The Image Sensing Interface (ISI) combines image processing pipelines with DMA engines to process and capture frames originating from a variety of sources. The inputs to the ISI go through Pixel Link interfaces, and their number and nature is SoC-dependent. They cover both capture interfaces (MIPI CSI-2 RX, HDMI RX) and memory inputs. Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> --- Changes since v2: - Describe the interrupts property - Set global minItems and maxItems for interrupts - Set maxItems for power-domains Changes since v1: - Fix compatible string checks in conditional schema - Fix interrupts property handling --- .../bindings/media/nxp,imx8-isi.yaml | 152 ++++++++++++++++++ 1 file changed, 152 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/nxp,imx8-isi.yaml diff --git a/Documentation/devicetree/bindings/media/nxp,imx8-isi.yaml b/Documentation/devicetree/bindings/media/nxp,imx8-isi.yaml new file mode 100644 index 000000000000..130fa41b9d8e --- /dev/null +++ b/Documentation/devicetree/bindings/media/nxp,imx8-isi.yaml @@ -0,0 +1,152 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/media/nxp,imx8-isi.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: i.MX8 Image Sensing Interface + +maintainers: + - Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> + +description: | + The Image Sensing Interface (ISI) combines image processing pipelines with + DMA engines to process and capture frames originating from a variety of + sources. The inputs to the ISI go through Pixel Link interfaces, and their + number and nature is SoC-dependent. They cover both capture interfaces (MIPI + CSI-2 RX, HDMI RX, ...) and display engine outputs for writeback support. + +properties: + compatible: + enum: + - fsl,imx8mn-isi + - fsl,imx8mp-isi + + reg: + maxItems: 1 + + clocks: + items: + - description: The AXI clock + - description: The APB clock + # TODO: Check if the per-channel ipg_proc_clk clocks need to be specified + # as well, in case some SoCs have the ability to control them separately. + # This may be the case of the i.MX8[DQ]X(P) + + clock-names: + items: + - const: axi + - const: apb + + fsl,blk-ctrl: + $ref: /schemas/types.yaml#/definitions/phandle + description: + A phandle referencing the block control that contains the CSIS to ISI + gasket. + + interrupts: + description: Processing pipeline interrupts, one per pipeline + minItems: 1 + maxItems: 2 + + power-domains: + maxItems: 1 + + ports: + $ref: /schemas/graph.yaml#/properties/ports + description: | + Ports represent the Pixel Link inputs to the ISI. Their number and + assignment are model-dependent. Each port shall have a single endpoint. + + patternProperties: + "^port@[0-9]$": + $ref: /schemas/graph.yaml#/properties/port + unevaluatedProperties: false + + unevaluatedProperties: false + +required: + - compatible + - reg + - interrupts + - clocks + - clock-names + - fsl,blk-ctrl + - ports + +allOf: + - if: + properties: + compatible: + contains: + const: fsl,imx8mn-isi + then: + properties: + interrupts: + maxItems: 1 + ports: + properties: + port@0: + description: MIPI CSI-2 RX + required: + - port@0 + + - if: + properties: + compatible: + contains: + const: fsl,imx8mp-isi + then: + properties: + interrupts: + maxItems: 2 + ports: + properties: + port@0: + description: MIPI CSI-2 RX 0 + port@1: + description: MIPI CSI-2 RX 1 + required: + - port@0 + - port@1 + +additionalProperties: false + +examples: + - | + #include <dt-bindings/clock/imx8mp-clock.h> + #include <dt-bindings/interrupt-controller/arm-gic.h> + #include <dt-bindings/interrupt-controller/irq.h> + + isi@32e00000 { + compatible = "fsl,imx8mp-isi"; + reg = <0x32e00000 0x4000>; + interrupts = <GIC_SPI 16 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 42 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&clk IMX8MP_CLK_MEDIA_AXI_ROOT>, + <&clk IMX8MP_CLK_MEDIA_APB_ROOT>; + clock-names = "axi", "apb"; + fsl,blk-ctrl = <&media_blk_ctrl>; + power-domains = <&mediamix_pd>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + isi_in_0: endpoint { + remote-endpoint = <&mipi_csi_0_out>; + }; + }; + + port@1 { + reg = <1>; + isi_in_1: endpoint { + remote-endpoint = <&mipi_csi_1_out>; + }; + }; + }; + }; + +... -- Regards, Laurent Pinchart
