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

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Date:   Wed, 24 Aug 2016 21:36:00 +0200
From:   Maxime Ripard <maxime.ripard@...e-electrons.com>
To:     Icenowy Zheng <icenowy@...c.xyz>
Cc:     Russell King <linux@...linux.org.uk>, Chen-Yu Tsai <wens@...e.org>,
        Hans de Goede <hdegoede@...hat.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] ARM: dts: sun8i: enable UART1 for iNet D978 Rev2
 board

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@...c.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?

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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