Re: [Letux-kernel] OMAP3 framebuffer woes again in letux-4.15-rc8 due to mvduin/patch/tiler-fbdev for OMAP5

On 19/01/18 13:11, Michael Mrozek wrote:

Am Fri, 19 Jan 2018 10:43:12 +0200 hat Tomi Valkeinen tomi.valkeinen@ti.com geschrieben:

Hi,

well, as far as I am aware, no one had encountered a CPU lockup on the shipped out prototypes so far, and we're all using TILER with the zmatt patch for transparent rotaton.

I've got no idea why - but it seems to work fine here :)

It's not easy to hit, but it's there. Possibly it doesn't matter for some (many?) users. So I'm fine with supporting CPU access to TILER addresses in the mainline kernel, but at the same time, it's not something I will be working on. And possibly at some point I'll add a kernel kconfig option, so that one needs to explicitly enable (and thus acknowledge) the CPU accesses to TILER.

Tomi