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Message-ID: <ZeKHlEyvtpx3pdSA@linux-8mug>
Date: Sat, 2 Mar 2024 09:57:40 +0800
From: Chester Lin <chester62515@...il.com>
To: Matthias Brugger <mbrugger@...e.com>
Cc: Ghennadi Procopciuc <ghennadi.procopciuc@....nxp.com>,
	Andreas Farber <afaerber@...e.de>, Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>,
	Rob Herring <robh+dt@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...nel.org>, NXP S32 Linux Team <s32@....com>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	NXP Linux Team <linux-imx@....com>,
	linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org,
	Ghennadi Procopciuc <ghennadi.procopciuc@....com>,
	Catalin Udma <catalin-dan.udma@....com>
Subject: Re: [PATCH v2 1/2] arm64: dts: s32g: add SCMI firmware node

On Mon, Jan 22, 2024 at 03:39:09PM +0100, Matthias Brugger wrote:
> 
> 
> On 22/01/2024 15:06, Ghennadi Procopciuc wrote:
> > From: Ghennadi Procopciuc <ghennadi.procopciuc@....com>
> > 
> > Linux controls the clocks over SCMI on S32G SoCs. Therefore,
> > add the SCMI device tree node and the reserved region for SCMI
> > messages.
> > 
> > Signed-off-by: Catalin Udma <catalin-dan.udma@....com>
> > Signed-off-by: Ghennadi Procopciuc <ghennadi.procopciuc@....com>
> 
> Reviewed-by: Matthias Brugger <mbrugger@...e.com>
> 
> > ---
> >   arch/arm64/boot/dts/freescale/s32g2.dtsi | 27 +++++++++++++++++++++++-
> >   1 file changed, 26 insertions(+), 1 deletion(-)
> > 
> > diff --git a/arch/arm64/boot/dts/freescale/s32g2.dtsi b/arch/arm64/boot/dts/freescale/s32g2.dtsi
> > index 5ac1cc9ff50e..ef1a1d61f2ba 100644
> > --- a/arch/arm64/boot/dts/freescale/s32g2.dtsi
> > +++ b/arch/arm64/boot/dts/freescale/s32g2.dtsi
> > @@ -3,7 +3,7 @@
> >    * NXP S32G2 SoC family
> >    *
> >    * Copyright (c) 2021 SUSE LLC
> > - * Copyright (c) 2017-2021 NXP
> > + * Copyright 2017-2021, 2024 NXP
> >    */
> >   #include <dt-bindings/interrupt-controller/arm-gic.h>
> > @@ -14,6 +14,18 @@ / {
> >   	#address-cells = <2>;
> >   	#size-cells = <2>;
> > +	reserved-memory  {
> > +		#address-cells = <2>;
> > +		#size-cells = <2>;
> > +		ranges;
> > +
> > +		scmi_buf: shm@...00000 {
> > +			compatible = "arm,scmi-shmem";
> > +			reg = <0x0 0xd0000000 0x0 0x80>;
> > +			no-map;
> > +		};
> > +	};
> > +
> >   	cpus {
> >   		#address-cells = <1>;
> >   		#size-cells = <0>;
> > @@ -77,6 +89,19 @@ timer {
> >   	};
> >   	firmware {
> > +		scmi {
> > +			compatible = "arm,scmi-smc";
> > +			arm,smc-id = <0xc20000fe>;
> > +			#address-cells = <1>;
> > +			#size-cells = <0>;
> > +			shmem = <&scmi_buf>;
> > +
> > +			clks: protocol@14 {
> > +				reg = <0x14>;
> > +				#clock-cells = <1>;
> > +			};
> > +		};
> > +
> >   		psci {
> >   			compatible = "arm,psci-1.0";
> >   			method = "smc";

Reviewed-by: Chester Lin <chester62515@...il.com>

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