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kernel: fix missing device tree, switch to mainline

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- Add back missing device tree definitions in machine files
- Switch to mainline kernel by default
- Add description to switch back to sunxi versions in README

Signed-off-by: Jens Lucius <info@jenslucius.com>
This commit is contained in:
Jens Lucius
2015-06-16 16:33:52 +02:00
parent 207b25ecf1
commit 8107abbdee
32 changed files with 24 additions and 9 deletions
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13
README.md
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@ -15,6 +15,19 @@ Maintainers:
* Enrico Butera <ebutera@users.sourceforge.net>
* Sergey Lapin <slapin@ossfans.org>
Kernel / U-Boot Version
===========
Most Allwinner devices and hardware are supported in mainline kernel and U-Boot, so this layer builds mainline by default.
There is a custom U-Boot and Kernel version for sunxi devices which includes some special drivers not mainlined.
These versions are rather old (3.4 for kernel and 2014.04 for U-Boot), but may support more functions and devices than current mainline
If you want to switch back to sunxi versions for some reasons (no device tree available, unsupported hardware), change the file
/conf/machine/include/sunxi.inc
and set "PREFERRED_PROVIDER_u-boot" and "PREFERRED_PROVIDER_virtual/bootloader" to "u-boot-sunxi" and PREFERRED_PROVIDER_virtual/kernel to "linux-sunxi".
If you already have built the mainline versions it might be necessary to reset the build directories with:
bitbake -c clean linux
bitbake -c clean u-boot
Performance