iMX6Q 1.2GHz related Linux and Uboot BSP changes

[NithinkumarN]

Hi,

I'm working on i.MX6Q processor.

Current i have Linux 3.0.35 and Uboot BSPs for 1GHz support.

I'm going to change this to 1.2GHz i.MX6Q processor in my platform.

Can any one please let me know what are the changes need to be done in Linux and Uboot BSPs for 1.2GHz.

Thanks and Regards,

Nithin

[joanxie]

To view what values the CPU frequency can be changed to in KHz (The values in the

first column are the frequency values), use this command:

cat /sys/devices/system/cpu/cpu0/cpufreq/stats/time_in_state

To change the CPU frequency to a value that is given by using the command above (for

example, to 792 MHz), use this command:

echo 792000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed

The frequency 792000 is in KHz, which is 792 MHz.

The maximum frequency can be checked by using this command:

cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq

Use the following command to view the current CPU frequency in KHz:

cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq