Re: [PATCH 3/3] soundwire: bus_type: add sdw_master_device support

...

• md = &bus->md;
• md->dev.bus = &sdw_bus_type;
• md->dev.type = &sdw_master_type;
• md->dev.parent = parent;
• md->dev.of_node = parent->of_node;
• md->dev.fwnode = fwnode;
• md->dev.dma_mask = parent->dma_mask;
• dev_set_name(&md->dev, "sdw-master-%d", bus->link_id);

This give nice sdw-master-0. In DT this comes from reg property. I dont seem to recall if the ACPI/Disco spec treats link_id as unique across the system, can you check that please, if not we would need to update this.

Table 3 in the Disco for Soundwire 1.0 spec: "all LinkID values are relative to the immediate parent Device."

There isn't any known implementation with more than one controller.