{"id":17594,"date":"2024-11-18T08:55:04","date_gmt":"2024-11-18T00:55:04","guid":{"rendered":"https:\/\/fwq.ai\/blog\/17594\/"},"modified":"2024-11-18T08:55:04","modified_gmt":"2024-11-18T00:55:04","slug":"%e6%8a%80%e6%9c%af%e5%88%86%e4%ba%ab%ef%bc%9alinux-dts%e7%9a%84%e5%ba%94%e7%94%a8%e5%8f%8a%e5%ae%9e%e8%b7%b5%e6%8c%87%e5%8d%97","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/17594\/","title":{"rendered":"\u6280\u672f\u5206\u4eab\uff1aLinux DTS\u7684\u5e94\u7528\u53ca\u5b9e\u8df5\u6307\u5357"},"content":{"rendered":"

\"\u6280\u672f\u5206\u4eab\uff1aLinux<\/p>\n

\u6280\u672f\u5206\u4eab\uff1aLinux DTS\u7684\u5e94\u7528\u53ca\u5b9e\u8df5\u6307\u5357<\/p>\n

\u968f\u7740Linux\u5728\u5d4c\u5165\u5f0f\u7cfb\u7edf\u4e2d\u7684\u5e7f\u6cdb\u5e94\u7528\uff0c\u8bbe\u5907\u6811\uff08Device Tree\uff09\u4f5c\u4e3a\u4e00\u79cd\u63cf\u8ff0\u786c\u4ef6\u8bbe\u5907\u4fe1\u606f\u548c\u8d44\u6e90\u5206\u914d\u7684\u5de5\u5177\u53d8\u5f97\u8d8a\u6765\u8d8a\u91cd\u8981\u3002\u5728Linux\u5185\u6838\u4e2d\uff0cDevice Tree\u6e90\u6587\u4ef6\u901a\u5e38\u88ab\u79f0\u4e3aDTS\uff08Device Tree Source\uff09\u6587\u4ef6\u3002\u672c\u6587\u5c06\u6df1\u5165\u63a2\u8ba8Linux DTS\u7684\u5e94\u7528\u53ca\u5b9e\u8df5\u6307\u5357\uff0c\u901a\u8fc7\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u5e2e\u52a9\u8bfb\u8005\u66f4\u597d\u5730\u7406\u89e3\u548c\u8fd0\u7528Device Tree\u3002<\/p>\n

\u4e00\u3001\u4ec0\u4e48\u662fDevice Tree\uff1f<\/p>\n

Device Tree\u662fLinux\u5185\u6838\u4e2d\u7528\u4e8e\u63cf\u8ff0\u786c\u4ef6\u5e73\u53f0\u4fe1\u606f\u7684\u4e00\u79cd\u6570\u636e\u7ed3\u6784\u683c\u5f0f\u3002\u5b83\u5c06\u786c\u4ef6\u8bbe\u5907\u53ca\u8d44\u6e90\u7684\u63cf\u8ff0\u4fe1\u606f\u4ece\u5185\u6838\u6e90\u4ee3\u7801\u4e2d\u5206\u79bb\u51fa\u6765\uff0c\u4ee5\u4e00\u79cd\u7c7b\u4f3c\u4e8e\u6811\u72b6\u7ed3\u6784\u7684\u6587\u672c\u6587\u4ef6\u7684\u5f62\u5f0f\u5b58\u5728\u3002\u5728Linux\u542f\u52a8\u65f6\uff0cBootloader\u4f1a\u52a0\u8f7dDevice Tree\u6587\u4ef6\u5230\u5185\u5b58\u4e2d\uff0c\u5e76\u4f20\u9012\u7ed9Linux\u5185\u6838\uff0c\u5185\u6838\u5728\u542f\u52a8\u65f6\u6839\u636eDevice Tree\u6587\u4ef6\u7684\u5185\u5bb9\u8fdb\u884c\u8bbe\u5907\u7684\u521d\u59cb\u5316\u548c\u8d44\u6e90\u7684\u5206\u914d\u3002<\/p>\n

