{"id":51512,"date":"2024-12-03T15:50:23","date_gmt":"2024-12-03T07:50:23","guid":{"rendered":"https:\/\/fwq.ai\/blog\/51512\/"},"modified":"2024-12-03T15:50:23","modified_gmt":"2024-12-03T07:50:23","slug":"linux-dts%e6%98%af%e4%bb%80%e4%b9%88%ef%bc%9f%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8%ef%bc%9f-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/51512\/","title":{"rendered":"Linux DTS\u662f\u4ec0\u4e48\uff1f\u5982\u4f55\u4f7f\u7528\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

Linux DTS\u662f\u4ec0\u4e48\uff1f\u5982\u4f55\u4f7f\u7528\uff1f<\/h1>\n

\u73cd\u60dc\u65f6\u95f4\uff0c\u52e4\u594b\u5b66\u4e60\uff01\u4eca\u5929\u7ed9\u5927\u5bb6\u5e26\u6765\uff0c\u6b63\u6587\u5185\u5bb9\u4e3b\u8981\u6d89\u53ca\u5230<\/span>\u7b49\u7b49\uff0c\u5982\u679c\u4f60\u6b63\u5728\u5b66\u4e60\u6587\u7ae0<\/span>\uff0c\u6216\u8005\u662f\u5bf9\u6587\u7ae0<\/span>\u6709\u7591\u95ee\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u6211\uff01\u540e\u9762\u6211\u4f1a\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u5185\u5bb9\u7684\uff0c\u5e0c\u671b\u90fd\u80fd\u5e2e\u5230\u6b63\u5728\u5b66\u4e60\u7684\u5927\u5bb6\uff01<\/p>\n

Linux DTS\uff08Device Tree Source\uff09\u662f\u4e00\u79cd\u63cf\u8ff0\u786c\u4ef6\u4fe1\u606f\u7684\u6570\u636e\u7ed3\u6784\uff0c\u4e3b\u8981\u7528\u4e8e\u63cf\u8ff0\u5d4c\u5165\u5f0f\u7cfb\u7edf\u4e2d\u5404\u4e2a\u786c\u4ef6\u8bbe\u5907\u7684\u4fe1\u606f\uff0c\u5305\u62ec\u8bbe\u5907\u7684\u5730\u5740\u3001\u4e2d\u65ad\u3001\u5bc4\u5b58\u5668\u914d\u7f6e\u4ee5\u53ca\u8bbe\u5907\u9a71\u52a8\u7b49\u3002\u5728Linux\u5185\u6838\u4e2d\uff0cDTS\u6587\u4ef6\u901a\u5e38\u88ab\u7528\u6765\u63cf\u8ff0\u677f\u8f7d\u8bbe\u5907\u7684\u786c\u4ef6\u4fe1\u606f\uff0c\u4ee5\u4fbf\u64cd\u4f5c\u7cfb\u7edf\u80fd\u591f\u6b63\u786e\u5730\u8bc6\u522b\u548c\u4f7f\u7528\u786c\u4ef6\u8bbe\u5907\u3002<\/p>\n

DTS\u6587\u4ef6\u7ed3\u6784<\/h3>\n

\u4e00\u4e2a\u5178\u578b\u7684DTS\u6587\u4ef6\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n

\/dts-v1\/;\n\n#include <imx6qdl-pico.dtsi>\n#include <imx6qdl-pico-m4.dtsi>\n\n\/ {\n    compatible = \"fsl,imx6q-pico\", \"fsl,imx6q\";\n    \n    model = \"Boundary Devices i.MX6 Quad SABRE Lite\";\n    \n    memory {\n        device_type = \"memory\";\n        reg = <0x10000000 0x40000000>;\n    };\n    \n    chosen {\n        compatible = \"brcm,bcm2835\";\n        uart_boot = <&uart1>;\n    };\n\n    aliases {\n        serial0 = &uart1;\n    };\n\n    soc {\n        compatible = \"simple-bus\";\n        #address-cells = <1>;\n        #size-cells = <1>;\n        ranges;\n        \n        gpio: gpio@0209c000 {\n            compatible = \"fsl,imx6ul-gpio\";\n            reg = <0x0209c000 