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We currently get the output connected to LVDS by looking for a phandle called 'qcom,lvds-panel' under the mdp DT node. Use the more standard of_graph approach to create an lvds output port, and retrieve the panel node from the port's endpoint data. v3 - Fix return value checks of of_graph_* calls. Tested-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Archit Taneja <architt@codeaurora.org> Signed-off-by: Rob Clark <robdclark@gmail.com>