{"id":72806,"date":"2026-02-06T15:57:43","date_gmt":"2026-02-06T07:57:43","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/72806.html"},"modified":"2026-02-06T15:57:43","modified_gmt":"2026-02-06T07:57:43","slug":"linux-%e9%a9%b1%e5%8a%a8%e6%a0%b8%e5%bf%83%e7%9f%a5%e8%af%86","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/72806.html","title":{"rendered":"Linux \u9a71\u52a8\u6838\u5fc3\u77e5\u8bc6"},"content":{"rendered":"<h2>Linux \u9a71\u52a8\u6838\u5fc3\u77e5\u8bc6<\/h2>\n<h3>\u4e00\u3001Linux \u8bbe\u5907\u9a71\u52a8\u6a21\u578b<\/h3>\n<h4>1. Linux \u8bbe\u5907\u9a71\u52a8\u6a21\u578b\u7684\u6838\u5fc3\u7ec4\u4ef6<\/h4>\n<ul>\n<li>kobject&#xff1a;\u6700\u57fa\u7840\u5bf9\u8c61&#xff0c;\u63d0\u4f9b\u5f15\u7528\u8ba1\u6570\u3001sysfs \u6587\u4ef6\u7cfb\u7edf\u5bfc\u51fa\u3001\u5bf9\u8c61\u751f\u547d\u5468\u671f\u7ba1\u7406&#xff1b;<\/li>\n<li>kset&#xff1a;kobject \u7684\u96c6\u5408&#xff0c;\u6309\u7c7b\u522b\u7ba1\u7406\u540c\u7c7b kobject&#xff08;\u5982\u6240\u6709\u8bbe\u5907\u5bf9\u8c61&#xff09;&#xff0c;\u652f\u6301\u7edf\u4e00\u4e8b\u4ef6\u5904\u7406&#xff1b;<\/li>\n<li>bus&#xff1a;\u603b\u7ebf\u62bd\u8c61&#xff08;\u5982 platform\/I2C\/spi&#xff09;&#xff0c;\u662f\u8bbe\u5907\u4e0e\u9a71\u52a8\u7684\u8fde\u63a5\u5a92\u4ecb&#xff0c;\u5b9a\u4e49\u5339\u914d\/\u89e3\u7ed1\u89c4\u5219&#xff1b;<\/li>\n<li>device&#xff1a;\u8868\u793a\u786c\u4ef6\u8bbe\u5907&#xff08;\u7269\u7406\/\u903b\u8f91&#xff09;&#xff0c;\u5b58\u50a8\u8bbe\u5907\u5c5e\u6027\u3001\u7236\/\u5b50\u8bbe\u5907\u5173\u7cfb&#xff0c;\u5173\u8054\u5230\u5177\u4f53\u603b\u7ebf&#xff1b;<\/li>\n<li>driver&#xff1a;\u9a71\u52a8\u62bd\u8c61&#xff0c;\u5305\u542b probe&#xff08;\u8bbe\u5907\u5339\u914d\u540e\u521d\u59cb\u5316&#xff09;\u3001remove&#xff08;\u8bbe\u5907\u79fb\u9664\u65f6\u6e05\u7406&#xff09;\u7b49\u6838\u5fc3\u63a5\u53e3&#xff1b;<\/li>\n<li>class&#xff1a;\u6309\u529f\u80fd\u5f52\u7c7b\u8bbe\u5907&#xff08;\u5982 led\/input&#xff09;&#xff0c;\u7b80\u5316\u7528\u6237\u6001\u8bbf\u95ee&#xff08;\/sys\/class\/&#xff09;\u3002<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260206075739-69859ef324305.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h4>2. \u9a71\u52a8\u548c\u8bbe\u5907\u662f\u5982\u4f55\u5339\u914d\u7684<\/h4>\n<p>\u6838\u5fc3\u57fa\u4e8e\u603b\u7ebf\u7684\u5339\u914d\u51fd\u6570&#xff0c;\u5206\u4e09\u7c7b\u573a\u666f&#xff1a;<\/p>\n<ul>\n<li>\u8bbe\u5907\u6811\u5339\u914d&#xff08;\u4e3b\u6d41&#xff09;&#xff1a;\u9a71\u52a8\u7684of_match_table\u4e2dcompatible\u5c5e\u6027&#xff0c;\u4e0e\u8bbe\u5907\u6811\u4e2d\u8bbe\u5907\u8282\u70b9\u7684compatible\u5b57\u7b26\u4e32\u5339\u914d&#xff1b;<\/li>\n<li>ID \u5339\u914d&#xff1a;\u9a71\u52a8\u7684 id_table&#xff08;\u5982 I2C \u7684 driver.id_table&#xff09;\u4e0e\u8bbe\u5907\u7684 ID&#xff08;\u5982 I2C \u7684 client.addr&#xff09;\u5339\u914d&#xff1b;<\/li>\n<li>\u5e73\u53f0\u603b\u7ebf\u5339\u914d&#xff1a;\u5e73\u53f0\u8bbe\u5907&#xff08;platform_device&#xff09;\u7684name\u4e0e\u5e73\u53f0\u9a71\u52a8&#xff08;platform_driver&#xff09;\u7684driver.name\u5b8c\u5168\u5339\u914d&#xff1b;<br \/>\n\u5339\u914d\u6210\u529f\u540e&#xff0c;\u603b\u7ebf\u8c03\u7528\u9a71\u52a8\u7684 probe \u51fd\u6570\u5b8c\u6210\u8bbe\u5907\u521d\u59cb\u5316\u3002<br \/>\n<img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260206075739-69859ef35d76d.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/li>\n<\/ul>\n<h4>3. \u8bbe\u5907\u6811\u5728\u9a71\u52a8\u5f00\u53d1\u4e2d\u7684\u4f5c\u7528<\/h4>\n<ul>\n<li>\u786c\u4ef6\u89e3\u8026&#xff1a;\u5c06\u786c\u4ef6\u53c2\u6570&#xff08;\u5bc4\u5b58\u5668\u5730\u5740\u3001GPIO\u3001\u4e2d\u65ad\u53f7\u3001\u65f6\u949f&#xff09;\u4ece\u9a71\u52a8\u4ee3\u7801\u4e2d\u5265\u79bb&#xff0c;\u96c6\u4e2d\u5728\u8bbe\u5907\u6811&#xff08;.dts&#xff09;&#xff0c;\u65e0\u9700\u4fee\u6539\u9a71\u52a8\u9002\u914d\u4e0d\u540c\u786c\u4ef6&#xff1b;<\/li>\n<li>\u52a8\u6001\u914d\u7f6e&#xff1a;\u8fd0\u884c\u65f6\u901a\u8fc7\u8bbe\u5907\u6811\u89e3\u6790\u786c\u4ef6\u4fe1\u606f&#xff0c;\u652f\u6301\u591a\u5e73\u53f0\u590d\u7528\u540c\u4e00\u9a71\u52a8&#xff1b;<\/li>\n<li>\u6807\u51c6\u5316&#xff1a;\u9075\u5faa DTB \u89c4\u8303&#xff0c;\u7edf\u4e00\u786c\u4ef6\u63cf\u8ff0\u683c\u5f0f&#xff0c;\u7b80\u5316\u9a71\u52a8\u79fb\u690d&#xff1b;<\/li>\n<li>\u8d44\u6e90\u7ba1\u7406&#xff1a;\u9a71\u52a8\u901a\u8fc7of_\u63a5\u53e3&#xff08;\u5982of_get_address&#xff09;\u83b7\u53d6\u786c\u4ef6\u8d44\u6e90&#xff0c;\u66ff\u4ee3\u4f20\u7edfplatform_get_resource\u3002<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260206075739-69859ef38eec4.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h3>\u4e8c\u3001GPIO \u5b50\u7cfb\u7edf<\/h3>\n<h4>1. GPIO \u5b50\u7cfb\u7edf\u67b6\u6784<\/h4>\n<ul>\n<li>\u5e95\u5c42&#xff1a;GPIO \u63a7\u5236\u5668\u786c\u4ef6\u9a71\u52a8&#xff08;\u5982\u82af\u7247\u7ea7 GPIO \u63a7\u5236\u5668&#xff09;&#xff0c;\u5b9e\u73b0\u5bc4\u5b58\u5668\u64cd\u4f5c&#xff08;\u65b9\u5411\/\u7535\u5e73\/\u4e2d\u65ad&#xff09;&#xff1b;<\/li>\n<li>\u6838\u5fc3\u5c42&#xff08;gpiolib&#xff09;&#xff1a;\u63d0\u4f9b\u7edf\u4e00\u7684 GPIO \u62bd\u8c61\u63a5\u53e3&#xff08;gpio_request\/gpio_set_value&#xff09;&#xff0c;\u5c4f\u853d\u4e0d\u540c\u63a7\u5236\u5668\u7684\u786c\u4ef6\u5dee\u5f02&#xff1b;<\/li>\n<li>\u4e0a\u5c42&#xff1a;\u9a71\u52a8\u5c42\u8c03\u7528 gpiolib \u63a5\u53e3\u64cd\u4f5c GPIO&#xff0c;\u652f\u6301\u8bbe\u5907\u6811\u89e3\u6790\u3001\u4e2d\u65ad\u6620\u5c04\u3001sysfs \u5bfc\u51fa\u3002<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260206075739-69859ef3cb092.