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ti8148 processor frequency related

yashavadan Dalsaniya
Intellectual 550 points

Hi 

I am using evalution board of ti8148 and by default processor is running on 600Mhz frequency, but i want to change the processor frequency to 1Ghz. I have changed pll value to change processor frequency and i found out board is working properly up to 900Mhz. If i change frequency to 1Ghz then sometime board get hang.

I have checked the part number of processor and it is X8148X3874BCYE. I can not able to find out the maximum supported frequency from datasheet. Is it the reason that processor par is not supporting 1Ghz or we can not run processor to its maximum frequency?

Thanks in advance. 

  • 0
    TI__Genius 15310 points

    Yashavadan,

    The 1GHz part is in CYE1 and CYE2.  Yours is probably not supported.  Can you contact our FAE/sale for this part?

    BR,

    Viet

  • 0
    Expert 1015 points

    Hello yashavadan Dalsaniya:

              How do you get  the 900Mhz on DM8148?I do accroding to:

    echo "Config Cortex A8 720MHZ..."
    #cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq
    echo -n "userspace" > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
    echo -n 720000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed

    and I see:

    root@dm814x-evm:~# cat  /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_f
    requencies
    600000 720000 1000000

    So I cant  set 900Mhz,How do you get it ?

             Thansk.