[PW_SID:972815] riscv: sophgo: cv18xx: Add reset generator support

Documentation/devicetree/bindings/reset/sophgo,sg2042-reset.yaml

@@ -16,7 +16,9 @@ properties:
           - enum:
               - sophgo,sg2044-reset
           - const: sophgo,sg2042-reset
-      - const: sophgo,sg2042-reset
+      - enum:
+          - sophgo,cv1800b-reset
+          - sophgo,sg2042-reset
 
   reg:
     maxItems: 1

arch/riscv/boot/dts/sophgo/cv180x.dtsi

@@ -7,6 +7,7 @@
 #include <dt-bindings/clock/sophgo,cv1800.h>
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/interrupt-controller/irq.h>
+#include "cv18xx-reset.h"
 
 / {
 	#address-cells = <1>;
@@ -24,11 +25,18 @@
 		#size-cells = <1>;
 		ranges;
 
+		rst: reset-controller@3003000 {
+			compatible = "sophgo,cv1800b-reset";
+			reg = <0x3003000 0x1000>;
+			#reset-cells = <1>;
+		};
+
 		gpio0: gpio@3020000 {
 			compatible = "snps,dw-apb-gpio";
 			reg = <0x3020000 0x1000>;
 			#address-cells = <1>;
 			#size-cells = <0>;
+			resets = <&rst RST_GPIO0>;
 
 			porta: gpio-controller@0 {
 				compatible = "snps,dw-apb-gpio-port";
@@ -47,6 +55,7 @@
 			reg = <0x3021000 0x1000>;
 			#address-cells = <1>;
 			#size-cells = <0>;
+			resets = <&rst RST_GPIO1>;
 
 			portb: gpio-controller@0 {
 				compatible = "snps,dw-apb-gpio-port";
@@ -65,6 +74,7 @@
 			reg = <0x3022000 0x1000>;
 			#address-cells = <1>;
 			#size-cells = <0>;
+			resets = <&rst RST_GPIO2>;
 
 			portc: gpio-controller@0 {
 				compatible = "snps,dw-apb-gpio-port";
@@ -83,6 +93,7 @@
 			reg = <0x3023000 0x1000>;
 			#address-cells = <1>;
 			#size-cells = <0>;
+			resets = <&rst RST_GPIO3>;
 
 			portd: gpio-controller@0 {
 				compatible = "snps,dw-apb-gpio-port";
@@ -126,6 +137,7 @@
 			clocks = <&clk CLK_I2C>, <&clk CLK_APB_I2C0>;
 			clock-names = "ref", "pclk";
 			interrupts = <SOC_PERIPHERAL_IRQ(33) IRQ_TYPE_LEVEL_HIGH>;
+			resets = <&rst RST_I2C0>;
 			status = "disabled";
 		};
 
@@ -137,6 +149,7 @@
 			clocks = <&clk CLK_I2C>, <&clk CLK_APB_I2C1>;
 			clock-names = "ref", "pclk";
 			interrupts = <SOC_PERIPHERAL_IRQ(34) IRQ_TYPE_LEVEL_HIGH>;
+			resets = <&rst RST_I2C1>;
 			status = "disabled";
 		};
 
@@ -148,6 +161,7 @@
 			clocks = <&clk CLK_I2C>, <&clk CLK_APB_I2C2>;
 			clock-names = "ref", "pclk";
 			interrupts = <SOC_PERIPHERAL_IRQ(35) IRQ_TYPE_LEVEL_HIGH>;
+			resets = <&rst RST_I2C2>;
 			status = "disabled";
 		};
 
@@ -159,6 +173,7 @@
 			clocks = <&clk CLK_I2C>, <&clk CLK_APB_I2C3>;
 			clock-names = "ref", "pclk";
 			interrupts = <SOC_PERIPHERAL_IRQ(36) IRQ_TYPE_LEVEL_HIGH>;
+			resets = <&rst RST_I2C3>;
 			status = "disabled";
 		};
 
@@ -170,6 +185,7 @@
 			clocks = <&clk CLK_I2C>, <&clk CLK_APB_I2C4>;
 			clock-names = "ref", "pclk";
 			interrupts = <SOC_PERIPHERAL_IRQ(37) IRQ_TYPE_LEVEL_HIGH>;
+			resets = <&rst RST_I2C4>;
 			status = "disabled";
 		};
 
@@ -181,6 +197,7 @@
 			clock-names = "baudclk", "apb_pclk";
 			reg-shift = <2>;
 			reg-io-width = <4>;
+			resets = <&rst RST_UART0>;
 			status = "disabled";
 		};
 
@@ -192,6 +209,7 @@
 			clock-names = "baudclk", "apb_pclk";
 			reg-shift = <2>;
 			reg-io-width = <4>;
+			resets = <&rst RST_UART1>;
 			status = "disabled";
 		};
 
@@ -203,6 +221,7 @@
 			clock-names = "baudclk", "apb_pclk";
 			reg-shift = <2>;
 			reg-io-width = <4>;
+			resets = <&rst RST_UART2>;
 			status = "disabled";
 		};
 
@@ -214,6 +233,7 @@
 			clock-names = "baudclk", "apb_pclk";
 			reg-shift = <2>;
 			reg-io-width = <4>;
+			resets = <&rst RST_UART3>;
 			status = "disabled";
 		};
 
@@ -225,6 +245,7 @@
 			clocks = <&clk CLK_SPI>, <&clk CLK_APB_SPI0>;
 			clock-names = "ssi_clk", "pclk";
 			interrupts = <SOC_PERIPHERAL_IRQ(38) IRQ_TYPE_LEVEL_HIGH>;
+			resets = <&rst RST_SPI0>;
 			status = "disabled";
 		};
 
