{"id":286,"date":"2024-07-14T22:00:03","date_gmt":"2024-07-14T16:30:03","guid":{"rendered":"https:\/\/dctn.in\/?p=286"},"modified":"2024-07-14T22:00:04","modified_gmt":"2024-07-14T16:30:04","slug":"mdio-bus-architecture-in-linux","status":"publish","type":"post","link":"https:\/\/dctn.in\/index.php\/blog\/mdio-bus-architecture-in-linux\/","title":{"rendered":"MDIO BUS architecture in LINUX"},"content":{"rendered":"\n<p class=\"has-very-light-gray-to-cyan-bluish-gray-gradient-background has-background\">In Linux networking and hardware management, the MDIO (Management Data Input\/Output) bus is a communication interface used to manage and control Ethernet PHY (Physical Layer) devices. The MDIO bus allows the host system (such as a network interface controller or a switch controller) to interact with PHY devices for tasks like configuration, monitoring, and diagnostics. MDIO also know as Serial Management Interface. The\u00a0MDIO serial bus is a subset of the MII(Media-independent interface) that is used to transfer management information between MAC and PHY.\u00a0<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Key Components and Functionality:<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>PHY Devices<\/strong>:\n<ul class=\"wp-block-list\">\n<li>Ethernet PHY devices are responsible for transmitting and receiving Ethernet frames over the physical medium (such as twisted pair cables or fiber optics).<\/li>\n\n\n\n<li>Each PHY device has its own unique address on the MDIO bus, allowing the host to communicate with and control multiple PHYs connected to the same MDIO bus.<\/li>\n\n\n\n<li>i.e.  for this DP83822 phy device defined in linux\/drivers\/net\/phy\/dp83822.c<br><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"70\" class=\"wp-image-287\" style=\"width: 150px;\" src=\"https:\/\/dctn.in\/wp-content\/uploads\/2024\/07\/driver_code.png\" alt=\"\" srcset=\"https:\/\/dctn.in\/wp-content\/uploads\/2024\/07\/driver_code.png 530w, https:\/\/dctn.in\/wp-content\/uploads\/2024\/07\/driver_code-300x140.png 300w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/li>\n\n\n\n<li><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>MDIO Bus Interface<\/strong>:\n<ul class=\"wp-block-list\">\n<li>In Linux, the MDIO bus interface is typically implemented using drivers and kernel modules that manage communication between the host system and PHY devices.<\/li>\n\n\n\n<li>It provides functions to read and write PHY registers, which contain configuration settings and status information.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>MDIO Frame Format &#8212; Clause 22<\/strong> <strong>( Basic Communication Frame Format) <\/strong>\n<ul class=\"wp-block-list\">\n<li><a>Clause 22 defines the MDIO communication basic frame format<\/a> and it has following fields<\/li>\n\n\n\n<li><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"41\" class=\"wp-image-288\" style=\"width: 150px;\" src=\"https:\/\/dctn.in\/wp-content\/uploads\/2024\/07\/MDIO_MDC_Basic_Frame_Format.png\" alt=\"\" srcset=\"https:\/\/dctn.in\/wp-content\/uploads\/2024\/07\/MDIO_MDC_Basic_Frame_Format.png 475w, https:\/\/dctn.in\/wp-content\/uploads\/2024\/07\/MDIO_MDC_Basic_Frame_Format-300x82.png 300w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/li>\n\n\n\n<li>Description of each fields are :\n<ul class=\"wp-block-list\">\n<li>ST 2 bits Start of Frame (01 for Clause 22)<\/li>\n\n\n\n<li>OP 2 bits OP Code<\/li>\n\n\n\n<li>PHYADR 5 bits PHY Address<\/li>\n\n\n\n<li>REGADR 5 bits Register Address<\/li>\n\n\n\n<li>TA 2 bits Turnaround time to change bus ownership from STA to MMD if required<\/li>\n\n\n\n<li>DATA 16 bits Data<\/li>\n\n\n\n<li>Driven by STA during write<\/li>\n\n\n\n<li>Driven by MMD during read<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong><a>Clause 45<\/a> &#8211; (Extended MDIO Frame Format)<\/strong><\/li>\n\n\n\n<li><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"57\" class=\"wp-image-289\" style=\"width: 