RISC-V SpacemiT DT changes for 6.15

- Add Milk-V Jupiter board
 - MAINTAINERS info
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Merge tag 'spacemit-dt-for-6.15-1' of https://github.com/spacemit-com/linux into soc/dt

RISC-V SpacemiT DT changes for 6.15

- Add Milk-V Jupiter board
- MAINTAINERS info

* tag 'spacemit-dt-for-6.15-1' of https://github.com/spacemit-com/linux:
  riscv: dts: spacemit: Add Milk-V Jupiter board device tree
  dt-bindings: riscv: spacemit: Add Milk-V Jupiter board compatible
  MAINTAINERS: spacemit: update various info

Link: https://lore.kernel.org/r/20250312003023-GYA76989@gentoo
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Documentation/devicetree/bindings/riscv/spacemit.yaml

@@ -21,6 +21,7 @@ properties:
       - items:
           - enum:
               - bananapi,bpi-f3
+              - milkv,jupiter
           - const: spacemit,k1
 
 additionalProperties: true

MAINTAINERS

@@ -20406,7 +20406,10 @@ F:	drivers/perf/riscv_pmu_sbi.c
 RISC-V SPACEMIT SoC Support
 M:	Yixun Lan <dlan@gentoo.org>
 L:	linux-riscv@lists.infradead.org
+L:	spacemit@lists.linux.dev
 S:	Maintained
+W:	https://github.com/spacemit-com/linux/wiki
+C:	irc://irc.libera.chat/spacemit
 T:	git https://github.com/spacemit-com/linux
 F:	arch/riscv/boot/dts/spacemit/
 N:	spacemit

arch/riscv/boot/dts/spacemit/Makefile

@@ -1,2 +1,3 @@
 # SPDX-License-Identifier: GPL-2.0
 dtb-$(CONFIG_ARCH_SPACEMIT) += k1-bananapi-f3.dtb
+dtb-$(CONFIG_ARCH_SPACEMIT) += k1-milkv-jupiter.dtb

arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts

@@ -0,0 +1,27 @@
+// SPDX-License-Identifier: GPL-2.0 OR MIT
+/*
+ * Copyright (C) 2024 Yangyu Chen <cyy@cyyself.name>
+ * Copyright (C) 2025 Javier Martinez Canillas <javierm@redhat.com>
+ */
+
+#include "k1.dtsi"
+#include "k1-pinctrl.dtsi"
+
+/ {
+	model = "Milk-V Jupiter (K1)";
+	compatible = "milkv,jupiter", "spacemit,k1";
+
+	aliases {
+		serial0 = &uart0;
+	};
+
+	chosen {
+		stdout-path = "serial0";
+	};
+};
+
+&uart0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart0_2_cfg>;
+	status = "okay";
+};