On Thu, Mar 09, 2017 at 07:31:27PM +0800, Chen-Yu Tsai wrote: > >> Additionally, the mux registers are only valid in the first TCON, meaning > >> it must available be active in 2 pipeline chips. It's also why we'd pass > >> "struct drm_device *" instead of "struct sun4i_tcon *". > > > > Hmmmm. That's going to be tricky to support. Has this been confirmed > > somehow? Is the register used for something else on TCON1? > > At this point, the only reference is Allwinner's kernel, and the old 3.4 > kernel for A10/A20. I could try getting HDMI working on the A31 to get > some real results. > > FWIW, the registers do not seem to be aliased across the two TCONs. Then maybe we don't need to care, and we can just always write to the mux? Maxime -- Maxime Ripard, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com
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