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h4>2. GPIO \u5b50\u7cfb\u7edf\u5b9e\u73b0&#xff08;\u6838\u5fc3\u903b\u8f91&#xff09;<\/h4>\n<ul>\n<li>GPIO \u63a7\u5236\u5668\u6ce8\u518c&#xff1a;\u9a71\u52a8\u5b9e\u73b0gpio_chip\u7ed3\u6784\u4f53&#xff08;\u5305\u542b\u65b9\u5411\/\u7535\u5e73\/\u4e2d\u65ad\u64cd\u4f5c\u63a5\u53e3&#xff09;&#xff0c;\u901a\u8fc7gpiochip_add_data\u6ce8\u518c\u5230 gpiolib&#xff1b;<\/li>\n<li>GPIO \u7f16\u53f7\u7ba1\u7406&#xff1a;\u4e3a\u6bcf\u4e2a GPIO \u5206\u914d\u5168\u5c40\u7f16\u53f7&#xff08;\u9759\u6001\/base \u6216\u52a8\u6001&#xff09;&#xff0c;\u5173\u8054\u5230\u5177\u4f53\u63a7\u5236\u5668&#xff1b;<\/li>\n<li>GPIO \u8bf7\u6c42\/\u91ca\u653e&#xff1a;\u9a71\u52a8\u901a\u8fc7gpio_request\u7533\u8bf7 GPIO&#xff08;\u9632\u6b62\u51b2\u7a81&#xff09;&#xff0c;gpio_free\u91ca\u653e&#xff1b;<\/li>\n<li>\u7535\u5e73\/\u65b9\u5411\u64cd\u4f5c&#xff1a;\u901a\u8fc7gpio_direction_input\/output\u8bbe\u7f6e\u65b9\u5411&#xff0c;gpio_get_value\/set_value\u8bfb\u5199\u7535\u5e73\u3002<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260206075740-69859ef412feb.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h4>3. GPIO \u5b50\u7cfb\u7edf\u7684\u4e3b\u8981\u7ec4\u4ef6<\/h4>\n<ul>\n<li>gpio_chip&#xff1a;\u8868\u793a\u4e00\u4e2a GPIO \u63a7\u5236\u5668&#xff0c;\u5305\u542b\u63a7\u5236\u5668\u7684\u786c\u4ef6\u64cd\u4f5c\u63a5\u53e3&#xff08;\u5982\u65b9\u5411\u8bbe\u7f6e\u3001\u7535\u5e73\u8bfb\u5199&#xff09;&#xff1b;<\/li>\n<li>gpio_desc&#xff1a;\u5355\u4e2a GPIO \u5f15\u811a\u7684\u63cf\u8ff0\u7b26&#xff0c;\u5b58\u50a8 GPIO \u7f16\u53f7\u3001\u65b9\u5411\u3001\u7535\u5e73\u3001\u4e2d\u65ad\u5c5e\u6027\u3001\u6240\u5c5egpio_chip&#xff1b;<\/li>\n<li>gpiolib&#xff1a;\u6838\u5fc3\u5e93&#xff0c;\u63d0\u4f9b GPIO \u7533\u8bf7\u3001\u91ca\u653e\u3001\u7535\u5e73\u64cd\u4f5c\u3001\u4e2d\u65ad\u6620\u5c04\u7684\u7edf\u4e00\u63a5\u53e3&#xff1b;<\/li>\n<li>GPIO \u63a7\u5236\u5668\u9a71\u52a8&#xff1a;\u786c\u4ef6\u5c42\u5b9e\u73b0&#xff0c;\u5bf9\u5177\u4f53\u82af\u7247\u7684 GPIO \u5bc4\u5b58\u5668&#xff08;\u5982 NXP \u9ad8\u901a GPIO \u63a7\u5236\u5668&#xff09;\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<h4>4. \u5982\u4f55\u5728\u9a71\u52a8\u4e2d\u4f7f\u7528 GPIO<\/h4>\n<p><span class=\"token comment\">\/\/ 1. \u4ece\u8bbe\u5907\u6811\u83b7\u53d6GPIO\u7f16\u53f7<\/span><br \/>\n<span class=\"token keyword\">int<\/span> gpio_num <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">of_get_named_gpio<\/span><span class=\"token punctuation\">(<\/span>np<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;reset-gpio&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/ 2. \u7533\u8bf7GPIO<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token function\">gpio_request<\/span><span class=\"token punctuation\">(<\/span>gpio_num<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;reset-gpio&#034;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">return<\/span> <span class=\"token operator\">&#8211;<\/span>EBUSY<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/ 3. \u8bbe\u7f6e\u65b9\u5411&#xff08;\u8f93\u51fa&#xff09;<\/span><br \/>\n<span class=\"token function\">gpio_direction_output<\/span><span class=\"token punctuation\">(<\/span>gpio_num<span class=\"token punctuation\">,<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/ 4. \u64cd\u4f5c\u7535\u5e73<\/span><br \/>\n<span class=\"token function\">gpio_set_value<\/span><span class=\"token punctuation\">(<\/span>gpio_num<span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u62c9\u4f4e<\/span><br \/>\n<span class=\"token comment\">\/\/ 5. \u91ca\u653eGPIO&#xff08;\u9a71\u52a8\u5378\u8f7d\u65f6&#xff09;<\/span><br \/>\n<span class=\"token function\">gpio_free<\/span><span class=\"token punctuation\">(<\/span>gpio_num<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u8fdb\u9636&#xff1a;\u4f7f\u7528devm_gpio_request&#xff08;\u8bbe\u5907\u7ba1\u7406\u63a5\u53e3&#xff09;&#xff0c;\u81ea\u52a8\u91ca\u653e GPIO&#xff0c;\u907f\u514d\u5185\u5b58\u6cc4\u6f0f\u3002<\/p>\n<h4>5. GPIO \u4e2d\u65ad\u662f\u5982\u4f55\u5b9e\u73b0<\/h4>\n<ul>\n<li>\u4e2d\u65ad\u6620\u5c04&#xff1a;\u901a\u8fc7gpio_to_irq\u5c06 GPIO \u7f16\u53f7\u8f6c\u6362\u4e3a\u4e2d\u65ad\u53f7&#xff1b;<\/li>\n<li>\u7533\u8bf7\u4e2d\u65ad&#xff1a;\u8c03\u7528request_irq\u6ce8\u518c\u4e2d\u65ad\u5904\u7406\u51fd\u6570&#xff0c;\u6307\u5b9a\u89e6\u53d1\u65b9\u5f0f&#xff08;\u4e0a\u5347\u6cbf\/\u4e0b\u964d\u6cbf\/\u53cc\u8fb9\u6cbf&#xff09;&#xff1b;<\/li>\n<li>\u786c\u4ef6\u89e6\u53d1&#xff1a;GPIO \u5f15\u811a\u7535\u5e73\u53d8\u5316\u89e6\u53d1\u63a7\u5236\u5668\u4e2d\u65ad&#xff0c;\u5185\u6838\u8c03\u7528\u6ce8\u518c\u7684\u4e2d\u65ad\u5904\u7406\u51fd\u6570&#xff1b;<\/li>\n<li>\u4e2d\u65ad\u91ca\u653e&#xff1a;\u9a71\u52a8\u5378\u8f7d\u65f6\u8c03\u7528free_irq\u91ca\u653e\u4e2d\u65ad\u3002<\/li>\n<\/ul>\n<p>\u793a\u4f8b&#xff1a;<\/p>\n<p><span