On 12/30/25 04:27, Richard Acayan wrote:

This series adds support for empty endpoint nodes. It is currently RFC
because it continues an ongoing discussion on how to selectively connect
some CAMSS ports to cameras and leave others disconnected.

The SDM670 patches are for a full example. If agreed on, this should
expand to SoCs that have CAMSS.

Example SoC dtsi:

	camss: isp@00000000 {
		...

		status = "disabled";

		ports {
			#address-cells = <1>;
			#size-cells = <0>;

			port@0 {
				reg = <0>;

				camss_endpoint0: endpoint {
				};
			};

I do not see this device tree node layout as a valid one. A 'port' provides
an interface description (an option), and an 'endpoint' declares a connection
over a port (the accepted option).

 From dtschema/schemas/graph.yaml:

     Each port node contains an 'endpoint' subnode for each remote device port
     connected to this port.

This is violated in the example given by you above, when a remote device along
with its ports is just missing, thus there is no connection. A forced alternative
reading may (or will) break the legacy, so in this particular case you shall
start from making a change to the shared graph.yaml documentation, since it's
all not about CAMSS or even linux-media specifics.

-- 
Best wishes,
Vladimir