4 Device bindings are described by their own individual binding files.
6 U-Boot provides for some optional properties which are documented here. See
7 also hid-over-i2c.txt which describes HID devices. See also
8 Documentation/firmware-guide/acpi/enumeration.rst in the Linux kernel for
9 the acpi,compatible property.
11 - acpi,has-power-resource : (boolean) true if this device has a power resource.
12 This causes an ACPI PowerResource to be written containing the properties
13 provided by this binding, to describe how to handle powering the device up
15 - acpi,compatible : compatible string to report
16 - acpi,ddn : Contains the string to use as the _DDN (DOS (Disk Operating
18 - acpi,hid : Contains the string to use as the HID (Hardware ID)
20 - acpi,path : Specifies the full ACPI path for a device. This overrides the
21 normal path built from the driver-model hierarchy
22 - acpi,name : Provides the ACPI name for a device, which is a string consisting
23 of four alphanumeric character (upper case)
24 - acpi,uid : _UID value for device
25 - acpi,wake : Provides the GPE used to detect a request from a device to wake
27 - linux,probed : Tells U-Boot to add 'linux,probed' to the ACPI tables so that
28 Linux will only load the driver if the device can be detected (e.g. on I2C
29 bus). Note that this is an out-of-tree Linux feature.
35 elan_touchscreen: elan-touchscreen@10 {
36 compatible = "i2c-chip";
38 acpi,hid = "ELAN0001";
39 acpi,ddn = "ELAN Touchscreen";
40 interrupts-extended = <&acpi_gpe GPIO_21_IRQ IRQ_TYPE_EDGE_FALLING>;
45 reg = <0x0000a000 0 0 0 0>;
48 compatible = "intel,generic-wifi";
49 acpi,ddn = "Intel WiFi";
51 acpi,wake = <GPE0_DW3_00>;
52 interrupts-extended = <&acpi_gpe 0x3c 0>;
58 reg = <0x02006810 0 0 0 0>;
59 compatible = "intel,apl-p2sb";
60 early-regs = <IOMAP_P2SB_BAR 0x100000>;
64 compatible = "intel,apl-pinctrl";
66 intel,p2sb-port-id = <PID_GPIO_N>;
67 acpi,path = "\\_SB.GPO0";
69 compatible = "intel,gpio";
73 linux-name = "INT3452:00";