class=\"token keyword\">int<\/span> irq_num <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">gpio_to_irq<\/span><span class=\"token punctuation\">(<\/span>gpio_num<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token function\">request_irq<\/span><span class=\"token punctuation\">(<\/span>irq_num<span class=\"token punctuation\">,<\/span> gpio_irq_handler<span class=\"token punctuation\">,<\/span> IRQF_TRIGGER_RISING<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;gpio-irq&#034;<\/span><span class=\"token punctuation\">,<\/span> dev<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h3>\u4e09\u3001Pinctrl \u5b50\u7cfb\u7edf<\/h3>\n<h4>1. Pinctrl \u5b50\u7cfb\u7edf\u67b6\u6784<\/h4>\n<ul>\n<li>\u6838\u5fc3\u5c42&#xff1a;\u63d0\u4f9b\u5f15\u811a\u590d\u7528\u3001\u914d\u7f6e&#xff08;\u4e0a\u62c9\/\u4e0b\u62c9\/\u901f\u7387&#xff09;\u7684\u7edf\u4e00\u63a5\u53e3&#xff1b;<\/li>\n<li>\u786c\u4ef6\u5c42&#xff1a;\u82af\u7247\u7ea7 pinctrl \u9a71\u52a8&#xff08;\u5982 pinctrl-s32k&#xff09;&#xff0c;\u5b9e\u73b0\u5bc4\u5b58\u5668\u7ea7\u5f15\u811a\u914d\u7f6e&#xff1b;<\/li>\n<li>\u8bbe\u5907\u6811\u5c42&#xff1a;\u63cf\u8ff0\u5f15\u811a\u7ec4&#xff08;pin group&#xff09;\u3001\u590d\u7528\u529f\u80fd&#xff08;function&#xff09;\u3001\u914d\u7f6e\u5c5e\u6027&#xff1b;<\/li>\n<li>\u63a5\u53e3\u5c42&#xff1a;\u9a71\u52a8\u901a\u8fc7pinctrl_get\/pinctrl_select_state\u8c03\u7528\u914d\u7f6e\u3002<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260206075740-69859ef442e2d.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h4>2. Pinctrl \u5b50\u7cfb\u7edf\u5b9e\u73b0&#xff08;\u6838\u5fc3\u6b65\u9aa4&#xff09;<\/h4>\n<ul>\n<li>pinctrl \u9a71\u52a8\u6ce8\u518c&#xff1a;\u5b9e\u73b0pinctrl_desc\u7ed3\u6784\u4f53&#xff08;\u5305\u542b\u5f15\u811a\u914d\u7f6e\u3001\u590d\u7528\u63a5\u53e3&#xff09;&#xff0c;\u901a\u8fc7pinctrl_register\u6ce8\u518c&#xff1b;<\/li>\n<li>\u8bbe\u5907\u6811\u89e3\u6790&#xff1a;\u89e3\u6790\u8bbe\u5907\u8282\u70b9\u7684pinctrl-0\/pinctrl-names\u5c5e\u6027&#xff0c;\u83b7\u53d6\u5f15\u811a\u72b6\u6001&#xff08;\u9ed8\u8ba4\/\u4f11\u7720&#xff09;&#xff1b;<\/li>\n<li>\u5f15\u811a\u914d\u7f6e&#xff1a;\u9a71\u52a8\u901a\u8fc7pinctrl_select_state\u9009\u62e9\u5f15\u811a\u72b6\u6001&#xff0c;\u5e95\u5c42\u9a71\u52a8\u4fee\u6539\u5bc4\u5b58\u5668\u914d\u7f6e\u590d\u7528\/\u4e0a\u4e0b\u62c9\u3002<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260206075740-69859ef47ac06.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h4>3. Pinctrl \u5b50\u7cfb\u7edf\u7684\u4f5c\u7528<\/h4>\n<ul>\n<li>\u5f15\u811a\u590d\u7528&#xff1a;\u914d\u7f6e\u5f15\u811a\u529f\u80fd&#xff08;\u5982\u540c\u4e00\u5f15\u811a\u5207\u6362\u4e3a GPIO\/I2C_SDA\/SPI_CLK&#xff09;&#xff1b;<\/li>\n<li>\u5f15\u811a\u914d\u7f6e&#xff1a;\u8bbe\u7f6e\u5f15\u811a\u7684\u7535\u6c14\u7279\u6027&#xff08;\u4e0a\u62c9\/\u4e0b\u62c9\/\u9a71\u52a8\u5f3a\u5ea6\u3001\u901f\u7387\u3001\u5f00\u6f0f\/\u63a8\u633d&#xff09;&#xff1b;<\/li>\n<li>\u5f15\u811a\u7ba1\u7406&#xff1a;\u7edf\u4e00\u7ba1\u7406\u7cfb\u7edf\u6240\u6709\u5f15\u811a&#xff0c;\u907f\u514d\u5f15\u811a\u51b2\u7a81&#xff1b;<\/li>\n<li>\u72b6\u6001\u5207\u6362&#xff1a;\u652f\u6301\u5f15\u811a\u5728\u4e0d\u540c\u72b6\u6001&#xff08;\u9ed8\u8ba4\/\u4f11\u7720\/\u5524\u9192&#xff09;\u4e0b\u7684\u914d\u7f6e\u5207\u6362&#xff0c;\u9002\u914d\u4f4e\u529f\u8017\u573a\u666f\u3002<\/li>\n<\/ul>\n<h4>4. Pinctrl \u4e0e GPIO \u5b50\u7cfb\u7edf\u7684\u5173\u7cfb<\/h4>\n<ul>\n<li>\u4f9d\u8d56\u5173\u7cfb&#xff1a;GPIO \u5f15\u811a\u5fc5\u987b\u5148\u901a\u8fc7 Pinctrl \u914d\u7f6e\u4e3a \u201cGPIO \u529f\u80fd\u201d&#xff0c;\u624d\u80fd\u88ab GPIO \u5b50\u7cfb\u7edf\u64cd\u4f5c&#xff1b;<\/li>\n<li>\u5206\u5de5\u4e0d\u540c&#xff1a;Pinctrl \u8d1f\u8d23\u5f15\u811a\u7684 \u201c\u590d\u7528&#043;\u7535\u6c14\u914d\u7f6e\u201d&#xff08;\u786c\u4ef6\u5c5e\u6027&#xff09;&#xff0c;GPIO \u8d1f\u8d23\u5f15\u811a\u7684 \u201c\u65b9\u5411&#043;\u7535\u5e73&#043;\u4e2d\u65ad\u201d&#xff08;\u529f\u80fd\u64cd\u4f5c&#xff09;&#xff1b;<\/li>\n<li>\u6d41\u7a0b\u8054\u52a8&#xff1a;\u9a71\u52a8\u5148\u901a\u8fc7 Pinctrl \u5c06\u5f15\u811a\u8bbe\u4e3a GPIO \u6a21\u5f0f&#xff0c;\u518d\u8c03\u7528 GPIO \u5b50\u7cfb\u7edf\u64cd\u4f5c\u7535\u5e73\/\u4e2d\u65ad\u3002<\/li>\n<\/ul>\n<h4>5. \u8bbe\u5907\u6811\u4e2d\u63cf\u8ff0 Pinctrl \u914d\u7f6e<\/h4>\n<p>\/\/ 1. \u5b9a\u4e49\u5f15\u811a\u7ec4\u548c\u914d\u7f6e<br \/>\npinctrl&#064;40014000 {<br \/>\n    pinctrl_my_gpio: my-gpio-grp {<br \/>\n        pinctrlx &#061; &lt;PIN_PA0L_GPIOx&gt;; \/\/ \u590d\u7528\u4e3aGPIO<br \/>\n        bias-pull-up; \/\/ \u4e0a\u62c9<br \/>\n        drive-strength &#061; &lt;20&gt;; \/\/ \u9a71\u52a8\u5f3a\u5ea620mA<br \/>\n    };<br \/>\n};<br \/>\n\/\/ 2. \u8bbe\u5907\u8282\u70b9\u5f15\u7528<br \/>\nmy_device {<br \/>\n    compatible &#061; &#034;vendor,my-device&#034;;<br \/>\n    pinctrl-names &#061; &#034;default&#034;;<br \/>\n    pinctrl-0 &#061; &lt;&amp;pinctrl_my_gpio&gt;; \/\/ \u5173\u8054\u5f15\u811a\u914d\u7f6e<br \/>\n    reset-gpio &#061; &lt;&amp;gpioa 1 GPIO_ACTIVE_LOW&gt;;<br \/>\n};<\/p>\n<h3>\u56db\u3001I2C \u5b50\u7cfb\u7edf<\/h3>\n<h4>1. I2C \u5b50\u7cfb\u7edf\u67b6\u6784<\/h4>\n<ul>\n<li>\u786c\u4ef6\u5c42&#xff1a;I2C \u63a7\u5236\u5668\u9a71\u52a8&#xff08;\u5982 I2c-imx&#xff09;&#xff0c;\u5b9e\u73b0\u603b\u7ebf\u65f6\u5e8f&#xff08;START\/STOP\/ACK&#xff09;\u3001\u5bc4\u5b58\u5668\u64cd\u4f5c&#xff1b;<\/li>\n<li>\u6838\u5fc3\u5c42&#xff1a;I2C \u6838\u5fc3&#xff08;i2c-core&#xff09;&#xff0c;\u63d0\u4f9b\u603b\u7ebf\u7ba1\u7406\u3001\u8bbe\u5907\/\u9a71\u52a8\u6ce8\u518c\u3001\u6570\u636e\u4f20\u8f93\u63a5\u53e3&#xff1b;<\/li>\n<li>\u8bbe\u5907\u5c42&#xff1a;i2c_client&#xff08;\u8868\u793a I2C \u8bbe\u5907&#xff09;&#xff0c;\u5173\u8054\u8bbe\u5907\u5730\u5740\u3001\u603b\u7ebf\u53f7\u3001\u8bbe\u5907\u6811\u8282\u70b9&#xff1b;<\/li>\n<li>\u9a71\u52a8\u5c42&#xff1a;i2c_driver&#xff08;I2C \u8bbe\u5907\u9a71\u52a8&#xff09;&#xff0c;\u5b9e\u73b0 probe\/remove\u3001\u6570\u636e\u4f20\u8f93\u63a5\u53e3\u3002<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260206075740-69859ef4a9c52.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h4>2. I2C \u5b50\u7cfb\u7edf\u5b9e\u73b0&#xff08;\u6838\u5fc3\u903b\u8f91&#xff09;<\/h4>\n<ul>\n<li>\u63a7\u5236\u5668\u6ce8\u518c&#xff1a;I2C \u63a7\u5236\u5668\u9a71\u52a8\u901a\u8fc7i2c_add_adapter\u6ce8\u518c\u9002\u914d\u5668&#xff08;i2c_adapter&#xff09;&#xff1b;<\/li>\n<li>\u8bbe\u5907\u6ce8\u518c&#xff1a;\u4ece\u8bbe\u5907\u6811\u89e3\u6790 I2C \u8bbe\u5907\u8282\u70b9&#xff0c;\u521b\u5efai2c_client\u5e76\u5173\u8054\u5230\u9002\u914d\u5668&#xff1b;<\/li>\n<li>\u9a71\u52a8\u5339\u914d&#xff1a;i2c_driver\u7684of_match_table\u4e0ei2c_client\u7684\u8bbe\u5907\u6811\u8282\u70b9\u5339\u914d&#xff0c;\u8c03\u7528 probe&#xff1b;<\/li>\n<li>\u6570\u636e\u4f20\u8f93&#xff1a;\u9a71\u52a8\u901a\u8fc7i2c_transfer\/i2c_smbus_read\/write\u5b8c\u6210\u6570\u636e\u6536\u53d1\u3002<\/li>\n<\/ul>\n<h4>3. I2C \u5b50\u7cfb\u7edf\u7684\u4e3b\u8981\u7ec4\u4ef6<\/h4>\n<ul>\n<li>i2c_adapter&#xff1a;\u8868\u793a I2C \u63a7\u5236\u5668&#xff08;\u9002\u914d\u5668&#xff09;&#xff0c;\u7ba1\u7406\u4e00\u6761 I2C \u603b\u7ebf&#xff0c;\u63d0\u4f9b\u65f6\u5e8f\u9a71\u52a8&#xff1b;<\/li>\n<li>i2c_client&#xff1a;\u8868\u793a\u603b\u7ebf\u4e0a\u7684 I2C \u8bbe\u5907&#xff0c;\u5305\u542b\u8bbe\u5907\u5730\u5740\u3001\u6240\u5c5e adapter\u3001\u8bbe\u5907\u6811\u4fe1\u606f&#xff1b;<\/li>\n<li>i2c_driver&#xff1a;I2C \u8bbe\u5907\u9a71\u52a8&#xff0c;\u5305\u542b\u5339\u914d\u8868\u3001probe\/remove\u3001\u6570\u636e\u4f20\u8f93\u63a5\u53e3&#xff1b;<\/li>\n<li>i2c_msg&#xff1a;I2C \u4f20\u8f93\u6d88\u606f\u7ed3\u6784\u4f53&#xff0c;\u63cf\u8ff0\u4f20\u8f93\u65b9\u5411\u3001\u5730\u5740\u3001\u6570\u636e\u957f\u5ea6\u3001\u6570\u636e\u7f13\u51b2\u533a&#xff1b;<\/li>\n<li>i2c-core&#xff1a;\u6838\u5fc3\u5c42&#xff0c;\u8d1f\u8d23 adapter\/client\/driver \u7684\u7ba1\u7406\u3001\u5339\u914d\u3001\u4f20\u8f93\u8c03\u5ea6\u3002<\/li>\n<\/ul>\n<h4>4. I2C \u8bbe\u5907\u9a71\u52a8\u5982\u4f55\u4e0e\u8bbe\u5907\u5339\u914d<\/h4>\n<ul>\n<li>\u8bbe\u5907\u6811\u5339\u914d&#xff08;\u4e3b\u6d41&#xff09;&#xff1a;i2c_driver\u7684of_match_table\u4e2dcompatible\u4e0e\u8bbe\u5907\u6811 I2C \u5b50\u8282\u70b9\u7684compatible\u5339\u914d&#xff1b;<\/li>\n<li>ID \u5339\u914d&#xff1a;i2c_driver\u7684id_table&#xff08;\u5305\u542b\u8bbe\u5907\u540d\/\u5730\u5740&#xff09;\u4e0ei2c_client\u7684name\/addr\u5339\u914d&#xff1b;<\/li>\n<li>\u540d\u79f0\u5339\u914d&#xff1a;i2c_driver \u7684 driver.name \u4e0e i2c_client \u7684 name \u5339\u914d&#xff1b;<br \/>\n\u5339\u914d\u6210\u529f\u540e&#xff0c;\u5185\u6838\u8c03\u7528 i2c_driver \u7684 probe \u51fd\u6570&#xff0c;\u4f20\u5165 i2c_client\u3002<\/li>\n<\/ul>\n<h4>5. \u5982\u4f55\u5728 I2C \u9a71\u52a8\u4e2d\u8fdb\u884c\u6570\u636e\u4f20\u8f93<\/h4>\n<p><span class=\"token comment\">\/\/ \u65b9\u5f0f1&#xff1a;i2c_transfer&#xff08;\u901a\u7528&#xff09;<\/span><br \/>\n<span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">i2c_msg<\/span> msgs<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u7b2c\u4e00\u6b65&#xff1a;\u8bfb\u5bc4\u5b58\u5668\u5730\u5740<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span> <span class=\"token punctuation\">.<\/span>addr <span class=\"token operator\">&#061;<\/span> client<span class=\"token operator\">-&gt;<\/span>addr<span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">.<\/span>flags <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">.<\/span>len <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">.<\/span>buf <span class=\"token operator\">&#061;<\/span> <span class=\"token operator\">&amp;<\/span>reg_addr <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u7b2c\u4e8c\u6b65&#xff1a;\u8bfb\u5bc4\u5b58\u5668\u6570\u636e<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span> <span class=\"token punctuation\">.<\/span>addr <span class=\"token operator\">&#061;<\/span> client<span class=\"token operator\">-&gt;<\/span>addr<span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">.<\/span>flags <span class=\"token operator\">&#061;<\/span> I2C_M_RD<span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">.