AM335x mpurate + bogomips

[Mark Jackson <mpfj-list@mimc.co.uk>]

Before I dig any deeper, can anyone tell me if the bootarg "mpurate" is meant to
be supported for AM335x SoCs ?

I've tried it on our custom board using 3v8, but no joy.

The boot log shows:-

[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Linux version 3.8.0-03059-g621553c-dirty (mpfj@mpfj-nanobone) (gcc version 4.5.4 (Buildroot 2012.11) ) #113 SMP Thu Feb 21 16:29:48 GMT 2013
[    0.000000] CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c53c7d
[    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[    0.000000] Machine: Generic AM33XX (Flattened Device Tree), model: Newflow NanoBone
[    0.000000] Memory policy: ECC disabled, Data cache writeback
[    0.000000] CPU: All CPU(s) started in SVC mode.
[    0.000000] AM335X ES1.0 (neon )
...
[    0.000000] Kernel command line: console=ttyO0,115200n8 mpurate=720 root=/dev/mmcblk0p2 ro rootfstype=ext2 rootwait
...
[    0.001119] Calibrating delay loop... 364.48 BogoMIPS (lpj=1425408)

I have seen other boot logs outputs [1] from other people where they are getting nearly double that.

Looking at omap2xxx_clk_arch_init(), only ompa24xx devices are supported.

Am I missing something obvious (like it's not yet supported !!) ?

Cheers
Mark J.

[1] http://e2e.ti.com/support/embedded/linux/f/354/t/245316.aspx