[PATCH 2/2] ARM: dts: sun8i: enable UART1 for iNet D978 Rev2 board

[Icenowy Zheng]

25.08.2016, 12:41, "Chen-Yu Tsai" <wens at csie.org>:
> On Thu, Aug 25, 2016 at 7:58 AM, Icenowy Zheng <icenowy at aosc.xyz> wrote:
>>  25.08.2016, 03:36, "Maxime Ripard" <maxime.ripard at free-electrons.com>:
>>>  Hi,
>>>
>>>  On Tue, Aug 23, 2016 at 02:44:51PM +0800, Icenowy Zheng wrote:
>>>>   UART1 is connected to the bluetooth part of RTL8723BS WiFi/BT combo card
>>>>   on iNet D978 Rev2 board.
>>>>
>>>>   Enable the UART1 to make it possible to use the modified hciattach by
>>>>   Realtek to drive the BT part of RTL8723BS.
>>>>
>>>>   Signed-off-by: Icenowy Zheng <icenowy at aosc.xyz>
>>>
>>>  I guess you could fold that patch into the previous one.
>>>
>>>>   ---
>>>>    arch/arm/boot/dts/sun8i-a33-inet-d978-rev2.dts | 11 +++++++++++
>>>>    1 file changed, 11 insertions(+)
>>>>
>>>>   diff --git a/arch/arm/boot/dts/sun8i-a33-inet-d978-rev2.dts b/arch/arm/boot/dts/sun8i-a33-inet-d978-rev2.dts
>>>>   index 78823d8..3ac22d4 100644
>>>>   --- a/arch/arm/boot/dts/sun8i-a33-inet-d978-rev2.dts
>>>>   +++ b/arch/arm/boot/dts/sun8i-a33-inet-d978-rev2.dts
>>>>   @@ -48,6 +48,10 @@
>>>>            model = "INet-D978 Rev 02";
>>>>            compatible = "primux,inet-d978-rev2", "allwinner,sun8i-a33";
>>>>
>>>>   + aliases {
>>>>   + serial1 = &uart1;
>>>>   + };
>>>>   +
>>>
>>>  Is there any other UART in the system?
>>
>>  serial0 is defined in sun8i-reference-design-tablet.dtsi, as r_uart.
>
> If your board does not have r_uart pads, then the right thing to do
> would be to disable it. You can then have uart1 as serial0.

I don't know it. The RX/TX is wired on PF2/PF4 on the board (UART0 muxed with
MMC)

But many codes will require a ttyS0 as console... So I think the bluetooth should be
located at ttyS1...

>
> AFAIK Linux requires a console, but that console can be simplefb.
>
> ChenYu
>
>>>  The alias is not supposed to be about the controller index, but the
>>>  index in the board, meaning that if you only have a single UART, that
>>>  would be serial0.
>>>
>>>  Thanks!
>>>  Maxime
>>>
>>>  --
>>>  Maxime Ripard, Free Electrons
>>>  Embedded Linux and Kernel engineering
>>>  http://free-electrons.com