{"id":814,"date":"2022-01-22T15:41:08","date_gmt":"2022-01-22T07:41:08","guid":{"rendered":"https:\/\/www.sunjw.cn\/?p=814"},"modified":"2022-01-22T15:41:08","modified_gmt":"2022-01-22T07:41:08","slug":"linuxrv1126-multi-pdm-mic-and-ref-input","status":"publish","type":"post","link":"https:\/\/www.sunjw.cn\/index.php\/2022\/01\/22\/linuxrv1126-multi-pdm-mic-and-ref-input\/","title":{"rendered":"[Linux]RV1126 \u591apdm mic + \u56de\u91c7\u8f93\u5165\u914d\u7f6e"},"content":{"rendered":"<div>\u7531\u4e8eRV1126 kernel\u9a71\u52a8\u5df2\u7ecf\u5305\u542b\u591a\u6570\u5b57mic\u53ca\u5404\u79cdi2s\u8f93\u5165\uff0c\u56e0\u6b64\u53ea\u9700\u8981\u9488\u5bf9dts\u8fdb\u884c\u914d\u7f6e\u3002<\/div>\n<div>\u5982\u679c\u662f\u4ec5\u4ec5\u9700\u89818mic pdm\uff0c\u5219\u4fee\u6539\u58f0\u5361\u4f7f\u7528pdm array\u5c31\u884c\u3002<\/div>\n<div>\u540c\u65f6\u9700\u8981pdm\u4e3aokay\u53ca\u8bbe\u5b9a\u5bf9\u5e94\u7684pin\uff08\u901a\u9053\u6570\uff09\uff0c\u9ed8\u8ba4\u542f\u75283pin\uff086\u58f0\u9053\uff09\u3002<\/div>\n<div>\u5982\u679c\u662f\u9700\u8981\u591amic+2 \u8defi2s\u56de\u91c7\u8f93\u5165\uff0c\u6b64\u65f6\u9700\u8981\u6309\u7167rk\u6587\u6863\u4f7f\u7528multi dais(\u542f\u52a8multi dais\u53ef\u80fd\u56de\u7f16\u8bd1\u51fa\u9519\uff0c\u9700\u8981\u8054\u7cfbrk\u63d0\u4f9bpatch)\uff0c\u6211\u7684\u56de\u91c7\u4f7f\u7528\u7684\u662fES7243E\uff0c\u5355\u82af\u7247\u53ef\u4ee5\u540c\u65f6\u91c7\u4e24\u4e2a\u58f0\u9053\uff0c\u6ee1\u8db3\u8981\u6c42\u3002<\/div>\n<div>dts\u914d\u7f6e\u5982\u4e0b\uff1a<\/div>\n<div>ip_dais: ip-dais {<\/div>\n<div>status = &#8220;okay&#8221;;<\/div>\n<div>compatible = &#8220;rockchip,rv1126-multi-dais&#8221;, &#8220;rockchip,multi-dais&#8221;;<\/div>\n<div>#sound-dai-cells = &lt;0&gt;;<\/div>\n<div>dais = &lt;&amp;i2s2_2ch&gt;, &lt;&amp;pdm&gt;;<\/div>\n<div>capture,channel-mapping = &lt;2 6&gt;; #\u53ef\u4ee5\u8c03\u6574Mic\u4e0e\u56de\u91c7\u7684\u987a\u5e8f\u53ca\u901a\u9053\u6570<\/div>\n<div>playback,channel-mapping = &lt;0 0&gt;;<\/div>\n<div>};<\/div>\n<div>my_sound: my-sound {<\/div>\n<div>status = &#8220;okay&#8221;;<\/div>\n<div>compatible = &#8220;simple-audio-card&#8221;;<\/div>\n<div>simple-audio-card,name = &#8220;rockchip,my_sound&#8221;;<\/div>\n<div>simple-audio-card,format = &#8220;i2s&#8221;;<\/div>\n<div>simple-audio-card,mclk-fs = &lt;256&gt;;<\/div>\n<div>simple-audio-card,cpu {<\/div>\n<div>sound-dai = &lt;&amp;ip_dais&gt;;<\/div>\n<div>};<\/div>\n<div>simple-audio-card,codec {<\/div>\n<div>sound-dai = &lt;&amp;es7243e&gt;;<\/div>\n<div>};<\/div>\n<div>};<\/div>\n<div>\u6b63\u5e38\u914d\u7f6e\u91cd\u542f\u4e4b\u540e\uff0c\u6267\u884carecord -L\u4f1a\u663e\u793a\u6709\u4e00\u4e2a\u53eb\u201cmy_sound\u201d\u7684\u58f0\u5361\u8bbe\u5907\uff0c\u8bf4\u660e\u914d\u7f6e\u6210\u529f\u3002<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u7531\u4e8eRV1126 kernel\u9a71\u52a8\u5df2\u7ecf\u5305\u542b\u591a\u6570\u5b57mic\u53ca\u5404\u79cdi2s\u8f93\u5165\uff0c\u56e0\u6b64\u53ea\u9700\u8981\u9488\u5bf9dts\u8fdb\u884c\u914d\u7f6e\u3002 \u5982\u679c\u662f [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[5],"tags":[],"_links":{"self":[{"href":"https:\/\/www.sunjw.cn\/index.php\/wp-json\/wp\/v2\/posts\/814"}],"collection":[{"href":"https:\/\/www.sunjw.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.sunjw.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.sunjw.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sunjw.cn\/index.php\/wp-json\/wp\/v2\/comments?post=814"}],"version-history":[{"count":1,"href":"https:\/\/www.sunjw.cn\/index.php\/wp-json\/wp\/v2\/posts\/814\/revisions"}],"predecessor-version":[{"id":815,"href":"https:\/\/www.sunjw.cn\/index.php\/wp-json\/wp\/v2\/posts\/814\/revisions\/815"}],"wp:attachment":[{"href":"https:\/\/www.sunjw.cn\/index.php\/wp-json\/wp\/v2\/media?parent=814"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.sunjw.cn\/index.php\/wp-json\/wp\/v2\/categories?post=814"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.sunjw.cn\/index.php\/wp-json\/wp\/v2\/tags?post=814"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}