215533f02a
If the device tree property "use-system-time-ts" is defined then the timestamp used for PPS events will be the system time, otherwise it will be the monotonic boot time. Change-Id: I92fab1d8861e1d652fcb68066b417f44c1f8e29b Signed-off-by: Gustavo Solaira <gustavos@codeaurora.org>
23 lines
698 B
Text
23 lines
698 B
Text
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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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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- use-system-time-ts: use the system time via pps_get_ts as the timestamp
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if this is not defined then the timestamp will come
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from the monotonic boot time
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Example:
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pps {
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compatible = "pps-gpio";
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gpios = <&gpio2 6 0>;
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assert-falling-edge;
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};
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