linux-kernel - [PATCH v6 2/6] arm64: dts: xilinx: zynqmp: Add RPU subsystem device node

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Message-ID: <20220531234308.3317795-3-tanmay.shah@xilinx.com>
Date:   Tue, 31 May 2022 16:43:06 -0700
From:   Tanmay Shah <tanmay.shah@...inx.com>
To:     <openamp-system-reference@...ts.openampproject.org>,
        <bjorn.andersson@...aro.org>, <mathieu.poirier@...aro.org>,
        <robh+dt@...nel.org>, <krzk+dt@...nel.org>,
        <michal.simek@...inx.com>, <ben.levinsky@...inx.com>,
        <tanmay.shah@...inx.com>
CC:     <linux-remoteproc@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: [PATCH v6 2/6] arm64: dts: xilinx: zynqmp: Add RPU subsystem device node

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@...inx.com>
---

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 c715a18368c2..e8315a4f7f61 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;
 	};
 
+	r5fss: r5fss {
+		compatible = "xlnx,zynqmp-r5fss";
+		xlnx,cluster-mode = <1>;
+
+		r5f_core0: r5f-0 {
+			compatible = "xlnx,zynqmp-r5f";
+			power-domains = <&zynqmp_firmware PD_RPU_0>;
+			memory-region = <&rproc_0_fw_image>;
+		};
+
+		r5f_core1: 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>;
-- 
2.25.1