SSD_POWER CONSUMPTION ADJUSTMENT REFERENCE

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1. Disable the analog circuit

Disable the following options in kernel config(If you need to light up the panel, DISP_LPLL/UPLL_0/UPLL_1 cannot be turned off, if you need to light up MIPI panel, MIPI_DPHY_TX cannot be turned off.)

2. Disable the corresponding digital circuit

• The function modules corresponding to Audio & HDMI & IDAC(VGA) & DISP are configured in the SDK, just disable 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 config

  

• SS_SATA_HOST:

  

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

  

3. CPU single core running 400MHz

• CPU running at 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.

		Default config (enable network & usb)	Disable network	Disable network & usb	Disable network & usb& sata	Disable network & usb & sata & audio	Disable network & usb & sata & audio & mipi	Disable network & usb & sata & audio & mipi & UPLL	Disable network & usb & sata & audio & mipi & UPLL & cpu 400MHz	Disable network & usb & sata & audio & mipi & UPLL & cpu 400MHz & nosmp single core
3.3V	IO	75.8	73	56.6	56.6	56.7	56.7	53.4	57.4	57.6
1.8V	AVDDIO_DRAM	32.1	32	32.02	32.02	32.01	31.98	32.01	31.96	32.01
	AVDDIO_DATA	49.5	50	49.4	49.5	49.4	49.4	49.4	49.4	49.5
0.9V	DVDD_DDR	7.54	7.5	7.52	7.52	7.53	7.53	7.52	7.52	7.53
	COREPOWER	127	124	120	120	120	119	85	77	77
	Total (Unit: mA)	292	286	265.54	265.64	265.64	264.61	227.33	223.28	223.64

View CPU temperature:

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

View CPU frequency:

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