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    Subject[RFC PATCH v1 10/18] dt-bindings: tegra: Document VI and CSI port nodes
    Date
    This patch documents Tegra VI and CSI port and endpoint nodes along
    with the other required properties.

    Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com>
    ---
    .../display/tegra/nvidia,tegra20-host1x.txt | 87 ++++++++++++++++++++++
    1 file changed, 87 insertions(+)

    diff --git a/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.txt b/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.txt
    index 4731921..f70a838 100644
    --- a/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.txt
    +++ b/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.txt
    @@ -65,6 +65,48 @@ of the following host1x client modules:
    - power-domains: Must include sor powergate node as csicil is in
    SOR partition.

    + Optional properties for csi node:
    +
    + - channel nodes: Max upto 6 channels/streams are supported with each CSI
    + brick can as either x4 or x2 based on hw connectivity to sensor.
    +
    + Required properties:
    + - reg: channel/stream index
    + - nvidia,mipi-calibrate: Should contain a phandle and a specifier
    + specifying which pads are used by this CSI port and need to be
    + calibrated. See also ../display/tegra/nvidia,tegra114-mipi.txt.
    +
    + - port: CSI port node and its endpoint nodes as per device graph
    + bindings defined in Documentation/devicetree/bindings/graph.txt.
    + Required properties:
    + - reg: csi port index based on hw csi lanes connectivity to the
    + sensor.
    + - bus-width: number of lanes used by this port. Supported lanes
    + are 1/2/4.
    + - endpoint@0: sink node
    + Required properties:
    + - reg: endpoint id. This is used to retrieve pad for creating
    + media link
    + - remote-endpoint: phandle to sensor endpoint
    + - endpoint@1: source node
    + - reg: endpoint id. This is used to retrieve pad for creating
    + media link
    + - remote-endpoint: phandle to vi port endpoint
    +
    + Optional properties for vi node:
    + - ports: Video port nodes and endpoint nodes as per device graph bindings
    + defined in Documentation/devicetree/bindings/graph.txt
    + Max 6 ports are supported and each port should have one endpoint node.
    +
    + Required properties:
    + - port: VI port node and its sink endpoint node
    + Required properties:
    + - reg: should match port index
    + - endpoint@0: sink node
    + Required properties:
    + - reg: endpoint id must be 0
    + - remote-endpoint: phandle to CSI endpoint node.
    +
    - epp: encoder pre-processor

    Required properties:
    @@ -340,6 +382,22 @@ Example:

    ranges = <0x0 0x0 0x54080000 0x2000>;

    + ports {
    + #address-cells = <1>;
    + #size-cells = <0>;
    +
    + port@0 {
    + reg = <0>;
    + #address-cells = <1>;
    + #size-cells = <0>;
    +
    + imx219_vi_in0: endpoint@0 {
    + reg = <0>;
    + remote-endpoint = <&imx219_csi_out0>;
    + };
    + };
    + };
    +
    csi@838 {
    compatible = "nvidia,tegra210-csi";
    reg = <0x838 0x1300>;
    @@ -362,6 +420,35 @@ Example:
    <&tegra_car TEGRA210_CLK_CSI_TPG>;
    clock-names = "csi", "cilab", "cilcd", "cile", "csi_tpg";
    power-domains = <&pd_sor>;
    +
    + #address-cells = <1>;
    + #size-cells = <0>;
    +
    + channel@0 {
    + reg = <0>;
    + nvidia,mipi-calibrate = <&mipi 0x001>;
    +
    + #address-cells = <1>;
    + #size-cells = <0>;
    +
    + port@0 {
    + reg = <0>;
    + bus-width = <2>;
    +
    + #address-cells = <1>;
    + #size-cells = <0>;
    +
    + imx219_csi_in0: endpoint@0 {
    + reg = <0>;
    + remote-endpoint = <&imx219_out0>;
    + };
    +
    + imx219_csi_out0: endpoint@1 {
    + reg = <1>;
    + remote-endpoint = <&imx219_vi_in0>;
    + };
    + };
    + };
    };
    };

    --
    2.7.4
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