Set gpio level at boot

Hello.

I need to set a low level on a gpio pin PA6 on boot. I'm trying to do this through the device tree:

/dts-v1/;
/plugin/;
/ {
    compatible = "allwinner,sun8i-h3";
   fragment@0 {
    target = <&pio>;
    __overlay__ {
	pinctrl-0 = <&pull_pins>;
      
        pull_pins:pull_pins {
        	pins = "PA6";
        	function = "gpio_out";
		bias-disable;
		output-low;
        };
    };
    };
};

I need to set PA6 to low. 

After boot, I see my overlay in device tree, but the level on the PA6 is still high. I can easily control the level through libgpiod (gpioset gpiochip0 6=1 or gpioset gpiochip0 6=0), it works. But I can't set low level at start.
Full device tree - https://pastebin.com/dQKSYXjL

What am I doing wrong?