mirror of
https://github.com/Evolution-X-Devices/kernel_xiaomi_sm8450-devicetrees
synced 2026-02-01 08:51:30 +00:00
b0e5152a74
Add devicetree bindings snapshot to the devicetree project.
This snapshot is taken as of the
'commit 5fba1b18cfc72e264e5f3ce49020ed322aa6ac9f ("Merge 5.6-rc3
into android-mainline")' of the kernel project.
Change-Id: Ia087ab2b7d4a2616ea446a69683a8b5b821d0448
31 lines
860 B
Plaintext
31 lines
860 B
Plaintext
Device-Tree Bindings for a PPS Signal on GPIO
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These properties describe a PPS (pulse-per-second) signal connected to
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a GPIO pin.
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Required properties:
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- compatible: should be "pps-gpio"
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- gpios: one PPS GPIO in the format described by ../gpio/gpio.txt
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Additional required properties for the PPS ECHO functionality:
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- echo-gpios: one PPS ECHO GPIO in the format described by ../gpio/gpio.txt
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- echo-active-ms: duration in ms of the active portion of the echo pulse
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Optional properties:
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- assert-falling-edge: when present, assert is indicated by a falling edge
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(instead of by a rising edge)
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Example:
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pps {
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pinctrl-names = "default";
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pinctrl-0 = <&pinctrl_pps>;
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gpios = <&gpio1 26 GPIO_ACTIVE_HIGH>;
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assert-falling-edge;
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echo-gpios = <&gpio1 27 GPIO_ACTIVE_HIGH>;
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echo-active-ms = <100>;
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compatible = "pps-gpio";
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};
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