[U-Boot] sunxi: add custom board

[Maxime Ripard]

On Wed, Oct 24, 2018 at 03:59:56PM +0200, Giulio Benetti wrote:
> Hello Jagan and Maxime,
> 
> I've looked around a lot, but I can't find a way to use the board/sunxi:
> http://git.denx.de/?p=u-boot.git;a=tree;f=board/sunxi;h=304ee6b4cc8e075759d3bd0beb250b56f6901702;hb=HEAD
> 
> to fit what we need.
> 
> We have 5 gpios that control the max current setting on
> current-driver for Backlight biasing shunt kathode resistor, and I
> don't know where to place the code to set those pins.
> 
> I would like to avoid to create another new board if possible, since
> board/sunxi has everything we need to make our board operative.
> In general, is there some sort of __weak__ hooks to be used to extend an
> existing board?
> Because I understand that probably you wouldn't add this code I'm talking
> about inside board/sunxi.
> 
> This request is done with idea to upstream patch for this board.
> 
> Can you help me?

If that's backlight related, maybe you can just create a new backlight
driver?

Maxime

-- 
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com