linux-kernel - Re: [PATCH v11 2/6] arm64: dts: xilinx: zynqmp: Add RPU subsystem device node

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Date:   Fri, 25 Nov 2022 10:22:47 +0100
From:   Michal Simek <michal.simek@....com>
To:     Tanmay Shah <tanmay.shah@....com>, <andersson@...nel.org>,
        <mathieu.poirier@...aro.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>
CC:     <bill.mills@...aro.org>, <linux-remoteproc@...r.kernel.org>,
        <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v11 2/6] arm64: dts: xilinx: zynqmp: Add RPU subsystem
 device node



On 11/15/22 00:39, Tanmay Shah wrote:
> RPU subsystem can be configured in cluster-mode or split mode.
> Also each r5 core has separate power domains.
> 
> Signed-off-by: Tanmay Shah <tanmay.shah@....com>
> ---
> 
> Changes in v11:
>    - None
> 
> Changes in v10:
>    - Rename node name to remoteproc
> 
> Changes in v9:
>    - remove unused labels
> 
> Changes in v8:
>    - None
> 
> Changes in v7:
>    - None
> 
> Changes in v6:
>    - None
> 
> Changes in v5:
>    - Remove optional reg property from r5fss node
>    - Move r5fss node out of axi node
> 
> Changes in v4:
>    - Add reserved memory region node and use it in RPU subsystem node
> 
> Changes in v3:
>    - Fix checkpatch.pl style warning
> 
>   arch/arm64/boot/dts/xilinx/zynqmp.dtsi | 33 ++++++++++++++++++++++++++
>   1 file changed, 33 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/xilinx/zynqmp.dtsi b/arch/arm64/boot/dts/xilinx/zynqmp.dtsi
> index a549265e55f6..c0f60833c0ae 100644
> --- a/arch/arm64/boot/dts/xilinx/zynqmp.dtsi
> +++ b/arch/arm64/boot/dts/xilinx/zynqmp.dtsi
> @@ -100,6 +100,22 @@ opp03 {
>   		};
>   	};
>   
> +	reserved-memory {
> +		#address-cells = <2>;
> +		#size-cells = <2>;
> +		ranges;
> +
> +		rproc_0_fw_image: memory@...00000 {
> +			no-map;
> +			reg = <0x0 0x3ed00000 0x0 0x40000>;
> +		};
> +
> +		rproc_1_fw_image: memory@...00000 {
> +			no-map;
> +			reg = <0x0 0x3ef00000 0x0 0x40000>;
> +		};
> +	};
> +
>   	zynqmp_ipi: zynqmp_ipi {
>   		compatible = "xlnx,zynqmp-ipi-mailbox";
>   		interrupt-parent = <&gic>;
> @@ -203,6 +219,23 @@ fpga_full: fpga-full {
>   		ranges;
>   	};
>   
> +	remoteproc {
> +		compatible = "xlnx,zynqmp-r5fss";
> +		xlnx,cluster-mode = <1>;
> +
> +		r5f-0 {
> +			compatible = "xlnx,zynqmp-r5f";
> +			power-domains = <&zynqmp_firmware PD_RPU_0>;
> +			memory-region = <&rproc_0_fw_image>;
> +		};
> +
> +		r5f-1 {
> +			compatible = "xlnx,zynqmp-r5f";
> +			power-domains = <&zynqmp_firmware PD_RPU_1>;
> +			memory-region = <&rproc_1_fw_image>;
> +		};
> +	};
> +
>   	amba: axi {
>   		compatible = "simple-bus";
>   		#address-cells = <2>;

Matthieu: If you want to take this via your tree here is mine.

Acked-by: Michal Simek <michal.simek@....com>

In another case I will queue it for next release when dt binding is applied.

Thanks,
Michal