0x1000>;\n            interrupts = <GPIOn IRQn>;\n            gpio-controller;\n            #gpio-cells = <2>;\n        };\n    \n    };\n    \n    uart1: serial@02020000 {\n        compatible = \"fsl,imx6q-uart\", \"fsl,imx21-uart\";\n        reg = <0x02020000 0x40000>;\n        interrupts = <78>;\n        clocks = <&clks 82>;\n        clock-names = \"ipg\", \"per\";\n        status = \"okay\";\n    };\n    \n    sound {\n        compatible = \"fsl,imx6-sai\";\n        model = \"imx6-sai\";\n        status = \"okay\";\n        \/* SSI1 *\/\n        ssi@021d8000 {\n            compatible = \"fsl,imx6-sai\";\n            reg = <0x021d8000 0x4000>;\n            interrupts = <0 125 0>;\n            clocks = <&clks 2>;\n            dmas = <&sdma 9 11 0>, <&sdma 10 11 0>, <&sdma 11 11 0>;\n            dma-names = \"tx\", \"rx\", \"mclk\";\n            status = \"okay\";\n        };\n    };\n};<\/pre>\n
DTS\u6587\u4ef6\u5185\u5bb9\u8bf4\u660e<\/h3>\n
    \n
  • \/dts-v1\/<\/code>: \u6307\u5b9a\u7248\u672c\u4e3aDTS\u7248\u672c1\uff0c\u63cf\u8ff0DTS\u6587\u4ef6\u7684\u7248\u672c\u4fe1\u606f\u3002<\/li>\n
  • #include <imx6qdl-pico.dtsi><\/code>: \u5305\u542b\u5176\u4ed6DTS\u6587\u4ef6\uff0c\u53ef\u590d\u7528\u5176\u5b9a\u4e49\u3002<\/li>\n
  • \/<\/code>: \u6839\u8282\u70b9\uff0c\u63cf\u8ff0\u6574\u4e2a\u8bbe\u5907\u6811\u7ed3\u6784\u3002<\/li>\n
  • compatible<\/code>: \u6307\u5b9a\u8bbe\u5907\u517c\u5bb9\u6027\u4fe1\u606f\u3002<\/li>\n
  • model<\/code>: \u8bbe\u5907\u578b\u53f7\u4fe1\u606f\u3002<\/li>\n
  • memory<\/code>: \u63cf\u8ff0\u5185\u5b58\u4fe1\u606f\u3002<\/li>\n
  • chosen<\/code>: \u63cf\u8ff0\u4e00\u4e9b\u9009\u9879\u4fe1\u606f\u3002<\/li>\n
  • aliases<\/code>: \u5b9a\u4e49\u8bbe\u5907\u522b\u540d\u3002<\/li>\n
  • soc<\/code>: \u63cf\u8ff0SoC\u76f8\u5173\u4fe1\u606f\u3002<\/li>\n
  • gpio<\/code>: \u63cf\u8ff0GPIO\u63a7\u5236\u5668\u3002<\/li>\n
  • uart1<\/code>: \u63cf\u8ff0UART1\u786c\u4ef6\u4fe1\u606f\u3002<\/li>\n
  • sound<\/code>: \u63cf\u8ff0\u58f0\u97f3\u8bbe\u5907\u4fe1\u606f\u3002<\/li>\n<\/ul>\n
    \u5982\u4f55\u4f7f\u7528Linux DTS<\/h3>\n
      \n
    1. \u7f16\u8f91DTS\u6587\u4ef6\uff1a\u5728Linux\u5185\u6838\u6e90\u7801\u4e2d\u7684arch\/arm\/boot\/dts\/<\/code>\u76ee\u5f55\u4e0b\u627e\u5230\u5bf9\u5e94\u5e73\u53f0\u7684DTS\u6587\u4ef6\uff08\u5982imx6qdl-pico.dtsi<\/code>\uff09\uff0c\u6839\u636e\u5b9e\u9645\u786c\u4ef6\u4fe1\u606f\u7f16\u8f91DTS\u6587\u4ef6\u3002<\/li>\n
    2. \n
      \u7f16\u8bd1DTS\u6587\u4ef6\uff1a\u5728Linux\u5185\u6838\u6e90\u7801\u6839\u76ee\u5f55\u4e0b\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\u7f16\u8bd1DTS\u6587\u4ef6\uff1a<\/p>\n
      make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- dtbs<\/pre>\n<\/li>\n
