On Tue, May 14, 2019 at 10:43:35PM +0200, Jernej Skrabec wrote: > I received a report that 4K resolution doesn't work if U-Boot video > driver is disabled. It turns out that HDMI PHY clock driver was > initialized prematurely, before reset line was deasserted and clocks > enabled. U-Boot video driver masked the issue because it set pixel > clock correctly. > > In the process of researching the bug, I also found out that few bits > in HDMI PHY registers were not set correctly. While there is no > noticeable change (4K resolution works with both settings), I've > added fix anyway, to be conformant with vendor documentation. Applied both, thanks Maxime -- Maxime Ripard, Bootlin Embedded Linux and Kernel engineering https://bootlin.com
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