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Device Drivers ->
Multimedia support ->
Media drivers ->
ML Inference Processor VIP9000_NPU |
Refer to the snapshot of the NPU Version choice menu below:
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The NPU driver supports power management, allowing it to power . When loading the NPU driver with the ‘powerManagement=0’ parameter, the NPU power is turned on when the driver probes is probed and power turned off when the driver is removed. To enable this function, insert further save power, load the NPU driver with the ‘powerManagement=1’ parameter. Use This ensures that the NPU power is only turned on when the NPU is actively running.
1.3. Loading the NPU driver
To load the NPU driver (module), use the ‘modprobe’ command as shown below:
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modprobe galcore powerManagement=1 |
or:
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modprobe galcore powerManagement=0 |
Here, 'galcore' is the module name of the NPU driver. The Linux kernel message when When the NPU driver is probing will look like thisbeing probed, the Linux kernel message will appear as follows:
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[ 29.498289] galcore f8140000.galcore: NPU get power success [ 29.498971] galcore f8140000.galcore: galcore irq number is 44 [ 29.499073] galcore f8140000.galcore: NPU clock: 900000000 [ 29.503967] Galcore version 6.4.15.9.700103 [ 29.509197] galcore f8140000.galcore: _SetPower 0 0 enable [ 29.518719] galcore f8140000.galcore: regulator enable success [ 29.519415] galcore f8140000.galcore: NPU ISO disable [ 29.524477] galcore f8140000.galcore: NPU HW reset SMS [ 29.529566] galcore f8140000.galcore: NPU HW reset deassert [ 29.535127] galcore f8140000.galcore: NPU HW clock enable [ 29.540803] galcore f8140000.galcore: _SetPower enable ret=0 [ 29.546162] galcore f8140000.galcore: NPU clock enable success [ 29.559172] galcore f8140000.galcore: NPU clock disable success [ 29.559227] galcore f8140000.galcore: _SetPower 0 0 disable [ 29.563427] galcore f8140000.galcore: NPU HW clock disabled [ 29.568980] galcore f8140000.galcore: NPU HW reset assert [ 29.574355] galcore f8140000.galcore: NPU ISO enable [ 29.579308] galcore f8140000.galcore: regulator disable success [ 29.585206] galcore f8140000.galcore: _SetPower disable ret=0 |
Otherwise, use the ‘modprobe’ command as shown below:
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modprobe galcore |
Upon successful NPU driver probing, the NPU device ('galcore') will appear in the Linux device directory '/dev'.
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~ # ls -l /dev/galcore crw-rw---- 1 root root 199, 0 Jan 1 00:00 /dev/galcore |
2. NN Shared Libraries
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wells@wells-linux:~/Q654$ ll linux/rootfs/initramfs/prebuilt/vip9000sdk
total 20
drwxrwxr-x 7 wells wells 4096 Jun 12 21:31 ./
drwxrwxr-x 9 wells wells 4096 Jun 12 21:31 ../
drwxrwxr-x 4 wells wells 4096 Jun 12 21:31 6.4.13.8/
drwxrwxr-x 4 wells wells 4096 Jun 12 21:31 6.4.15.9/
drwxrwxr-x 4 wells wells 4096 Jun 12 21:31 6.4.18.5/
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The
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‘include’
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subdirectory
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includes
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the
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relevant
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header
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files:
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wells@wells-linux:~/Q654$ ll linux/rootfs/initramfs/prebuilt/vip9000sdk/6.4.15.9/include/ total 28 drwxrwxr-x 7 wells wells 4096 Jun 12 21:31 ./ drwxrwxr-x 4 wells wells 4096 Jun 12 21:31 ../ drwxrwxr-x 2 wells wells 4096 Jun 12 21:31 CL/ drwxrwxr-x 3 wells wells 4096 Jun 12 21:31 HAL/ drwxrwxr-x 2 wells wells 4096 Jun 12 21:31 jpeg/ drwxrwxr-x 12 wells wells 4096 Jun 12 21:31 ovxlib/ drwxrwxr-x 2 wells wells 4096 Jun 12 21:31 VX/ |
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INCLUDES+=-I$(VIVANTENN_SDK_DIR)/include/HAL \ -I$(VIVANTENN_SDK_DIR)/include/CL \ -I$(VIVANTENN_SDK_DIR)/include/VX \ -I$(VIVANTENN_SDK_DIR)/include/ovxlib \ -I$(VIVANTENN_SDK_DIR)/include/jpeg LIBS+=-lOpenVX -lOpenVXU -lCLC -lVSC -lGAL -ljpeg -lovxlib |
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export LD_LIBRARY_PATH=/lib64:/lib:$LD_LIBRARY_PATH |