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From:   Vinay Simha B N <simhavcs@gmail.com>
Date:   Thu, 19 Mar 2020 13:01:10 +0530
Message-ID: <CAGWqDJ7AccvoxjKfQJ3GytJ-+u56Bk3rEn0sSYv-zCuBe1brAg@mail.gmail.com>
Subject: graph connection to node is not bidirectional kernel-5.6.0-rc6
To:     "open list:DRM DRIVER FOR MSM ADRENO GPU" 
        <freedreno@lists.freedesktop.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@vger.kernel.org>,
        open list <linux-kernel@vger.kernel.org>,
        Andrzej Hajda <a.hajda@samsung.com>,
        Laurent Pinchart <Laurent.pinchart@ideasonboard.com>
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Sender: linux-kernel-owner@vger.kernel.org
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hi,

I am getting the endpoint' is not bidirectional(d2l_in, dsi0_out)
warning in compilation, built boot image works on qcom apq8016-ifc6309
board with the dsi->bridge->lvds panel.
Because of this warning i cannot create a .yaml documentation examples.
Please suggest.

tc_bridge: bridge@f {
status = "okay";
    ports {
    #address-cells = <1>;
    #size-cells = <0>;

    port@0 {
        reg = <0>;
        d2l_in: endpoint {
            remote-endpoint = <&dsi0_out>;
        };
    };
};

dsi@1a98000 {
    status = "okay";
...
    ports {
        port@1 {
            dsi0_out:endpoint {
                remote-endpoint = <&d2l_in>;
                data-lanes = <0 1 2 3>;
            };
        };
    };
};

https://github.com/vinaysimhabn/kernel-msm/blob/1cbd104cca4ebfb111c92e939ca09f82aac00aa1/arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi
https://github.com/vinaysimhabn/kernel-msm/blob/08e4821646b5c128559c506a5777d8782f1ff79e/Documentation/devicetree/bindings/display/bridge/toshiba%2Ctc358775.yaml

arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi:253.28-255.9: Warning
(graph_endpoint): /soc/i2c@78b8000/bridge@39/ports/port@0/endpoint:
graph connection to node
'/soc/mdss@1a00000/dsi@1a98000/ports/port@1/endpoint' is not
bidirectional
arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi:333.53-335.35: Warning
(graph_endpoint): /soc/auo,b101xtn01/port/endpoint: graph connection
to node '/soc/i2c@78b8000/bridge@f/ports/port@1/endpoint' is not
bidirectional

-- 
regards,
vinaysimha