On 11/12/2014 05:20 AM, Thierry Reding wrote:
On Tue, Nov 11, 2014 at 12:49:30PM -0800, Olof Johansson wrote:
There are general changes pending to make the /aliases/serial* entries
number the serial ports on the system. On tegra, so far the ports have been
just numbered dynamically as they are configured so that makes them change.
To avoid this, add specific aliases per board to keep the old numbers. This
allows us to change the numbering by default on future SoCs while keeping the
numbering on existing boards.
...
I have applied this to the for-3.19/dt branch. So for anything that is
post Tegra124 the new rule shall be to add aliases to the SoC .dtsi and
then use consistent numbering of UART ports across boards?
The alternative is to remain consistent with what this patch does, which
would be to make the serial port numbering a property of the board. That
doesn't sound too bad to me either since it'll hide all the unused ports
on a given board.
For new SoCs, I think board-specific aliases would make most sense. That
would be consistent with this patch. The only question I had was for
existing SoCs, should we make the switch this patch does, or leave the
aliases inactive there? New SoCs should use more sensible aliases.
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