linux-kernel - Re: [PATCH 6/6] arm64: dts: imx8qxp-mek: add cm4 and related nodes

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Message-ID: <ZxXFICl573EOMWQX@dragon>
Date: Mon, 21 Oct 2024 11:06:08 +0800
From: Shawn Guo <shawnguo2@...h.net>
To: Frank Li <Frank.Li@....com>
Cc: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>,
	"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" <devicetree@...r.kernel.org>,
	"open list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" <imx@...ts.linux.dev>,
	"moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" <linux-arm-kernel@...ts.infradead.org>,
	open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 6/6] arm64: dts: imx8qxp-mek: add cm4 and related nodes

On Mon, Sep 30, 2024 at 05:26:03PM -0400, Frank Li wrote:
> Add cm4 and related nodes.
> 
> Signed-off-by: Frank Li <Frank.Li@....com>
> ---
>  arch/arm64/boot/dts/freescale/imx8qxp-mek.dts | 61 +++++++++++++++++++
>  1 file changed, 61 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/freescale/imx8qxp-mek.dts b/arch/arm64/boot/dts/freescale/imx8qxp-mek.dts
> index bbb94adfd64f0..83e8393a34a0c 100644
> --- a/arch/arm64/boot/dts/freescale/imx8qxp-mek.dts
> +++ b/arch/arm64/boot/dts/freescale/imx8qxp-mek.dts
> @@ -21,6 +21,21 @@ chosen {
>  		stdout-path = &lpuart0;
>  	};
>  
> +	imx8x_cm4: imx8x_cm4 {

Hyphen instead of underscore in node name.

> +		compatible = "fsl,imx8qxp-cm4";
> +		mbox-names = "tx", "rx", "rxdb";
> +		mboxes = <&lsio_mu5 0 1
> +			  &lsio_mu5 1 1
> +			  &lsio_mu5 3 1>;
> +		memory-region = <&vdevbuffer>, <&vdev0vring0>, <&vdev0vring1>,
> +				<&vdev1vring0>, <&vdev1vring1>, <&rsc_table>;
> +		power-domains = <&pd IMX_SC_R_M4_0_PID0>,
> +				<&pd IMX_SC_R_M4_0_MU_1A>;
> +		fsl,entry-address = <0x34fe0000>;
> +		fsl,resource-id = <IMX_SC_R_M4_0_PID0>;
> +		status = "okay";
> +	};
> +
>  	memory@...00000 {
>  		device_type = "memory";
>  		reg = <0x00000000 0x80000000 0 0x40000000>;
> @@ -85,6 +100,48 @@ reg_usb_otg1_vbus: regulator-usbotg1-vbus {
>  		enable-active-high;
>  	};
>  
> +	reserved-memory {
> +		#address-cells = <2>;
> +		#size-cells = <2>;
> +		ranges;
> +
> +		vdev0vring0: memory@...00000 {
> +			reg = <0 0x90000000 0 0x8000>;
> +			no-map;
> +		};
> +
> +		vdev0vring1: memory@...08000 {
> +			reg = <0 0x90008000 0 0x8000>;
> +			no-map;
> +		};
> +
> +		vdev1vring0: memory@...10000 {
> +			reg = <0 0x90010000 0 0x8000>;
> +			no-map;
> +		};
> +
> +		vdev1vring1: memory@...18000 {
> +			reg = <0 0x90018000 0 0x8000>;
> +			no-map;
> +		};
> +
> +		rsc_table: memory@...ff000 {
> +			reg = <0 0x900ff000 0 0x1000>;
> +			no-map;
> +		};
> +
> +		vdevbuffer: memory@...00000 {
> +                        compatible = "shared-dma-pool";

Use tabs instead of spaces for indent.

> +			reg = <0 0x90400000 0 0x100000>;
> +			no-map;
> +		};
> +
> +		gpu_reserved: gpu_reserved@...000000 {

"memory" for node name?

Shawn

> +			no-map;
> +			reg = <0x8 0x80000000 0 0x10000000>;
> +		};
> +	};
> +
>  	sound-bt-sco {
>  		compatible = "simple-audio-card";
>  		simple-audio-card,bitclock-inversion;
> @@ -407,6 +464,10 @@ &lpuart3 {
>  	status = "okay";
>  };
>  
> +&lsio_mu5 {
> +	status = "okay";
> +};
> +
>  &mu_m0 {
>  	status = "okay";
>  };
> -- 
> 2.34.1
>