[PATCH] sunxi: display: introduce "sunxi-video" environment variable

[Maxime Ripard]

Hi,

On Mon, Jan 11, 2021 at 10:13:32AM +0100, Giulio Benetti wrote:
> From: Giulio Benetti <giulio.benetti at micronovasrl.com>
> 
> At the moment you can specify lcd_mode only through hardcoded
> CONFIG_VIDEO_LCD_MODE but this way, if you have a board with multiple lcds
> compatible, you have to rebuild u-boot for every single lcd, so let's add
> sunxi-video environment variable to give the possibility to specify lcd
> settings at runtime. It's mandatory to "saveenv" after setting sunxi-video
> variable and then "reset" since sunxi_display driver apply those settings
> only on startup.
> 
> Signed-off-by: Giulio Benetti <giulio.benetti at micronovasrl.com>

What's different from the video= parameter that already exists (and
should work like you suggest)?

Maxime
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