contribution – Bootlin

Adding support for the MAX7360 keypad controller in the Linux kernel

MAX7360 Among all activities I’ve been doing at Bootlin during the past few months, one has been to add support for the Maxim MAX7360 Key-Switch Controller and LED Driver/GPIOs chip to the Linux kernel. Together with my colleague Kamel Bouhara, we developed Linux kernel device drivers to support it and upstreamed them to the mainline kernel. The full set of drivers have been merged in the upstream Linux kernel, and will be available in the upcoming Linux 6.18 release.

In this blog post, we will share some details on how this hardware works, and how it is now supported by the Linux kernel.

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Linux 6.17 released, Bootlin contributions inside

Penguin coding, AI generated Linux 6.17 was released a bit over a week ago, and as usual LWN.net gave the best summary of the new features and important changes in this release: part 1, part 2.

As usual, Bootlin contributed to this kernel, with a total of 98 patches authored by Bootlin engineers, but also another 94 patches that were reviewed/merged by Bootlin engineers, mostly by Alexandre Belloni (RTC and I3C maintainer, reviewed/merged 58 patches), Miquèl Raynal (MTD co-maintainer, reviewed/merged 20 patches) and Grégory Clement (Marvell EBU platform maintainer, reviewed/merged 8 patches).

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Linux 6.16 released, Bootlin contributions

Penguin coding, AI generated Linux 6.16 was released last Sunday, and as usual LWN provides the best coverage of what’s new: part 1 and part 2, as well as the KernelNewbies.org page for this release.

This time around, the engineers at Bootlin contributed 89 patches to the 6.16 release, but also as maintainers, they reviewed/merged 117 patches from other contributors!

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Linux 6.15 released, Bootlin contributions inside

Penguin coding, AI generated Linux 6.15 has been released last Sunday, and we as usual encourage our readers to look at the LWN summaries of the merge window (part 1, part 2) for a good summary. CNX-Software also has a summary more oriented towards hardware support for ARM and RISC-V platforms.

On our side, we have been quite active in this release cycle, with no less than 145 commits from Bootlin engineers merged. Also, our engineers who maintain various subsystems in the Linux kernel reviewed and merged a total of 104 patches from other contributors.

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Linux 6.14 released, Bootlin contributions inside

Penguin coding, AI generated Linux 6.14 was released last week, and as usual, we recommend checking out the LWN articles covering the 6.14 merge window (part 1, part 2) to get a good sense of the main new features and updates in this release.

Bootlin engineers have once again been busy contributing to this kernel release, with 125 commits authored by Bootlin engineers, and 60 patches reviewed and merged by Bootlin engineers who are maintainers of specific parts of the Linux kernel.

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Linux 6.11 released, Bootlin contributions inside

Linux 6.11 has been released a week ago, the day before Open Source Summit Europe started, but as a large part of the Bootlin team was attending this conference and the immediately following Linux Plumbers conference, we are only posting now our usual blog post about our Linux 6.11 contributions.

As usual, we warmly recommend our readers to look at the articles from LWN.net covering the 6.11 merge window (part 1, part 2) to get a good high-level overview of the major new features and hardware support added in 6.11. CNX-Software also has a useful article on the 6.11 features relevant for embedded platforms.

From a Bootlin perspective, we contributed a total of 120 commits in this release, making us the 19th contributing company by number of commits, worldwide, according to the statistics. In addition to those 120 commits authored by Bootlin engineers, we reviewed and merged 76 patches from other contributors, as part of the Linux kernel maintainer role of several Bootlin engineers (Alexandre Belloni as the RTC and I3C maintainers, Miquèl Raynal as the MTD co-maintainer, and Grégory Clement as the Marvell platform maintainer).

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Linux 6.10 released, Bootlin contributions inside

Linux 6.10 was released last Sunday, following its now well-known release cadence. As usual, head over to LWN.net to have some good summary of the important features merged in this kernel release: part 1 and part 2.

LWN also published an article on statistics of the 6.10 release cycle, and Bootlin shows up in the most active employers by changed lines, with 7746 lines changed by Bootlin engineers. According to ths Kernel Patch Statistics site, we contributed 110 changes, putting us as the 19th contributing company (counting “Unknown” and “Hobbyists” as companies).

Also, in addition to the 110 patches we contributed, some of our engineers are also maintainers of different subsystems, and as such they review/merge patches contributed by others:

Alexandre Belloni reviewed/merged 19 patches for the I3C and RTC subsystems which he maintains
Grégory Clement reviewed/merged 14 patches for the Marvell ARM and ARM64 platforms that he maintains
Miquèl Raynal reviewed/merged 12 patches for the MTD subsystem, which he co-maintains

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Linux 6.9 released, Bootlin contributions inside!

Linux 6.9 was released last Sunday, and as usual we refer our readers to the excellent LWN.net coverage of the Linux 6.9 merge window (part 1 and part 2) to get a good overall picture of the improvements and new features brought by this release.

On our side, we contributed a total of 119 commits authored by Bootlin engineers, but we also merged a total of 95 patches from other contributors, as several Bootlin engineers as also maintainers of various drivers/subsystems in the Linux kernel.

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Yocto 5.0 Scarthgap released, Bootlin contributions inside

Yocto Project Summit The latest release of the Yocto Project, version 5.0, code named Scarthgap has been published a few days ago. The release notes provide the best summary of what’s new in this release. Being a Long Term Support (LTS) release, it will be maintained during 4 years with bug fixes and security updates, which makes this release particularly important for a large number of embedded Linux projects and products.

At Bootlin, we are using Yocto for a large fraction of the Linux Board Support Packages that we develop, maintain and upgrade for our customers. But we’re not only users of Yocto: we’re also contributors and maintainers. In this blog post, we’ll highlight our contributions to this release, which take various forms.

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Linux 6.8 released, Bootlin contributions

The Linux 6.8 kernel has been released on March 10 by Linus Torvalds. As usual, we definitely recommend the coverage by LWN of the merge window for this release cycle to get a good grasp on the most important new features: first half and second half. Some work from Bootlin is briefly mentioned in those articles, such as the support for Lantiq PEF2256 (FALC56) framers, Lantiq PEF2256 (FALC56) pin controllers, and Techwell TW9900 video decoders.

With a total of 135 commits contributed by Bootlin engineers during this release cycle, we have been much more active than for the previous 6.7 release. This allows Bootlin to show in the recently published Development statistics for 6.8, as the 17th contributing company by number of commits, and 13th contributing company by number of changed lines.

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