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From: Rob Herring <robh@kernel.org>
To: Steen Hegelund <steen.hegelund@microchip.com>
Cc: Philipp Zabel <p.zabel@pengutronix.de>,
	Andrew Lunn <andrew@lunn.ch>,
	Microchip Linux Driver Support <UNGLinuxDriver@microchip.com>,
	Alexandre Belloni <alexandre.belloni@bootlin.com>,
	Gregory Clement <gregory.clement@bootlin.com>,
	linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org
Subject: Re: [PATCH v4 3/3] arm64: dts: reset: add microchip sparx5 switch reset driver
Date: Fri, 5 Feb 2021 16:35:26 -0600	[thread overview]
Message-ID: <20210205223526.GA3869001@robh.at.kernel.org> (raw)
In-Reply-To: <20210120081921.3315847-4-steen.hegelund@microchip.com>

On Wed, Jan 20, 2021 at 09:19:21AM +0100, Steen Hegelund wrote:
> This provides reset driver support for the Microchip Sparx5 PCB134 and
> PCB135 reference boards.

This isn't a compatible change. You need an explanation why that's okay 
if that's intended.

> 
> Signed-off-by: Steen Hegelund <steen.hegelund@microchip.com>
> ---
>  arch/arm64/boot/dts/microchip/sparx5.dtsi | 14 +++++++++++---
>  1 file changed, 11 insertions(+), 3 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/microchip/sparx5.dtsi b/arch/arm64/boot/dts/microchip/sparx5.dtsi
> index 380281f312d8..4edbb9fcdce0 100644
> --- a/arch/arm64/boot/dts/microchip/sparx5.dtsi
> +++ b/arch/arm64/boot/dts/microchip/sparx5.dtsi
> @@ -132,9 +132,17 @@ mux: mux-controller {
>  			};
>  		};
>  
> -		reset@611010008 {
> -			compatible = "microchip,sparx5-chip-reset";
> -			reg = <0x6 0x11010008 0x4>;
> +		gcb_ctrl: syscon@611010000 {
> +			compatible = "microchip,sparx5-gcb-syscon", "syscon";
> +			reg = <0x6 0x11010000 0x10000>;
> +		};
> +
> +		reset: reset-controller@0 {
> +			compatible = "microchip,sparx5-switch-reset";
> +			reg = <0x6 0x0 0x0>;

Your register length is 0?

> +			#reset-cells = <1>;
> +			cpu-syscon = <&cpu_ctrl>;

Can't you accomplish the same thing adding these to 
"microchip,sparx5-chip-reset"? Or possibly as a child node.

Define nodes based on h/w blocks, not as containers of things you happen 
to want for some driver.

> +			gcb-syscon = <&gcb_ctrl>;
>  		};
>  
>  		uart0: serial@600100000 {
> -- 
> 2.29.2
> 

WARNING: multiple messages have this Message-ID (diff)
From: Rob Herring <robh@kernel.org>
To: Steen Hegelund <steen.hegelund@microchip.com>
Cc: Andrew Lunn <andrew@lunn.ch>,
	Alexandre Belloni <alexandre.belloni@bootlin.com>,
	devicetree@vger.kernel.org,
	Gregory Clement <gregory.clement@bootlin.com>,
	linux-kernel@vger.kernel.org,
	Microchip Linux Driver Support <UNGLinuxDriver@microchip.com>,
	Philipp Zabel <p.zabel@pengutronix.de>,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v4 3/3] arm64: dts: reset: add microchip sparx5 switch reset driver
Date: Fri, 5 Feb 2021 16:35:26 -0600	[thread overview]
Message-ID: <20210205223526.GA3869001@robh.at.kernel.org> (raw)
In-Reply-To: <20210120081921.3315847-4-steen.hegelund@microchip.com>

On Wed, Jan 20, 2021 at 09:19:21AM +0100, Steen Hegelund wrote:
> This provides reset driver support for the Microchip Sparx5 PCB134 and
> PCB135 reference boards.

This isn't a compatible change. You need an explanation why that's okay 
if that's intended.

> 
> Signed-off-by: Steen Hegelund <steen.hegelund@microchip.com>
> ---
>  arch/arm64/boot/dts/microchip/sparx5.dtsi | 14 +++++++++++---
>  1 file changed, 11 insertions(+), 3 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/microchip/sparx5.dtsi b/arch/arm64/boot/dts/microchip/sparx5.dtsi
> index 380281f312d8..4edbb9fcdce0 100644
> --- a/arch/arm64/boot/dts/microchip/sparx5.dtsi
> +++ b/arch/arm64/boot/dts/microchip/sparx5.dtsi
> @@ -132,9 +132,17 @@ mux: mux-controller {
>  			};
>  		};
>  
> -		reset@611010008 {
> -			compatible = "microchip,sparx5-chip-reset";
> -			reg = <0x6 0x11010008 0x4>;
> +		gcb_ctrl: syscon@611010000 {
> +			compatible = "microchip,sparx5-gcb-syscon", "syscon";
> +			reg = <0x6 0x11010000 0x10000>;
> +		};
> +
> +		reset: reset-controller@0 {
> +			compatible = "microchip,sparx5-switch-reset";
> +			reg = <0x6 0x0 0x0>;

Your register length is 0?

> +			#reset-cells = <1>;
> +			cpu-syscon = <&cpu_ctrl>;

Can't you accomplish the same thing adding these to 
"microchip,sparx5-chip-reset"? Or possibly as a child node.

Define nodes based on h/w blocks, not as containers of things you happen 
to want for some driver.

> +			gcb-syscon = <&gcb_ctrl>;
>  		};
>  
>  		uart0: serial@600100000 {
> -- 
> 2.29.2
> 

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  reply	other threads:[~2021-02-06  4:38 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-20  8:19 [PATCH v4 0/3] Adding the Sparx5 Switch Reset Driver Steen Hegelund
2021-01-20  8:19 ` Steen Hegelund
2021-01-20  8:19 ` [PATCH v4 1/3] dt-bindings: reset: microchip sparx5 reset driver bindings Steen Hegelund
2021-01-20  8:19   ` Steen Hegelund
2021-01-20  8:19 ` [PATCH v4 2/3] reset: mchp: sparx5: add switch reset driver Steen Hegelund
2021-01-20  8:19   ` Steen Hegelund
2021-01-20  8:19 ` [PATCH v4 3/3] arm64: dts: reset: add microchip sparx5 " Steen Hegelund
2021-01-20  8:19   ` Steen Hegelund
2021-02-05 22:35   ` Rob Herring [this message]
2021-02-05 22:35     ` Rob Herring
2021-02-08  7:58     ` Steen Hegelund
2021-02-08  7:58       ` Steen Hegelund
2021-02-08 13:20     ` Steen Hegelund
2021-02-08 13:20       ` Steen Hegelund
2021-02-08 17:00       ` Rob Herring
2021-02-08 17:00         ` Rob Herring
2021-02-03  8:02 ` [PATCH v4 0/3] Adding the Sparx5 Switch Reset Driver Steen Hegelund
2021-02-03  8:02   ` Steen Hegelund

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