    3. \u66ff\u6362\u8bbe\u5907\u6811\u4e8c\u8fdb\u5236\u6587\u4ef6\uff1a\u5c06\u751f\u6210\u7684.dtb<\/code>\u6587\u4ef6\uff08\u8bbe\u5907\u6811\u4e8c\u8fdb\u5236\u6587\u4ef6\uff09\u66ff\u6362\u5230\u76ee\u6807\u8bbe\u5907\u7684\u5f15\u5bfc\u5206\u533a\u3002<\/li>\n
    4. \u4f7f\u7528\u8bbe\u5907\u6811\uff1a\u5728Linux\u5185\u6838\u542f\u52a8\u65f6\uff0c\u4f1a\u52a0\u8f7d\u8bbe\u5907\u6811\u6587\u4ef6\u6765\u63cf\u8ff0\u786c\u4ef6\u4fe1\u606f\uff0c\u4ece\u800c\u6b63\u786e\u8bc6\u522b\u548c\u914d\u7f6e\u786c\u4ef6\u8bbe\u5907\u3002<\/li>\n<\/ol>\n
      \u4ee3\u7801\u793a\u4f8b<\/h3>\n
      #include <linux\/module.h>\n#include <linux\/of_device.h>\n#include <linux\/platform_device.h>\n\nstatic int my_driver_probe(struct platform_device *pdev)\n{\n    struct device_node *np = pdev->dev.of_node;\n    \n    if (!np) {\n        dev_err(&pdev->dev, \"No device tree node found\n\");\n        return -ENODEV;\n    }\n    \n    \/\/ \u89e3\u6790\u8bbe\u5907\u6811\u8282\u70b9\u4fe1\u606f\n    u32 reg;\n    if (of_property_read_u32(np, \"reg\", &reg)) {\n        dev_err(&pdev->dev, \"Failed to read 'reg' property\n\");\n        return -EINVAL;\n    }\n    \n    dev_info(&pdev->dev, \"Got 'reg' property: %u\n\", reg);\n    \n    return 0;\n}\n\nstatic const struct of_device_id my_driver_of_match[] = {\n    { .compatible = \"my_driver\", },\n    { },\n};\nMODULE_DEVICE_TABLE(of, my_driver_of_match);\n\nstatic struct platform_driver my_driver = {\n    .probe = my_driver_probe,\n    .driver = {\n        .name = \"my_driver\",\n        .of_match_table = my_driver_of_match,\n        .owner = THIS_MODULE,\n    }\n};\n\nmodule_platform_driver(my_driver);\n\nMODULE_LICENSE(\"GPL\");\nMODULE_AUTHOR(\"Author Name\");\nMODULE_DESCRIPTION(\"Sample driver using Device Tree\");<\/pre>\n
      \u4ee5\u4e0a\u662f\u4e00\u4e2a\u7b80\u5355\u7684Linux\u8bbe\u5907\u9a71\u52a8\u7a0b\u5e8f\u793a\u4f8b\uff0c\u901a\u8fc7\u89e3\u6790\u8bbe\u5907\u6811\u8282\u70b9\u4e2d\u7684\u5c5e\u6027\u6765\u914d\u7f6e\u786c\u4ef6\u8bbe\u5907\u3002\u5728probe<\/code>\u51fd\u6570\u4e2d\uff0c\u9996\u5148\u83b7\u53d6\u8bbe\u5907\u6811\u8282\u70b9\uff0c\u7136\u540e\u8bfb\u53d6\u5176\u4e2d\u7684reg<\/code>\u5c5e\u6027\u5e76\u8f93\u51fa\u3002\u5728of_device_id<\/code>\u4e2d\u58f0\u660e\u4e86\u9700\u8981\u5339\u914d\u7684\u8bbe\u5907\u6811\u8282\u70b9\u7684\u517c\u5bb9\u6027\u4fe1\u606f\uff0c\u4ee5\u4fbf\u9a71\u52a8\u7a0b\u5e8f\u6b63\u786e\u5339\u914d\u8bbe\u5907\u3002<\/p>\n
      \u4eca\u5929\u5173\u4e8e\u300aLinux DTS\u662f\u4ec0\u4e48\uff1f\u5982\u4f55\u4f7f\u7528\uff1f\u300b\u7684\u5185\u5bb9\u5c31\u4ecb\u7ecd\u5230\u8fd9\u91cc\u4e86\uff0c\u662f\u4e0d\u662f\u5b66\u8d77\u6765\u4e00\u76ee\u4e86\u7136\uff01\u60f3\u8981\u4e86\u89e3\u66f4\u591a\u5173\u4e8eLinux,\u4f7f\u7528,dts\u7684\u5185\u5bb9\u8bf7\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\uff01<\/p>\n
