3110_pins>;
#sound-dai-cells = <0>;
brcm,enable-mclk = <1>; // Enable MCLK output
brcm,mclk-rate = <12288000>; // 12.288MHz MCLK rate
clock-frequency = <12288000>; // Master clock frequency
brcm,tx-channels = <2>; // Stereo output
brcm,rx-channels = <2>; // Stereo input
};
};
fragment@1 {
target-path = "/";
__overlay__ {
codec_1v8_reg: codec-1v8-reg {
compatible = "regulator-fixed";
regulator-name = "tlv320aic3104_1v8";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
regulator-always-on;
};
};
};
fragment@2 {
target = <&gpio>;
__overlay__ {
codec_rst: codec-rst {
brcm,pins = <13>;
brcm,function = <0>;
};
};
};
fragment@3 {
target = <&i2c1>;
__overlay__ {
#address-cells = <1>; /* Single cell for I2C address */
#size-cells = <0>; /* No size cells for I2C devices */
status = "okay";
tlv320aic3110: tlv320aic3110@18 {
compatible = "ti,tlv320aic3110", "ti,tlv320aic311x", "ti,tlv320aic3x";
reg = <0x18>;
#sound-dai-cells = <0>;
status = "okay";
/* DRVDD-supply = <&vdd_3v3_reg>; */
AVDD-supply = <&vdd_3v3_reg>;
DVDD-supply = <&codec_1v8_reg>;
HPVDD-supply = <&vdd_3v3_reg>;
IOVDD-supply = <&vdd_3v3_reg>;
SPRVDD-supply = <&vdd_5v0_reg>;
SPLVDD-supply = <&vdd_5v0_reg>;
clocks = <&mclk_external>;
mclk-frequency = <12288000>;
gpio-controller;
resets = <&gpio_reset>; /* active-high GPIO4_13 */
reset-gpios = <&gpio 13 0>; /* GPIO 13 as active high */
// Debug properties
debug;
linux,debug;
};
};
};
fragment@4 {
target-path = "/";
__overlay__ {
gpio_reset: gpio-reset {
compatible = "gpio-reset";
reset-gpios = <&gpio 13 0>; /* GPIO 13 active high */
#reset-cells = <0>;
reset-delay-us = <10000>;
status = "okay";
};
};
};
fragment@5 {
target = <&sound>;
__overlay__ {
compatible = "simple-audio-card";
simple-audio-card,name = "TLV320AIC3110";
simple-audio-card,widgets =
"Microphone", "Mic Jack",
"Speaker", "Speaker Left",
"Speaker", "Speaker Right";
simple-audio-card,routing =
"Speaker Left", "SPL",
"Speaker Right", "SPR",
"MIC1LP", "Mic Jack",
"MIC1LM", "Mic Jack";
status = "okay";
simple-audio-card,dai-link {
/* I2S format settings */
format = "i2s";
bitclock-master = <&codec_dai>;
frame-master = <&codec_dai>;
/* DAI link format */
dai-tdm-slot-num = <2>; // Stereo
dai-tdm-slot-width = <32>; // 32 bits per sample
cpu_dai: cpu {
sound-dai = <&bcm2835_i2s>;
dai-tdm-slot-num = <2>;
dai-tdm-slot-width = <32>;
};
codec_dai: codec {
sound-dai = <&tlv320aic3110>;
/* Clock settings */
system-clock-frequency = <12288000>; // 12.288MHz MCLK
system-clock-direction-out; // MCLK is input to codec
/* Format settings */
frame-inversion; // Frame sync polarity
bitclock-inversion; // Clock polarity
};
};
};
};
fragment@6 {
target-path = "/";
__overlay__ {
mclk_external: mclk_external {
compatible = "fixed-clock";
#clock-cells = <0>;
clock-frequency = <12288000>; // 12.288 MHz
};
};
};
fragment@7 {
target = <&gpio>;
__overlay__ {
tlv320aic3110_pins: tlv320aic3110_pins {
brcm,pins = <18 19 20 21>; // PCM_CLK, PCM_FS, PCM_DIN, PCM_DOUT
brcm,function = <4>; // ALT0 for I2S function
brcm,pull = <0>; // No pull-up/down
};
};
};
};
如有任何帮助、将不胜感激。 我还可以提供 PCB 原理图
