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Linux kernel variant from Analog Devices; see README.md for details
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commodo net: phy: adin: const-ify static data
Some bits of static data should have been made const from the start.
This change adds the const qualifier where appropriate.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
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README.md

Linux kernel - variant from Analog Devices, Inc.

Table of contents

  1. Description
  2. How to build
  3. Release branches
  4. Rebased branches
  5. Raspberry Pi branches
  6. Intel/Altera branches

Description

The Linux kernel in this repository is the Linux kernel from Xilinx together with drivers & patches applied from Analog Devices.

Details about the drivers that are of interest [and supported] by this repository can be found on the Analog Devices wiki. This readme focuses on details specific to how this code is structured/organized, how it was derived, etc.

For the current master, the last point in git history where things were merged from Xilinx is commit dd100de5395b65494a285a37a74ccceab4f39520. That commit (being a working branched) was merged into master via commit d1873cb62263704a93d904420daf5941f38599b4.

For legacy reasons, the xcomm_zynq branch is still available and should be in-sync with current master. That branch used to be the old master branch.

The current version of upstream Linux that Xilinx merged into their tree is from Linux 4.14. No other patches seem to have been added after this (by Xilinx).

How to build

For build instructions check the wiki.

Release branches

All release branches have the [YEAR]_R[NUM] format. There are some special release branches sometimes (like 2014_R2_altera), because it wasn't always possible to match the Linux repo between Xilinx & Intel/Altera.

Each release is matched with a release from the HDL repo. The branching name/model for the HDL repo differs a bit from the one in this repo, but the matching should be obvious. Therefore, each kernel in the release branches is be built using the toolchains from a specific version of Vivado & Quartus. A matching of these can be found on the wiki. Release branches can be built using other GCC toolchains, but in the official SD-card images provided, they will use the toolchains from Vivado/Quartus.

Rebased branches

Starting with branch adi-4.9.0 there are rebased branches. They're typically rebased branches from Xilinx with the ADI patches on top.

For adi-4.9.0 the base was branch xlnx_rebase_v4.9 at commit d45e196f59364e9f5eafe46027a7d2af349083974 in the ADI repo and commit 45e196f59364e9f5eafe46027a7d2af349083974 in the Xilinx repo. All ADI patches & drivers up to a specific point in time were cherry-picked to that branch from master. Note that since the adi-4.9.0 branch is the first rebased branch, it's not particularly the best rebase that could have been done, but it should provide some patches that are somewhat reasonable to take and apply on top of an upstream 4.9 kernel [after some polishing].

The current master branch has an equivalent adi-4.14.0. The common base/commit for this branch is commit https://github.com/analogdevicesinc/linux/commit/ad4cd988ba86ab0fb306d57f244b7eaa6cce79a4 from the xlnx_rebase_v4.14. Note that the same hash is present in the Xilinx. As such, the adi-4.14.0 is an incremental improvement for rebased branches in this repo.

Raspberry Pi branches

These provide a kernel that is good to run on a Raspberry Pi board. Some of the drivers that are developed internally are prototyped on top of this board.

The typical ones are rpi-4.0.y, rpi-4.9.y and rpi-4.14.y. The first 2 are upstream RPi branches merged with the ADI master branch from this repo. The 3rd is a rebased version of upstream rpi-4.14.y at some point in time.

These branches are a bit hard to maintain. They require constant conflict resolution whenever rebasing, so they rarely get updated. As such, rpi-4.14.y will probably be the last RPi branch. The idea is that with the next stable Linux kernel (4.19) support for RPi boards should be good enough in the upstream kernel, so that there won't be a need to keep these special branches.

Intel/Altera branches

Because the kernel versions that Intel/Altera were usually not in sync with Xilinx's, altera-* branches were created. These are altera_4.0, altera_4.4, altera_4.6, altera_4.9.

These branches are derived from the Intel/Altera linux kernel repo, together with some merged versions of old master branches.

The hope is that with the upcoming Linux 4.19, these branches would stop existing, since Intel/Altera seems to keep in sync their kernel version with more recent [non-LTS kernels]. Typically the releases/references that are provided for these boards should already be in the mainline kernel, so these branches should no longer be needed.

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