Hi, Am Samstag, 31. Januar 2015, 17:32:53 schrieb Heiko Stuebner: > This series adds support for the lvds encoder present on rk3288 soc and > allows external connectors to use the generic rgb pins. > > On the older socs (rk3188, rk3066, etc) these pins where accessible by > anyone, while on the rk3288 the lvds controller controls access to them. > > So while on the old socs an external encoder was explicitly connected > to one of the two lcd-controllers, on the rk3288 the lvds in between > can toggle which controller should be the source. > > To facilitate this the lvds encoder can use two modes. When a panel is > attached it acts as encoder and without panel it just registers a bridge > that can be used later. > > The bridge association to an encoder is done via a rockchip,rgb-bridge > property in the encoder node itself and handled in rockchip_drm_load > to not leak rockchip-specific handling into generic encoder drivers. > > > As example on how this can work, I've included a driver for simple > (dumb) vga encoders, like the adv7123 (and clones) as used on the > rk3288-firefly board. This same encoder is used on the Rayeager-px2 > board but there connected directly to the rgb pins of the rk3066 > which will hopefully also be supported in the future. > > I've named this currently vga-simply (inspired by panel-simple), because > so far I have found the adv7123 (and two clones) but I guess there will > be more dumb vga encoders around that only differ in minimal things. > > > Similarly, most of the rk3288-based TV-boxes use a rk1000 i2c tv encoder > connected in a similar way - and again directly connected on the > rk3188-radxarock. > > > Caveats: > - the i2c subdirectory is probably not the right one for my vga encoder > so if somebody could suggest where this should live, I'd be very happy > - I'm not sure if I'm abusing some drm-APIs in a wrong way :-) any comments or suggestions? Especially on the core drm integration? Am I abusing stuff or does this look somewhat sane? Thanks Heiko -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