150px;\" src=\"https:\/\/dctn.in\/wp-content\/uploads\/2024\/07\/MDIO_extended_Frame_Format.png\" alt=\"\" srcset=\"https:\/\/dctn.in\/wp-content\/uploads\/2024\/07\/MDIO_extended_Frame_Format.png 452w, https:\/\/dctn.in\/wp-content\/uploads\/2024\/07\/MDIO_extended_Frame_Format-300x113.png 300w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/li>\n\n\n\n<li>below are the fields details of a particular frame  \n<ul class=\"wp-block-list\">\n<li>ST 2 bits Start of Frame (00 for Clause 45)<\/li>\n\n\n\n<li>OP 2 bits OP Code<\/li>\n\n\n\n<li>PHYADR 5 bits PHY Address<\/li>\n\n\n\n<li>DEVTYPE 5 bits Device Type<\/li>\n\n\n\n<li>TA 2 bits Turnaround time to change bus ownership from STA to MMD if required<\/li>\n\n\n\n<li>ADDR\/DATA 16 bits Address or Data<\/li>\n\n\n\n<li>Driven by STA for address<\/li>\n\n\n\n<li>Driven by STA during write<\/li>\n\n\n\n<li>Driven by MMD during read<\/li>\n\n\n\n<li>Driven by MMD during read-increment-address<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Usage Scenarios<\/strong>:\n<ul class=\"wp-block-list\">\n<li><strong>Auto-Negotiation<\/strong>: The MDIO bus is used during the auto-negotiation process between network devices to determine the highest possible speed and duplex mode supported by both ends of the link.<\/li>\n\n\n\n<li><strong>Link Monitoring<\/strong>: Allows the host to monitor link status, detect cable faults, and adjust settings dynamically.<\/li>\n\n\n\n<li><strong>PHY Configuration<\/strong>: Enables setting PHY-specific parameters such as speed, duplex mode, flow control settings, etc.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Linux Kernel Support<\/strong>:\n<ul class=\"wp-block-list\">\n<li>The Linux kernel provides MDIO bus drivers and a framework for managing PHY devices. These drivers are typically part of the networking subsystem and are responsible for initializing MDIO controllers and handling communication with PHYs.<br><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"117\" class=\"wp-image-290\" style=\"width: 150px;\" src=\"https:\/\/dctn.in\/wp-content\/uploads\/2024\/07\/MDIO_BUS_Init.png\" alt=\"\" srcset=\"https:\/\/dctn.in\/wp-content\/uploads\/2024\/07\/MDIO_BUS_Init.png 602w, https:\/\/dctn.in\/wp-content\/uploads\/2024\/07\/MDIO_BUS_Init-300x233.png 300w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/li>\n\n\n\n<li>MDIO bus initialized code present at below path drivers\/net\/phy\/mdio_bus.c <\/li>\n\n\n\n<li>Users can interact with the MDIO bus and PHY devices through utilities like <code>ethtool<\/code> and system libraries that expose MDIO bus operations.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">i.e. For Example<\/h3>\n\n\n\n<p>In practical uses, if you have a network interface card (NIC) with multiple Ethernet ports, each port might have its own PHY device connected via the MDIO bus. The Linux kernel&#8217;s MDIO bus drivers would facilitate communication between the NIC and these PHYs, allowing the kernel to configure network settings and monitor link status as needed.<\/p>\n\n\n\n<p>For more details about the Frame Format Please refer to following links <\/p>\n\n\n\n<p><a href=\"https:\/\/www.ieee802.org\">https:\/\/www.ieee802.org<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>In Linux networking and hardware management, the MDIO (Management Data Input\/Output) bus is a communication interface used to manage and control Ethernet PHY (Physical Layer) devices. The MDIO bus allows the host system (such as a network interface controller or a switch controller) to interact with PHY devices for tasks like configuration, monitoring, and diagnostics. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-286","post","type-post","status-publish","format-standard","hentry","category-blog"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"In Linux networking and hardware management, the MDIO (Management Data Input\/Output) bus is a communication interface used to manage and control Ethernet PHY (Physical Layer) devices. The MDIO bus allows the host system (such as a network interface controller or a switch controller) to interact with PHY devices for tasks like configuration, monitoring, and diagnostics.