From: icenowy@aosc•xyz (Icenowy Zheng)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH 2/2] ARM: dts: sun8i: enable UART1 for iNet D978 Rev2 board
Date: Thu, 25 Aug 2016 14:57:24 +0800 [thread overview]
Message-ID: <97321472108244@web8m.yandex.ru> (raw)
In-Reply-To: <CAGb2v66tFENk8QBw7D1+bwFN-zWaE2SGDrNyc-zdbJSRzENk4Q@mail.gmail.com>
25.08.2016, 12:41, "Chen-Yu Tsai" <wens@csie•org>:
> On Thu, Aug 25, 2016 at 7:58 AM, Icenowy Zheng <icenowy@aosc•xyz> wrote:
>> ?25.08.2016, 03:36, "Maxime Ripard" <maxime.ripard@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@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
next prev parent reply other threads:[~2016-08-25 6:57 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-23 6:44 [PATCH 0/2] Add support for iNet D978 Rev2 board Icenowy Zheng
2016-08-23 6:44 ` [PATCH 1/2] ARM: dts: sun8i: Add dts file for inet-d978_rev2 tablets Icenowy Zheng
2016-08-24 19:32 ` Maxime Ripard
2016-08-24 23:57 ` Icenowy Zheng
2016-08-25 7:35 ` Maxime Ripard
2016-08-23 6:44 ` [PATCH 2/2] ARM: dts: sun8i: enable UART1 for iNet D978 Rev2 board Icenowy Zheng
2016-08-24 19:36 ` Maxime Ripard
2016-08-24 23:58 ` Icenowy Zheng
2016-08-25 4:40 ` Chen-Yu Tsai
2016-08-25 6:57 ` Icenowy Zheng [this message]
2016-08-25 8:03 ` Maxime Ripard
2016-08-25 14:12 ` Icenowy Zheng
2016-08-25 14:17 ` Hans de Goede
2016-08-25 14:53 ` Icenowy Zheng
2016-08-25 14:53 ` Icenowy Zheng
2016-08-25 15:13 ` Hans de Goede
2016-08-25 15:29 ` Icenowy Zheng
2016-08-25 20:47 ` Maxime Ripard
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