\u4e8c\u3001Device Tree\u7684\u7ec4\u6210<\/p>\n

    \n
  1. \u8282\u70b9\uff08Node\uff09\uff1aDevice Tree\u4ee5\u8282\u70b9\u4e3a\u5355\u4f4d\u7ec4\u7ec7\u786c\u4ef6\u8bbe\u5907\u7684\u4fe1\u606f\uff0c\u5728Device Tree\u4e2d\uff0c\u6bcf\u4e2a\u8bbe\u5907\u90fd\u5bf9\u5e94\u4e00\u4e2a\u8282\u70b9\u3002\u6bcf\u4e2a\u8282\u70b9\u901a\u8fc7\u5173\u952e\u8bcd\u548c\u5c5e\u6027\u63cf\u8ff0\u8bbe\u5907\u7684\u7c7b\u578b\u3001\u5730\u5740\u3001\u4e2d\u65ad\u7b49\u4fe1\u606f\u3002<\/li>\n
  2. \u8282\u70b9\u5c5e\u6027\uff08Property\uff09\uff1a\u8282\u70b9\u5c5e\u6027\u53ef\u4ee5\u5305\u62ec\u8bbe\u5907\u7684\u5177\u4f53\u4fe1\u606f\uff0c\u4f8b\u5982\u8bbe\u5907\u7684\u5730\u5740\u3001\u4e2d\u65ad\u3001\u5bc4\u5b58\u5668\u5730\u5740\u7b49\u3002\u5c5e\u6027\u4ee5\u7684\u5f62\u5f0f\u5b58\u5728\uff0c\u901a\u8fc7\u8282\u70b9\u63cf\u8ff0\u8bbe\u5907\u7684\u5404\u79cd\u7279\u6027\u3002<\/li>\n
  3. include\u6307\u4ee4\uff1aDevice Tree\u6587\u4ef6\u4e2d\u53ef\u4ee5\u4f7f\u7528include\u6307\u4ee4\u5f15\u7528\u5176\u4ed6Device Tree\u6587\u4ef6\uff0c\u65b9\u4fbf\u7ec4\u7ec7\u548c\u91cd\u7528\u8bbe\u5907\u63cf\u8ff0\u4fe1\u606f\u3002<\/li>\n<\/ol>\n

    \u4e09\u3001\u5982\u4f55\u7f16\u5199Device Tree\u6587\u4ef6<\/p>\n

    \u63a5\u4e0b\u6765\u6211\u4eec\u901a\u8fc7\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\u6765\u5c55\u793a\u5982\u4f55\u7f16\u5199\u4e00\u4e2a\u7b80\u5355\u7684Device Tree\u6587\u4ef6\uff0c\u4ee5\u63cf\u8ff0\u4e00\u4e2aLED\u8bbe\u5907\u3002\u5047\u8bbeLED\u8fde\u63a5\u5728GPIO1_1\u5f15\u811a\u4e0a\uff0cGPIO1_1\u7684\u7269\u7406\u5730\u5740\u4e3a0x44\u3002<\/p>\n

    \u9996\u5148\uff0c\u521b\u5efa\u4e00\u4e2a\u65b0\u7684Device Tree\u6587\u4ef6led.dts\uff0c\u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n

