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@suse.de
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)
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.
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/tre...