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arm: dts: overlays: Add external trigger mode support

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Adds DT property `trigger-mode` to enable FSIN-triggered frame capture.
Includes overlay and README update for ov9281_trig.

Signed-off-by: Omer Faruk Edemen <ofedemen@lectrontech.com>
This commit is contained in:
Omer Faruk Edemen
2025-09-08 10:10:37 +03:00
committed by Phil Elwell
parent e9a6531171
commit 2f7160c8af
3 changed files with 6 additions and 0 deletions
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4
arch/arm/boot/dts/overlays/README
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@@ -3737,6 +3737,10 @@ Params: rotation Mounting rotation of the camera sensor (0 or
clk-continuous Switch to continuous mode on the CSI clock lane, clk-continuous Switch to continuous mode on the CSI clock lane,
which increases the maximum frame rate slightly. which increases the maximum frame rate slightly.
Appears not to work on Pi3. Appears not to work on Pi3.
trigger-mode Enable external trigger mode (0 = normal,
1 = triggered). In this mode, the sensor outputs
a frame only when triggered by a rising edge
on the FSIN input pin.
Name: papirus Name: papirus

1
arch/arm/boot/dts/overlays/ov9281-overlay.dts
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@@ -96,6 +96,7 @@
<&reg_frag>, "target:0=",<&cam0_reg>; <&reg_frag>, "target:0=",<&cam0_reg>;
arducam = <0>, "+6"; arducam = <0>, "+6";
clk-continuous = <0>, "-7-8"; clk-continuous = <0>, "-7-8";
trigger-mode = <&cam_node>, "trigger-mode:0";
}; };
}; };

1
arch/arm/boot/dts/overlays/ov9281.dtsi
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@@ -14,6 +14,7 @@ cam_node: ov9281@60 {
rotation = <0>; rotation = <0>;
orientation = <2>; orientation = <2>;
trigger-mode = <0>;
port { port {
cam_endpoint: endpoint { cam_endpoint: endpoint {