How do /dev/ttyS* devices get assigned from the device tree?

Baruch Siach baruch at tkos.co.il
Sat Jul 9 12:37:31 PDT 2016


Hi Patrick,

On Fri, Jul 08, 2016 at 12:58:06PM -0400, Patrick Doyle wrote:
> Do they show up numerically in the sequence in which they appear in
> the device tree?
> 
> Where could I learn more?

Adding devicetree ML to Cc.

You may use an "aliases" node for that, if your UART driver supports that. The 
8250/16550 driver does. See arch/arm/boot/dts/aspeed-ast2500-evb.dts, for 
example. Note though that the use of aliases for this purpose is contentious.

baruch

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