<\/span>len <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">.<\/span>buf <span class=\"token operator\">&#061;<\/span> data_buf <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token function\">i2c_transfer<\/span><span class=\"token punctuation\">(<\/span>client<span class=\"token operator\">-&gt;<\/span>adapter<span class=\"token punctuation\">,<\/span> msgs<span class=\"token punctuation\">,<\/span> <span class=\"token function\">ARRAY_SIZE<\/span><span class=\"token punctuation\">(<\/span>msgs<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u65b9\u5f0f2&#xff1a;i2c_smbus&#xff08;\u7b80\u5316&#xff09;<\/span><br \/>\nu16 data <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">i2c_smbus_read_word_data<\/span><span class=\"token punctuation\">(<\/span>client<span class=\"token punctuation\">,<\/span> reg_addr<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260206075741-69859ef533695.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260206075741-69859ef56ad5b.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h3>\u4e94\u3001SPI \u5b50\u7cfb\u7edf<\/h3>\n<h4>1. SPI \u5b50\u7cfb\u7edf\u67b6\u6784<\/h4>\n<ul>\n<li>\u786c\u4ef6\u5c42&#xff1a;SPI \u63a7\u5236\u5668\u9a71\u52a8&#xff08;\u5982 spi-imx&#xff09;&#xff0c;\u5b9e\u73b0 SPI \u65f6\u5e8f&#xff08;CLK\/MOSI\/MISO\/CS&#xff09;\u3001\u5bc4\u5b58\u5668\u64cd\u4f5c&#xff1b;<\/li>\n<li>\u6838\u5fc3\u5c42&#xff1a;SPI \u6838\u5fc3&#xff08;spi-core&#xff09;&#xff0c;\u7ba1\u7406\u9002\u914d\u5668\u3001\u8bbe\u5907\u3001\u9a71\u52a8&#xff0c;\u63d0\u4f9b\u4f20\u8f93\u63a5\u53e3&#xff1b;<\/li>\n<li>\u8bbe\u5907\u5c42&#xff1a;spi_device&#xff08;SPI \u8bbe\u5907&#xff09;&#xff0c;\u5305\u542b\u7247\u9009\u53f7\u3001\u4f20\u8f93\u6a21\u5f0f\u3001\u901f\u7387\u3001\u8bbe\u5907\u6811\u4fe1\u606f&#xff1b;<\/li>\n<li>\u9a71\u52a8\u5c42&#xff1a;spi_driver&#xff08;SPI \u8bbe\u5907\u9a71\u52a8&#xff09;&#xff0c;\u5b9e\u73b0 probe\/remove\u3001\u6570\u636e\u4f20\u8f93\u903b\u8f91\u3002<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260206075741-69859ef58043a.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h4>2. SPI \u5b50\u7cfb\u7edf\u5b9e\u73b0&#xff08;\u6838\u5fc3\u903b\u8f91&#xff09;<\/h4>\n<ul>\n<li>\u63a7\u5236\u5668\u6ce8\u518c&#xff1a;SPI \u63a7\u5236\u5668\u9a71\u52a8\u901a\u8fc7spi_register_master\u6ce8\u518c\u4e3b\u63a7\u5236\u5668&#xff08;spi_master&#xff09;&#xff1b;<\/li>\n<li>\u8bbe\u5907\u6ce8\u518c&#xff1a;\u4ece\u8bbe\u5907\u6811\u89e3\u6790 SPI \u5b50\u8282\u70b9&#xff0c;\u521b\u5efaspi_device\u5e76\u5173\u8054\u5230spi_master&#xff1b;<\/li>\n<li>\u9a71\u52a8\u5339\u914d&#xff1a;spi_driver\u7684of_match_table\u4e0espi_device\u7684\u8bbe\u5907\u6811\u8282\u70b9\u5339\u914d&#xff0c;\u8c03\u7528 probe&#xff1b;<\/li>\n<li>\u6570\u636e\u4f20\u8f93&#xff1a;\u9a71\u52a8\u901a\u8fc7spi_transfer\/spi_write\/read\u5b8c\u6210\u6570\u636e\u6536\u53d1\u3002<\/li>\n<\/ul>\n<h4>3. SPI \u5b50\u7cfb\u7edf\u7684\u4e3b\u8981\u7ec4\u4ef6<\/h4>\n<ul>\n<li>spi_master&#xff1a;\u8868\u793a SPI \u63a7\u5236\u5668&#xff08;\u4e3b\u8bbe\u5907&#xff09;&#xff0c;\u7ba1\u7406\u4e00\u6761 SPI \u603b\u7ebf&#xff0c;\u63d0\u4f9b\u65f6\u5e8f\u9a71\u52a8&#xff1b;<\/li>\n<li>spi_device&#xff1a;\u8868\u793a SPI \u4ece\u8bbe\u5907&#xff0c;\u5305\u542b\u7247\u9009\u53f7\u3001\u4f20\u8f93\u901f\u7387\u3001\u6a21\u5f0f&#xff08;CPOL\/CPHA&#xff09;\u3001\u6240\u5c5e master&#xff1b;<\/li>\n<li>spi_driver&#xff1a;SPI \u8bbe\u5907\u9a71\u52a8&#xff0c;\u5305\u542b\u5339\u914d\u8868\u3001probe\/remove\u3001\u6570\u636e\u4f20\u8f93\u63a5\u53e3&#xff1b;<\/li>\n<li>spi_message&#xff1a;SPI \u4f20\u8f93\u6d88\u606f&#xff0c;\u5305\u542b\u591a\u4e2aspi_transfer&#xff0c;\u652f\u6301\u94fe\u5f0f\u4f20\u8f93&#xff1b;<\/li>\n<li>spi_transfer&#xff1a;\u5355\u4e2a SPI \u4f20\u8f93\u5355\u5143&#xff0c;\u63cf\u8ff0\u4f20\u8f93\u65b9\u5411\u3001\u6570\u636e\u957f\u5ea6\u3001\u7f13\u51b2\u533a\u3001\u7247\u9009\u63a7\u5236\u3002<\/li>\n<\/ul>\n<h4>4. SPI \u8bbe\u5907\u9a71\u52a8\u5982\u4f55\u4e0e\u8bbe\u5907\u5339\u914d<\/h4>\n<ul>\n<li>\u8bbe\u5907\u6811\u5339\u914d&#xff08;\u4e3b\u6d41&#xff09;&#xff1a;spi_driver\u7684of_match_table\u4e2dcompatible\u4e0e\u8bbe\u5907\u6811 SPI \u5b50\u8282\u70b9\u7684compatible\u5339\u914d&#xff1b;<\/li>\n<li>ID \u5339\u914d&#xff1a;spi_driver\u7684id_table&#xff08;\u8bbe\u5907\u540d&#xff09;\u4e0espi_device\u7684modalias\u5339\u914d&#xff1b;<\/li>\n<li>\u540d\u79f0\u5339\u914d&#xff1a;spi_driver \u7684 driver.name \u4e0e spi_device \u7684 modalias \u5339\u914d&#xff1b;<br \/>\n\u5339\u914d\u6210\u529f\u540e&#xff0c;\u5185\u6838\u8c03\u7528 spi_driver \u7684 probe \u51fd\u6570&#xff0c;\u4f20\u5165 spi_device\u3002<\/li>\n<\/ul>\n<h4>5. \u5982\u4f55\u5728 SPI \u9a71\u52a8\u4e2d\u8fdb\u884c\u6570\u636e\u4f20\u8f93<\/h4>\n<p><span class=\"token comment\">\/\/ \u6784\u9020\u4f20\u8f93\u7ed3\u6784\u4f53<\/span><br \/>\n<span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">spi_transfer<\/span> t <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span>tx_buf <span class=\"token operator\">&#061;<\/span> tx_buf<span class=\"token punctuation\">,<\/span> <span