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+--- Thread: OpenCL through ARM's Official Mali Kernel Driver (/showthread.php?tid=18699)
OpenCL through ARM's Official Mali Kernel Driver - pvelesko - 09-13-2023
Hi all,
I am trying to install the official ARM Mali GPU driver from here: https://developer.arm.com/downloads/-/mali-drivers/bifrost-kernel
The intention is to run an OpenCL benchmark on Mali-G52.
I disabled the panfrost driver, build the ARM driver, however, I run into the following error. I've seen references to `dev_pm_opp_set_regulators: no regulator (shadercores) found: -19` elsewhere but no idea how to actually fix it. Anyone have any ideas?
```
~$ dmesg | grep -i mali
[ 3.768892] mali fde60000.gpu: Kernel DDK version r44p0-01eac0
[ 3.768919] mali fde60000.gpu: IRQ JOB not found
[ 3.769415] mali fde60000.gpu: IRQ MMU not found
[ 3.769897] mali fde60000.gpu: IRQ GPU not found
[ 3.770430] mali fde60000.gpu: Looking up mali-supply from device tree
[ 3.774382] mali fde60000.gpu: Looking up shadercores-supply from device tree
[ 3.774406] mali fde60000.gpu: Looking up shadercores-supply property in node /gpu@fde60000 failed
[ 3.774538] mali fde60000.gpu: Looking up mali-supply from device tree
[ 3.775188] mali fde60000.gpu: Looking up shadercores-supply from device tree
[ 3.775217] mali fde60000.gpu: Looking up shadercores-supply property in node /gpu@fde60000 failed
[ 3.775264] mali fde60000.gpu: dev_pm_opp_set_regulators: no regulator (shadercores) found: -19
[ 3.776281] mali fde60000.gpu: Power management initialization failed error = -19
[ 3.776981] mali fde60000.gpu: Device initialization failed
```
RE: OpenCL through ARM's Official Mali Kernel Driver - CounterPillow - 09-14-2023
That sounds like you need to modify the device tree and add a shadercores-supply property.