    \/dts-v1\/;\n\n\/ {\n    compatible = \"my_led\";\n    led {\n        compatible = \"gpio-led\";\n        status = \"okay\";\n\n        gpios = ;\n        label = \"led_1\";\n    };\n};<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u5728\u8fd9\u4e2aDevice Tree\u6587\u4ef6\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2aLED\u8282\u70b9\uff0c\u8be5\u8282\u70b9\u5305\u62ecLED\u7684\u4e00\u4e9b\u57fa\u672c\u4fe1\u606f\uff0c\u4f8b\u5982LED\u6240\u8fde\u63a5\u7684GPIO\u5f15\u811a\u3001LED\u7684\u6807\u7b7e\u7b49\u3002<\/p>\n
    \u56db\u3001\u5982\u4f55\u7f16\u8bd1\u548c\u4f7f\u7528Device Tree\u6587\u4ef6<\/p>\n
    \u5728Linux\u5185\u6838\u7684\u6e90\u7801\u76ee\u5f55\u4e2d\uff0c\u901a\u5e38\u4f1a\u6709\u4e00\u4e2aarch\/arm\/boot\/dts\/\u76ee\u5f55\uff0c\u6211\u4eec\u53ef\u4ee5\u628a\u7f16\u5199\u597d\u7684Device Tree\u6587\u4ef6led.dts\u590d\u5236\u5230\u8be5\u76ee\u5f55\u4e0b\u3002<\/p>\n
    \u63a5\u4e0b\u6765\uff0c\u5728Linux\u5185\u6838\u6e90\u7801\u7684\u6839\u76ee\u5f55\u4e0b\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\u7f16\u8bd1Device Tree\u6587\u4ef6\uff1a<\/p>\n
    make dtbs<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u7f16\u8bd1\u5b8c\u6210\u540e\uff0c\u4f1a\u751f\u6210\u4e00\u4e2aled.dtb\u6587\u4ef6\uff0c\u8fd9\u4e2a\u6587\u4ef6\u5c31\u662f\u7f16\u8bd1\u540e\u7684\u4e8c\u8fdb\u5236Device Tree\u6587\u4ef6\u3002<\/p>\n
    \u5728\u542f\u52a8\u5f15\u5bfc\u8fc7\u7a0b\u4e2d\uff0cBootloader\u9700\u8981\u52a0\u8f7d\u8fd9\u4e2aled.dtb\u6587\u4ef6\uff0c\u5e76\u4f20\u9012\u7ed9\u5185\u6838\uff0c\u8ba9\u5185\u6838\u53ef\u4ee5\u6839\u636e\u6587\u4ef6\u4e2d\u63cf\u8ff0\u7684\u786c\u4ef6\u4fe1\u606f\u521d\u59cb\u5316LED\u8bbe\u5907\u3002<\/p>\n
    \u4e94\u3001\u5b9e\u8df5\u6307\u5357<\/p>\n
      \n
    1. \u7406\u89e3\u8bbe\u5907\u6811\u89c4\u8303\uff1a\u5728\u7f16\u5199Device Tree\u6587\u4ef6\u65f6\uff0c\u9700\u8981\u9075\u5faa\u8bbe\u5907\u6811\u89c4\u8303\uff0c\u4e86\u89e3\u8282\u70b9\u7684\u5404\u79cd\u5c5e\u6027\u548c\u5173\u952e\u8bcd\u7684\u542b\u4e49\uff0c\u4ee5\u786e\u4fdd\u63cf\u8ff0\u51c6\u786e\u3002<\/li>\n
    2. \u8c03\u8bd5\u548c\u9a8c\u8bc1\uff1a\u5728\u7f16\u5199Device Tree\u6587\u4ef6\u540e\uff0c\u53ef\u4ee5\u901a\u8fc7\u8bbe\u5907\u6811\u89e3\u91ca\u5668\uff08dtc\uff09\u5de5\u5177\u6765\u9a8c\u8bc1\u6587\u4ef6\u7684\u8bed\u6cd5\u662f\u5426\u6b63\u786e\u3002\u53ef\u4ee5\u4f7f\u7528\u8be5\u5de5\u5177\u901a\u8fc7\u53cd\u6c47\u7f16\u7684\u65b9\u5f0f\u67e5\u770bDevice Tree\u6587\u4ef6\u7684\u5185\u5bb9\u3002<\/li>\n
