Just tested lpae config without CONFIG_EXYNOS_IOMMU on snow, system boots with black screen same, then modprobe cros_ec_devs, ptn3460, pwm-samsung makes panel start to work without kernel panic.
--- Best Regards, Misha Komarovskiy zombahatgmaildotcom On Mon, Aug 17, 2015 at 12:01 PM, Misha Komarovskiy <zom...@gmail.com> wrote: > Hello Guillaume, > I tested both exynos_defconfig and multi_v7_defconfig, they work fine. > But ill test lpae config without EXYNOS_IOMMU today and will report. > --- > Best Regards, > Misha Komarovskiy > zombahatgmaildotcom > > > On Mon, Aug 17, 2015 at 9:59 AM, Guillaume Gardet > <guillaume.gar...@free.fr> wrote: >> Hi, >> >> Le 16/08/2015 21:59, Misha Komarovskiy a écrit : >>> >>> Hello, >>> Maybe we can disable only Exynos IOMMU in configs for now? Same way it >>> is disabled in current exynos_defconfig here >>> >>> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/arch/arm/configs/exynos_defconfig?id=6562f3bd396ab6d2c9b455e95c67e33bab73bff5 >>> As i understand it is broken for all exynos devices not only snow. >> >> >> That is exactly what I would like to do since I read this thread: >> https://lkml.org/lkml/2015/2/17/163 >> >> Before submitting the idea here, I wanted to check if disabling Exynos IOMMU >> in config was enough. >> I had only time to test the exynos_defconfig with openSUSE kernel and it was >> OK (boot messages and login prompt displayed). >> >> >> Guillaume >> >> >>> --- >>> Best Regards, >>> Misha Komarovskiy >>> zombahatgmaildotcom >>> >>> >>> On Thu, Jul 23, 2015 at 4:29 PM, Alexander Graf <ag...@suse.de> wrote: >>>> >>>> >>>>> Am 23.07.2015 um 15:15 schrieb Andreas Färber <afaer...@suse.de>: >>>>> >>>>>> Am 23.07.2015 um 15:12 schrieb Alexander Graf: >>>>>>> >>>>>>> On 07/23/15 14:43, Andreas Färber wrote: >>>>>>>> >>>>>>>> Am 23.07.2015 um 14:22 schrieb Guillaume Gardet: >>>>>>>> Maybe some config options compiled as module (which?) and blacklisted >>>>>>>> for chromebooks could be ok? >>>>>>> >>>>>>> Maybe. Someone with a Chromebook needs to sit down and try. :) >>>>>> >>>>>> Hrm, rather than disable it one way or another manually, couldn't we >>>>>> just blacklist it inside the kernel? I doubt that we can load iommu as >>>>>> module... >>>>> >>>>> You mean as in patch the iommu probe code to check for "google,snow", >>>>> "google,spring", etc.? >>>> >>>> For example - or remove the respective dt node. Or as a property to the >>>> IOMMU dt node... >>>> >>>> Alex >>>> >>>>> Andreas >>>>> >>>>> -- >>>>> SUSE Linux GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany >>>>> GF: Felix Imendörffer, Jane Smithard, Dilip Upmanyu, Graham Norton; HRB >>>>> 21284 (AG Nürnberg) >>>> >>>> -- >>>> To unsubscribe, e-mail: opensuse-arm+unsubscr...@opensuse.org >>>> To contact the owner, e-mail: opensuse-arm+ow...@opensuse.org >>>> >> -- To unsubscribe, e-mail: opensuse-arm+unsubscr...@opensuse.org To contact the owner, e-mail: opensuse-arm+ow...@opensuse.org
