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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/raspberrypi,rp1-cfe.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Raspberry Pi PiSP Camera Front End
+
+maintainers:
+ - Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
+ - Raspberry Pi Kernel Maintenance <kernel-list@raspberrypi.com>
+
+description: |
+ The Raspberry Pi PiSP Camera Front End is a module in Raspberrypi 5's RP1 I/O
+ controller, that contains:
+ - MIPI D-PHY
+ - MIPI CSI-2 receiver
+ - Simple image processor (called PiSP Front End, or FE)
+
+ The FE documentation is available at:
+ https://datasheets.raspberrypi.com/camera/raspberry-pi-image-signal-processor-specification.pdf
+
+ The PHY and CSI-2 receiver part have no public documentation.
+
+properties:
+ compatible:
+ items:
+ - const: raspberrypi,rp1-cfe
+
+ reg:
+ items:
+ - description: CSI-2 registers
+ - description: D-PHY registers
+ - description: MIPI CFG (a simple top-level mux) registers
+ - description: FE registers
+
+ interrupts:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+ port:
+ $ref: /schemas/graph.yaml#/$defs/port-base
+ additionalProperties: false
+ description: CSI-2 RX Port
+
+ properties:
+ endpoint:
+ $ref: video-interfaces.yaml#
+ unevaluatedProperties: false
+
+ properties:
+ data-lanes:
+ minItems: 1
+ maxItems: 4
+
+ clock-lanes:
+ maxItems: 1
+
+ required:
+ - clock-lanes
+ - data-lanes
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - clocks
+
+additionalProperties: false
+
+examples:
+ - |
+ rp1 {
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ csi@110000 {
+ compatible = "raspberrypi,rp1-cfe";
+ reg = <0xc0 0x40110000 0x0 0x100>,
+ <0xc0 0x40114000 0x0 0x100>,
+ <0xc0 0x40120000 0x0 0x100>,
+ <0xc0 0x40124000 0x0 0x1000>;
+
+ interrupts = <42>;
+
+ clocks = <&rp1_clocks>;
+
+ port {
+ csi_ep: endpoint {
+ remote-endpoint = <&cam_endpoint>;
+ clock-lanes = <0>;
+ data-lanes = <1 2>;
+ };
+ };
+ };
+ };