      \n
      <\/dt>\n
      \n   \u4f7f\u7528 chromedp \u52a0\u8f7d Chrome \u6d4f\u89c8\u5668\u4e2d\u7684\u7528\u6237\u4e2a\u4eba\u8d44\u6599\u548c\u6570\u636e\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
      Linux DTS\u662f\u4ec0\u4e48\uff1f\u5982\u4f55\u4f7f\u7528\uff1f \u73cd\u60dc\u65f6\u95f4\uff0c\u52e4\u594b\u5b66\u4e60\uff01\u4eca\u5929\u7ed9\u5927\u5bb6\u5e26\u6765\uff0c\u6b63\u6587\u5185\u5bb9\u4e3b\u8981\u6d89\u53ca\u5230\u7b49\u7b49\uff0c\u5982\u679c\u4f60\u6b63\u5728\u5b66\u4e60\u6587\u7ae0\uff0c\u6216\u8005\u662f\u5bf9\u6587\u7ae0\u6709\u7591\u95ee\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u6211\uff01\u540e\u9762\u6211\u4f1a\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u5185\u5bb9\u7684\uff0c\u5e0c\u671b\u90fd\u80fd\u5e2e\u5230\u6b63\u5728\u5b66\u4e60\u7684\u5927\u5bb6\uff01 Linux DTS\uff08Device Tree Source\uff09\u662f\u4e00\u79cd\u63cf\u8ff0\u786c\u4ef6\u4fe1\u606f\u7684\u6570\u636e\u7ed3\u6784\uff0c\u4e3b\u8981\u7528\u4e8e\u63cf\u8ff0\u5d4c\u5165\u5f0f\u7cfb\u7edf\u4e2d\u5404\u4e2a\u786c\u4ef6\u8bbe\u5907\u7684\u4fe1\u606f\uff0c\u5305\u62ec\u8bbe\u5907\u7684\u5730\u5740\u3001\u4e2d\u65ad\u3001\u5bc4\u5b58\u5668\u914d\u7f6e\u4ee5\u53ca\u8bbe\u5907\u9a71\u52a8\u7b49\u3002\u5728Linux\u5185\u6838\u4e2d\uff0cDTS\u6587\u4ef6\u901a\u5e38\u88ab\u7528\u6765\u63cf\u8ff0\u677f\u8f7d\u8bbe\u5907\u7684\u786c\u4ef6\u4fe1\u606f\uff0c\u4ee5\u4fbf\u64cd\u4f5c\u7cfb\u7edf\u80fd\u591f\u6b63\u786e\u5730\u8bc6\u522b\u548c\u4f7f\u7528\u786c\u4ef6\u8bbe\u5907\u3002 DTS\u6587\u4ef6\u7ed3\u6784 \u4e00\u4e2a\u5178\u578b\u7684DTS\u6587\u4ef6\u5982\u4e0b\u6240\u793a\uff1a \/dts-v1\/; #include <imx6qdl-pico.dtsi> #include <imx6qdl-pico-m4.dtsi> \/ { compatible = “fsl,imx6q-pico”, “fsl,imx6q”; model = “Boundary Devices i.MX6 Quad SABRE Lite”; memory { device_type = “memory”; reg = <0x10000000 0x40000000>; }; chosen { compatible = “brcm,bcm2835”; uart_boot = <&uart1>; }; aliases { serial0 = &uart1; }; soc { […]<\/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-51512","post","type-post","status-publish","format-standard","hentry","category-os"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/51512","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=51512"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/51512\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=51512"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=51512"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=51512"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}