linux-kernel - Re: [PATCH 3/3] arm64: dts: meson: add reset controller for Meson-C3 SoC

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Message-ID: <20230630161633.eym2dhxaffn2uxfv@CAB-WSD-L081021>
Date:   Fri, 30 Jun 2023 19:16:33 +0300
From:   Dmitry Rokosov <ddrokosov@...rdevices.ru>
To:     zelong dong <zelong.dong@...ogic.com>
CC:     <narmstrong@...libre.com>, <p.zabel@...gutronix.de>,
        <khilman@...libre.com>, Rob Herring <robh+dt@...nel.org>,
        <martin.blumenstingl@...glemail.com>,
        <linux-kernel@...r.kernel.org>,
        <linux-amlogic@...ts.infradead.org>,
        <linux-arm-kernel@...ts.infradead.org>, <jbrunet@...libre.com>,
        <devicetree@...r.kernel.org>, <kelvin.zhang@...ogic.com>
Subject: Re: [PATCH 3/3] arm64: dts: meson: add reset controller for Meson-C3
 SoC

Hello Zelong,

Thanks a lot for the patch, please find my comments below.

On Fri, Jun 30, 2023 at 08:10:59PM +0800, zelong dong wrote:
> From: Zelong Dong <zelong.dong@...ogic.com>
> 
> Add the reset controller device of Meson-C3 SoC family
> 
> Signed-off-by: Zelong Dong <zelong.dong@...ogic.com>
> ---
>  arch/arm64/boot/dts/amlogic/amlogic-c3.dtsi | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/amlogic/amlogic-c3.dtsi b/arch/arm64/boot/dts/amlogic/amlogic-c3.dtsi
> index 60ad4f3eef9d..62684b7a684c 100644
> --- a/arch/arm64/boot/dts/amlogic/amlogic-c3.dtsi
> +++ b/arch/arm64/boot/dts/amlogic/amlogic-c3.dtsi
> @@ -6,6 +6,7 @@
>  #include <dt-bindings/interrupt-controller/irq.h>
>  #include <dt-bindings/interrupt-controller/arm-gic.h>
>  #include <dt-bindings/gpio/gpio.h>
> +#include <dt-bindings/reset/amlogic,meson-c3-reset.h>
>  
>  / {
>  	cpus {
> @@ -82,6 +83,12 @@ uart_b: serial@...00 {
>  				clock-names = "xtal", "pclk", "baud";
>  			};
>  
> +			reset: reset-controller@...000 {
> +				compatible = "amlogic,meson-c3-reset";
> +				reg = <0x0 0x2000 0x0 0x98>;
> +				#reset-cells = <1>;
> +			};
> +

As Martin mentioned in the my review, internal apb entries should be
sorted by base reg offset. So reset-controller must be located before
uart_b.

Please refer to:

https://lore.kernel.org/linux-amlogic/CAFBinCAO14zcgY66UyJO9UxuCWf1N-Lsx=iYNTJL=cwXoJv__Q@mail.gmail.com/

>  		};
>  	};
>  };
> -- 
> 2.35.1
> 
> 
> _______________________________________________
> linux-amlogic mailing list
> linux-amlogic@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-amlogic

-- 
Thank you,
Dmitry

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