    3. \u7075\u6d3b\u914d\u7f6e\uff1aDevice Tree\u6587\u4ef6\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u786c\u4ef6\u5e73\u53f0\u7684\u53d8\u5316\u8fdb\u884c\u7075\u6d3b\u914d\u7f6e\u548c\u4fee\u6539\uff0c\u9002\u5e94\u4e0d\u540c\u786c\u4ef6\u8bbe\u5907\u7684\u9700\u6c42\u3002<\/li>\n<\/ol>\n
      \u901a\u8fc7\u4ee5\u4e0a\u5b9e\u8df5\u6307\u5357\u548c\u5177\u4f53\u4ee3\u7801\u793a\u4f8b\uff0c\u5e0c\u671b\u8bfb\u8005\u80fd\u66f4\u597d\u5730\u4e86\u89e3\u548c\u8fd0\u7528Linux DTS\uff0c\u7075\u6d3b\u914d\u7f6e\u548c\u7ba1\u7406\u786c\u4ef6\u8bbe\u5907\uff0c\u63d0\u5347\u5d4c\u5165\u5f0f\u7cfb\u7edf\u7684\u7a33\u5b9a\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002<\/p>\n
      \u4ee5\u4e0a\u5c31\u662f\u6280\u672f\u5206\u4eab\uff1aLinux DTS\u7684\u5e94\u7528\u53ca\u5b9e\u8df5\u6307\u5357\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
      \u6280\u672f\u5206\u4eab\uff1aLinux DTS\u7684\u5e94\u7528\u53ca\u5b9e\u8df5\u6307\u5357 \u968f\u7740Linux\u5728\u5d4c\u5165\u5f0f\u7cfb\u7edf\u4e2d\u7684\u5e7f\u6cdb\u5e94\u7528\uff0c\u8bbe\u5907\u6811\uff08Device Tree\uff09\u4f5c\u4e3a\u4e00\u79cd\u63cf\u8ff0\u786c\u4ef6\u8bbe\u5907\u4fe1\u606f\u548c\u8d44\u6e90\u5206\u914d\u7684\u5de5\u5177\u53d8\u5f97\u8d8a\u6765\u8d8a\u91cd\u8981\u3002\u5728Linux\u5185\u6838\u4e2d\uff0cDevice Tree\u6e90\u6587\u4ef6\u901a\u5e38\u88ab\u79f0\u4e3aDTS\uff08Device Tree Source\uff09\u6587\u4ef6\u3002\u672c\u6587\u5c06\u6df1\u5165\u63a2\u8ba8Linux DTS\u7684\u5e94\u7528\u53ca\u5b9e\u8df5\u6307\u5357\uff0c\u901a\u8fc7\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u5e2e\u52a9\u8bfb\u8005\u66f4\u597d\u5730\u7406\u89e3\u548c\u8fd0\u7528Device Tree\u3002 \u4e00\u3001\u4ec0\u4e48\u662fDevice Tree\uff1f Device Tree\u662fLinux\u5185\u6838\u4e2d\u7528\u4e8e\u63cf\u8ff0\u786c\u4ef6\u5e73\u53f0\u4fe1\u606f\u7684\u4e00\u79cd\u6570\u636e\u7ed3\u6784\u683c\u5f0f\u3002\u5b83\u5c06\u786c\u4ef6\u8bbe\u5907\u53ca\u8d44\u6e90\u7684\u63cf\u8ff0\u4fe1\u606f\u4ece\u5185\u6838\u6e90\u4ee3\u7801\u4e2d\u5206\u79bb\u51fa\u6765\uff0c\u4ee5\u4e00\u79cd\u7c7b\u4f3c\u4e8e\u6811\u72b6\u7ed3\u6784\u7684\u6587\u672c\u6587\u4ef6\u7684\u5f62\u5f0f\u5b58\u5728\u3002\u5728Linux\u542f\u52a8\u65f6\uff0cBootloader\u4f1a\u52a0\u8f7dDevice Tree\u6587\u4ef6\u5230\u5185\u5b58\u4e2d\uff0c\u5e76\u4f20\u9012\u7ed9Linux\u5185\u6838\uff0c\u5185\u6838\u5728\u542f\u52a8\u65f6\u6839\u636eDevice Tree\u6587\u4ef6\u7684\u5185\u5bb9\u8fdb\u884c\u8bbe\u5907\u7684\u521d\u59cb\u5316\u548c\u8d44\u6e90\u7684\u5206\u914d\u3002 \u4e8c\u3001Device Tree\u7684\u7ec4\u6210 \u8282\u70b9\uff08Node\uff09\uff1aDevice