Merge tag 'anlogic-initial-6.19-v2' of https://git.kernel.org/pub/scm/linux/kernel/git/conor/linux into soc/newsoc

arndb · arndb · commit 9b418a3bfdd4 · 2025-11-21T21:29:57.000+01:00
Initial Anlogic Platform Support Add bindings for the serial and timer peripherals, and a basic soc dtsi for the Anlogic dr1v90 SoC. The Milianke MLKPAI FS01 is the first board for this SoC. Add myself as maintainer for this platform for the time being. Signed-off-by: Conor Dooley <conor.dooley@microchip.com> * tag 'anlogic-initial-6.19-v2' of https://git.kernel.org/pub/scm/linux/kernel/git/conor/linux: MAINTAINERS: Setup support for Anlogic tree riscv: defconfig: Enable Anlogic SoC riscv: dts: anlogic: Add Milianke MLKPAI FS01 board riscv: dts: Add initial Anlogic DR1V90 SoC device tree riscv: Add Anlogic SoC famly Kconfig support dt-bindings: serial: snps-dw-apb-uart: Add Anlogic DR1V90 uart dt-bindings: timer: Add Anlogic DR1V90 ACLINT MTIMER dt-bindings: riscv: Add Anlogic DR1V90 dt-bindings: riscv: Add Nuclei UX900 compatibles dt-bindings: vendor-prefixes: Add Anlogic, Milianke and Nuclei
diff --git a/Documentation/devicetree/bindings/riscv/anlogic.yaml b/Documentation/devicetree/bindings/riscv/anlogic.yaml
@@ -0,0 +1,27 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/riscv/anlogic.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Anlogic SoC-based boards
+
+maintainers:
+  - Junhui Liu <junhui.liu@pigmoral.tech>
+
+description:
+  Anlogic SoC-based boards
+
+properties:
+  $nodename:
+    const: '/'
+  compatible:
+    oneOf:
+      - items:
+          - enum:
+              - milianke,mlkpai-fs01
+          - const: anlogic,dr1v90
+
+additionalProperties: true
+
+...
diff --git a/Documentation/devicetree/bindings/riscv/cpus.yaml b/Documentation/devicetree/bindings/riscv/cpus.yaml
@@ -48,6 +48,7 @@ properties:
               - amd,mbv64
               - andestech,ax45mp
               - canaan,k210
+              - nuclei,ux900
               - sifive,bullet0
               - sifive,e5
               - sifive,e7
diff --git a/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml b/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml
@@ -51,6 +51,7 @@ properties:
           - const: renesas,rzn1-uart
       - items:
           - enum:
+              - anlogic,dr1v90-uart
               - brcm,bcm11351-dw-apb-uart
               - brcm,bcm21664-dw-apb-uart
               - rockchip,px30-uart
diff --git a/Documentation/devicetree/bindings/timer/thead,c900-aclint-mtimer.yaml b/Documentation/devicetree/bindings/timer/thead,c900-aclint-mtimer.yaml
@@ -4,18 +4,23 @@
 $id: http://devicetree.org/schemas/timer/thead,c900-aclint-mtimer.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
-title: Sophgo CLINT Timer
+title: ACLINT Machine-level Timer Device
 
 maintainers:
   - Inochi Amaoto <inochiama@outlook.com>
 
 properties:
   compatible:
-    items:
-      - enum:
-          - sophgo,sg2042-aclint-mtimer
-          - sophgo,sg2044-aclint-mtimer
-      - const: thead,c900-aclint-mtimer
+    oneOf:
+      - items:
+          - enum:
+              - sophgo,sg2042-aclint-mtimer
+              - sophgo,sg2044-aclint-mtimer
+          - const: thead,c900-aclint-mtimer
+      - items:
+          - enum:
+              - anlogic,dr1v90-aclint-mtimer
+          - const: nuclei,ux900-aclint-mtimer
 
   reg:
     items:
diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml
@@ -132,6 +132,8 @@ patternProperties:
     description: Anbernic
   "^andestech,.*":
     description: Andes Technology Corporation
+  "^anlogic,.*":
+    description: Shanghai Anlogic Infotech Co., Ltd.
   "^anvo,.*":
     description: Anvo-Systems Dresden GmbH
   "^aoly,.*":
@@ -1025,6 +1027,8 @@ patternProperties:
     description: MikroElektronika d.o.o.
   "^mikrotik,.*":
     description: MikroTik
+  "^milianke,.*":
+    description: Changzhou Milianke Electronic Technology Co., Ltd
   "^milkv,.*":
     description: MilkV Technology Co., Ltd
   "^miniand,.*":
@@ -1142,6 +1146,8 @@ patternProperties:
     description: Novatek
   "^novtech,.*":
     description: NovTech, Inc.
+  "^nuclei,.*":
+    description: Nuclei System Technology
   "^numonyx,.*":
     description: Numonyx (deprecated, use micron)
     deprecated: true
diff --git a/MAINTAINERS b/MAINTAINERS
@@ -22089,6 +22089,14 @@ F:	Documentation/devicetree/bindings/riscv/andes.yaml
 F:	Documentation/devicetree/bindings/timer/andestech,plmt0.yaml
 F:	arch/riscv/boot/dts/andes/
 
+RISC-V ANLOGIC SoC SUPPORT
+M:	Conor Dooley <conor@kernel.org>
+T:	git https://git.kernel.org/pub/scm/linux/kernel/git/conor/linux.git/
+L:	linux-riscv@lists.infradead.org
+S:	Odd Fixes
+F:	Documentation/devicetree/bindings/riscv/anlogic.yaml
+F:	arch/riscv/boot/dts/anlogic/
+
 RISC-V ARCHITECTURE
 M:	Paul Walmsley <pjw@kernel.org>
 M:	Palmer Dabbelt <palmer@dabbelt.com>
diff --git a/arch/riscv/Kconfig.socs b/arch/riscv/Kconfig.socs
@@ -7,6 +7,11 @@ config ARCH_ANDES
 	help
 	  This enables support for Andes SoC platform hardware.
 
