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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2026-08-24 08:46:03 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2026-08-24 08:46:03 -0700 |
| commit | cf9610f9116d55c5a66ef9f1faecacabd93a9322 (patch) | |
| tree | 757a3d280760c654767631cab5ad8af2d86d1848 /Documentation/process/contribution-maturity-model.rst | |
| download | linux-stable-cf9610f9116d55c5a66ef9f1faecacabd93a9322.tar.gz linux-stable-cf9610f9116d55c5a66ef9f1faecacabd93a9322.zip | |
Merge tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrlgrafted
Pull pin control updates from Linus Walleij:
"Core changes:
- Use the non-blocking mux_state_try_select() in the generic MUX pin
control back-end
- Free pin maps on pinctrl_generic_to_map() failure in the core
helpers
New hardware pin control:
- Qualcomm Maili TLMM SoC, PMG1110 PMIC, and Eliza LPASS LPI TLMM SoC
(this is for the low power audio, LPASS = Low Power Audio SubSystem
portions)
- Upboard support on top of the Intel pin controller
- Apple T6030 and T6031 support (just compatible strings)
- Samsung Exynos 8855 SoC
- Mediatek MT6858 SoC
- Rockchip RK3308B and RV1106 SoCs
- Airoha EN7523 and AN7563 SoCs
Improvements:
- Qualcomm TLMM GPIOs are unconditionally marked as wakeup capable
- Qualcomm improvements on top of the Qualcomm PDC (power domain
controller) irqchip improvements from tglx:s tree
- Qualcomm IPQ806x and IPQ9650 non-urgent pin grop fixups
- The NPCM8xx driver has been put into shape fixing many pin and
group definitions
- Some non-urgent Tegra 264 pin assignments are fixed up
- Some non-urgent fixups to Airoha AN7581 and AN7583 registers and
pin assignments, missing features etc"
* tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (130 commits)
dt-bindings: pinctrl: Convert TI DA850 pupd to DT schema
pinctrl: meson: sync some modify from A4
pinctrl: meson: a4: Add input enable pin configuration
pinctrl: realtek: rtd1625: remove unused group name spdif_sel
pinctrl: realtek: rtd1625: fix base_bit for VE4 GPIO 13
dt-bindings: pinctrl: microchip,pic32mzda-pinctrl: Convert to DT schema
Revert "Merge branch 'ib-rsk7204' into devel"
pinctrl: rockchip: Add RV1106 pinctrl support
dt-bindings: pinctrl: rockchip: Add RV1106 compatible
pinctrl: rockchip: Decode drive strength in the get function
pinctrl: fix PINCTRL_GENERIC_MUX not always being selectable
pinctrl: airoha: add support of an7563 SoC
dt-bindings: pinctrl: airoha: add support of an7563 pin controller
pinctrl: airoha: try to find chip scu node by phandle first
pinctrl: airoha: add support of en7523 SoC
dt-bindings: pinctrl: airoha: add support of en7523 pin controller
pinctrl: airoha: an7583: add support for olt pinmux
pinctrl: airoha: an7583: add support for pon_alt pinmux
pinctrl: airoha: an7583: add support for npu_uart pinmux
dt-bindings: pinctrl: airoha: an7583: add missed features
...
Diffstat (limited to 'Documentation/process/contribution-maturity-model.rst')
| -rw-r--r-- | Documentation/process/contribution-maturity-model.rst | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/Documentation/process/contribution-maturity-model.rst b/Documentation/process/contribution-maturity-model.rst new file mode 100644 index 000000000..b87ab34de --- /dev/null +++ b/Documentation/process/contribution-maturity-model.rst @@ -0,0 +1,109 @@ +.. SPDX-License-Identifier: GPL-2.0 + +======================================== +Linux Kernel Contribution Maturity Model +======================================== + + +Background +========== + +As a part of the 2021 Linux Kernel Maintainers’ Summit, there was a +`discussion <https://lwn.net/Articles/870581/>`_ about the challenges in +recruiting kernel maintainers as well as maintainer succession. Some of +the conclusions from that discussion included that companies which are a +part of the Linux Kernel community need to allow engineers to be +maintainers as part of their job, so they can grow into becoming +respected leaders and eventually, kernel maintainers. To support a +strong talent pipeline, developers should be allowed and encouraged to +take on upstream contributions such as reviewing other people’s patches, +refactoring kernel infrastructure, and writing documentation. + +To that end, the Linux Foundation Technical Advisory Board (TAB) +proposes this Linux Kernel Contribution Maturity Model. These common +expectations for upstream community engagement aim to increase the +influence of individual developers, increase the collaboration of +organizations, and improve the overall health of the Linux Kernel +ecosystem. + +The TAB urges organizations to continuously evaluate their Open Source +maturity model and commit to improvements to align with this model. To +be effective, this evaluation should incorporate feedback from across +the organization, including management and developers at all seniority +levels. In the spirit of Open Source, we encourage organizations to +publish their evaluations and plans to improve their engagement with the +upstream community. + +Level 0 +======= + +* Software Engineers are not allowed to contribute patches to the Linux + kernel. + + +Level 1 +======= + +* Software Engineers are allowed to contribute patches to the Linux + kernel, either as part of their job responsibilities or on their own + time. + +Level 2 +======= + +* Software Engineers are expected to contribute to the Linux Kernel as + part of their job responsibilities. +* Software Engineers will be supported to attend Linux-related + conferences as a part of their job. +* A Software Engineer’s upstream code contributions will be considered + in promotion and performance reviews. + +Level 3 +======= + +* Software Engineers are expected to review patches (including patches + authored by engineers from other companies) as part of their job + responsibilities +* Contributing presentations or papers to Linux-related or academic + conferences (such those organized by the Linux Foundation, Usenix, + ACM, etc.), are considered part of an engineer’s work. +* A Software Engineer’s community contributions will be considered in + promotion and performance reviews. +* Organizations will regularly report metrics of their open source + contributions and track these metrics over time. These metrics may be + published only internally within the organization, or at the + organization’s discretion, some or all may be published externally. + Metrics that are strongly suggested include: + + * The number of upstream kernel contributions by team or organization + (e.g., all people reporting up to a manager, director, or VP). + * The percentage of kernel developers who have made upstream + contributions relative to the total kernel developers in the + organization. + * The time interval between kernels used in the organization’s servers + and/or products, and the publication date of the upstream kernel + upon which the internal kernel is based. + * The number of out-of-tree commits present in internal kernels. + +Level 4 +======= + +* Software Engineers are encouraged to spend a portion of their work + time focused on Upstream Work, which is defined as reviewing patches, + serving on program committees, improving core project infrastructure + such as writing or maintaining tests, upstream tech debt reduction, + writing documentation, etc. +* Software Engineers are supported in helping to organize Linux-related + conferences. +* Organizations will consider community member feedback in official + performance reviews. + +Level 5 +======= + +* Upstream kernel development is considered a formal job position, with + at least a third of the engineer’s time spent doing Upstream Work. +* Organizations will actively seek out community member feedback as a + factor in official performance reviews. +* Organizations will regularly report internally on the ratio of + Upstream Work to work focused on directly pursuing business goals. |