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"dctn.in\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/dctn.in\/index.php\/blog\/mdio-bus-architecture-in-linux\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.1.1\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_US\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Next Gen Innovation | DCTN - Reliable Communication\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"MDIO BUS architecture in LINUX - Next Gen Innovation | DCTN\" \/>\n\t\t<meta property=\"og:description\" content=\"In Linux networking and hardware management, the MDIO (Management Data Input\/Output) bus is a communication interface used to manage and control Ethernet PHY (Physical Layer) devices. The MDIO bus allows the host system (such as a network interface controller or a switch controller) to interact with PHY devices for tasks like configuration, monitoring, and diagnostics.\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/dctn.in\/index.php\/blog\/mdio-bus-architecture-in-linux\/\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/dctn.in\/wp-content\/uploads\/2024\/07\/cropped-logo_dctn.png\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/dctn.in\/wp-content\/uploads\/2024\/07\/cropped-logo_dctn.png\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2024-07-14T16:30:03+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2024-07-14T16:30:04+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"MDIO BUS architecture in LINUX - Next Gen Innovation | DCTN\" \/>\n\t\t<meta name=\"twitter:description\" content=\"In Linux networking and hardware management, the MDIO (Management Data Input\/Output) bus is a communication interface used to manage and control Ethernet PHY (Physical Layer) devices. The MDIO bus allows the host system (such as a network interface controller or a switch controller) to interact with PHY devices for tasks like configuration, monitoring, and diagnostics.\" \/>\n\t\t<meta name=\"twitter:image\" content=\"https:\/\/dctn.in\/wp-content\/uploads\/2024\/07\/cropped-logo_dctn.png\" \/>\n\t\t<script type=\"application\/ld+json\" class=\"aioseo-schema\">\n\t\t\t{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"BlogPosting\",\"@id\":\"https:\\\/\\\/dctn.in\\\/index.php\\\/blog\\\/mdio-bus-architecture-in-linux\\\/#blogposting\",\"name\":\"MDIO BUS architecture in LINUX - Next Gen Innovation | DCTN\",\"headline\":\"MDIO BUS architecture in LINUX\",\"author\":{\"@id\":\"https:\\\/\\\/dctn.in\\\/index.php\\\/author\\\/dctn-in\\\/#author\"},\"publisher\":{\"@id\":\"https:\\\/\\\/dctn.in\\\/#organization\"},\"image\":{\"@type\":\"ImageObject\",\"url\":\"https:\\\/\\\/dctn.in\\\/wp-content\\\/uploads\\\/2024\\\/07\\\/driver_code.png\",\"@id\":\"https:\\\/\\\/dctn.in\\\/index.php\\\/blog\\\/mdio-bus-architecture-in-linux\\\/#articleImage\",\"width\":530,\"height\":248},\"datePublished\":\"2024-07-14T22:00:03+05:30\",\"dateModified\":\"2024-07-14T22:00:04+05:30\",\"inLanguage\":\"en-US\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/dctn.in\\\/index.php\\\/blog\\\/mdio-bus-architecture-in-linux\\\/#webpage\"},\"isPartOf\":{\"@id\":\"https:\\\/\\\/dctn.in\\\/index.php\\\/blog\\\/mdio-bus-architecture-in-linux\\\/#webpage\"},\"articleSection\":\"Blog\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/dctn.in\\\/index.php\\\/blog\\\/mdio-bus-architecture-in-linux\\\/#breadcrumblist\",\"itemListElement\":[{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/dctn.in#listItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/dctn.in\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/dctn.in\\\/index.php\\\/category\\\/blog\\\/#listItem\",\"name\":\"Blog\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/dctn.in\\\/index.php\\\/category\\\/blog\\\/#listItem\",\"position\":2,\"name\":\"Blog\",\"item\":\"https:\\\/\\\/dctn.in\\\/index.php\\\/category\\\/blog\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/dctn.in\\\/index.php\\\/blog\\\/mdio-bus-architecture-in-linux\\\/#listItem\",\"name\":\"MDIO BUS architecture in LINUX\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/dctn.in#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/dctn.in\\\/index.php\\\/blog\\\/mdio-bus-architecture-in-linux\\\/#listItem\",\"position\":3,\"name\":\"MDIO BUS architecture in LINUX\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/dctn.in\\\/index.php\\\/category\\\/blog\\\/#listItem\",\"name\":\"Blog\"}}]},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/dctn.in\\\/#organization\",\"name\":\"dctn.in\",\"description\":\"Reliable Communication\",\"url\":\"https:\\\/\\\/dctn.in\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"url\":\"https:\\\/\\\/dctn.in\\\/wp-content\\\/uploads\\\/2024\\\/07\\\/cropped-logo_dctn.png\",\"@id\":\"https:\\\/\\\/dctn.in\\\/index.php\\\/blog\\\/mdio-bus-architecture-in-linux\\\/#organizationLogo\",\"width\":240,\"height\":240},\"image\":{\"@id\":\"https:\\\/\\\/dctn.in\\\/index.php\\\/blog\\\/mdio-bus-architecture-in-linux\\\/#organizationLogo\"}},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/dctn.in\\\/index.php\\\/author\\\/dctn-in\\\/#author\",\"url\":\"https:\\\/\\\/dctn.in\\\/index.php\\\/author\\\/dctn-in\\\/\",\"name\":\"dctn.in\",\"image\":{\"@type\":\"ImageObject\",\"@id\":\"https:\\\/\\\/dctn.in\\\/index.php\\\/blog\\\/mdio-bus-architecture-in-linux\\\/#authorImage\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/e14f24da79a5f74b011bc007fd57e9383da77ec09361c98e69e7fe0f7e455719?s=96&d=mm&r=g\",\"width\":96,\"height\":96,\"caption\":\"dctn.in\"}},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/dctn.in\\\/index.php\\\/blog\\\/mdio-bus-architecture-in-linux\\\/#webpage\",\"url\":\"https:\\\/\\\/dctn.in\\\/index.php\\\/blog\\\/mdio-bus-architecture-in-linux\\\/\",\"name\":\"MDIO BUS architecture in LINUX - Next Gen Innovation | DCTN\",\"description\":\"In Linux networking and hardware management, the MDIO (Management Data Input\\\/Output) bus is a communication interface used to manage and control Ethernet PHY (Physical Layer) devices. The MDIO bus allows the host system (such as a network interface controller or a switch controller) to interact with PHY devices for tasks like configuration, monitoring, and diagnostics.\",\"inLanguage\":\"en-US\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/dctn.in\\\/#website\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/dctn.in\\\/index.php\\\/blog\\\/mdio-bus-architecture-in-linux\\\/#breadcrumblist\"},\"author\":{\"@id\":\"https:\\\/\\\/dctn.in\\\/index.php\\\/author\\\/dctn-in\\\/#author\"},\"creator\":{\"@id\":\"https:\\\/\\\/dctn.in\\\/index.php\\\/author\\\/dctn-in\\\/#author\"},\"datePublished\":\"2024-07-14T22:00:03+05:30\",\"dateModified\":\"2024-07-14T22:00:04+05:30\"},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/dctn.in\\\/#website\",\"url\":\"https:\\\/\\\/dctn.in\\\/\",\"name\":\"dctn.in\",\"description\":\"Reliable Communication\",\"inLanguage\":\"en-US\",\"publisher\":{\"@id\":\"https:\\\/\\\/dctn.in\\\/#organization\"}}]}\n\t\t<\/script>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"MDIO BUS architecture in LINUX - Next Gen Innovation | DCTN","description":"In Linux networking and hardware management, the MDIO (Management Data Input\/Output) bus is a communication interface used to manage and control Ethernet PHY (Physical Layer) devices. The MDIO bus allows the host system (such as a network interface controller or a switch controller) to interact with PHY devices for tasks like configuration, monitoring, and diagnostics.","canonical_url":"https:\/\/dctn.in\/index.php\/blog\/mdio-bus-architecture-in-linux\/","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"BlogPosting","@id":"https:\/\/dctn.in\/index.php\/blog\/mdio-bus-architecture-in-linux\/#blogposting","name":"MDIO BUS architecture in LINUX - Next Gen Innovation | DCTN","headline":"MDIO BUS architecture in LINUX","author":{"@id":"https:\/\/dctn.in\/index.php\/author\/dctn-in\/#author"},"publisher":{"@id":"https:\/\/dctn.in\/#organization"},"image":{"@type":"ImageObject","url":"https:\/\/dctn.in\/wp-content\/uploads\/2024\/07\/driver_code.png","@id":"https:\/\/dctn.in\/index.php\/blog\/mdio-bus-architecture-in-linux\/#articleImage","width":530,"height":248},"datePublished":"2024-07-14T22:00:03+05:30","dateModified":"2024-07-14T22:00:04+05:30","inLanguage":"en-US","mainEntityOfPage":{"@id":"https:\/\/dctn.in\/index.php\/blog\/mdio-bus-architecture-in-linux\/#webpage"},"isPartOf":{"@id":"https:\/\/dctn.in\/index.php\/blog\/mdio-bus-architecture-in-linux\/#webpage"},"articleSection":"Blog"},{"@type":"BreadcrumbList","@id":"https:\/\/dctn.in\/index.php\/blog\/mdio-bus-architecture-in-linux\/#breadcrumblist","itemListElement":[{"@type":"ListItem","@id":"https:\/\/dctn.in#listItem","position":1,"name":"Home","item":"https:\/\/dctn.in","nextItem":{"@type":"ListItem","@id":"https:\/\/dctn.in\/index.php\/category\/blog\/#listItem","name":"Blog"}},{"@type":"ListItem","@id":"https:\/\/dctn.in\/index.php\/category\/blog\/#listItem","position":2,"name":"Blog","item":"https:\/\/dctn.in\/index.php\/category\/blog\/","nextItem":{"@type":"ListItem","@id":"https:\/\/dctn.in\/index.php\/blog\/mdio-bus-architecture-in-linux\/#listItem","name":"MDIO BUS architecture in LINUX"},"previousItem":{"@type":"ListItem","@id":"https:\/\/dctn.in#listItem","name":"Home"}},{"@type":"ListItem","@id":"https:\/\/dctn.in\/index.php\/blog\/mdio-bus-architecture-in-linux\/#listItem","position":3,"name":"MDIO BUS architecture in LINUX","previousItem":{"@type":"ListItem","@id":"https:\/\/dctn.in\/index.php\/category\/blog\/#listItem","name":"Blog"}}]},{"@type":"Organization","@id":"https:\/\/dctn.in\/#organization","name":"dctn.in","description":"Reliable Communication","url":"https:\/\/dctn.in\/","logo":{"@type":"ImageObject","url":"https:\/\/dctn.in\/wp-content\/uploads\/2024\/07\/cropped-logo_dctn.png","@id":"https:\/\/dctn.in\/index.php\/blog\/mdio-bus-architecture-in-linux\/#organizationLogo","width":240,"height":240},"image":{"@id":"https:\/\/dctn.in\/index.php\/blog\/mdio-bus-architecture-in-linux\/#organizationLogo"}},{"@type":"Person","@id":"https:\/\/dctn.in\/index.php\/author\/dctn-in\/#author","url":"https:\/\/dctn.in\/index.php\/author\/dctn-in\/","name":"dctn.in","image":{"@type":"ImageObject","@id":"https:\/\/dctn.in\/index.php\/blog\/mdio-bus-architecture-in-linux\/#authorImage","url":"https:\/\/secure.gravatar.com\/avatar\/e14f24da79a5f74b011bc007fd57e9383da77ec09361c98e69e7fe0f7e455719?s=96&d=mm&r=g","width":96,"height":96,"caption":"dctn.in"}},{"@type":"WebPage","@id":"https:\/\/dctn.in\/index.php\/blog\/mdio-bus-architecture-in-linux\/#webpage","url":"https:\/\/dctn.in\/index.php\/blog\/mdio-bus-architecture-in-linux\/","name":"MDIO BUS architecture in LINUX - Next Gen Innovation | DCTN","description":"In Linux networking and hardware management, the MDIO (Management Data Input\/Output) bus is a communication interface used to manage and control Ethernet PHY (Physical Layer) devices. The MDIO bus allows the host system (such as a network interface controller or a switch controller) to interact with PHY devices for tasks like configuration, monitoring, and diagnostics.","inLanguage":"en-US","isPartOf":{"@id":"https:\/\/dctn.in\/#website"},"breadcrumb":{"@id":"https:\/\/dctn.in\/index.php\/blog\/mdio-bus-architecture-in-linux\/#breadcrumblist"},"author":{"@id":"https:\/\/dctn.in\/index.php\/author\/dctn-in\/#author"},"creator":{"@id":"https:\/\/dctn.in\/index.php\/author\/dctn-in\/#author"},"datePublished":"2024-07-14T22:00:03+05:30","dateModified":"2024-07-14T22:00:04+05:30"},{"@type":"WebSite","@id":"https:\/\/dctn.in\/#website","url":"https:\/\/dctn.in\/","name":"dctn.in","description":"Reliable