OpenEmbedded BSP layer for Rockchip boards

About:

The purpose of this layer is to provide OpenEmbedded BSP support for
Rockchip-based devices using upstream sources as much as possible.

Dependencies:

URI: git://git.openembedded.org/openembedded-core
layers: meta
branch: matched branches (e.g. master, sumo, ...)

URI: git://git.yoctoproject.org/meta-arm
layers: meta-arm, meta-arm-toolchain
branch: matched branches (e.g. master, sumo, ...)

Status of supported boards:

builds and boots wic image:
	nanopi-m4
	nanopi-m4-2gb
	rock-pi-e
	rock-pi-4a
	rock-pi-4b
	rock-pi-4c
	rock64
	tinker-board
	tinker-board-s
	vyasa-rk3288
	firefly-rk3288
	nanopi-r4s
	rock-5b
	nanopi-r2s
	nanopi-m4b
	rock-pi-s
	rock-5a
builds:
	marsboard-rk3066
	radxarock
	rock2-square

Notes:

The latest ddr initializer for the rk3308 platform (currently only
used by the rock-pi-s machine) does not output diagnostic messages
to uart0. This causes a bunch of gibberish to be printed to the
console window which only becomes legible once the linux kernel
starts. I.e. the console output of the ddr initialization routine,
as well as u-boot is lost. An older version of this same binary
blob does, however, support output to uart0 (making its diagnostic
messages as well as u-boot available on the console). By default
the build assumes the user would like to see these message and be
able to have the option to interact with u-boot. Iow: for the
rock-pi-s an older version of rkbin is used.

If, however, the user would prefer to use the latest binary ddr
initializer from rkbin, simply set:

	RKBIN_RK3308_LATEST = "1"

in the configuration (e.g. conf/local.conf).

Maintenance:

Please send pull requests, patches, comments, or questions to the
yocto mailing list (yocto@lists.yoctoproject.org) CCing the maintainer

When sending patches, please make sure the email subject line includes
"[meta-rockchip][PATCH]" and follow the community's patch submission
guidelines, as described in:
	https://www.openembedded.org/wiki/Commit_Patch_Message_Guidelines
	https://www.openembedded.org/wiki/How_to_submit_a_patch_to_OpenEmbedded

Please send changes to the yocto mailing list with [meta-rockchip] in the subject line,
cc'ing the maintainer.

This can be configured within the repository with the following commands:

	git config sendemail.to yocto@lists.yoctoproject.org
	git config sendemail.cc twoerner@gmail.com
	git config format.subjectprefix "meta-rockchip] [PATCH"

Then, to send your most recent commit (i.e. just one patch),
please use something like:

	git format-patch -M -1
	git send-email <your patch file>

Maintainer:

Trevor Woerner <twoerner@gmail.com>

Brief History:

2014 April
	- originally started by Julien Chauveau
	- Romain Perier joins
2014 Sep
	- Julien leaves
2015 Aug
	- Trevor Woerner joins
2017 Mar
	- developers from Rockchip fork this layer see:
		https://github.com/rockchip-linux/meta-rockchip.git
		http://rockchip.wikidot.com/yocto-user-guide
2017 May
	- Romain leaves
2018 Feb
	- Rockchip developers abandon their fork for buildroot
		http://opensource.rock-chips.com/wiki_Buildroot