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author | Sascha Hauer <s.hauer@pengutronix.de> | 2020-11-09 12:38:26 +0100 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2020-11-09 13:42:10 +0100 |
commit | 119c632f12509eab4bc58daf629c4b16fffcedca (patch) | |
tree | 34366b3095d957178b46be47f628a3926ad35ac3 /dts/Bindings/powerpc | |
parent | 89b766c63f94b5fe94db75a6f197c9e6c0f9da7e (diff) | |
download | barebox-119c632f12509eab4bc58daf629c4b16fffcedca.tar.gz barebox-119c632f12509eab4bc58daf629c4b16fffcedca.tar.xz |
dts: update to v5.10-rc1
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'dts/Bindings/powerpc')
-rw-r--r-- | dts/Bindings/powerpc/sleep.yaml | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/dts/Bindings/powerpc/sleep.yaml b/dts/Bindings/powerpc/sleep.yaml new file mode 100644 index 0000000000..6494c7d08b --- /dev/null +++ b/dts/Bindings/powerpc/sleep.yaml @@ -0,0 +1,47 @@ +# SPDX-License-Identifier: GPL-2.0-only +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/powerpc/sleep.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: PowerPC sleep property + +maintainers: + - Rob Herring <robh@kernel.org> + +description: | + Devices on SOCs often have mechanisms for placing devices into low-power + states that are decoupled from the devices' own register blocks. Sometimes, + this information is more complicated than a cell-index property can + reasonably describe. Thus, each device controlled in such a manner + may contain a "sleep" property which describes these connections. + + The sleep property consists of one or more sleep resources, each of + which consists of a phandle to a sleep controller, followed by a + controller-specific sleep specifier of zero or more cells. + + The semantics of what type of low power modes are possible are defined + by the sleep controller. Some examples of the types of low power modes + that may be supported are: + + - Dynamic: The device may be disabled or enabled at any time. + - System Suspend: The device may request to be disabled or remain + awake during system suspend, but will not be disabled until then. + - Permanent: The device is disabled permanently (until the next hard + reset). + + Some devices may share a clock domain with each other, such that they should + only be suspended when none of the devices are in use. Where reasonable, + such nodes should be placed on a virtual bus, where the bus has the sleep + property. If the clock domain is shared among devices that cannot be + reasonably grouped in this manner, then create a virtual sleep controller + (similar to an interrupt nexus, except that defining a standardized + sleep-map should wait until its necessity is demonstrated). + +select: true + +properties: + sleep: + $ref: /schemas/types.yaml#definitions/phandle-array + +additionalProperties: true |