disable power consumption imx6ull

[vladimirchernin]

Hello!

We have built the board based on imx6ull and we need to optimize our power consumption.

We can I do it?

 Do i need to close the clocks by editing linux's clk-imx6ul.c file.

How c an I do it in device tree?

I need to disable usb phy ,pxp, audio clocks. 

Thanks in advance

Vladimir

[vladimirchernin]

Hi Igor!

Thanks for help.

I have trying  to disable via device tree  status = "disabled";  pxp , usbotg1 usbotg2 etc. i dont see any difference in power consumption 

Basically i need RMII1 RMII2 i2c ,spi uart only

i must to disable evething what is possible to shut down USB, analog to digital,LCD, graphics components etc.

How can i do clock gating configuration for IMX6ull to reduce consumption i need to shut down clocks.

Regards

Vladimir 

[igorpadykov]

Hi Vladimir

one can check AN5345 6ULL Power Consumption Application Note

https://www.nxp.com/docs/en/application-note/AN5345.pdf 

dts file linux/arch/arm/boot/dts/imx6ull-14x14-evk.dts

imx6ull-14x14-evk.dts\dts\boot\arm\arch - linux-imx - i.MX Linux kernel 

module can be enabled with status = "okay";

Best regards
igor
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