kernel/arch/riscv/boot/dts/canaan/k210.dtsi

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (C) 2019-20 Sean Anderson <seanga2@gmail.com>
 * Copyright (C) 2020 Western Digital Corporation or its affiliates.
 */
#include <dt-bindings/clock/k210-clk.h>
#include <dt-bindings/pinctrl/k210-fpioa.h>
#include <dt-bindings/reset/k210-rst.h>

/ {
	/*
	 * Although the K210 is a 64-bit CPU, the address bus is only 32-bits
	 * wide, and the upper half of all addresses is ignored.
	 */
	#address-cells = <1>;
	#size-cells = <1>;
	compatible = "canaan,kendryte-k210";

	aliases {
		serial0 = &uarths0;
		serial1 = &uart1;
		serial2 = &uart2;
		serial3 = &uart3;
	};

	/*
	 * The K210 has an sv39 MMU following the privileged specification v1.9.
	 * Since this is a non-ratified draft specification, the kernel does not
	 * support it and the K210 support enabled only for the !MMU case.
	 * Be consistent with this by setting the CPUs MMU type to "none".
	 */
	cpus {
		#address-cells = <1>;
		#size-cells = <0>;
		timebase-frequency = <7800000>;
		cpu0: cpu@0 {
			device_type = "cpu";
			compatible = "canaan,k210", "riscv";
			reg = <0>;
			riscv,isa = "rv64imafdc";
			mmu-type = "riscv,none";
			i-cache-block-size = <64>;
			i-cache-size = <0x8000>;
			d-cache-block-size = <64>;
			d-cache-size = <0x8000>;
			cpu0_intc: interrupt-controller {
				#interrupt-cells = <1>;
				interrupt-controller;
				compatible = "riscv,cpu-intc";
			};
		};
		cpu1: cpu@1 {
			device_type = "cpu";
			compatible = "canaan,k210", "riscv";
			reg = <1>;
			riscv,isa = "rv64imafdc";
			mmu-type = "riscv,none";
			i-cache-block-size = <64>;
			i-cache-size = <0x8000>;
			d-cache-block-size = <64>;
			d-cache-size = <0x8000>;
			cpu1_intc: interrupt-controller {
				#interrupt-cells = <1>;
				interrupt-controller;
				compatible = "riscv,cpu-intc";
			};
		};

		cpu-map {
			cluster0 {
				core0 {
					cpu = <&cpu0>;
				};

				core1 {
					cpu = <&cpu1>;
				};
			};
		};
	};

	sram: memory@80000000 {
		device_type = "memory";
		compatible = "canaan,k210-sram";
		reg = <0x80000000 0x400000>,
		      <0x80400000 0x200000>,
		      <0x80600000 0x200000>;
		reg-names = "sram0", "sram1", "aisram";
		clocks = <&sysclk K210_CLK_SRAM0>,
			 <&sysclk K210_CLK_SRAM1>,
			 <&sysclk K210_CLK_AI>;
		clock-names = "sram0", "sram1", "aisram";
	};

	clocks {
		in0: oscillator {
			compatible = "fixed-clock";
			#clock-cells = <0>;
			clock-frequency = <26000000>;
		};
	};

	soc {
		#address-cells = <1>;
		#size-cells = <1>;
		compatible = "simple-bus";
		ranges;
		interrupt-parent = <&plic0>;

		rom0: nvmem@1000 {
			reg = <0x1000 0x1000>;
			read-only;
		};

		clint0: timer@2000000 {
			compatible = "canaan,k210-clint", "sifive,clint0";
			reg = <0x2000000 0xC000>;
			interrupts-extended = <&cpu0_intc 3 &cpu0_intc 7
					      &cpu1_intc 3 &cpu1_intc 7>;
		};

		plic0: interrupt-controller@c000000 {
			#interrupt-cells = <1>;
			#address-cells = <0>;
			compatible = "canaan,k210-plic", "sifive,plic-1.0.0";
			reg = <0xC000000 0x4000000>;
			interrupt-controller;
			interrupts-extended = <&cpu0_intc 11>, <&cpu0_intc 9>,
					      <&cpu1_intc 11>, <&cpu1_intc 9>;
			riscv,ndev = <65>;
		};

		uarths0: serial@38000000 {
			compatible = "canaan,k210-uarths", "sifive,uart0";
			reg = <0x38000000 0x1000>;
			interrupts = <33>;
			clocks = <&sysclk K210_CLK_CPU>;
		};

