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04fcddac28
There are already several helpers to find a udevice based on its position in a device tree, like getting a child or a node pointed by a phandle, but there was no support for graph endpoints, which are very common in display pipelines. Add a new helper, named uclass_get_device_by_endpoint() which enters the child graph reprensentation, looks for a specific port, then follows the remote endpoint, and finally retrieves the first parent of the given uclass_id. This is a very handy and straightforward way to get a bridge or a panel handle. Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>