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,uid : _UID value for device
21 - linux,probed : Tells U-Boot to add 'linux,probed' to the ACPI tables so that
22 Linux will only load the driver if the device can be detected (e.g. on I2C
23 bus). Note that this is an out-of-tree Linux feature.
29 elan_touchscreen: elan-touchscreen@10 {
30 compatible = "i2c-chip";
32 acpi,hid = "ELAN0001";
33 acpi,ddn = "ELAN Touchscreen";
34 interrupts-extended = <&acpi_gpe GPIO_21_IRQ IRQ_TYPE_EDGE_FALLING>;