On 07/23/2015 02:46 PM, Andreas Färber wrote:
Salut Alexandre,
Am 09.07.2015 um 09:32 schrieb Alexandre Courbot:
Tegra124 requires the bootloader to perform VPR initialization, otherwise the
GPU cannot be used by the system. Since using the GPU without that
initialization results in a hang, the GPU DT node is left disabled, and it is
the task of the bootloader to enable it after ensuring it is safe to use the
GPU.
VPR init is already performed since patch df3443dfa449, but the device tree was
left untouched. This patch series performs this last step and prepares the GPU
intialization code to receive more code for newer chips.
Tested-by: Andreas Färber <afaerber@xxxxxxx>
I've tested this patchset on v2015.07 with 4.2.0-rc3-00115-gc5dfd65 -
with these two patches I get a console login on HDMI again.
However, I'm still having trouble with X11... Should that be working
with linux.git? (haven't tried linux-next.git yet)
X11 with nouveau shouldn't be working (unless there has been significant
work I'm not aware of since the last time I tested). However, it should
work with the modesetting driver, just without acceleration. To test if
nouveau works, you'll want to use something
that allows buffer sharing between tegradrm and nouveau like
http://github.com/gnurou/kmscube.
Among other errors, it seems that nouveau is looking for firmware
nouveau/nvea_fuc409c and nouveau/fuc409c - who should be providing that?
It's not in linux-firmware.git [1], and I see no /dev/mmcblk0p* to check
whether the original system has such a file (which I doubt, given the
nouveau naming). It then falls back to the tegra drm iiuc.
Based on a quick google search, looks like you'll have to pick these
files up from this commit:
http://git.baserock.org/cgi-bin/cgit.cgi/delta/linux.git/commit/?h=baserock/james/linux-tegra-3.15&id=2deb0fa
a strange state of things, indeed.. :)
I guess you could also extract them from the files in linux-firmware.
Mikko
With -rc2 I've seen the system freeze, with -rc3 just not behaving as
expected when starting X (with ssh/serial remaining usable).
[ 2.841626] [drm] Initialized drm 1.1.0 20060810
[ 2.846621] 57000000.gpu supply vdd not found, using dummy regulator
[ 2.853089] nouveau 57000000.gpu: cannot initialize IOMMU MM
[ 2.860518] [drm] not a PCI device; no HDMI
[ 2.864814] nouveau [ DEVICE][57000000.gpu] BOOT0 : 0x0ea000a1
[ 2.870932] nouveau [ DEVICE][57000000.gpu] Chipset: GK20A (NVEA)
[ 2.877211] nouveau [ DEVICE][57000000.gpu] Family : NVE0
[ 2.916829] nouveau [ INSTMEM][57000000.gpu] using DMA API
[ 2.923392] nouveau [ VOLT][57000000.gpu] The default voltage is
-22uV
[ 2.930297] nouveau [ CLK][57000000.gpu] parent clock rate: 12 Mhz
[ 2.938662] nouveau [ CLK][57000000.gpu] --: core 198 MHz
[ 3.037837] nouveau [ PGRAPH][57000000.gpu] using external firmware
[ 3.044493] nouveau 57000000.gpu: Direct firmware load for
nouveau/nvea_fuc409c failed with error -2
[ 3.053843] nouveau 57000000.gpu: Direct firmware load for
nouveau/fuc409c failed with error -2
[ 3.062549] nouveau E[ PGRAPH][57000000.gpu] failed to load fuc409c
[ 3.069497] [TTM] Zone kernel: Available graphics memory: 373624 kiB
[ 3.075927] [TTM] Zone highmem: Available graphics memory: 1032568 kiB
[ 3.082480] [TTM] Initializing pool allocator
[ 3.086923] [TTM] Initializing DMA pool allocator
[ 3.091737] nouveau [ DRM] VRAM: 0 MiB
[ 3.095914] nouveau [ DRM] GART: 1048576 MiB
[ 3.191777] nouveau E[ PFIFO][57000000.gpu] unsupported engines
0x00000030
[ 3.269831] nouveau E[ DRM] failed to create ce channel, -22
[ 3.365874] nouveau E[ PFIFO][57000000.gpu] unsupported engines
0x00000001
[ 3.443902] nouveau E[ DRM] failed to create kernel channel, -22
[ 3.452322] tegra-hdmi 54280000.hdmi: failed to get HDMI regulator
[...]
[ 6.817669] +5V_HDMI_CON: supplied by +5V_SYS
[ 6.822215] +1.05V_RUN_AVDD_HDMI_PLL: supplied by +1.05V_RUN
[ 6.828102] +3.3V_RUN: supplied by +3.3V_SYS
[ 6.832438] +3.3V_AVDD_HDMI_AP_GATED: supplied by +3.3V_RUN
[ 6.841657] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[ 6.848317] [drm] No driver support for vblank timestamp query.
[ 6.926989] Console: switching to colour frame buffer device 160x64
[ 6.945437] drm drm: fb0: frame buffer device
[ 6.949894] drm drm: registered panic notifier
[ 6.976420] [drm] Initialized tegra 0.0.0 20120330 on minor 1
Regards,
Andreas
[1]
https://git.kernel.org/cgit/linux/kernel/git/firmware/linux-firmware.git/tree
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