		gpio0: gpio-controller@38001000 {
			#interrupt-cells = <2>;
			#gpio-cells = <2>;
			compatible = "canaan,k210-gpiohs", "sifive,gpio0";
			reg = <0x38001000 0x1000>;
			interrupt-controller;
			interrupts = <34 35 36 37 38 39 40 41
				      42 43 44 45 46 47 48 49
				      50 51 52 53 54 55 56 57
				      58 59 60 61 62 63 64 65>;
			gpio-controller;
			ngpios = <32>;
		};

		dmac0: dma-controller@50000000 {
			compatible = "snps,axi-dma-1.01a";
			reg = <0x50000000 0x1000>;
			interrupts = <27 28 29 30 31 32>;
			#dma-cells = <1>;
			clocks = <&sysclk K210_CLK_DMA>, <&sysclk K210_CLK_DMA>;
			clock-names = "core-clk", "cfgr-clk";
			resets = <&sysrst K210_RST_DMA>;
			dma-channels = <6>;
			snps,dma-masters = <2>;
			snps,priority = <0 1 2 3 4 5>;
			snps,data-width = <5>;
			snps,block-size = <0x200000 0x200000 0x200000
					   0x200000 0x200000 0x200000>;
			snps,axi-max-burst-len = <256>;
		};

		apb0: bus@50200000 {
			#address-cells = <1>;
			#size-cells = <1>;
			compatible = "simple-pm-bus";
			ranges;
			clocks = <&sysclk K210_CLK_APB0>;

			gpio1: gpio@50200000 {
				#address-cells = <1>;
				#size-cells = <0>;
				compatible = "snps,dw-apb-gpio";
				reg = <0x50200000 0x80>;
				clocks = <&sysclk K210_CLK_APB0>,
					 <&sysclk K210_CLK_GPIO>;
				clock-names = "bus", "db";
				resets = <&sysrst K210_RST_GPIO>;

				gpio1_0: gpio-port@0 {
					#gpio-cells = <2>;
					#interrupt-cells = <2>;
					compatible = "snps,dw-apb-gpio-port";
					reg = <0>;
					interrupt-controller;
					interrupts = <23>;
					gpio-controller;
					ngpios = <8>;
				};
			};

			uart1: serial@50210000 {
				compatible = "snps,dw-apb-uart";
				reg = <0x50210000 0x100>;
				interrupts = <11>;
				clocks = <&sysclk K210_CLK_UART1>,
					 <&sysclk K210_CLK_APB0>;
				clock-names = "baudclk", "apb_pclk";
				resets = <&sysrst K210_RST_UART1>;
				reg-io-width = <4>;
				reg-shift = <2>;
				dcd-override;
				dsr-override;
				cts-override;
				ri-override;
			};

			uart2: serial@50220000 {
				compatible = "snps,dw-apb-uart";
				reg = <0x50220000 0x100>;
				interrupts = <12>;
				clocks = <&sysclk K210_CLK_UART2>,
					 <&sysclk K210_CLK_APB0>;
				clock-names = "baudclk", "apb_pclk";
				resets = <&sysrst K210_RST_UART2>;
				reg-io-width = <4>;
				reg-shift = <2>;
				dcd-override;
				dsr-override;
				cts-override;
				ri-override;
			};

			uart3: serial@50230000 {
				compatible = "snps,dw-apb-uart";
				reg = <0x50230000 0x100>;
				interrupts = <13>;
				clocks = <&sysclk K210_CLK_UART3>,
					 <&sysclk K210_CLK_APB0>;
				clock-names = "baudclk", "apb_pclk";
				resets = <&sysrst K210_RST_UART3>;
				reg-io-width = <4>;
				reg-shift = <2>;
				dcd-override;
				dsr-override;
				cts-override;
				ri-override;
			};

			spi2: spi@50240000 {
				compatible = "canaan,k210-spi";
				spi-slave;
				reg = <0x50240000 0x100>;
				#address-cells = <0>;
				#size-cells = <0>;
				interrupts = <3>;
				clocks = <&sysclk K210_CLK_SPI2>,
					 <&sysclk K210_CLK_APB0>;
				clock-names = "ssi_clk", "pclk";
				resets = <&sysrst K210_RST_SPI2>;
				spi-max-frequency = <25000000>;
			};

