netdev - Re: [PATCH net-next v2 15/15] arm64: dts: allwinner: a64: add SRAM controller device tree node

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Message-ID: <20180502095118.rqnfwy576xh6ercm@flea>
Date:   Wed, 2 May 2018 11:51:18 +0200
From:   Maxime Ripard <maxime.ripard@...tlin.com>
To:     Chen-Yu Tsai <wens@...e.org>
Cc:     Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Mark Brown <broonie@...nel.org>,
        Icenowy Zheng <icenowy@...c.io>,
        linux-arm-kernel@...ts.infradead.org, linux-clk@...r.kernel.org,
        devicetree@...r.kernel.org, netdev@...r.kernel.org,
        Corentin Labbe <clabbe.montjoie@...il.com>
Subject: Re: [PATCH net-next v2 15/15] arm64: dts: allwinner: a64: add SRAM
 controller device tree node

Hi,

On Wed, May 02, 2018 at 12:12:27AM +0800, Chen-Yu Tsai wrote:
> From: Icenowy Zheng <icenowy@...c.io>
> 
> Allwinner A64 has a SRAM controller, and in the device tree currently
> we have a syscon node to enable EMAC driver to access the EMAC clock
> register. As SRAM controller driver can now export regmap for this
> register, replace the syscon node to the SRAM controller device node,
> and let EMAC driver to acquire its EMAC clock regmap.
> 
> Signed-off-by: Icenowy Zheng <icenowy@...c.io>
> Signed-off-by: Chen-Yu Tsai <wens@...e.org>
> ---
>  arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi | 23 +++++++++++++++----
>  1 file changed, 19 insertions(+), 4 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
> index 1b2ef28c42bd..1c37659d9d41 100644
> --- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
> +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
> @@ -168,10 +168,25 @@
>  		#size-cells = <1>;
>  		ranges;
>  
> -		syscon: syscon@...0000 {
> -			compatible = "allwinner,sun50i-a64-system-controller",
> -				"syscon";
> +		sram_controller: sram-controller@...0000 {
> +			compatible = "allwinner,sun50i-a64-sram-controller";

I don't think there's anything preventing us from keeping the
-system-controller compatible. It's what was in the DT before, and
it's how it's called in the datasheet.

Otherwise, the whole serie looks good to me:
Acked-by: Maxime Ripard <maxime.ripard@...tlin.com>

Maxime

-- 
Maxime Ripard, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com

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