[PATCH] loongarch: boot: dts: Add Loongson-2K0300 support

[PATCH] loongarch: boot: dts: Add Loongson-2K0300 support

[wjjsn]

Signed-off-by: wjjsn <wjjsn@qq.com>
---
 arch/loongarch/boot/dts/Makefile              |  2 +-
 .../boot/dts/loongson-2k0300-ref.dts          | 34 +++++++
 arch/loongarch/boot/dts/loongson-2k0300.dtsi  | 95 +++++++++++++++++++
 3 files changed, 130 insertions(+), 1 deletion(-)
 create mode 100644 arch/loongarch/boot/dts/loongson-2k0300-ref.dts
 create mode 100644 arch/loongarch/boot/dts/loongson-2k0300.dtsi

diff --git a/arch/loongarch/boot/dts/Makefile b/arch/loongarch/boot/dts/Makefile
index 15d5e14fe418..4a096608cfad 100644
--- a/arch/loongarch/boot/dts/Makefile
+++ b/arch/loongarch/boot/dts/Makefile
@@ -1,3 +1,3 @@
 # SPDX-License-Identifier: GPL-2.0-only
 
-dtb-y = loongson-2k0500-ref.dtb loongson-2k1000-ref.dtb loongson-2k2000-ref.dtb
+dtb-y = loongson-2k0300-ref.dtb loongson-2k0500-ref.dtb loongson-2k1000-ref.dtb loongson-2k2000-ref.dtb
diff --git a/arch/loongarch/boot/dts/loongson-2k0300-ref.dts b/arch/loongarch/boot/dts/loongson-2k0300-ref.dts
new file mode 100644
index 000000000000..f85d2caa94b0
--- /dev/null
+++ b/arch/loongarch/boot/dts/loongson-2k0300-ref.dts
@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2023 Loongson Technology Corporation Limited
+ */
+
+/dts-v1/;
+
+#include "loongson-2k0300.dtsi"
+
+/ {
+	compatible = "loongson,ls2k0300-ref", "loongson,ls2k0300";
+	model = "Loongson-2K0300 Reference Board";
+
+	aliases {
+		serial0 = &uart0;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	memory@200000 {
+		device_type = "memory";
+		reg = <0x0 0x00200000 0x0 0x0ee00000>,
+			  <0x0 0x90000000 0x0 0x10000000>;
+	};
+
+};
+
+
+&uart0 {
+	status = "okay";
+};
+
diff --git a/arch/loongarch/boot/dts/loongson-2k0300.dtsi b/arch/loongarch/boot/dts/loongson-2k0300.dtsi
new file mode 100644
index 000000000000..91062b388e77
--- /dev/null
+++ b/arch/loongarch/boot/dts/loongson-2k0300.dtsi
@@ -0,0 +1,95 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2023 Loongson Technology Corporation Limited
+ */
+
+/dts-v1/;
+
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/clock/loongson,ls2k-clk.h>
+
+/ {
+	#address-cells = <2>;
+	#size-cells = <2>;
+
+	interrupt-parent = <&cpuintc>;
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		cpu0: cpu@0 {
+			compatible = "loongson,la264";
+			device_type = "cpu";
+			reg = <0x0>;
+			clocks = <&clk LS2K0300_CLK_NODE_DIV>;
+		};
+	};
+
+	ref_120m: clock-ref-120m {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <120000000>;
+		clock-output-names = "ref_120m";
+	};
+
+	cpuintc: interrupt-controller {
+		compatible = "loongson,cpu-interrupt-controller";
+		#interrupt-cells = <1>;
+		interrupt-controller;
+	};
+
+	liointc0: interrupt-controller@16001400 {
+		compatible = "loongson,liointc-2.0";
+		reg = <0x0 0x16001400 0x0 0x40>,
+				<0x0 0x16001040 0x0 0x8>;
+		reg-names = "main", "isr0";
+
+		interrupt-controller;
+		#address-cells = <0>;
+		#interrupt-cells = <2>;
+		interrupt-parent = <&cpuintc>;
+		interrupts = <2>;
+		interrupt-names = "int0";
+
+		loongson,parent_int_map = <0xffffffff>, /* int0 */
+						<0x00000000>, /* int1 */
+						<0x00000000>, /* int2 */
+						<0x00000000>; /* int3 */
+	};
+	liointc1: interrupt-controller@16001440 {
+		compatible = "loongson,liointc-2.0";
+		reg = <0x0 0x16001440 0x0 0x40>,
+				<0x0 0x16001048 0x0 0x8>;
+		reg-names = "main", "isr0";
+
+		interrupt-controller;
+		#address-cells = <0>;
+		#interrupt-cells = <2>;
+		interrupt-parent = <&cpuintc>;
+		interrupts = <4>;
+		interrupt-names = "int2";
+
+		loongson,parent_int_map = <0x00000000>, /* int0 */
+						<0x00000000>, /* int1 */
+						<0xffffffff>, /* int2 */
+						<0x00000000>; /* int3 */
+	};
+	clk: clock-controller@16000400 {
+		compatible = "loongson,ls2k0300-clk";
+		reg = <0x0 0x16000400 0x0 0x2c>;
+		#clock-cells = <1>;
+		clocks = <&ref_120m>;
+		clock-names = "ref_120m";
+	};
+
+	uart0: serial@16100000 {
+		compatible = "ns16550a";
+		reg = <0x0 0x16100000 0x0 0x10>;
+		clocks = <&clk LS2K0300_CLK_APB_GATE>;
+		interrupt-parent = <&liointc0>;
+		interrupts = <0 IRQ_TYPE_LEVEL_HIGH>;
+		no-loopback-test;
+		status = "disabled";
+	};
+};
-- 
2.43.0

