POWER CONSUMPTION　ADJUSTMENT REFERENCE

The power consumption of Takoyaki can be adjusted by the following points:

• Close the analog circuit(Note: if the status is *, it is closed)

  Turn off the following options in kernel config(If you need to light up the panel, DISP_LPLL cannot be turned off, if you need to light up MIPI panel, MIPI_DPHY_TX can’t be turned off.)

  

• Turn off the config of the functional module corresponding to the analog circuit (turn off the corresponding digital circuit)

  • The function modules corresponding to Audio & HDMI & IDAC(VGA) & DISP are configured in the SDK, just turn off the SDK module:

    project\release\customer_tailor\nvr_i2m_display_glibc_tailor.mk

    • audio

      interface_ai:=disable
      interface_ao:=disable
      mhal_aio:=disable
      

    • hdmi

      interface_hdmi:=disable
      mhal_hdmitx:=disable
      

    • disp

      interface_disp:=disable
      mhal_disp:=disable
      

    • mipi tx

      interface_panel:=disable
      mhal_panel:=disable
      

  • The config of the EMAC network switch is in the kernel config interface

    

    

    

  • The config of the Sata switch is in the kernel configu interface

    

  • SS_SATA_HOST:

    

  • The config of the USB switch is in the kernel config interface

    

• CPU single core running 400MHz

  • CPU running in 400MHz

    kernel\arch\arm\boot\dts\infinity2m.dtsi

  

  • CPU single core running

    Add nosmp at the end of bootargs:

    bootargs=console=ttyS0,115200 root=/dev/mtdblock4 rootfstype=squashfs ro init=/linuxrc LX_MEM=0x3f00000 mma_heap=mma_heap_name0,miu=0,sz=0x1000000 mma_memblock_remove=1 highres=off mmap_reserved=fb,miu=0,sz=0x300000,max_start_off=0x3300000,max_end_off=0x3600000 nosmp
    

The test data of the public version is as follows:

Test software version: TAKOYAKI_DLS00V009.

Test environment: Takoyaki NOR EVB board connected to TTL panel with 12V power supply.

View CPU temperature:

cat /sys/devices/virtual/mstar/msys/TEMP_R

View CPU frequency:

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