[PATCH v5 1/2] dt-bindings: loongarch: Add Loongson-2K0300

[PATCH v5 1/2] dt-bindings: loongarch: Add Loongson-2K0300

[wjjsn]

From: wjjsn <2858482031@qq.com>

Signed-off-by: wjjsn <2858482031@qq.com>
---
 Documentation/devicetree/bindings/loongarch/loongson.yaml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/loongarch/loongson.yaml b/Documentation/devicetree/bindings/loongarch/loongson.yaml
index e1a4a97b7576..8e0a917ffc01 100644
--- a/Documentation/devicetree/bindings/loongarch/loongson.yaml
+++ b/Documentation/devicetree/bindings/loongarch/loongson.yaml
@@ -14,6 +14,10 @@ properties:
     const: '/'
   compatible:
     oneOf:
+      - description: Loongson-2K0300 processor based boards
+        items:
+          - const: loongson,ls2k0300-ref
+          - const: loongson,ls2k0300
       - description: Loongson-2K0500 processor based boards
         items:
           - const: loongson,ls2k0500-ref
-- 
2.43.0

[PATCH v5 2/2] loongarch: boot: dts: Add Loongson-2K0300 support

[wjjsn]

From: wjjsn <2858482031@qq.com>

Signed-off-by: wjjsn <2858482031@qq.com>
---
 arch/loongarch/boot/dts/Makefile              |  2 +-
 .../boot/dts/loongson-2k0300-ref.dts          | 34 +++++++
 arch/loongarch/boot/dts/loongson-2k0300.dtsi  | 94 +++++++++++++++++++
 3 files changed, 129 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..a64b6b8a194d
--- /dev/null
+++ b/arch/loongarch/boot/dts/loongson-2k0300.dtsi
@@ -0,0 +1,94 @@
+// 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>;
+	};
+
+	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 v5 2/2] loongarch: boot: dts: Add Loongson-2K0300 support

[Krzysztof Kozlowski]

On 22/03/2026 08:13, wjjsn wrote:
> From: wjjsn <2858482031@qq.com>
> 
> Signed-off-by: wjjsn <2858482031@qq.com>

I don't understand what is happening here. You sent bunch of unthreaded
patches, empty commit msgs, some are being duplicated (seems at least?)...

> ---
>  arch/loongarch/boot/dts/Makefile              |  2 +-
>  .../boot/dts/loongson-2k0300-ref.dts          | 34 +++++++
>  arch/loongarch/boot/dts/loongson-2k0300.dtsi  | 94 +++++++++++++++++++
>  3 files changed, 129 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>;
> +	};
> +
> +};
> +
> +

This code has many white space issues. Please clean it up everywhere.

> +&uart0 {
> +	status = "okay";
> +};
> +

And here



Best regards,
Krzysztof

Re: [PATCH v5 2/2] loongarch: boot: dts: Add Loongson-2K0300 support

[Krzysztof Kozlowski]

On 22/03/2026 09:53, Krzysztof Kozlowski wrote:
> On 22/03/2026 08:13, wjjsn wrote:
>> From: wjjsn <2858482031@qq.com>
>>
>> Signed-off-by: wjjsn <2858482031@qq.com>
> 
> I don't understand what is happening here. You sent bunch of unthreaded
> patches, empty commit msgs, some are being duplicated (seems at least?)...

So you sent like 3 versions with similar issues, one after another. No,
slow down. One version of the same patchset per 24h, so you will
actually see what you sent.

None of the versions you sent are correct, none pass basic tests or
basic submission style.

Finally - we do not take anonymous contributions.

Best regards,
Krzysztof