I have PPT chipset and I want to implement GPIO events from GPIO8.

my configuration in devicetree.cb:
gpi8_routing = 0x02
gpe0_en = 0x00100006

configuration in gpio.h:
.gpio8 = GPIO_MODE_GPIO
...
.gpio8 = GPIO_DIR_INPUT
...
.gpio8 = GPIO_LEVEL_HIGH
...
.gpio8 = GPIO_INVERT

my example in gpe.asl:
Scope(_GPE)
{
Name (_HID, "ACPI0006")

Method(_L08, 0, NotSerialized)
    {
    Store(0x00, Local0)
    Store(\_SB.PCI0.SBUS.SRDW(0x14, 0x01), Local0)
    Notify(\_SB.PCI0.BAT0, 0x81)
    }

I see that nothing happens on SMBUS, so event from gpio8 not working.
What else I need to do to get working events on GPIO?

Chris