class=\"token comment\">\/\/ \u53d1\u9001\u7f13\u51b2\u533a<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span>rx_buf <span class=\"token operator\">&#061;<\/span> rx_buf<span class=\"token punctuation\">,<\/span> <span class=\"token comment\">\/\/ \u63a5\u6536\u7f13\u51b2\u533a<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span>len <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span>         <span class=\"token comment\">\/\/ \u4f20\u8f93\u957f\u5ea6<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span>speed_hz <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">1000000<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token comment\">\/\/ \u901f\u73871MHz<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span>cs_change <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span>   <span class=\"token comment\">\/\/ \u4f20\u8f93\u540e\u4e0d\u91ca\u653eCS<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">spi_message<\/span> msg<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token function\">spi_message_init<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>msg<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token function\">spi_message_add_tail<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>t<span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&amp;<\/span>msg<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/ \u6267\u884c\u4f20\u8f93<\/span><br \/>\n<span class=\"token function\">spi_sync<\/span><span class=\"token punctuation\">(<\/span>spi<span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&amp;<\/span>msg<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h3>\u516d\u3001\u8bbe\u5907\u6811\u4e0e\u9a71\u52a8\u5339\u914d<\/h3>\n<h4>1. \u8bbe\u5907\u6811\u4e2d\u7684 compatible \u5c5e\u6027\u6709\u4ec0\u4e48\u4f5c\u7528&#xff1f;<\/h4>\n<ul>\n<li>\u6838\u5fc3\u4f5c\u7528&#xff1a;\u9a71\u52a8\u4e0e\u8bbe\u5907\u7684\u5339\u914d\u5173\u952e\u5b57&#xff0c;\u662f\u8bbe\u5907\u6811\u5339\u914d\u7684\u6838\u5fc3\u4f9d\u636e&#xff1b;<\/li>\n<li>\u683c\u5f0f\u89c4\u5219&#xff1a;\u5b57\u7b26\u4e32\u683c\u5f0f\u4e3a \u201c\u5382\u5546\u540d&#xff0c;\u8bbe\u5907\u540d\u201d&#xff08;\u5982 \u201cnxp,s32k344-i2c\u201d&#xff09;&#xff0c;\u53ef\u5305\u542b\u591a\u4e2a\u5b57\u7b26\u4e32&#xff08;\u517c\u5bb9\u4e0d\u540c\u9a71\u52a8&#xff09;&#xff1b;<\/li>\n<li>\u5339\u914d\u903b\u8f91&#xff1a;\u9a71\u52a8\u7684of_match_table\u904d\u5386compatible\u5b57\u7b26\u4e32\u5217\u8868&#xff0c;\u53ea\u8981\u6709\u4e00\u4e2a\u5339\u914d\u5373\u89e6\u53d1 probe&#xff1b;<\/li>\n<li>\u517c\u5bb9\u6027&#xff1a;\u652f\u6301 \u201c\u5411\u4e0b\u517c\u5bb9\u201d&#xff08;\u5982\u65b0\u8bbe\u5907\u517c\u5bb9\u65e7\u9a71\u52a8\u7684compatible\u5b57\u7b26\u4e32&#xff09;\u3002<\/li>\n<\/ul>\n<h4>2. \u9a71\u52a8\u5982\u4f55\u83b7\u53d6\u8bbe\u5907\u6811\u4e2d\u7684\u5c5e\u6027<\/h4>\n<p>\u901a\u8fc7\u5185\u6838of_\u7cfb\u5217\u63a5\u53e3\u89e3\u6790&#xff1a;<\/p>\n<p><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">device_node<\/span> <span class=\"token operator\">*<\/span>np <span class=\"token operator\">&#061;<\/span> dev<span class=\"token operator\">-&gt;<\/span>of_node<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/ 1. \u83b7\u53d6\u6574\u578b\u5c5e\u6027<\/span><br \/>\nu32 reg_val<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token function\">of_property_read_u32<\/span><span class=\"token punctuation\">(<\/span>np<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;reg&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&amp;<\/span>reg_val<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/ 2. \u83b7\u53d6\u5b57\u7b26\u4e32\u5c5e\u6027<\/span><br \/>\n<span class=\"token keyword\">char<\/span> name<span class=\"token punctuation\">[<\/span><span class=\"token number\">32<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token function\">of_property_read_string<\/span><span class=\"token punctuation\">(<\/span>np<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;name&#034;<\/span><span class=\"token punctuation\">,<\/span> name<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/ 3. \u83b7\u53d6\u5730\u5740\u5c5e\u6027<\/span><br \/>\n<span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">resource<\/span> res<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token function\">of_address_to_resource<\/span><span class=\"token punctuation\">(<\/span>np<span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&amp;<\/span>res<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/ 4. \u83b7\u53d6\u6570\u7ec4\u5c5e\u6027<\/span><br \/>\nu32 arr<span class=\"token punctuation\">[<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token function\">of_property_read_u32_array<\/span><span class=\"token punctuation\">(<\/span>np<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;data-arr&#034;<\/span><span class=\"token punctuation\">,<\/span> arr<span class=\"token punctuation\">,<\/span> <span class=\"token number\">4<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h4>3. \u5982\u4f55\u5904\u7406\u8bbe\u5907\u6811\u4e2d\u7684 