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VAR-SOM-OM35/7 Linux Setting MPU Rate

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VAR-SOM-OM35/7 Setting MPU Rate


Setting the MPU Rate from bootargs

The Linux kernel provides support for boot time allocation of mpurate. This needs to be specified in the bootargs. This is done by adding the following text to the bootargs.

mpurate=600

User can specify appropriate mpurate.

example, NFS bootargs, set MPU rate to 1Ghz:

 setenv bootargs_nfs    'mem=80M@0x80000000 mem=128M@0x88000000 console=ttyS2,115200n8 noinitrd rw root=/dev/nfs nfsroot=/mnt/nfs,nolock ethaddr=$(ethaddr) ip=dhcp consoleblank=0 mpurate=1000' 

By default the mpurate for VAR-SOM-OM35 is 500Mhz.

By default the mpurate for VAR-SOM-OM37 is 800Mhz.