[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:

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

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?Hi,

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

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??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.

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??---
???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

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?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