On 09/17/16 01:17, Nishanth Menon wrote: > On 09/16/2016 06:50 AM, Jyri Sarha wrote: > [..] >> + blue-and-red-wiring = "crossed"; > > Dumb question: Why is this a Linux generic property - does it make sense > to have "blue-and-red-wiring" as a Linux generic property? I mean, it > reminds me little of those movies "cut the blue or red wire to diffuse > the bomb" ;) It is a property of "ti,tilcdc" node. I did not think I should add a ti specific prefix for it. And after all if some other SoC or display chip has the same bug (eg. blue and red colour components swapped between two different colour modes), they could use the same property. Of course in theory, if such bugs were common, a generic property that would describe how connections between different display data wires are drawn could make sense, but AFAIK am335x is the only one out there with such a bug [1]. > > "The am335x-evm has blue and red wires crossed to get 24-bit RGB (and > 16-bit BGR". I mean, there has to be some sort of better description > specific to lcdc if some product used yellow and green wires for the > same signals crossed? > The property and why it is there is described in detail in the binding document referred to in the commit description. The functional patches, with the binding document can be found here: http://www.spinics.net/lists/devicetree/msg141246.html [1] For more details see section 3.1.1 in AM335x Silicon Errata: http://www.ti.com/general/docs/lit/getliterature.tsp?baseLiteratureNumber=sprz360 Best regards, Jyri -- 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