Tree\u4ee5\u8282\u70b9\u4e3a\u5355\u4f4d\u7ec4\u7ec7\u786c\u4ef6\u8bbe\u5907\u7684\u4fe1\u606f\uff0c\u5728Device Tree\u4e2d\uff0c\u6bcf\u4e2a\u8bbe\u5907\u90fd\u5bf9\u5e94\u4e00\u4e2a\u8282\u70b9\u3002\u6bcf\u4e2a\u8282\u70b9\u901a\u8fc7\u5173\u952e\u8bcd\u548c\u5c5e\u6027\u63cf\u8ff0\u8bbe\u5907\u7684\u7c7b\u578b\u3001\u5730\u5740\u3001\u4e2d\u65ad\u7b49\u4fe1\u606f\u3002 \u8282\u70b9\u5c5e\u6027\uff08Property\uff09\uff1a\u8282\u70b9\u5c5e\u6027\u53ef\u4ee5\u5305\u62ec\u8bbe\u5907\u7684\u5177\u4f53\u4fe1\u606f\uff0c\u4f8b\u5982\u8bbe\u5907\u7684\u5730\u5740\u3001\u4e2d\u65ad\u3001\u5bc4\u5b58\u5668\u5730\u5740\u7b49\u3002\u5c5e\u6027\u4ee5\u7684\u5f62\u5f0f\u5b58\u5728\uff0c\u901a\u8fc7\u8282\u70b9\u63cf\u8ff0\u8bbe\u5907\u7684\u5404\u79cd\u7279\u6027\u3002 include\u6307\u4ee4\uff1aDevice Tree\u6587\u4ef6\u4e2d\u53ef\u4ee5\u4f7f\u7528include\u6307\u4ee4\u5f15\u7528\u5176\u4ed6Device Tree\u6587\u4ef6\uff0c\u65b9\u4fbf\u7ec4\u7ec7\u548c\u91cd\u7528\u8bbe\u5907\u63cf\u8ff0\u4fe1\u606f\u3002 \u4e09\u3001\u5982\u4f55\u7f16\u5199Device Tree\u6587\u4ef6 \u63a5\u4e0b\u6765\u6211\u4eec\u901a\u8fc7\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\u6765\u5c55\u793a\u5982\u4f55\u7f16\u5199\u4e00\u4e2a\u7b80\u5355\u7684Device Tree\u6587\u4ef6\uff0c\u4ee5\u63cf\u8ff0\u4e00\u4e2aLED\u8bbe\u5907\u3002\u5047\u8bbeLED\u8fde\u63a5\u5728GPIO1_1\u5f15\u811a\u4e0a\uff0cGPIO1_1\u7684\u7269\u7406\u5730\u5740\u4e3a0x44\u3002 \u9996\u5148\uff0c\u521b\u5efa\u4e00\u4e2a\u65b0\u7684Device Tree\u6587\u4ef6led.dts\uff0c\u5185\u5bb9\u5982\u4e0b\uff1a \/dts-v1\/; \/ { compatible = “my_led”; led { compatible = “gpio-led”; status = “okay”; gpios = ; label = “led_1”; }; }; \u767b\u5f55\u540e\u590d\u5236 \u5728\u8fd9\u4e2aDevice Tree\u6587\u4ef6\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2aLED\u8282\u70b9\uff0c\u8be5\u8282\u70b9\u5305\u62ecLED\u7684\u4e00\u4e9b\u57fa\u672c\u4fe1\u606f\uff0c\u4f8b\u5982LED\u6240\u8fde\u63a5\u7684GPIO\u5f15\u811a\u3001LED\u7684\u6807\u7b7e\u7b49\u3002 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-17594","post","type-post","status-publish","format-standard","hentry","category-os"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/17594","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=17594"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/17594\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=17594"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=17594"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=17594"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}