gpio-poweroff driver

[XY]

Hi,

I am using mainline kernel 5.6 on a BPI M2 zero and I compiled the kernel with the gpio-poweroff driver. Did somebody already try to use the gpio-poweroff driver ? On my side nothing seems to work.

I tried to implement this on PA17.

Here are my modifications on the device tree :

/dts-v1/;

 /

 { 

     ...

 

 pinctrl@1c20800 { 

    reg = <0x1c20800 0x400>; 

    interrupts = <0x0 0xb 0x4 0x0 0x11 0x4>; 

    clocks = <0x3 0x36 0x10 0x11 0x0>; 

    clock-names = "apb", "hosc", "losc";

    gpio-controller; #gpio-cells = <0x3>;

    interrupt-controller; 

    #interrupt-cells = <0x3>; 

     compatible = "allwinner,sun8i-h3-pinctrl"; 

     phandle = <0xc>;

     ... 

     poweroff_pins@0 {          /* This line has been added */ 

          pins = "PA17"; /* This line has been added */ 

          function = "gpio_out"; /* This line has been added */ 

           }; /* This line has been added */ 

     };

 ...

 

 gpio_power_off { /* This line has been added */ 

       compatible = "gpio-poweroff"; /* This line has been added */ 

       gpios = <0xc 0x0 0x11 0x1>; /* This line has been added */ 

        ; /* This line has been added */

 };

But nothing happens when I shut down the device .

Any thoughts ?

Thanks