[PATCH V4 0/7] Add Additional Boards and Features to RGxx3

[Chris Morgan <macroalpha82@gmail.com>]

From: Chris Morgan <macromorgan@hotmail.com>

The RGxx3 is a pseudo-device for U-Boot that works for every Anbernic
RGxx3 series device on the market. Add support for another series of
very similar devices from Powkiddy.

Changes since V3:
 - Fixed a bug with else/else if logic for board detection (changed
   a second incorrect "if" to the proper "else if").

Changes since V2:
 - Modify the mach-rockchip level rockchip_dnl_key_pressed() so that
   we can also call it in SPL mode and eliminate the board specific
   function. This requires adding ADC support to SPL. Additionally,
   I had to change the regulator for the saradc to a fixed regulator
   and add GPIO and regulator support to SPL.
 - Move the board specific board_rng_seed to the mach-rockchip level
   board file so that other rockchip boards with a hardware RNG can
   benefit. This should only be called if both the Rockchip
   hardware RNG as well as the rng seed functions are enabled.
 - Add two new boards (the RG-ARC-D and RG-ARC-S). I removed the
   previous code review due to the extensive changes made.

Changes since V1:
 - Update verbiage around function button to say "recovery" mode
   instead of calling it "maskrom" mode, which has a specific
   meaning. Also note that recovery function was done in a board
   specific manner to ensure it can run early.
 - Update board level documentation for the RGxx3.

Chris Morgan (7):
  board: rockchip: Refactor panel auto-detect code
  spl: Add Kconfig options for ADC
  rockchip: boot_mode: Allow rockchip_dnl_key_pressed() in SPL
  board: rockchip: Add Recovery Button for Anbernic RGxx3
  rockchip: board: Add board_rng_seed() for all Rockchip devices
  board: rockchip: Add support for new boards to RGxx3
  doc: board: anbernic: Update rgxx3 to add new boards

 .../arm/dts/rk3566-anbernic-rgxx3-u-boot.dtsi |  11 +
 arch/arm/mach-rockchip/Makefile               |   4 +-
 arch/arm/mach-rockchip/board.c                |  32 +++
 arch/arm/mach-rockchip/boot_mode.c            |  11 +-
 board/anbernic/rgxx3_rk3566/rgxx3-rk3566.c    | 194 +++++++++++-------
 common/spl/Kconfig                            |   7 +
 configs/anbernic-rgxx3-rk3566_defconfig       |  16 +-
 doc/board/anbernic/rgxx3.rst                  |  20 +-
 drivers/Makefile                              |   1 +
 drivers/adc/Makefile                          |   2 +-
 include/configs/anbernic-rgxx3-rk3566.h       |   2 +
 11 files changed, 210 insertions(+), 90 deletions(-)

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2.34.1