[PATCH 3/3] riscv: dts: spacemit: Add Milk-V Jupiter board (M1)

From: Aurelien Jarno <aurelien@aurel32.net>
To: linux-kernel@vger.kernel.org, Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>, Yixun Lan <dlan@kernel.org>,
	Paul Walmsley <pjw@kernel.org>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Albert Ou <aou@eecs.berkeley.edu>,
	Alexandre Ghiti <alex@ghiti.fr>
Cc: Aurelien Jarno <aurelien@aurel32.net>,
	devicetree@vger.kernel.org (open list:OPEN FIRMWARE AND
	FLATTENED DEVICE TREE BINDINGS),
	linux-riscv@lists.infradead.org (open list:RISC-V ARCHITECTURE),
	spacemit@lists.linux.dev (open list:RISC-V SPACEMIT SoC Support)
Subject: [PATCH 3/3] riscv: dts: spacemit: Add Milk-V Jupiter board (M1)
Date: Tue, 28 Jul 2026 23:05:08 +0200	[thread overview]
Message-ID: <20260728211020.1248676-4-aurelien@aurel32.net> (raw)
In-Reply-To: <20260728211020.1248676-1-aurelien@aurel32.net>

Add support for the Milk-V Jupiter board with the M1 CPU. The M1 differs
from the K1 only by its package, which provides improved cooling
performance and allows it to run at up to 1.8 GHz instead of 1.6 GHz.

Add m1-opp.dtsi to define the 1.8 GHz operating point and the
corresponding core voltage, based on the upstream kernel. Include it
from m1-milkv-jupiter.dts.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
---
 arch/riscv/boot/dts/spacemit/Makefile         |   1 +
 .../boot/dts/spacemit/m1-milkv-jupiter.dts    |  11 ++
 arch/riscv/boot/dts/spacemit/m1-opp.dtsi      | 117 ++++++++++++++++++
 3 files changed, 129 insertions(+)
 create mode 100644 arch/riscv/boot/dts/spacemit/m1-milkv-jupiter.dts
 create mode 100644 arch/riscv/boot/dts/spacemit/m1-opp.dtsi

diff --git a/arch/riscv/boot/dts/spacemit/Makefile b/arch/riscv/boot/dts/spacemit/Makefile
index 851b701e5da48..c5c38c17b6ced 100644
--- a/arch/riscv/boot/dts/spacemit/Makefile
+++ b/arch/riscv/boot/dts/spacemit/Makefile
@@ -8,3 +8,4 @@ dtb-$(CONFIG_ARCH_SPACEMIT) += k1-orangepi-rv2.dtb
 dtb-$(CONFIG_ARCH_SPACEMIT) += k3-com260-ifx.dtb
 dtb-$(CONFIG_ARCH_SPACEMIT) += k3-deepcomputing-fml13v05.dtb
 dtb-$(CONFIG_ARCH_SPACEMIT) += k3-pico-itx.dtb
+dtb-$(CONFIG_ARCH_SPACEMIT) += m1-milkv-jupiter.dtb
diff --git a/arch/riscv/boot/dts/spacemit/m1-milkv-jupiter.dts b/arch/riscv/boot/dts/spacemit/m1-milkv-jupiter.dts
new file mode 100644
index 0000000000000..32e1468385ca0
--- /dev/null
+++ b/arch/riscv/boot/dts/spacemit/m1-milkv-jupiter.dts
@@ -0,0 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0 OR MIT
+/*
+ * Copyright (C) 2026 Aurelien Jarno <aurelien@aurel32.net>
+ */
+
+#include "k1-milkv-jupiter-common.dtsi"
+#include "m1-opp.dtsi"
+
+/ {
+	model = "Milk-V Jupiter (M1)";
+};
diff --git a/arch/riscv/boot/dts/spacemit/m1-opp.dtsi b/arch/riscv/boot/dts/spacemit/m1-opp.dtsi
new file mode 100644
index 0000000000000..38e0ce7765a2b
--- /dev/null
+++ b/arch/riscv/boot/dts/spacemit/m1-opp.dtsi
@@ -0,0 +1,117 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+
+/ {
+	cluster0_opp_table: opp-table-cluster0 {
+		compatible = "operating-points-v2";
+		opp-shared;
+
+		opp-614400000 {
+			opp-hz = /bits/ 64 <614400000>;
+			opp-microvolt = <950000 950000 1160000>;
+			clock-latency-ns = <200000>;
+		};
+
+		opp-819000000 {
+			opp-hz = /bits/ 64 <819000000>;
+			opp-microvolt = <950000 950000 1160000>;
+			clock-latency-ns = <200000>;
+		};
+
+		opp-1000000000 {
+			opp-hz = /bits/ 64 <1000000000>;
+			opp-microvolt = <950000 950000 1160000>;
+			clock-latency-ns = <200000>;
+		};
+
+		opp-1228800000 {
+			opp-hz = /bits/ 64 <1228800000>;
+			opp-microvolt = <950000 950000 1160000>;
+			clock-latency-ns = <200000>;
+		};
+
+		opp-1600000000 {
+			opp-hz = /bits/ 64 <1600000000>;
+			opp-microvolt = <1050000 1050000 1160000>;
+			clock-latency-ns = <200000>;
+		};
+
+		opp-1800000000 {
+			opp-hz = /bits/ 64 <1800000000>;
+			opp-microvolt = <1160000 1160000 1160000>;
+			clock-latency-ns = <200000>;
+		};
+	};
+
+	cluster1_opp_table: opp-table-cluster1 {
+		compatible = "operating-points-v2";
+		opp-shared;
+
+		opp-614400000 {
+			opp-hz = /bits/ 64 <614400000>;
+			opp-microvolt = <950000 950000 1160000>;
+			clock-latency-ns = <200000>;
+		};
+
+		opp-819000000 {
+			opp-hz = /bits/ 64 <819000000>;
+			opp-microvolt = <950000 950000 1160000>;
+			clock-latency-ns = <200000>;
+		};
+
+		opp-1000000000 {
+			opp-hz = /bits/ 64 <1000000000>;
+			opp-microvolt = <950000 950000 1160000>;
+			clock-latency-ns = <200000>;
+		};
+
+		opp-1228800000 {
+			opp-hz = /bits/ 64 <1228800000>;
+			opp-microvolt = <950000 950000 1160000>;
+			clock-latency-ns = <200000>;
+		};
+
+		opp-1600000000 {
+			opp-hz = /bits/ 64 <1600000000>;
+			opp-microvolt = <1050000 1050000 1160000>;
+			clock-latency-ns = <200000>;
+		};
+
+		opp-1800000000 {
+			opp-hz = /bits/ 64 <1800000000>;
+			opp-microvolt = <1160000 1160000 1160000>;
+			clock-latency-ns = <200000>;
+		};
+	};
+};
+
+&cpu_0 {
+	operating-points-v2 = <&cluster0_opp_table>;
+};
+
+&cpu_1 {
+	operating-points-v2 = <&cluster0_opp_table>;
+};
+
+&cpu_2 {
+	operating-points-v2 = <&cluster0_opp_table>;
+};
+
+&cpu_3 {
+	operating-points-v2 = <&cluster0_opp_table>;
+};
+
+&cpu_4 {
+	operating-points-v2 = <&cluster1_opp_table>;
+};
+
+&cpu_5 {
+	operating-points-v2 = <&cluster1_opp_table>;
+};
+
+&cpu_6 {
+	operating-points-v2 = <&cluster1_opp_table>;
+};
+
+&cpu_7 {
+	operating-points-v2 = <&cluster1_opp_table>;
+};
-- 
2.53.0

