linux-kernel - Re: [PATCH v1 5/5] arm64: dts: meson: a1: change uart compatible string

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Date:   Tue, 4 Jul 2023 18:02:58 +0100
From:   Conor Dooley <conor@...nel.org>
To:     Dmitry Rokosov <ddrokosov@...rdevices.ru>
Cc:     gregkh@...uxfoundation.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        neil.armstrong@...aro.org, jbrunet@...libre.com,
        jirislaby@...nel.org, khilman@...libre.com,
        martin.blumenstingl@...glemail.com, kelvin.zhang@...ogic.com,
        xianwei.zhao@...ogic.com, kernel@...rdevices.ru,
        rockosov@...il.com, linux-amlogic@...ts.infradead.org,
        linux-serial@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v1 5/5] arm64: dts: meson: a1: change uart compatible
 string

On Tue, Jul 04, 2023 at 04:59:36PM +0300, Dmitry Rokosov wrote:
> In the current implementation, the meson-a1 configuration incorporates a
> unique compatibility tag "amlogic,meson-a1-uart' within the meson-uart
> driver due to its usage of the new console device name "ttyS".
> Consequently, the previous compatibility tag designated for the
> 'amlogic,meson-gx-uart' configuration has become obsolete and is no
> longer relevant to the current setup.

I don't really see why you would remove the gx-uart to be honest, and
not use it as a fallback. Neil's platform though, so his call :)

> 
> Signed-off-by: Dmitry Rokosov <ddrokosov@...rdevices.ru>
> ---
>  arch/arm64/boot/dts/amlogic/meson-a1.dtsi | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/amlogic/meson-a1.dtsi b/arch/arm64/boot/dts/amlogic/meson-a1.dtsi
> index c5567031ba12..6273b9c862b3 100644
> --- a/arch/arm64/boot/dts/amlogic/meson-a1.dtsi
> +++ b/arch/arm64/boot/dts/amlogic/meson-a1.dtsi
> @@ -344,7 +344,7 @@ mux {
>  			};
>  
>  			uart_AO: serial@...0 {
> -				compatible = "amlogic,meson-gx-uart",
> +				compatible = "amlogic,meson-a1-uart",
>  					     "amlogic,meson-ao-uart";
>  				reg = <0x0 0x1c00 0x0 0x18>;
>  				interrupts = <GIC_SPI 25 IRQ_TYPE_EDGE_RISING>;
> @@ -354,7 +354,7 @@ uart_AO: serial@...0 {
>  			};
>  
>  			uart_AO_B: serial@...0 {
> -				compatible = "amlogic,meson-gx-uart",
> +				compatible = "amlogic,meson-a1-uart",
>  					     "amlogic,meson-ao-uart";
>  				reg = <0x0 0x2000 0x0 0x18>;
>  				interrupts = <GIC_SPI 26 IRQ_TYPE_EDGE_RISING>;
> -- 
> 2.36.0
> 

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