linux-kernel - RE: [PATCH 4/5] arm64: dts: imx8mp: Add fsl,dsp-ctrl property for dsp

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Message-ID:
 <DB9PR04MB84616B3F5A76AA1C588DC0ED88222@DB9PR04MB8461.eurprd04.prod.outlook.com>
Date: Thu, 21 Nov 2024 11:33:46 +0000
From: Peng Fan <peng.fan@....com>
To: Daniel Baluta <daniel.baluta@....com>, "shawnguo@...nel.org"
	<shawnguo@...nel.org>, "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
	"kernel@...gutronix.de" <kernel@...gutronix.de>
CC: "robh@...nel.org" <robh@...nel.org>, "krzk+dt@...nel.org"
	<krzk+dt@...nel.org>, "conor+dt@...nel.org" <conor+dt@...nel.org>,
	"festevam@...il.com" <festevam@...il.com>, "devicetree@...r.kernel.org"
	<devicetree@...r.kernel.org>, "imx@...ts.linux.dev" <imx@...ts.linux.dev>,
	"linux-arm-kernel@...ts.infradead.org"
	<linux-arm-kernel@...ts.infradead.org>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>, Frank Li <frank.li@....com>, Aisheng Dong
	<aisheng.dong@....com>, "daniel.baluta@...il.com" <daniel.baluta@...il.com>,
	Laurentiu Mihalcea <laurentiu.mihalcea@....com>, "S.J. Wang"
	<shengjiu.wang@....com>, Iuliana Prodan <iuliana.prodan@....com>, Daniel
 Baluta <daniel.baluta@....com>
Subject: RE: [PATCH 4/5] arm64: dts: imx8mp: Add fsl,dsp-ctrl property for dsp

> Subject: [PATCH 4/5] arm64: dts: imx8mp: Add fsl,dsp-ctrl property for
> dsp
> 
> Audio block control contains a set of registers some of them used for
> DSP configuration.
> 
> Drivers (rproc, SOF) are using fsl,dsp-ctrl property to access those
> registers in order to control the operations of the DSP (e.g for start,
> reset, etc).
> 
> Signed-off-by: Daniel Baluta <daniel.baluta@....com>
> ---
>  arch/arm64/boot/dts/freescale/imx8mp.dtsi | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> index 41ff40ab5da2..fa4ff75af12d 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> @@ -1616,7 +1616,7 @@ sdma2: dma-controller@...10000 {
>  			};
> 
>  			audio_blk_ctrl: clock-controller@...20000 {
> -				compatible = "fsl,imx8mp-audio-blk-
> ctrl";
> +				compatible = "fsl,imx8mp-audio-blk-
> ctrl", "syscon";

This requires binding update as I recall.

Regards,
Peng.

>  				reg = <0x30e20000 0x10000>;
>  				#clock-cells = <1>;
>  				#reset-cells = <1>;
> @@ -2433,6 +2433,7 @@ dsp: dsp@...e8000 {
>  			mboxes = <&mu2 0 0>, <&mu2 1 0>, <&mu2
> 3 0>;
>  			firmware-name = "imx/dsp/hifi4.bin";
>  			memory-region = <&dsp_reserved>;
> +			fsl,dsp-ctrl = <&audio_blk_ctrl>;
>  			status = "disabled";
>  		};
>  	};
> --
> 2.43.0
>