On Thu, Aug 25, 2016 at 7:58 AM, Icenowy Zheng <icenowy@xxxxxxxx> wrote:
>
>
> 25.08.2016, 03:36, "Maxime Ripard" <maxime.ripard@xxxxxxxxxxxxxxxxxx>:
>> 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@xxxxxxxx>
>>
>> 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.
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
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