[PATCH] ARM: dts: DRA7: Add aliases for all serial ports
tony at atomide.com
Mon Nov 10 15:49:38 PST 2014
* Nishanth Menon <nm at ti.com> [141021 13:08]:
> On 10/21/2014 02:57 PM, Arnd Bergmann wrote:
> > On Tuesday 21 October 2014 11:18:15 Nishanth Menon wrote:
> >> Add serial port aliases for consoles > 6.
> >> Signed-off-by: Nishanth Menon <nm at ti.com>
> >> ---
> >> arch/arm/boot/dts/dra7.dtsi | 4 ++++
> >> 1 file changed, 4 insertions(+)
> >> diff --git a/arch/arm/boot/dts/dra7.dtsi b/arch/arm/boot/dts/dra7.dtsi
> >> index 9cc9843..208dd83 100644
> >> --- a/arch/arm/boot/dts/dra7.dtsi
> >> +++ b/arch/arm/boot/dts/dra7.dtsi
> >> @@ -34,6 +34,10 @@
> >> serial3 = &uart4;
> >> serial4 = &uart5;
> >> serial5 = &uart6;
> >> + serial6 = &uart7;
> >> + serial7 = &uart8;
> >> + serial8 = &uart9;
> >> + serial9 = &uart10;
> > I think this was wrong to start with: The aliases should be in the per-board
> > .dts file and only list the ones that are actually connected to the outside.
> > Otherwise the numbering won't match what's written on the board.
> At least in the case of DRA7 boards, they are not written specifically
> since they come out over onboard FTDI usb2serial.
> This will at least ensure that /dev/ttyO9 will always point to uart10
> no matter the board, instead of having ttyO0 always pointing to
> console serial port no matter the board (and having to guess which
> figure out it actually was aliased to).
It seems that having the UART numbering make sense is a good reason
to apply this one. So applying into omap-for-v3.19/dt.
More information about the linux-arm-kernel