linux-kernel - [PATCH v4 08/10] riscv: dts: renesas: Add minimal DTS for Renesas RZ/Five SMARC EVK

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Date:   Tue, 20 Sep 2022 19:49:02 +0100
From:   Prabhakar <prabhakar.csengg@...il.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>,
        Magnus Damm <magnus.damm@...il.com>,
        Conor Dooley <conor.dooley@...rochip.com>
Cc:     Heiko Stuebner <heiko@...ech.de>,
        Heinrich Schuchardt <heinrich.schuchardt@...onical.com>,
        Atish Patra <atishp@...osinc.com>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.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 v4 08/10] riscv: dts: renesas: Add minimal DTS for Renesas RZ/Five SMARC EVK

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

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

Below are the which are enabled:
- CPG
- CPU0
- DDR (memory regions)
- PINCTRL
- PLIC
- SCIF0

As we are reusing the RZ/G2UL SMARC SoM [0] and carrier [1] board DTSIs
which enables almost all the blocks supported by the RZ/G2UL SoC and
whereas on RZ/Five SoC we will be gradually adding the blocks hence the
aliases for ETH and I2C are deleted as support for these blocks is not
yet enabled on RZ/Five SoC.

[0] arch/arm64/boot/dts/renesas/rzg2ul-smarc-som.dtsi
[1] arch/arm64/boot/dts/renesas/rzg2ul-smarc.dtsi

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
---
v3 -> v4
* Dropped deleting place holder nodes
* Updated SW1 settings comment
* Update commit message

v2 -> v3
* Dropped RB tags from Conor and Geert
* Now re-using the SoM and carrier board DTS/I from RZ/G2UL

v1 -> v2
* New patch
---
 arch/riscv/boot/dts/Makefile                  |  1 +
 arch/riscv/boot/dts/renesas/Makefile          |  2 ++
 .../boot/dts/renesas/r9a07g043f01-smarc.dts   | 27 +++++++++++++++++++
 .../boot/dts/renesas/rzfive-smarc-som.dtsi    | 19 +++++++++++++
 arch/riscv/boot/dts/renesas/rzfive-smarc.dtsi | 15 +++++++++++
 5 files changed, 64 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..487d0d5e6d2e
--- /dev/null
+++ b/arch/riscv/boot/dts/renesas/r9a07g043f01-smarc.dts
@@ -0,0 +1,27 @@
+// 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/;
+
+/*
+ * DIP-Switch SW1 setting
+ * 1 : High; 0: Low
+ * SW1-2 : SW_SD0_DEV_SEL	(0: uSD; 1: eMMC)
+ * SW1-3 : SW_ET0_EN_N		(0: ETHER0; 1: CAN0, CAN1, SSI1, RSPI1)
+ * Please change below macros according to SW1 setting on the SoM
+ */
+#define SW_SW0_DEV_SEL	1
+#define SW_ET0_EN_N	1
+
+#include "r9a07g043.dtsi"
+#include "rzfive-smarc-som.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..d8168eb920ab
--- /dev/null
+++ b/arch/riscv/boot/dts/renesas/rzfive-smarc-som.dtsi
@@ -0,0 +1,19 @@
+// 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.
+ */
+
+#include <arm64/renesas/rzg2ul-smarc-som.dtsi>
+
+/ {
+	aliases {
+		/delete-property/ ethernet0;
+		/delete-property/ ethernet1;
+	};
+
+	chosen {
+		bootargs = "ignore_loglevel";
+	};
+};
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..6f44a6946897
--- /dev/null
+++ b/arch/riscv/boot/dts/renesas/rzfive-smarc.dtsi
@@ -0,0 +1,15 @@
+// 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 <arm64/renesas/rzg2ul-smarc.dtsi>
+
+/ {
+	aliases {
+		/delete-property/ i2c0;
+		/delete-property/ i2c1;
+	};
+};
-- 
2.25.1