gpio_expander.dsl

DefinitionBlock ("gpio-expander.aml", "SSDT", 1, "Vendor", "Accel", 0x00000004)
{
        External (\_SB.PC00.I2C0, DeviceObj)
        Scope (\_SB.PC00.I2C0)
        {
                Device (PCF0)
                {
                        Name (_CID, "PRP0001")
                        Name (_DDN, "GPIO-Expander")
                        Name (_ADR, 0x0020)
                        Name (_DSD, Package ()
                        {
                                ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
                                Package ()
                                {
                                        Package () { "compatible", Package() { "nxp,pcf8575" } },
                                }
                        })
                        Method (_STA, 0, NotSerialized)  // _STA: Status
                        {
                                Return (0x0F)
                        }
                        Name (_CRS, ResourceTemplate()
                        {
                                I2cSerialBusV2 (
                                        0x20,
                                        ControllerInitiated,
                                        100000,
                                        AddressingMode7Bit,
                                        "\\_SB.PC00.I2C0",
                                        0x00
                                )
                        })
                }
        }
}