Hello, I've recently reviewed a patch adding serial port aliases to the device tree and would like to pick your brains about a disagreement I had with the developer. The SoC includes 8 serial ports. They are all disabled in the SoC .dtsi, and enabled selectively by board DT files. As not all serial ports are available on all boards, the question was whether to add aliases for all ports (in the .dtsi in this case) like serial0 = &scif0; serial1 = &scif1; serial2 = &scif2; serial3 = &scif3; serial4 = &scif4; serial5 = &scif5; serial6 = &scif6; serial7 = &scif7; or to just add aliases for the enabled ports (in the board DT file) like serial0 = &scif2; serial1 = &scif3; Note the numbering in the latter case: as the board doesn't use serial ports 0 and 1, hardware ports 2 and 3 become logical ports 0 and 1. I considered that having Linux create ttySC0 and ttySC1 devices for the first two ports of the board, regardless of which hardware ports are used, is simpler from a user point of view (it allows sharing the same inittab settings for the console serial port across several boards for instance). I'd appreciate feedback on that. -- Regards, Laurent Pinchart -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html