GPIO \u63cf\u8ff0<\/h4>\n<p>\u8bbe\u5907\u6811\u63cf\u8ff0\u683c\u5f0f&#xff1a;gpio &#061; &lt;&amp;gpio\u63a7\u5236\u5668 \u5f15\u811a\u53f7 \u6807\u5fd7&gt;;&#xff08;\u5982reset-gpio &#061; &lt;&amp;gpioa 5 GPIO_ACTIVE_LOW&gt;;&#xff09;&#xff1b;<br \/>\n\u9a71\u52a8\u89e3\u6790&#xff1a;<\/p>\n<p><span class=\"token comment\">\/\/ \u65b9\u5f0f1&#xff1a;\u76f4\u63a5\u83b7\u53d6GPIO\u7f16\u53f7<\/span><br \/>\n<span class=\"token keyword\">int<\/span> gpio <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">of_get_named_gpio<\/span><span class=\"token punctuation\">(<\/span>np<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;reset-gpio&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/ \u65b9\u5f0f2&#xff1a;\u83b7\u53d6gpio_desc&#xff08;\u63a8\u8350&#xff0c;\u652f\u6301\u66f4\u591a\u7279\u6027&#xff09;<\/span><br \/>\n<span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">gpio_desc<\/span> <span class=\"token operator\">*<\/span>desc <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">gpiod_get_from_of_node<\/span><span class=\"token punctuation\">(<\/span>np<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;reset-gpio&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                                               GPIOD_OUT_HIGH<span class=\"token punctuation\">,<\/span> <span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/ \u64cd\u4f5cGPIO<\/span><br \/>\n<span class=\"token function\">gpiod_set_value<\/span><span class=\"token punctuation\">(<\/span>desc<span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/ \u91ca\u653e<\/span><br \/>\n<span class=\"token function\">gpiod_put<\/span><span class=\"token punctuation\">(<\/span>desc<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260206075741-69859ef5c177e.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h3>\u4e03\u3001\u9a71\u52a8\u6846\u67b6\u7efc\u5408\u5e94\u7528<\/h3>\n<h4>1. \u5982\u4f55\u786e\u4fdd\u9a71\u52a8\u8d44\u6e90\u7684\u6b63\u786e\u91ca\u653e<\/h4>\n<ul>\n<li>\u8bbe\u5907\u7ba1\u7406\u63a5\u53e3&#xff08;devm_*&#xff09;&#xff1a;\u4f18\u5148\u4f7f\u7528devm_kzalloc\/devm_gpio_request\/devm_request_irq&#xff0c;\u5185\u6838\u81ea\u52a8\u5728\u8bbe\u5907\u5378\u8f7d\u65f6\u91ca\u653e\u8d44\u6e90&#xff0c;\u907f\u514d\u624b\u52a8\u6cc4\u6f0f&#xff1b;<\/li>\n<li>remove\/exit \u51fd\u6570&#xff1a;\u5728\u9a71\u52a8remove&#xff08;\u8bbe\u5907\u79fb\u9664&#xff09;\/exit&#xff08;\u6a21\u5757\u5378\u8f7d&#xff09;\u51fd\u6570\u4e2d&#xff0c;\u91ca\u653e\u672a\u4f7f\u7528 devm \u7684\u8d44\u6e90&#xff08;\u5982\u624b\u52a8\u5206\u914d\u7684\u5185\u5b58\u3001\u6ce8\u518c\u7684\u5b57\u7b26\u8bbe\u5907&#xff09;&#xff1b;<\/li>\n<li>\u9519\u8bef\u56de\u6eda&#xff1a;probe \u51fd\u6570\u4e2d&#xff0c;\u82e5\u67d0\u4e00\u6b65\u5931\u8d25&#xff0c;\u56de\u6eda\u5df2\u5206\u914d\u7684\u8d44\u6e90&#xff08;\u5982 goto \u6e05\u7406&#xff09;&#xff1b;<\/li>\n<\/ul>\n<p>\u793a\u4f8b&#xff1a;<\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">my_probe<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">void<\/span> <span class=\"token operator\">*<\/span>ptr <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">devm_kzalloc<\/span><span class=\"token punctuation\">(<\/span>dev<span class=\"token punctuation\">,<\/span> size<span class=\"token punctuation\">,<\/span> GFP_KERNEL<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> irq <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">devm_request_irq<\/span><span class=\"token punctuation\">(<\/span>dev<span class=\"token punctuation\">,<\/span> irq_num<span class=\"token punctuation\">,<\/span> handler<span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;irq&#034;<\/span><span class=\"token punctuation\">,<\/span> dev<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>irq <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">return<\/span> irq<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u81ea\u52a8\u91ca\u653eptr<\/span><br \/>\n    <span class=\"token comment\">\/\/ devm\u8d44\u6e90\u65e0\u9700\u624b\u52a8\u56de\u6eda<\/span><br \/>\n    <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">cdev<\/span> <span class=\"token operator\">*<\/span>cdev <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">cdev_alloc<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>cdev<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        ret <span class=\"token operator\">&#061;<\/span> <span class=\"token operator\">&#8211;<\/span>ENOMEM<span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">goto<\/span> err_cdev<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\nerr_cdev<span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u624b\u52a8\u91ca\u653e\u975edevm\u8d44\u6e90<\/span><br \/>\n    ret <span class=\"token operator\">&#061;<\/span> <span class=\"token operator\">&#8211;<\/span>ENOMEM<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">my_remove<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u4ec5\u91ca\u653e\u975edevm\u8d44\u6e90<\/span><br \/>\n    <span class=\"token