Commits on Jul 31, 2024

1. checks: relax graph checks for overlays …

   In device tree overlays, the following patterns occur frequently:
   
   board.dts:
   /dts-v1/;
   
   / {
   	display-controller {
   		ports {
   			#address-cells = <1>;
   			#size-cells = <0>;
   
   			vp0: port@0 {
   				reg = <0>;
   
   				vp0_out: endpoint {
   				};
   			};
   
   			vp1: port@1 {
   				reg = <1>;
   			};
   		};
   	};
   };
   
   overlay-endpoint.dtso:
   /dts-v1/;
   /plugin/;
   
   &{/} {
   	hdmi-tx-connector {
   		port {
   			hdmi_tx_in: endpoint {
   				remote-endpoint = <&vp0_out>;
   			};
   		};
   	};
   };
   
   &vp0_out {
   	remote-endpoint = <&hdmi_tx_in>;
   };
   
   In this case, dtc expects that the node referenced by &vp0_out is
   named "endpoint", but the name cannot be inferred. Also, dtc
   complains about the connections between the endpoints not being
   bidirectional.
   
   Similarly, for a different overlay overlay-port.dtso:
   /dts-v1/;
   /plugin/;
   
   &{/} {
   	panel {
   		port {
   			panel_in: endpoint {
   				remote-endpoint = <&vp1_out>;
   			};
   		};
   	};
   };
   
   &vp1 {
   	vp1_out: endpoint {
   		remote-endpoint = <&panel_in>;
   	};
   };
   
   dtc expects that the node referenced by &vp1 is named "port", but the
   name cannot be inferred.
   
   Relax the corresponding checks and skip the parts that are not reasonable
   for device tree overlays.
   
   Signed-off-by: Michael Riesch <[email protected]>

   

   mriesch-wv committed Jul 31, 2024
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