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author | Sascha Hauer <s.hauer@pengutronix.de> | 2022-01-27 11:22:53 +0100 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2022-01-28 15:31:59 +0100 |
commit | 5f3e773ca4830daf71c7b5eee0c6b1dfe4d09c08 (patch) | |
tree | 0634f20e5f75f3d44242af47eebd9ea1ce0163f6 /dts/Bindings/power/reset/gpio-poweroff.yaml | |
parent | db35548372eaee835fbf9bae68c08362ba59d49d (diff) | |
download | barebox-5f3e773ca4830daf71c7b5eee0c6b1dfe4d09c08.tar.gz barebox-5f3e773ca4830daf71c7b5eee0c6b1dfe4d09c08.tar.xz |
dts: update to v5.17-rc1
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'dts/Bindings/power/reset/gpio-poweroff.yaml')
-rw-r--r-- | dts/Bindings/power/reset/gpio-poweroff.yaml | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/dts/Bindings/power/reset/gpio-poweroff.yaml b/dts/Bindings/power/reset/gpio-poweroff.yaml new file mode 100644 index 0000000000..45d66c7751 --- /dev/null +++ b/dts/Bindings/power/reset/gpio-poweroff.yaml @@ -0,0 +1,59 @@ +# SPDX-License-Identifier: (GPL-2.0-only or BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/power/reset/gpio-poweroff.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: GPIO controlled power off + +maintainers: + - Sebastian Reichel <sre@kernel.org> + +description: > + System power off support via a GPIO line. When a shutdown is + executed the operating system is expected to switch the GPIO + from inactive to active. After a delay (active-delay-ms) it + is expected to be switched back to inactive. After another + delay (inactive-delay-ms) it is configured as active again. + Finally the operating system assumes the power off failed if + the system is still running after waiting some time (timeout-ms). + +properties: + compatible: + const: gpio-poweroff + + gpios: + maxItems: 1 + + input: + type: boolean + description: > + Initially configure the GPIO line as an input. Only reconfigure + it to an output when the power-off sequence is initiated. If this optional + property is not specified, the GPIO is initialized as an output in its inactive state. + + active-delay-ms: + default: 100 + description: Delay to wait after driving gpio active + + inactive-delay-ms: + default: 100 + description: Delay to wait after driving gpio inactive + + timeout-ms: + default: 3000 + description: Time to wait before assuming the power off sequence failed. + +required: + - compatible + - gpios + +additionalProperties: false + +examples: + - | + gpio-poweroff { + compatible = "gpio-poweroff"; + gpios = <&gpio 4 0>; + timeout-ms = <3000>; + }; |