linux-kernel - [PATCH v5 4/7] riscv: dts: renesas: Add initial devicetree for Renesas RZ/Five SoC

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Message-Id: <20221028165921.94487-5-prabhakar.mahadev-lad.rj@bp.renesas.com>
Date:   Fri, 28 Oct 2022 17:59:18 +0100
From:   Prabhakar <prabhakar.csengg@...il.com>
To:     Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Magnus Damm <magnus.damm@...il.com>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Heiko Stuebner <heiko@...ech.de>,
        Conor Dooley <conor.dooley@...rochip.com>,
        Guo Ren <guoren@...nel.org>, Anup Patel <anup@...infault.org>,
        Atish Patra <atishp@...osinc.com>,
        Heinrich Schuchardt <heinrich.schuchardt@...onical.com>,
        devicetree@...r.kernel.org, linux-riscv@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-renesas-soc@...r.kernel.org,
        Prabhakar <prabhakar.csengg@...il.com>,
        Biju Das <biju.das.jz@...renesas.com>,
        Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: [PATCH v5 4/7] riscv: dts: renesas: Add initial devicetree for Renesas RZ/Five SoC

From: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>

Add initial device tree for Renesas RZ/Five RISC-V CPU Core (AX45MP
Single).

RZ/Five SoC is almost identical to RZ/G2UL Type-1 SoC (ARM64) hence we
will be reusing r9a07g043.dtsi [0] as a base DTSI for both the SoC's.
r9a07g043f.dtsi includes RZ/Five SoC specific blocks.

Below are the RZ/Five SoC specific blocks added in the initial DTSI which
can be used to boot via initramfs on RZ/Five SMARC EVK:
- AX45MP CPU
- PLIC

[0] arch/arm64/boot/dts/renesas/r9a07g043.dtsi

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
---
v4 -> v5
* Fixed riscv,ndev value (should be 511)
* Reworked completely (sort of new patch)

v3 -> v4
* No change

v2 -> v3
* Fixed clock entry for CPU core
* Fixed timebase frequency to 12MHz
* Fixed sorting of the nodes
* Included RB tags

v1 -> v2
* Dropped including makefile change
* Updated ndev count
---
 arch/riscv/boot/dts/renesas/r9a07g043f.dtsi | 57 +++++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100644 arch/riscv/boot/dts/renesas/r9a07g043f.dtsi

diff --git a/arch/riscv/boot/dts/renesas/r9a07g043f.dtsi b/arch/riscv/boot/dts/renesas/r9a07g043f.dtsi
new file mode 100644
index 000000000000..50134be548f5
--- /dev/null
+++ b/arch/riscv/boot/dts/renesas/r9a07g043f.dtsi
@@ -0,0 +1,57 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/*
+ * Device Tree Source for the RZ/Five SoC
+ *
+ * Copyright (C) 2022 Renesas Electronics Corp.
+ */
+
+#include <dt-bindings/interrupt-controller/irq.h>
+
+#define SOC_PERIPHERAL_IRQ(nr)	(nr + 32)
+
+#include <arm64/renesas/r9a07g043.dtsi>
+
+/ {
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		timebase-frequency = <12000000>;
+
+		cpu0: cpu@0 {
+			compatible = "andestech,ax45mp", "riscv";
+			device_type = "cpu";
+			reg = <0x0>;
+			status = "okay";
+			riscv,isa = "rv64imafdc";
+			mmu-type = "riscv,sv39";
+			i-cache-size = <0x8000>;
+			i-cache-line-size = <0x40>;
+			d-cache-size = <0x8000>;
+			d-cache-line-size = <0x40>;
+			clocks = <&cpg CPG_CORE R9A07G043_CLK_I>;
+
+			cpu0_intc: interrupt-controller {
+				#interrupt-cells = <1>;
+				compatible = "riscv,cpu-intc";
+				interrupt-controller;
+			};
+		};
+	};
+};
+
+&soc {
+	interrupt-parent = <&plic>;
+
+	plic: interrupt-controller@...00000 {
+		compatible = "renesas,r9a07g043-plic", "andestech,nceplic100";
+		#interrupt-cells = <2>;
+		#address-cells = <0>;
+		riscv,ndev = <511>;
+		interrupt-controller;
+		reg = <0x0 0x12c00000 0 0x400000>;
+		clocks = <&cpg CPG_MOD R9A07G043_NCEPLIC_ACLK>;
+		power-domains = <&cpg>;
+		resets = <&cpg R9A07G043_NCEPLIC_ARESETN>;
+		interrupts-extended = <&cpu0_intc 11 &cpu0_intc 9>;
+	};
+};
-- 
2.25.1