Am Montag, 17. Oktober 2022, 12:05:16 CEST schrieb John Keeping: > Hi Johan, > > On Mon, Oct 17, 2022 at 10:11:32AM +0200, Johan Jonker wrote: > > Your patch contribution causes a kernel panic on MK808 with Rockchip rk3066a SoC. > > Would you like to contribute to fix this issue? > > The assumtion that drm_fbdev_generic_setup() does what rockchip_drm_fbdev_init did is not true! > > A revert makes it work again. > > It looks like there are 3 different ways to end up with -ENOMEM here, > can you track down whether you're hitting one of the cases in > rockchip_gem_prime_vmap() or if it's the iosys_map_is_null case in > drm_gem_vmap()? > > I guess the memory usage increases slightly using the generic code and > RK3066 has less memory available. also rk3066 and rk3188 do not have an iommu, so rely on cma allocations. Heiko
