I'm seeing the same on nyan-big and jetson-tk1 with ArchlinuxARM (linux-armv7 4.12 kernel). I sent an email to linux-tegra yesterday about it. Thank's for investigating and let me know if there's anything I can do to aid. My nyan-big chromebook otherwise works very well with the ArchlinuxARM 4.11 kernel. Maybe I'll try to get the u-boot reading the eMMC so I don't have to boot the kernel off of a USB drive... -Anthony On Thu, Jul 6, 2017 at 12:21 PM, Jon Hunter <jonathanh@xxxxxxxxxx> wrote: > Hi Paul > > On 06/07/17 17:15, Paul Kocialkowski wrote: >> * PGP Signed by an unknown key >> >> As I was investigating why my nyan_big's screen was staying dark when testing >> 4.12, it appeared that the tegra drm driver does not get probed at all on my >> setup (read: host1x_drm_probe never gets called). I have also tested on jetson- >> tk1, with the same result. >> >> I am using a finely-tuned out-of-tree config[0], but it appears (from looking at >> the lack of drm line in the logs) that the same is happening with the tegra and >> multi_v7 defconfigs hooked to kernelci. >> >> First, I am wondering whether the tegra drm driver is probing for anyone >> following this list on any tegra124 device with 4.12. If so, feel free to raise >> your voice so we can find out what is wrong with my setup. >> >> I initially thought that it was caused by missing firmwares (that are now needed >> for falcon/vic support), but disabling that (by removing the &tegra_vic_driver >> entry and associated compatible string in drm.c) does not help. >> >> Hopefully, I will have time to run a bisect this week-end and identify the >> commit that introduced the regression. It would be quite important to get this >> fixed for the 4.13 release. > > I have bisected this to ... > > commit 700ea5e0e0dd70420a04e703ff264cc133834cba > Merge: 3dc2046ca78b c1ae3cfa0e89 > Author: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxxx> > Date: Mon Mar 6 06:49:34 2017 -0300 > > Merge tag 'v4.11-rc1' into patchwork > > I am not sure if something went wrong with the above merge, but it > definitely seems to be coming from the media tree [0]. > > Cheers > Jon > > [0] https://git.linuxtv.org/media_tree.git/ > > -- > nvpublic > -- > To unsubscribe from this list: send the line "unsubscribe linux-tegra" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
