0f2ecb8fa2
Document the fact that the trigger signal is now optional, and describe the behavior when this is used. While at it, fix a typo, and paraphrase a sentence to be less platform specific. Signed-off-by: Frans Klaver <frans.klaver@xsens.com> Signed-off-by: Sebastian Reichel <sre@kernel.org>
30 lines
951 B
Plaintext
30 lines
951 B
Plaintext
Binding for the LTC2952 PowerPath controller
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This chip is used to externally trigger a system shut down. Once the trigger has
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been sent, the chip's watchdog has to be reset to gracefully shut down.
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A full powerdown can be triggered via the kill signal.
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Required properties:
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- compatible: Must contain: "lltc,ltc2952"
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- watchdog-gpios: phandle + gpio-specifier for the GPIO connected to the
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chip's watchdog line
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- kill-gpios: phandle + gpio-specifier for the GPIO connected to the
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chip's kill line
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Optional properties:
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- trigger-gpios: phandle + gpio-specifier for the GPIO connected to the
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chip's trigger line. If this property is not set, the
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trigger function is ignored and the chip is kept alive
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until an explicit kill signal is received
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Example:
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ltc2952 {
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compatible = "lltc,ltc2952";
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trigger-gpios = <&gpio0 1 GPIO_ACTIVE_LOW>;
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watchdog-gpios = <&gpio1 2 GPIO_ACTIVE_HIGH>;
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kill-gpios = <&gpio0 2 GPIO_ACTIVE_LOW>;
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};
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