linux-kernel - Re: [PATCH 1/6] arm64: dts: meson: vim3: add serial aliases

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Date:   Sat, 5 Jun 2021 11:52:35 +0200
From:   Martin Blumenstingl <martin.blumenstingl@...glemail.com>
To:     xieqinick@...il.com
Cc:     robh+dt@...nel.org, Neil Armstrong <narmstrong@...libre.com>,
        khilman@...libre.com, jbrunet@...libre.com,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org,
        nick@...das.com, artem@...das.com
Subject: Re: [PATCH 1/6] arm64: dts: meson: vim3: add serial aliases

On Sat, Jun 5, 2021 at 8:23 AM <xieqinick@...il.com> wrote:
>
> From: Nick Xie <nick@...das.com>
>
> Add serial aliases for Khadas VIM3/3L.
>
> Signed-off-by: Nick Xie <nick@...das.com>
> ---
>  arch/arm64/boot/dts/amlogic/meson-khadas-vim3.dtsi | 4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/amlogic/meson-khadas-vim3.dtsi b/arch/arm64/boot/dts/amlogic/meson-khadas-vim3.dtsi
> index 66d67524b031..4686ea7abe0b 100644
> --- a/arch/arm64/boot/dts/amlogic/meson-khadas-vim3.dtsi
> +++ b/arch/arm64/boot/dts/amlogic/meson-khadas-vim3.dtsi
> @@ -13,6 +13,10 @@
>  / {
>         aliases {
>                 serial0 = &uart_AO;
> +               serial1 = &uart_A;
uart_A is used for the Bluetooth module so with mainline Linux it will
not get a /dev/ttyAMLx character device
For that reason we are not adding an alias for uart_A when a new
board.dts is added

I suggest that you also drop this alias here because it is not visible
to the user ever
Same applies to VIM1 and VIM2 as well


Best regards,
Martin