[PATCH v3 1/2] dt-bindings: media: i2c: Add bindings for AP1302 and AR0144

From: Frank Li
Date: Mon Jun 23 2025 - 15:18:37 EST

From: Anil Kumar Mamidala <anil.mamidala@xxxxxxxxxx>

The AP1302 is a standalone ISP for ON Semiconductor sensors, which can
connect RAW sensors (AR0144).

Add corresponding DT bindings.

Signed-off-by: Anil Kumar Mamidala <anil.mamidala@xxxxxxxxxx>
Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
Signed-off-by: Stefan Hladnik <stefan.hladnik@xxxxxxxxx>
Signed-off-by: Florian Rebaudo <frebaudo@xxxxxxxxxxx>
Signed-off-by: Frank Li <Frank.Li@xxxxxxx>
---
Previous try:
https://lore.kernel.org/linux-media/1631091372-16191-2-git-send-email-anil.mamidala@xxxxxxxxxx/

Change in v3:
- Move sensors under ports
- use compatible string to indentify connected raw sensors
- Add onnn,ar0144.yaml
---
.../devicetree/bindings/media/i2c/onnn,ap1302.yaml | 151 +++++++++++++++++++++
.../devicetree/bindings/media/i2c/onnn,ar0144.yaml | 75 ++++++++++
MAINTAINERS | 9 ++
3 files changed, 235 insertions(+)

diff --git a/Documentation/devicetree/bindings/media/i2c/onnn,ap1302.yaml b/Documentation/devicetree/bindings/media/i2c/onnn,ap1302.yaml
new file mode 100644
index 0000000000000..6b745dcf3fd3f
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/i2c/onnn,ap1302.yaml
@@ -0,0 +1,151 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/i2c/onnn,ap1302.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ON Semiconductor AP1302 Advanced Image Coprocessor
+
+maintainers:
+ - Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
+ - Anil Kumar M <anil.mamidala@xxxxxxxxxx>
+
+description:
+ The AP1302 is a standalone ISP for ON Semiconductor sensors. It interfaces to
+ up to two RAW CMOS sensors over MIPI CSI-2 connections, processes the two
+ video streams and outputs YUV frames to the host over a MIPI CSI-2 interface.
+ Frames are output side by side or on two virtual channels.
+
+ The sensors must be identical. They are connected to the AP1302 on dedicated
+ I2C buses, and are controlled by the AP1302 firmware. They are not accessible
+ from the host.
+
+properties:
+ compatible:
+ const: onnn,ap1302
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ items:
+ - description:
+ Reference to the CLK clock.
+
+ reset-gpios:
+ items:
+ - description:
+ Reference to the GPIO connected to the RST pin (active low).
+
+ standby-gpios:
+ items:
+ - description:
+ Reference to the GPIO connected to the STANDBY pin (active high).
+
+ enable-gpios:
+ items:
+ - description:
+ Reference to the GPIO connected to the EN pin (active high).
+
+ dvdd-supply: true
+
+ hmisc-supply: true
+
+ smisc-supply: true
+
+ ports:
+ $ref: /schemas/graph.yaml#/properties/ports
+ unevaluatedProperties: false
+
+ patternProperties:
+ "^port@[01]":
+ description:
+ Sensors connected to the first and second input, if no sensor
+ connect, isp generate test pattern. The compatible string under
+ port@0 and port@1 have to be the same.
+
+ allOf:
+ - $ref: /schemas/graph.yaml#/$defs/port-base
+ - $ref: onnn,ar0144.yaml
+
+ unevaluatedProperties: false
+
+ properties:
+ port@2:
+ $ref: /schemas/graph.yaml#/$defs/port-base
+ unevaluatedProperties: false
+ properties:
+ endpoint:
+ $ref: /schemas/media/video-interfaces.yaml#
+ unevaluatedProperties: false
+ properties:
+ clock-noncontinuous:
+ type: boolean
+
+ data-lanes:
+ oneOf:
+ - items:
+ - const: 1
+ - items:
+ - const: 1
+ - const: 2
+ - items:
+ - const: 1
+ - const: 2
+ - const: 3
+ - const: 4
+
+ required:
+ - data-lanes
+
+ required:
+ - port@2
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - ports
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ camera@3c {
+ compatible = "onnn,ap1302";
+ reg = <0x3c>;
+
+ clocks = <&clk24mhz>;
+
+ reset-gpios = <&pio 102 GPIO_ACTIVE_LOW>;
+ standby-gpios = <&pio 40 GPIO_ACTIVE_HIGH>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ compatible = "onnn,ar0144";
+ reg = <0>;
+ vaa-supply = <&vaa_regulator>;
+ };
+
+ port@2 {
+ reg = <2>;
+
+ endpoint {
+ remote-endpoint = <&seninf_in1>;
+ clock-noncontinuous;
+ data-lanes = <1 2 3 4>;
+ };
+ };
+ };
+ };
+ };
+...
diff --git a/Documentation/devicetree/bindings/media/i2c/onnn,ar0144.yaml b/Documentation/devicetree/bindings/media/i2c/onnn,ar0144.yaml
new file mode 100644
index 0000000000000..68562cf4c00ca
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/i2c/onnn,ar0144.yaml
@@ -0,0 +1,75 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/i2c/onnn,ar0144.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ON Semiconductor AP0144 RAW CMOS sensor
+
+maintainers:
+ - Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
+ - Anil Kumar M <anil.mamidala@xxxxxxxxxx>
+
+description:
+ AP0144 RAW CMOS can be use standalone with any SOCs, or work with AP1302
+ ISP.
+
+properties:
+ compatible:
+ enum:
+ - onnn,ar0144
+ - onnn,ar0330
+ - onnn,ar1335
+
+ reg:
+ maxItems: 1
+
+ vaa-supply: true
+
+ vdd-supply: true
+
+ vddio-supply: true
+
+ vddpll-supply: true
+
+ port:
+ $ref: /schemas/graph.yaml#/$defs/port-base
+ additionalProperties: false
+
+ properties:
+ endpoint:
+ $ref: /schemas/media/video-interfaces.yaml#
+ unevaluatedProperties: false
+
+required:
+ - compatible
+ - reg
+
+allOf:
+ - if:
+ properties:
+ compatible:
+ not:
+ contains:
+ const: onnn,ar0330
+ then:
+ properties:
+ vddpll-supply: false
+
+additionalProperties: false
+
+examples:
+ - |
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ camera@10 {
+ compatible = "onnn,ar0144";
+ reg = <0x10>;
+ vaa-supply = <&vaa>;
+ vddio-supply = <&vddio>;
+ vdd-supply = <&vdd>;
+ };
+ };
+
diff --git a/MAINTAINERS b/MAINTAINERS
index d6f1670290589..1362d351f2574 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1766,6 +1766,15 @@ L: linux-sound@xxxxxxxxxxxxxxx
S: Maintained
F: sound/aoa/

+AP1302 ON SEMICONDUCTOR ISP DRIVER
+M: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
+R: Frank Li <Frank.Li@xxxxxxx>
+L: linux-media@xxxxxxxxxxxxxxx
+S: Maintained
+T: git git://linuxtv.org/media.git
+F: Documentation/devicetree/bindings/media/i2c/onnn,ap1302.yaml
+F: Documentation/devicetree/bindings/media/i2c/onnn,ar0144.yaml
+
APEX EMBEDDED SYSTEMS STX104 IIO DRIVER
M: William Breathitt Gray <wbg@xxxxxxxxxx>
L: linux-iio@xxxxxxxxxxxxxxx

--
2.34.1