Re: [PATCH] loongarch: boot: dts: Add Loongson-2K0300 support

[kernel test robot]

:::::: 
:::::: Manual check reason: "dtcheck: binding changes may go via different trees"
:::::: 

BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
In-Reply-To: <tencent_043BCD1F1043957E96ED022D75601AF05505@qq.com>
References: <tencent_043BCD1F1043957E96ED022D75601AF05505@qq.com>
TO: wjjsn <wjjsn@qq.com>
TO: robh@kernel.org
TO: krzk+dt@kernel.org
TO: conor+dt@kernel.org
TO: chenhuacai@kernel.org
CC: kernel@xen0n.name
CC: devicetree@vger.kernel.org
CC: loongarch@lists.linux.dev
CC: linux-kernel@vger.kernel.org
CC: wjjsn <wjjsn@qq.com>

Hi wjjsn,

kernel test robot noticed the following build warnings:

[auto build test WARNING on robh/for-next]
[also build test WARNING on linus/master v7.0-rc4 next-20260320]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/wjjsn/loongarch-boot-dts-Add-Loongson-2K0300-support/20260322-130435
base:   https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next
patch link:    https://lore.kernel.org/r/tencent_043BCD1F1043957E96ED022D75601AF05505%40qq.com
patch subject: [PATCH] loongarch: boot: dts: Add Loongson-2K0300 support
:::::: branch date: 12 hours ago
:::::: commit date: 12 hours ago
config: loongarch-randconfig-2051-20260322 (https://download.01.org/0day-ci/archive/20260322/202603221812.paxyhoFM-lkp@intel.com/config)
compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project f43d6834093b19baf79beda8c0337ab020ac5f17)
rustc: rustc 1.88.0 (6b00bc388 2025-06-23)
dtschema: 2025.13.dev8+g0515abdd9
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260322/202603221812.paxyhoFM-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/r/202603221812.paxyhoFM-lkp@intel.com/

dtcheck warnings: (new ones prefixed by >>)
>> arch/loongarch/boot/dts/loongson-2k0300-ref.dtb: /: failed to match any schema with compatible: ['loongson,ls2k0300-ref', 'loongson,ls2k0300']
>> arch/loongarch/boot/dts/loongson-2k0300-ref.dtb: /: failed to match any schema with compatible: ['loongson,ls2k0300-ref', 'loongson,ls2k0300']
>> arch/loongarch/boot/dts/loongson-2k0300-ref.dtb: clock-controller@16000400 (loongson,ls2k0300-clk): False schema does not allow ['ref_120m']
   	from schema $id: http://devicetree.org/schemas/clock/loongson,ls2k-clk.yaml
>> arch/loongarch/boot/dts/loongson-2k0300-ref.dtb: clock-controller@16000400 (loongson,ls2k0300-clk): clock-names:0: 'ref_100m' was expected
   	from schema $id: http://devicetree.org/schemas/clock/loongson,ls2k-clk.yaml

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki