--- title: Kernel 5.12: Working to close the gap | daily.dev description: Collabora's contributions to Linux kernel 5.12 focus on closing the gap between vendor trees and mainline. Key highlights include improvements to the V4L2... canonical: https://daily.dev/posts/kernel-5-12-working-to-close-the-gap-5rztcsxpr twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Kernel 5.12: Working to close the gap | daily.dev og:description: Collabora's contributions to Linux kernel 5.12 focus on closing the gap between vendor trees and mainline. Key highlights include improvements to the V4L2... og:url: https://daily.dev/posts/kernel-5-12-working-to-close-the-gap-5rztcsxpr og:image: https://api.daily.dev/og/posts/5rzTcSXpR.png og:image:alt: Kernel 5.12: Working to close the gap og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Kernel 5.12: Working to close the gap **[Collabora Blog](https://daily.dev/sources/collabora)** · 6 min read · 0 upvotes · 0 comments ## Summary Collabora's contributions to Linux kernel 5.12 focus on closing the gap between vendor trees and mainline. Key highlights include improvements to the V4L2 Async notifier API (making it more consistent and harder to misuse), removal of a legacy V4L2 clock API in favor of the Common Clock Framework, a new TPM 2.0 I2C driver for Google's CR50 chip to improve ChromeOS device security, and the merging of an 84-patch omapdrm DSI cleanup series that removed 1000+ lines of code. Work on a fanotify-based filesystem error reporting API is also underway. KernelCI automated bisection helped identify Page Fault errors on the Tegra platform. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What changes were made to the V4L2 Async notifier API in Linux kernel 5.12? The V4L2 Async notifier API was refactored in Linux 5.12 to be more consistent, easier to use, and harder to misuse. As a side effect, a legacy V4L2-internal clock API was removed and its small number of users were migrated to the Common Clock Framework API. The work was contributed by Ezequiel Garcia from Collabora. _Kernel developers tracking V4L2 subsystem changes follow upstream discussions like these on daily.dev._ ### What is the CR50 I2C TPM driver added in Linux kernel 5.12? Linux 5.12 added a TPM 2.0 driver for the Google CR50 chip, which uses a customized I2C-based protocol. The driver enables communication with the CR50 firmware on Chromebook devices, improving user data and device security. It benefits ChromiumOS, the broader open-source community, and end-users relying on TPM-backed security features. _Developers working on ChromeOS or embedded Linux security can track driver upstream progress on daily.dev._ --- Tags: [#linux](https://daily.dev/tags/linux), [#chromeos](https://daily.dev/tags/chromeos) [View this post on daily.dev](https://daily.dev/posts/kernel-5-12-working-to-close-the-gap-5rztcsxpr) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Kernel 5.12: Working to close the gap","url":"https://daily.dev/posts/kernel-5-12-working-to-close-the-gap-5rztcsxpr","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/kernel-5-12-working-to-close-the-gap-5rztcsxpr"},"datePublished":"2026-08-11T08:55:09.666Z","dateModified":"2026-08-11T09:04:18.162Z","description":"Collabora's contributions to Linux kernel 5.12 focus on closing the gap between vendor trees and mainline. 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