[U-Boot] [PATCH 4/4] sunxi: video: Force h/vsync active high when using ext. vga dac

[Ian Campbell]

On Sun, 2015-01-25 at 15:35 +0100, Hans de Goede wrote:
> On both my A13-OLinuxIno and my A13-OLinuxIno-Micro, the vga output gives an
> unstable image when active low v or hsync is used, so when an external vga dac
> is used force v and hsync active high independent of what the modeline says.

Does this not just mean the modeline is wrong and should be fixed or an
alternative provided which is correct for these systems?

In the code comment you say "some dacs", what about ones which don't
have this issue or, worse, ones which have the inverse issue and don't
work with active high?

At the least I'd say this aught to be controllable via Kconfig.

Ian.