function\">cdev_del<\/span><span class=\"token punctuation\">(<\/span>cdev<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>2. \u5982\u4f55\u5904\u7406\u9a71\u52a8\u7684\u4f9d\u8d56\u5173\u7cfb<\/h4>\n<ul>\n<li>\u6a21\u5757\u4f9d\u8d56&#xff1a;\u901a\u8fc7MODULE_DEPENDS\u58f0\u660e\u4f9d\u8d56\u6a21\u5757&#xff08;\u5982MODULE_DEPENDS(&#034;i2c-core&#034;)&#xff09;&#xff0c;\u6216modprobe\u65f6\u6307\u5b9a\u4f9d\u8d56&#xff1b;<\/li>\n<li>\u603b\u7ebf\u4f9d\u8d56&#xff1a;\u786e\u4fdd\u9a71\u52a8\u4f9d\u8d56\u7684\u603b\u7ebf&#xff08;\u5982 I2C\/spi&#xff09;\u5df2\u52a0\u8f7d&#xff0c;\u53ef\u5728 probe \u4e2d\u68c0\u67e5\u603b\u7ebf\u72b6\u6001&#xff1b;<\/li>\n<li>\u786c\u4ef6\u4f9d\u8d56&#xff1a;\u901a\u8fc7\u8bbe\u5907\u6811depends-on\u5c5e\u6027&#xff0c;\u786e\u4fdd\u4f9d\u8d56\u8bbe\u5907\u5148\u521d\u59cb\u5316&#xff1b;<\/li>\n<li>\u8fd0\u884c\u65f6\u4f9d\u8d56&#xff1a;\u4f7f\u7528devm_phandle_domain_attach\/clk_prepare_enable\u7b49\u63a5\u53e3&#xff0c;\u786e\u4fdd\u65f6\u949f\/\u7535\u6e90\/\u590d\u4f4d\u7b49\u4f9d\u8d56\u8d44\u6e90\u5c31\u7eea\u540e&#xff0c;\u518d\u521d\u59cb\u5316\u9a71\u52a8&#xff1b;<\/li>\n<li>\u52a0\u8f7d\u987a\u5e8f&#xff1a;\u901a\u8fc7initcall_level&#xff08;\u5982module_init\/late_initcall&#xff09;\u8c03\u6574\u9a71\u52a8\u52a0\u8f7d\u987a\u5e8f&#xff0c;\u6838\u5fc3\u4f9d\u8d56\u5148\u52a0\u8f7d\u3002<\/li>\n<\/ul>\n<h4>3. \u5982\u4f55\u8c03\u8bd5 Linux \u9a71\u52a8\u95ee\u9898<\/h4>\n<h5>&#xff08;1&#xff09;\u5185\u6838\u65e5\u5fd7\u8c03\u8bd5<\/h5>\n<ul>\n<li>\u6838\u5fc3\u5de5\u5177&#xff1a;dmesg\/cat \/var\/log\/kern.log&#xff0c;\u9a71\u52a8\u4e2d\u7528dev_info\/dev_err\/pr_debug\u6253\u5370\u65e5\u5fd7&#xff1b;<\/li>\n<li>\u52a8\u6001\u8c03\u8bd5&#xff1a;\u5f00\u542fCONFIG_DYNAMIC_DEBUG&#xff0c;\u901a\u8fc7echo &#034;file my_driver.c &#043;p&#034; &gt; \/sys\/kernel\/debug\/dynamic_debug\/control\u6253\u5f00\u8c03\u8bd5\u65e5\u5fd7\u3002<\/li>\n<\/ul>\n<h5>&#xff08;2&#xff09;\u786c\u4ef6\u8c03\u8bd5<\/h5>\n<ul>\n<li>\u793a\u6ce2\u5668\/\u903b\u8f91\u5206\u6790\u4eea&#xff1a;\u6293\u53d6\u603b\u7ebf\u65f6\u5e8f&#xff08;I2C\/SPI\/GPIO&#xff09;&#xff0c;\u6392\u67e5\u7535\u5e73\u5f02\u5e38\u3001\u65f6\u5e8f\u4e0d\u5339\u914d&#xff1b;<\/li>\n<li>\u4e07\u7528\u8868&#xff1a;\u6d4b\u91cf\u7535\u6e90\/\u5f15\u811a\u7535\u5e73&#xff0c;\u6392\u67e5\u77ed\u8def\u3001\u4f9b\u7535\u5f02\u5e38\u3002<\/li>\n<\/ul>\n<h5>&#xff08;3&#xff09;\u5185\u6838\u8c03\u8bd5\u5de5\u5177<\/h5>\n<ul>\n<li>kgdb&#xff1a;\u5185\u6838\u8fdc\u7a0b\u8c03\u8bd5&#xff0c;\u65ad\u70b9\u8c03\u8bd5\u9a71\u52a8\u4ee3\u7801&#xff1b;<\/li>\n<li>ftrace&#xff1a;\u8ddf\u8e2a\u51fd\u6570\u8c03\u7528&#xff08;\u5982 probe\/remove&#xff09;\u3001\u4e2d\u65ad\u6267\u884c\u65f6\u95f4&#xff1b;<\/li>\n<li>perf&#xff1a;\u5206\u6790\u9a71\u52a8\u6027\u80fd\u74f6\u9888&#xff08;\u5982 CPU \u5360\u7528\u3001\u51fd\u6570\u8017\u65f6&#xff09;&#xff1b;<\/li>\n<li>sysfs\/procfs&#xff1a;\u5bfc\u51fa\u9a71\u52a8\u72b6\u6001&#xff08;\u5982\/sys\/class\/gpio\/\/proc\/interrupts&#xff09;&#xff0c;\u67e5\u770b\u8d44\u6e90\u5360\u7528\u3002<\/li>\n<\/ul>\n<h5>&#xff08;4&#xff09;\u5e38\u89c1\u95ee\u9898\u6392\u67e5<\/h5>\n<ul>\n<li>\u5339\u914d\u5931\u8d25&#xff1a;\u68c0\u67e5\u8bbe\u5907\u6811compatible\u4e0e\u9a71\u52a8of_match_table\u662f\u5426\u4e00\u81f4&#xff1b;<\/li>\n<li>probe \u4e0d\u6267\u884c&#xff1a;\u68c0\u67e5\u603b\u7ebf\u662f\u5426\u6ce8\u518c\u3001\u8bbe\u5907\u662f\u5426\u5b58\u5728\u3001\u8d44\u6e90\u662f\u5426\u51b2\u7a81&#xff1b;<\/li>\n<li>\u6570\u636e\u4f20\u8f93\u5931\u8d25&#xff1a;\u68c0\u67e5\u786c\u4ef6\u65f6\u5e8f\u3001\u5730\u5740\u3001\u6821\u9a8c\u4f4d&#xff0c;\u6253\u5370\u4f20\u8f93\u6570\u636e\u7f13\u51b2\u533a\u3002<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Linux \u9a71\u52a8\u6838\u5fc3\u77e5\u8bc6<br \/>\n\u4e00\u3001Linux \u8bbe\u5907\u9a71\u52a8\u6a21\u578b<br \/>\n1. Linux \u8bbe\u5907\u9a71\u52a8\u6a21\u578b\u7684\u6838\u5fc3\u7ec4\u4ef6<br \/>\nkobject&#xff1a;\u6700\u57fa\u7840\u5bf9\u8c61&#xff0c;\u63d0\u4f9b\u5f15\u7528\u8ba1\u6570\u3001sysfs \u6587\u4ef6\u7cfb\u7edf\u5bfc\u51fa\u3001\u5bf9\u8c61\u751f\u547d\u5468\u671f\u7ba1\u7406&#xff1b;kset&#xff1a;kobject \u7684\u96c6\u5408&#xff0c;\u6309\u7c7b\u522b\u7ba1\u7406\u540c\u7c7b kobject&#xff08;\u5982\u6240\u6709\u8bbe\u5907\u5bf9\u8c61&#xff09;&#xff0c;\u652f\u6301\u7edf\u4e00\u4e8b\u4ef6\u5904\u7406&#xff1b;bus&#xff1a;\u603b\u7ebf\u62bd\u8c61&#xff08;\u5982 platform\/<\/p>\n","protected":false},"author":2,"featured_media":72794,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[174,58,371,43,305],"topic":[],"class_list":["post-72806","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-c","tag-linux","tag-371","tag-43","tag-305"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Linux \u9a71\u52a8\u6838\u5fc3\u77e5\u8bc6 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/72806.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Linux \u9a71\u52a8\u6838\u5fc3\u77e5\u8bc6 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"Linux \u9a71\u52a8\u6838\u5fc3\u77e5\u8bc6 \u4e00\u3001Linux \u8bbe\u5907\u9a71\u52a8\u6a21\u578b 1. 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