+config ARCH_ANLOGIC
+	bool "Anlogic SoCs"
+	help
+	  This enables support for Anlogic SoC platform hardware.
+
 config ARCH_ESWIN
 	bool "ESWIN SoCs"
 	help
diff --git a/arch/riscv/boot/dts/Makefile b/arch/riscv/boot/dts/Makefile
@@ -1,6 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 subdir-y += allwinner
 subdir-y += andes
+subdir-y += anlogic
 subdir-y += canaan
 subdir-y += eswin
 subdir-y += microchip
diff --git a/arch/riscv/boot/dts/anlogic/Makefile b/arch/riscv/boot/dts/anlogic/Makefile
@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0
+dtb-$(CONFIG_ARCH_ANLOGIC) += dr1v90-mlkpai-fs01.dtb
diff --git a/arch/riscv/boot/dts/anlogic/dr1v90-mlkpai-fs01.dts b/arch/riscv/boot/dts/anlogic/dr1v90-mlkpai-fs01.dts
@@ -0,0 +1,28 @@
+// SPDX-License-Identifier: GPL-2.0 OR MIT
+/*
+ * Copyright (C) 2025 Junhui Liu <junhui.liu@pigmoral.tech>
+ */
+
+#include "dr1v90.dtsi"
+
+/ {
+	model = "Milianke MLKPAI-FS01";
+	compatible = "milianke,mlkpai-fs01", "anlogic,dr1v90";
+
+	aliases {
+		serial0 = &uart1;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	memory@0 {
+		device_type = "memory";
+		reg = <0x0 0x0 0x0 0x20000000>;
+	};
+};
+
+&uart1 {
+	status = "okay";
+};
diff --git a/arch/riscv/boot/dts/anlogic/dr1v90.dtsi b/arch/riscv/boot/dts/anlogic/dr1v90.dtsi
@@ -0,0 +1,100 @@
+// SPDX-License-Identifier: GPL-2.0 OR MIT
+/*
+ * Copyright (C) 2025 Junhui Liu <junhui.liu@pigmoral.tech>
+ */
+
+/dts-v1/;
+/ {
+	#address-cells = <2>;
+	#size-cells = <2>;
+	model = "Anlogic DR1V90";
+	compatible = "anlogic,dr1v90";
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		timebase-frequency = <800000000>;
+
+		cpu@0 {
+			compatible = "nuclei,ux900", "riscv";
+			d-cache-block-size = <64>;
+			d-cache-sets = <256>;
+			d-cache-size = <32768>;
+			device_type = "cpu";
+			i-cache-block-size = <64>;
+			i-cache-sets = <256>;
+			i-cache-size = <32768>;
+			mmu-type = "riscv,sv39";
+			reg = <0>;
+			riscv,isa-base = "rv64i";
+			riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "zba", "zbb", "zbc",
+					       "zbkc", "zbs", "zicntr", "zicsr", "zifencei",
+					       "zihintpause", "zihpm";
+
+			cpu0_intc: interrupt-controller {
+				compatible = "riscv,cpu-intc";
+				#interrupt-cells = <1>;
+				interrupt-controller;
+			};
+		};
+	};
+
+	soc {
+		compatible = "simple-bus";
+		interrupt-parent = <&plic>;
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		aclint_mswi: interrupt-controller@68031000 {
+			compatible = "anlogic,dr1v90-aclint-mswi", "nuclei,ux900-aclint-mswi";
+			reg = <0x0 0x68031000 0x0 0x4000>;
+			interrupts-extended = <&cpu0_intc 3>;
+		};
+
+		aclint_mtimer: timer@68035000 {
+			compatible = "anlogic,dr1v90-aclint-mtimer", "nuclei,ux900-aclint-mtimer";
+			reg = <0x0 0x68035000 0x0 0x8000>;
+			reg-names = "mtimecmp";
+			interrupts-extended = <&cpu0_intc 7>;
+		};
+
+		aclint_sswi: interrupt-controller@6803d000 {
+			compatible = "anlogic,dr1v90-aclint-sswi", "nuclei,ux900-aclint-sswi";
+			reg = <0x0 0x6803d000 0x0 0x3000>;
+			#interrupt-cells = <0>;
+			interrupt-controller;
+			interrupts-extended = <&cpu0_intc 1>;
+		};
+
+		plic: interrupt-controller@6c000000 {
+			compatible = "anlogic,dr1v90-plic", "sifive,plic-1.0.0";
+			reg = <0x0 0x6c000000 0x0 0x4000000>;
+			#address-cells = <0>;
+			#interrupt-cells = <1>;
+			interrupt-controller;
+			interrupts-extended = <&cpu0_intc 11>, <&cpu0_intc 9>;
+			riscv,ndev = <150>;
+		};
+
+		uart0: serial@f8400000 {
+			compatible = "anlogic,dr1v90-uart", "snps,dw-apb-uart";
+			reg = <0x0 0xf8400000 0x0 0x1000>;
+			clock-frequency = <50000000>;
+			interrupts = <71>;
+			reg-io-width = <4>;
+			reg-shift = <2>;
+			status = "disabled";
+		};
+
+		uart1: serial@f8401000 {
+			compatible = "anlogic,dr1v90-uart", "snps,dw-apb-uart";
+			reg = <0x0 0xf8401000 0x0 0x1000>;
+			clock-frequency = <50000000>;
+			interrupts = <72>;
+			reg-io-width = <4>;
+			reg-shift = <2>;
+			status = "disabled";
+		};
+	};
+};
diff --git a/arch/riscv/configs/defconfig b/arch/riscv/configs/defconfig
@@ -23,6 +23,7 @@ CONFIG_CHECKPOINT_RESTORE=y
 CONFIG_BLK_DEV_INITRD=y
 CONFIG_PROFILING=y
 CONFIG_ARCH_ANDES=y
+CONFIG_ARCH_ANLOGIC=y
 CONFIG_ARCH_MICROCHIP=y
 CONFIG_ARCH_SIFIVE=y
 CONFIG_ARCH_SOPHGO=y

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,2 @@`
	`1`	`+# SPDX-License-Identifier: GPL-2.0`
	`2`	`+dtb-$(CONFIG_ARCH_ANLOGIC) += dr1v90-mlkpai-fs01.dtb`