@@ -236,6 +257,7 @@
 			clocks = <&clk CLK_SPI>, <&clk CLK_APB_SPI1>;
 			clock-names = "ssi_clk", "pclk";
 			interrupts = <SOC_PERIPHERAL_IRQ(39) IRQ_TYPE_LEVEL_HIGH>;
+			resets = <&rst RST_SPI1>;
 			status = "disabled";
 		};
 
@@ -247,6 +269,7 @@
 			clocks = <&clk CLK_SPI>, <&clk CLK_APB_SPI2>;
 			clock-names = "ssi_clk", "pclk";
 			interrupts = <SOC_PERIPHERAL_IRQ(40) IRQ_TYPE_LEVEL_HIGH>;
+			resets = <&rst RST_SPI2>;
 			status = "disabled";
 		};
 
@@ -258,6 +281,7 @@
 			clocks = <&clk CLK_SPI>, <&clk CLK_APB_SPI3>;
 			clock-names = "ssi_clk", "pclk";
 			interrupts = <SOC_PERIPHERAL_IRQ(41) IRQ_TYPE_LEVEL_HIGH>;
+			resets = <&rst RST_SPI3>;
 			status = "disabled";
 		};
 
@@ -269,6 +293,7 @@
 			clock-names = "baudclk", "apb_pclk";
 			reg-shift = <2>;
 			reg-io-width = <4>;
+			resets = <&rst RST_UART4>;
 			status = "disabled";
 		};
 

arch/riscv/boot/dts/sophgo/cv18xx-reset.h

@@ -0,0 +1,98 @@
+/* SPDX-License-Identifier: (GPL-2.0 OR MIT) */
+/*
+ * Copyright (C) 2025 Inochi Amaoto <inochiama@outlook.com>
+ */
+
+#ifndef _SOPHGO_CV18XX_RESET
+#define _SOPHGO_CV18XX_RESET
+
+#define RST_DDR				2
+#define RST_H264C			3
+#define RST_JPEG			4
+#define RST_H265C			5
+#define RST_VIPSYS			6
+#define RST_TDMA			7
+#define RST_TPU				8
+#define RST_TPUSYS			9
+#define RST_USB				11
+#define RST_ETH0			12
+#define RST_ETH1			13
+#define RST_NAND			14
+#define RST_EMMC			15
+#define RST_SD0				16
+#define RST_SDMA			18
+#define RST_I2S0			19
+#define RST_I2S1			20
+#define RST_I2S2			21
+#define RST_I2S3			22
+#define RST_UART0			23
+#define RST_UART1			24
+#define RST_UART2			25
+#define RST_UART3			26
+#define RST_I2C0			27
+#define RST_I2C1			28
+#define RST_I2C2			29
+#define RST_I2C3			30
+#define RST_I2C4			31
+#define RST_PWM0			32
+#define RST_PWM1			33
+#define RST_PWM2			34
+#define RST_PWM3			35
+#define RST_SPI0			40
+#define RST_SPI1			41
+#define RST_SPI2			42
+#define RST_SPI3			43
+#define RST_GPIO0			44
+#define RST_GPIO1			45
+#define RST_GPIO2			46
+#define RST_EFUSE			47
+#define RST_WDT				48
+#define RST_AHB_ROM			49
+#define RST_SPIC			50
+#define RST_TEMPSEN			51
+#define RST_SARADC			52
+#define RST_COMBO_PHY0			58
+#define RST_SPI_NAND			61
+#define RST_SE				62
+#define RST_UART4			74
+#define RST_GPIO3			75
+#define RST_SYSTEM			76
+#define RST_TIMER			77
+#define RST_TIMER0			78
+#define RST_TIMER1			79
+#define RST_TIMER2			80
+#define RST_TIMER3			81
+#define RST_TIMER4			82
+#define RST_TIMER5			83
+#define RST_TIMER6			84
+#define RST_TIMER7			85
+#define RST_WGN0			86
+#define RST_WGN1			87
+#define RST_WGN2			88
+#define RST_KEYSCAN			89
+#define RST_AUDDAC			91
+#define RST_AUDDAC_APB			92
+#define RST_AUDADC			93
+#define RST_VCSYS			95
+#define RST_ETHPHY			96
+#define RST_ETHPHY_APB			97
+#define RST_AUDSRC			98
+#define RST_VIP_CAM0			99
+#define RST_WDT1			100
+#define RST_WDT2			101
+#define RST_AUTOCLEAR_CPUCORE0		256
+#define RST_AUTOCLEAR_CPUCORE1		257
+#define RST_AUTOCLEAR_CPUCORE2		258
+#define RST_AUTOCLEAR_CPUCORE3		259
+#define RST_AUTOCLEAR_CPUSYS0		260
+#define RST_AUTOCLEAR_CPUSYS1		261
+#define RST_AUTOCLEAR_CPUSYS2		262
+#define RST_CPUCORE0			288
+#define RST_CPUCORE1			289
+#define RST_CPUCORE2			290
+#define RST_CPUCORE3			291
+#define RST_CPUSYS0			292
+#define RST_CPUSYS1			293
+#define RST_CPUSYS2			294
+
+#endif /* _SOPHGO_CV18XX_RESET */

drivers/reset/reset-simple.c

@@ -151,6 +151,8 @@ static const struct of_device_id reset_simple_dt_ids[] = {
 	{ .compatible = "snps,dw-high-reset" },
 	{ .compatible = "snps,dw-low-reset",
 		.data = &reset_simple_active_low },
+	{ .compatible = "sophgo,cv1800b-reset",
+		.data = &reset_simple_active_low },
 	{ .compatible = "sophgo,sg2042-reset",
 		.data = &reset_simple_active_low },
 	{ /* sentinel */ },