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---
title: Linux Kernel 5.5 | daily.dev
description: Collabora's engineers contributed to Linux Kernel 5.5 across multiple subsystems. Key work includes fixing suspend support in the Broadcom brcmfmac WiFi driver...
canonical: https://daily.dev/posts/linux-kernel-5-5-odwjnnrge
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og:title: Linux Kernel 5.5 | daily.dev
og:description: Collabora's engineers contributed to Linux Kernel 5.5 across multiple subsystems. Key work includes fixing suspend support in the Broadcom brcmfmac WiFi driver...
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# Linux Kernel 5.5

**[Collabora Blog](https://daily.dev/sources/collabora)** · 4 min read · 0 upvotes · 0 comments

## Summary

Collabora's engineers contributed to Linux Kernel 5.5 across multiple subsystems. Key work includes fixing suspend support in the Broadcom brcmfmac WiFi driver for i.MX 6 platforms, improvements to the Panfrost open-source Arm Mali GPU driver, VPU hantro driver cleanups, DRM bus format negotiation groundwork for display pipelines, I3C maintenance, virtual media controller (vimc) cleanup, Rockchip RK3288 gamma LUT support for Night Mode, and removal of legacy TI WiLink serial transport users in favor of serdev-based hci_ll.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://www.collabora.com/news-and-blog/news-and-events/linux-kernel-5.5.html>

## Questions this post answers

### What did Collabora contribute to the Linux 5.5 kernel for Rockchip RK3288?

Collabora added gamma LUT support for Rockchip RK3288 SoCs in Linux 5.5. This feature enables compositors to implement display Night Mode. Additionally, a register access bug was fixed in the Rockchip PCI driver.

_Developers working on Rockchip display pipelines track kernel subsystem changes like these on daily.dev._

### What is the status of DRM bus format negotiation in Linux 5.5?

Linux 5.5 includes foundational groundwork for DRM bus format negotiation between pipeline components. Before this work, bus format selection was either static or handled via ad-hoc solutions in individual display controller drivers. The effort was not completed in 5.5 and was set to continue in the next release.

_Engineers building DRM display drivers can follow kernel subsystem progress on daily.dev._

---

Tags: [#linux](https://daily.dev/tags/linux), [#arm](https://daily.dev/tags/arm)

[View this post on daily.dev](https://daily.dev/posts/linux-kernel-5-5-odwjnnrge)

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