[U-Boot] [RFC PATCH 0/3] sunxi: video: Add support for HDMI output on H3
Rask Ingemann Lambertsen
rask at formelder.dk
Sun Feb 5 22:14:52 UTC 2017
On Tue, Dec 13, 2016 at 01:36:27AM +0100, Jernej Skrabec wrote:
> This patch series add support for HDMI output. Support for other,
> newer, SoCs, which also uses DE2 and same or similar HDMI controller
> and PHY can be easily added later (A83T/A64/H5/R40). Current driver
> can also be easily extended with TV out support, just like video
> driver for older Allwinner SoCs.
>
> While driver works, I would like to get few opinions first.
> - From what I understand, drivers which supports DT are preferred.
> Would it be better to rewrite this driver to support device tree?
> - TCON code is currently exactly the same as in driver for older
> SoCs. Should I split it out into shared module? Also TV out code
> seems to be similar, but I didn't manage to confirm that it works
> as-is on H3.
> - A80 SoC is mix of older display engine and newer HDMI controller,
> so it doesn't really work with either of sunxi video drivers. Two
> solutions I see here are either combine both driver into one massive
> display driver or, much better, split everything by components
> (TCON/DE/DE2/HDMI/TV) and instantiate compatible ones. I guess this
> is not much different than adding support for DT in drivers. Note
> that I don't have any A80 board, I'm just thinking ahead.
I have an A80 board with HDMI connector, so I can help with testing.
Is there anywhere a list of which components are the same between
Allwinner's SoCs? If not, I'll also accept pointers to pieces of information
I can use to start a page on the wiki about it. How about the order in
which the SoCs where released?
--
Rask Ingemann Lambertsen
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