Communication","inLanguage":"en-US","publisher":{"@id":"https:\/\/dctn.in\/#organization"}}]},"og:locale":"en_US","og:site_name":"Next Gen Innovation | DCTN - Reliable Communication","og:type":"article","og:title":"MDIO BUS architecture in LINUX - Next Gen Innovation | DCTN","og:description":"In Linux networking and hardware management, the MDIO (Management Data Input\/Output) bus is a communication interface used to manage and control Ethernet PHY (Physical Layer) devices. The MDIO bus allows the host system (such as a network interface controller or a switch controller) to interact with PHY devices for tasks like configuration, monitoring, and diagnostics.","og:url":"https:\/\/dctn.in\/index.php\/blog\/mdio-bus-architecture-in-linux\/","og:image":"https:\/\/dctn.in\/wp-content\/uploads\/2024\/07\/cropped-logo_dctn.png","og:image:secure_url":"https:\/\/dctn.in\/wp-content\/uploads\/2024\/07\/cropped-logo_dctn.png","article:published_time":"2024-07-14T16:30:03+00:00","article:modified_time":"2024-07-14T16:30:04+00:00","twitter:card":"summary_large_image","twitter:title":"MDIO BUS architecture in LINUX - Next Gen Innovation | DCTN","twitter:description":"In Linux networking and hardware management, the MDIO (Management Data Input\/Output) bus is a communication interface used to manage and control Ethernet PHY (Physical Layer) devices. The MDIO bus allows the host system (such as a network interface controller or a switch controller) to interact with PHY devices for tasks like configuration, monitoring, and diagnostics.","twitter:image":"https:\/\/dctn.in\/wp-content\/uploads\/2024\/07\/cropped-logo_dctn.png"},"aioseo_meta_data":{"post_id":"286","title":null,"description":null,"keywords":null,"keyphrases":{"focus":{"keyphrase":"","score":0,"analysis":{"keyphraseInTitle":{"score":0,"maxScore":9,"error":1}}},"additional":[]},"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":"","og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"BlogPosting","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":"-1","robots_max_videopreview":"-1","robots_max_imagepreview":"large","priority":null,"frequency":"default","local_seo":null,"breadcrumb_settings":null,"limit_modified_date":false,"ai":null,"created":"2024-07-14 16:30:04","updated":"2025-08-17 16:21:15","seo_analyzer_scan_date":null,"focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"aioseo_breadcrumb":"<div class=\"aioseo-breadcrumbs\"><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/dctn.in\" title=\"Home\">Home<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/dctn.in\/index.php\/category\/blog\/\" title=\"Blog\">Blog<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\tMDIO BUS architecture in LINUX\n\t\t<\/span><\/div>","aioseo_breadcrumb_json":[{"label":"Home","link":"https:\/\/dctn.in"},{"label":"Blog","link":"https:\/\/dctn.in\/index.php\/category\/blog\/"},{"label":"MDIO BUS architecture in LINUX","link":"https:\/\/dctn.in\/index.php\/blog\/mdio-bus-architecture-in-linux\/"}],"_links":{"self":[{"href":"https:\/\/dctn.in\/index.php\/wp-json\/wp\/v2\/posts\/286","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dctn.in\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dctn.in\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dctn.in\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dctn.in\/index.php\/wp-json\/wp\/v2\/comments?post=286"}],"version-history":[{"count":2,"href":"https:\/\/dctn.in\/index.php\/wp-json\/wp\/v2\/posts\/286\/revisions"}],"predecessor-version":[{"id":292,"href":"https:\/\/dctn.in\/index.php\/wp-json\/wp\/v2\/posts\/286\/revisions\/292"}],"wp:attachment":[{"href":"https:\/\/dctn.in\/index.php\/wp-json\/wp\/v2\/media?parent=286"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dctn.in\/index.php\/wp-json\/wp\/v2\/categories?post=286"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dctn.in\/index.php\/wp-json\/wp\/v2\/tags?post=286"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}