树莓派3android教程a20音频驱动使用说明

RevisionChangescomparedtopreviousA20音频驱动使用说明.......................................................................................................... Revisi........................................................................ 3-1.音频模块 ..4-2.代码位置 ..4-3.编译方式 ..4-4.配置项说 ..6-Audio- ..6- ..6- ..6- ..7- ..7- ..8-5.Dec................................................. 9-音频模块audio-codec,代码位置lichee\linux-编译方式

图 音频驱动代码位打来配置方式，路径如下图2-6。对应的方式如图6所示，分别对应编译audio-codec,,hdcp,dpf,i2spcm模块。例如：只是需要audio-codec，选择第一个即可，默认的情况全部编译到内核。图配置项说 = =port:PI3<1><default><default><0>hp_ue_ued：控制外部ue 电路的使能，有硬件电路时候再选择，默认的时候没有这电路，不使用audio_pa_ctrlPA使能控制，默认配置的是PH15，输出为低电平，驱动里有对hp_mute：外mute电路的使[ = =0//为1，音频部分走HDCP，默认为0，音频 = = = = =over_sample_rate= = =pcm_sync_period= = = = = = = = = = = = =i2s2_para是专门为HDCP使用的，默认配置就可以，不需要任何改动。 还是HDCP，在 = = Spdif默认不配置到内核里，输出口配置PB13，不需要改 = = = = = =over_sample_rate= = =pcm_sync_period= = = = = = = = = = = = =主要项i2s_used：默认情况I2S不使i2s_select：为1配置为I2S，为0配置为PCM，默认配置为 = = = = = =over_sample_rate= = =pcm_sync_period= = = = = = = = = = = = =主要项pcm_select：为1配置为pcm，为0配置为i2s，默认配置为ThisistheoriginalworkandcopyrightedpropertyofAllwinnerTechnology(“Allwinner”).ReproductioninwholeorinpartmustobtainthewrittenapprovalofAllwinnerandgiveclearacknowledgementtothecopyrightowner.TheinformationfurnishedbyAllwinnerisbelievedtobeaccurateandreliable.Allwinnerreservestherighttomakechangesincircuitdesignand/orspecificationsatanytimewithoutnotice.Allwinnerdoesnotassumeanyresponsibilityandliabilityforitsuse.Norforanyinfringementsofpatentsorotherrightsofthethirdpartieswhiayresultfromitsuse.NolicenseisgrantedbyimplicationorotherwiseunderanypatentorpatentrightsofAllwinner.Thisdatasheet