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Pull DeviceTree updates from Rob Herring:
"A fairly large (by DT standards) pull request this time with the
majority being some overdue moving DT binding docs around to
consolidate similar bindings.
- DT binding doc consolidation moving similar bindings to common
locations. The majority of these are display related which were
scattered in video/, fb/, drm/, gpu/, and panel/ directories.
- Add new config option, CONFIG_OF_ALL_DTBS, to enable building all
dtbs in the tree for most arches with dts files (except powerpc for
now).
- OF_IRQ=n fixes for user enabled CONFIG_OF.
- of_node_put ref counting fixes from Julia Lawall.
- Common DT binding for wakeup-source and deprecation of all similar
bindings.
- DT binding for PXA LCD controller.
- Allow ignoring failed PCI resource translations in order to ignore
64-bit addresses on non-LPAE 32-bit kernels.
- Support setting the NUMA node from DT instead of only from parent
device.
- Couple of earlycon DT parsing fixes for address and options"
* tag 'devicetree-for-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (45 commits)
MAINTAINERS: update DT binding doc locations
devicetree: add Sigma Designs vendor prefix
of: simplify arch_find_n_match_cpu_physical_id() function
Documentation: arm: Fixed typo in socfpga fpga mgr example
Documentation: devicetree: fix reference to legacy wakeup properties
Documentation: devicetree: standardize/consolidate on "wakeup-source" property
drivers: of: removing assignment of 0 to static variable
xtensa: enable building of all dtbs
mips: enable building of all dtbs
metag: enable building of all dtbs
metag: use common make variables for dtb builds
h8300: enable building of all dtbs
arm64: enable building of all dtbs
arm: enable building of all dtbs
arc: enable building of all dtbs
arc: use common make variables for dtb builds
of: add config option to enable building of all dtbs
of/fdt: fix error checking for earlycon address
of/overlay: add missing of_node_put
of/platform: add missing of_node_put
...
47 lines
1.5 KiB
Plaintext
47 lines
1.5 KiB
Plaintext
Device-Tree bindings for input/gpio_keys_polled.c keyboard driver
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Required properties:
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- compatible = "gpio-keys-polled";
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- poll-interval: Poll interval time in milliseconds
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Optional properties:
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- autorepeat: Boolean, Enable auto repeat feature of Linux input
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subsystem.
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Each button (key) is represented as a sub-node of "gpio-keys-polled":
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Subnode properties:
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- gpios: OF device-tree gpio specification.
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- label: Descriptive name of the key.
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- linux,code: Key / Axis code to emit.
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Optional subnode-properties:
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- linux,input-type: Specify event type this button/key generates.
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If not specified defaults to <1> == EV_KEY.
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- linux,input-value: If linux,input-type is EV_ABS or EV_REL then this
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value is sent for events this button generates when pressed.
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EV_ABS/EV_REL axis will generate an event with a value of 0 when
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all buttons with linux,input-type == type and linux,code == axis
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are released. This value is interpreted as a signed 32 bit value,
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e.g. to make a button generate a value of -1 use:
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linux,input-value = <0xffffffff>; /* -1 */
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- debounce-interval: Debouncing interval time in milliseconds.
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If not specified defaults to 5.
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- wakeup-source: Boolean, button can wake-up the system.
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(Legacy property supported: "gpio-key,wakeup")
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Example nodes:
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gpio_keys_polled {
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compatible = "gpio-keys-polled";
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#address-cells = <1>;
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#size-cells = <0>;
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poll-interval = <100>;
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autorepeat;
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button@21 {
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label = "GPIO Key UP";
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linux,code = <103>;
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gpios = <&gpio1 0 1>;
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};
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...
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