[问答]

怎样将RT5640替换成ES8396音频芯片呢

问答对人有帮助，内容完整，我也想知道答案 0 怎样将RT5640替换成ES8396音频芯片呢？如何让RT5640和ES8396在硬件上兼容呢？ 0
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答案对人有帮助，有参考价值 0 Platform: ROCKCHIP Chip: RK3288 OS: Android7.1.2 Kernel: 4.4.143 背景：之前平台用的RT5640, 由于此IC将要停产,所以需要替换为ES8396，RT5640和ES8396在硬件上兼容,只是芯片换了。音频开发指南一个声卡包含cpu_dai, codec_dai, 以及dai_link组成，分别对应cpu dai的dirver，比如I2S driver, spdif driver；codec driver，比如rt5640 codec driver；dai_link driver，也就是machine driver，比如sound/soc/rockchip/rockchip_rt5640.c。 4.4的内核中支持两种方式创建声卡，一种是通用的simple-card framework，一种是传统的编写自定义的machine driver来创建硬件原理图数据走I2S0通道控制走I2C2通道输出走HPLOUT/HPROUT SPKROUTP/SPKLOUTP 打开对应的宏 /kernel/arch/arm/configs/rockchip_defconfig +CONFIG_SND_SOC_ES8396=y 修改dts文件 /kernel/arch/arm/boot/dts/rk3288-android.dtsi 原本的是rt5640，修改后的是es8396 +#if 0 + hdmi_analog_sound: hdmi-analog-sound { + status = "okay"; + compatible = "rockchip,rk3288-hdmi-analog", + "rockchip,rk3368-hdmi-analog"; + rockchip,model = "rockchip,rt5640-codec"; + rockchip,cpu = <&i2s>; + rockchip,codec = <&rt5640>, <&hdmi>; + rockchip,widgets = + "Microphone", "Microphone Jack", + "Headphone", "Headphone Jack"; + rockchip,routing = + "MIC1", "Microphone Jack", + "MIC2", "Microphone Jack", + "Microphone Jack", "micbias1", + "Headphone Jack", "HPOL", + "Headphone Jack", "HPOR"; + }; +#else + hdmi_analog_sound: hdmi-analog-sound { + status = "okay"; + compatible = "rockchip,rk3288-hdmi-analog", + "rockchip,rk3368-hdmi-analog"; + rockchip,model = "rockchip,es8396-codec"; + rockchip,cpu = <&i2s>; + rockchip,codec = <&es8396>, <&hdmi>; + rockchip,widgets = + "Microphone", "Microphone Jack", + "Line", "Microphone Headset", + "Headphone", "Headphone Jack"; + rockchip,routing = + "MIC", "Microphone Jack", + "DMIC", "Microphone Headset", + "Headphone Jack", "LOUTP", + "Headphone Jack", "ROUTN"; + }; +#endif /kernel/arch/arm/boot/dts/rk3288-evb.dtsi +#if 0 + sound: sound { + status = "disabled"; + compatible = "simple-audio-card"; + simple-audio-card,format = "i2s"; + simple-audio-card,name = "rockchip,rt5640-codec"; + simple-audio-card,mclk-fs = <512>; + simple-audio-card,widgets = + "Microphone", "Microphone Jack", + "Headphone", "Headphone Jack"; + simple-audio-card,routing = + "MIC1", "Microphone Jack", + "MIC2", "Microphone Jack", + "Microphone Jack", "micbias1", + "Headphone Jack", "HPOL", + "Headphone Jack", "HPOR"; + + simple-audio-card,dai-link@0 { + format = "i2s"; + cpu { + sound-dai = <&i2s>; + }; + + codec { + sound-dai = <&rt5640>; + }; }; + + simple-audio-card,dai-link@1 { + format = "i2s"; + cpu { + sound-dai = <&i2s>; + }; + + codec { + sound-dai = <&hdmi>; + }; }; + } +#else + es8396-sound { + status = "okay"; + compatible = "simple-audio-card"; + simple-audio-card,format = "i2s"; + simple-audio-card,name = "rockchip,es8396-codec"; + simple-audio-card,mclk-fs = <256>; + simple-audio-card,widgets = + "Microphone", "Microphone Jack", + "Line", "Microphone Headset", + "Headphone", "Headphone Jack"; + + simple-audio-card,routing = + "MIC", "Microphone Jack", + "DMIC", "Microphone Headset", + "Headphone Jack", "LOUTP", + "Headphone Jack", "ROUTN"; + + simple-audio-card,dai-link@0 { + format = "i2s"; + cpu { + sound-dai = <&i2s>; + }; + + codec { + sound-dai = <&es8396>; + }; }; + simple-audio-card,dai-link@1 { + format = "i2s"; + cpu { + sound-dai = <&i2s>; + }; + + codec { + sound-dai = <&hdmi>; + }; }; + }; +#endif &i2c2 { status = "okay"; + /i2c-scl-rising-time-ns = <460>; + i2c-scl-falling-time-ns = <15>;/ +#if 0 rt5640: rt5640@1c { #sound-dai-cells = <0>; compatible = "realtek,rt5640"; @@ -307,8 +351,24 @@ pinctrl-names = "default"; pinctrl-0 = <&i2s0_mclk>; }; +#else + es8396: es8396@10 { + status = "okay"; + #sound-dai-cells = <0>; + compatible = "es8396"; + reg = <0x10>; + clocks = <&cru SCLK_I2S0_OUT>; + clock-names = "mclk"; + spk-con-gpio = <&gpio6 RK_PA7 GPIO_ACTIVE_HIGH>; + //lineout-con-gpio = <&gpio6 RK_PA7 GPIO_ACTIVE_HIGH> + pinctrl-names = "default"; + pinctrl-0 = <&i2s0_mclk>; + }; + +#endif }; + 编译烧录确定声卡注册成功：cat /proc/asound/cards 开机日志现象：播放音乐：hp出声正常，但是喇叭不出声，用i2ctransfer按下列配置寄存器来配置，喇叭能出声 Z20:/data # ./i2ctransfer -f -y 2 w2@0x10 0x75 0x41 Z20:/data # ./i2ctransfer -f -y 2 w2@0x10 0x1a 0x00 Z20:/data # ./i2ctransfer -f -y 2 w2@0x10 0x66 0x00 Z20:/data # ./i2ctransfer -f -y 2 w2@0x10 0x26 0x99 Z20:/data # ./i2ctransfer -f -y 2 w2@0x10 0x08 0x00 Z20:/data # ./i2ctransfer -f -y 2 w2@0x10 0x3a 0x65 Z20:/data # ./i2ctransfer -f -y 2 w2@0x10 0x6e 0x00 Z20:/data # ./i2ctransfer -f -y 2 w2@0x10 0x3a 0x21 Z20:/data # ./i2ctransfer -f -y 2 w2@0x10 0x3c 0x13 Z20:/data # ./i2ctransfer -f -y 2 w2@0x10 0x3d 0x10 Z20:/data # ./i2ctransfer -f -y 2 w2@0x10 0x26 0x88 Z20:/data # ./i2ctransfer -f -y 2 w2@0x10 0x3b 0xff 将此配置写入/kernel/sound/soc/codecs/es8396.c的es8396_pcm_startup函数中 + //use SPK + snd_soc_write(tron_codec, 0x75, 0x41); + snd_soc_write(tron_codec, 0x1A, 0x00); + snd_soc_write(tron_codec, 0x66, 0x00); + snd_soc_write(tron_codec, 0x26, 0x99); + snd_soc_write(tron_codec, 0x08, 0x00); + snd_soc_write(tron_codec, 0x3A, 0x65); + snd_soc_write(tron_codec, 0x6E, 0x00); + snd_soc_write(tron_codec, 0x3A, 0x21); + snd_soc_write(tron_codec, 0x3C, 0x13); + snd_soc_write(tron_codec, 0x3D, 0x10); + snd_soc_write(tron_codec, 0x26, 0x88); + snd_soc_write(tron_codec, 0x3B, 0xff); return 0; } 最后编译烧录，喇叭正常声卡播放状态：cat proc/asound/card0/pcm0p/sub0/status 声卡配置信息：cat proc/asound/card0/pcm0p/sub0/hw_params

2022-2-10 13:38:04 评论举报张荣