[PATCH 17/24] drm/bridge/sii8620: split EDID read and write code

[Andrzej Hajda]

On 24.01.2017 11:31, Archit Taneja wrote:
>
> On 01/20/2017 01:08 PM, Andrzej Hajda wrote:
>> MHL3 requires that after reading EDID from the sink source should ask
>> peer for features. To make both protocols happy the patch splits the code
>> accordingly.
> I was wondering about the EDID code in the driver, what does it exactly
> do with the EDID? We don't seem to be populating connector modes with it.
> I saw a func called sii8620_set_upstream_edid(), but didn't understand
> what it does.

MHL reads EDID from TV (or MHL dongle) using MHL protocol and publish it
upstream (for example to exynos_hdmi on tm2 devices) via i2c bus.
With some modifications SiI8620 could act as connector and do mode
population itself, it would require modification of exynos_hdmi, and the
main drawback is that modes unsupported by exynos_hdmi would not be
filtered out (as mode filtering is done in connector).

Regards
Andrzej