linux-kernel - [PATCH v2 6/8] riscv: dts: renesas: Add minimal DTS for Renesas RZ/Five SMARC EVK

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Date:   Mon, 15 Aug 2022 16:14:49 +0100
From:   Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
To:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Geert Uytterhoeven <geert+renesas@...der.be>
Cc:     Conor Dooley <Conor.Dooley@...rochip.com>,
        Anup Patel <anup@...infault.org>,
        linux-renesas-soc@...r.kernel.org, devicetree@...r.kernel.org,
        linux-riscv@...ts.infradead.org, linux-kernel@...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 v2 6/8] riscv: dts: renesas: Add minimal DTS for Renesas RZ/Five SMARC EVK

Enable the minimal blocks required for booting the Renesas RZ/Five
SMARC EVK with initramfs.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
---
v1->v2
* New patch
---
 arch/riscv/boot/dts/Makefile                  |  1 +
 arch/riscv/boot/dts/renesas/Makefile          |  2 ++
 .../boot/dts/renesas/r9a07g043f01-smarc.dts   | 16 ++++++++++
 .../boot/dts/renesas/rzfive-smarc-som.dtsi    | 22 +++++++++++++
 arch/riscv/boot/dts/renesas/rzfive-smarc.dtsi | 32 +++++++++++++++++++
 5 files changed, 73 insertions(+)
 create mode 100644 arch/riscv/boot/dts/renesas/Makefile
 create mode 100644 arch/riscv/boot/dts/renesas/r9a07g043f01-smarc.dts
 create mode 100644 arch/riscv/boot/dts/renesas/rzfive-smarc-som.dtsi
 create mode 100644 arch/riscv/boot/dts/renesas/rzfive-smarc.dtsi

diff --git a/arch/riscv/boot/dts/Makefile b/arch/riscv/boot/dts/Makefile
index ff174996cdfd..b0ff5fbabb0c 100644
--- a/arch/riscv/boot/dts/Makefile
+++ b/arch/riscv/boot/dts/Makefile
@@ -3,5 +3,6 @@ subdir-y += sifive
 subdir-y += starfive
 subdir-$(CONFIG_SOC_CANAAN_K210_DTB_BUILTIN) += canaan
 subdir-y += microchip
+subdir-y += renesas
 
 obj-$(CONFIG_BUILTIN_DTB) := $(addsuffix /, $(subdir-y))
diff --git a/arch/riscv/boot/dts/renesas/Makefile b/arch/riscv/boot/dts/renesas/Makefile
new file mode 100644
index 000000000000..2d3f5751a649
--- /dev/null
+++ b/arch/riscv/boot/dts/renesas/Makefile
@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0
+dtb-$(CONFIG_ARCH_R9A07G043) += r9a07g043f01-smarc.dtb
diff --git a/arch/riscv/boot/dts/renesas/r9a07g043f01-smarc.dts b/arch/riscv/boot/dts/renesas/r9a07g043f01-smarc.dts
new file mode 100644
index 000000000000..7428f643a9b3
--- /dev/null
+++ b/arch/riscv/boot/dts/renesas/r9a07g043f01-smarc.dts
@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/*
+ * Device Tree Source for the RZ/Five SMARC EVK
+ *
+ * Copyright (C) 2022 Renesas Electronics Corp.
+ */
+
+/dts-v1/;
+
+#include "r9a07g043.dtsi"
+#include "rzfive-smarc.dtsi"
+
+/ {
+	model = "Renesas SMARC EVK based on r9a07g043f01";
+	compatible = "renesas,smarc-evk", "renesas,r9a07g043f01", "renesas,r9a07g043";
+};
diff --git a/arch/riscv/boot/dts/renesas/rzfive-smarc-som.dtsi b/arch/riscv/boot/dts/renesas/rzfive-smarc-som.dtsi
new file mode 100644
index 000000000000..4a4acde6a2a7
--- /dev/null
+++ b/arch/riscv/boot/dts/renesas/rzfive-smarc-som.dtsi
@@ -0,0 +1,22 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/*
+ * Device Tree Source for the RZ/Five SMARC EVK SOM
+ *
+ * Copyright (C) 2022 Renesas Electronics Corp.
+ */
+
+/ {
+	chosen {
+		bootargs = "ignore_loglevel";
+	};
+
+	memory@...00000 {
+		device_type = "memory";
+		/* first 128MB is reserved for secure area. */
+		reg = <0x0 0x48000000 0x0 0x38000000>;
+	};
+};
+
+&extal_clk {
+	clock-frequency = <24000000>;
+};
diff --git a/arch/riscv/boot/dts/renesas/rzfive-smarc.dtsi b/arch/riscv/boot/dts/renesas/rzfive-smarc.dtsi
new file mode 100644
index 000000000000..4864a2a62d6b
--- /dev/null
+++ b/arch/riscv/boot/dts/renesas/rzfive-smarc.dtsi
@@ -0,0 +1,32 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/*
+ * Device Tree Source for the RZ/Five SMARC EVK carrier board
+ *
+ * Copyright (C) 2022 Renesas Electronics Corp.
+ */
+
+#include <dt-bindings/pinctrl/rzg2l-pinctrl.h>
+#include "rzfive-smarc-som.dtsi"
+
+/ {
+	aliases {
+		serial0 = &scif0;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+};
+
+&pinctrl {
+	scif0_pins: scif0 {
+		pinmux = <RZG2L_PORT_PINMUX(6, 4, 6)>, /* TxD */
+			 <RZG2L_PORT_PINMUX(6, 3, 6)>; /* RxD */
+	};
+};
+
+&scif0 {
+	pinctrl-0 = <&scif0_pins>;
+	pinctrl-names = "default";
+	status = "okay";
+};
-- 
2.25.1