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

25.08.2016, 12:41, "Chen-Yu Tsai" [off-list ref]:

On Thu, Aug 25, 2016 at 7:58 AM, Icenowy Zheng [off-list ref] wrote:

quoted

 25.08.2016, 03:36, "Maxime Ripard" [off-list ref]:

quoted

 Hi,

 On Tue, Aug 23, 2016 at 02:44:51PM +0800, Icenowy Zheng wrote:

quoted

  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 [off-list ref]

 I guess you could fold that patch into the previous one.

quoted

  ---
   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

quoted

quoted

 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

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