			i2s0: i2s@50250000 {
				compatible = "snps,designware-i2s";
				reg = <0x50250000 0x200>;
				interrupts = <5>;
				clocks = <&sysclk K210_CLK_I2S0>;
				clock-names = "i2sclk";
				resets = <&sysrst K210_RST_I2S0>;
			};

			i2s1: i2s@50260000 {
				compatible = "snps,designware-i2s";
				reg = <0x50260000 0x200>;
				interrupts = <6>;
				clocks = <&sysclk K210_CLK_I2S1>;
				clock-names = "i2sclk";
				resets = <&sysrst K210_RST_I2S1>;
			};

			i2s2: i2s@50270000 {
				compatible = "snps,designware-i2s";
				reg = <0x50270000 0x200>;
				interrupts = <7>;
				clocks = <&sysclk K210_CLK_I2S2>;
				clock-names = "i2sclk";
				resets = <&sysrst K210_RST_I2S2>;
			};

			i2c0: i2c@50280000 {
				compatible = "snps,designware-i2c";
				reg = <0x50280000 0x100>;
				interrupts = <8>;
				clocks = <&sysclk K210_CLK_I2C0>,
					 <&sysclk K210_CLK_APB0>;
				clock-names = "ref", "pclk";
				resets = <&sysrst K210_RST_I2C0>;
			};

			i2c1: i2c@50290000 {
				compatible = "snps,designware-i2c";
				reg = <0x50290000 0x100>;
				interrupts = <9>;
				clocks = <&sysclk K210_CLK_I2C1>,
					 <&sysclk K210_CLK_APB0>;
				clock-names = "ref", "pclk";
				resets = <&sysrst K210_RST_I2C1>;
			};

			i2c2: i2c@502a0000 {
				compatible = "snps,designware-i2c";
				reg = <0x502A0000 0x100>;
				interrupts = <10>;
				clocks = <&sysclk K210_CLK_I2C2>,
					 <&sysclk K210_CLK_APB0>;
				clock-names = "ref", "pclk";
				resets = <&sysrst K210_RST_I2C2>;
			};

			fpioa: pinmux@502b0000 {
				compatible = "canaan,k210-fpioa";
				reg = <0x502B0000 0x100>;
				clocks = <&sysclk K210_CLK_FPIOA>,
					 <&sysclk K210_CLK_APB0>;
				clock-names = "ref", "pclk";
				resets = <&sysrst K210_RST_FPIOA>;
				canaan,k210-sysctl-power = <&sysctl 108>;
			};

			timer0: timer@502d0000 {
				compatible = "snps,dw-apb-timer";
				reg = <0x502D0000 0x100>;
				interrupts = <14 15>;
				clocks = <&sysclk K210_CLK_TIMER0>,
					 <&sysclk K210_CLK_APB0>;
				clock-names = "timer", "pclk";
				resets = <&sysrst K210_RST_TIMER0>;
			};

			timer1: timer@502e0000 {
				compatible = "snps,dw-apb-timer";
				reg = <0x502E0000 0x100>;
				interrupts = <16 17>;
				clocks = <&sysclk K210_CLK_TIMER1>,
					 <&sysclk K210_CLK_APB0>;
				clock-names = "timer", "pclk";
				resets = <&sysrst K210_RST_TIMER1>;
			};

			timer2: timer@502f0000 {
				compatible = "snps,dw-apb-timer";
				reg = <0x502F0000 0x100>;
				interrupts = <18 19>;
				clocks = <&sysclk K210_CLK_TIMER2>,
					 <&sysclk K210_CLK_APB0>;
				clock-names = "timer", "pclk";
				resets = <&sysrst K210_RST_TIMER2>;
			};
		};

		apb1: bus@50400000 {
			#address-cells = <1>;
			#size-cells = <1>;
			compatible = "simple-pm-bus";
			ranges;
			clocks = <&sysclk K210_CLK_APB1>;

			wdt0: watchdog@50400000 {
				compatible = "snps,dw-wdt";
				reg = <0x50400000 0x100>;
				interrupts = <21>;
				clocks = <&sysclk K210_CLK_WDT0>,
					 <&sysclk K210_CLK_APB1>;
				clock-names = "tclk", "pclk";
				resets = <&sysrst K210_RST_WDT0>;
			};

			wdt1: watchdog@50410000 {
				compatible = "snps,dw-wdt";
				reg = <0x50410000 0x100>;
				interrupts = <22>;
				clocks = <&sysclk K210_CLK_WDT1>,
					 <&sysclk K210_CLK_APB1>;
				clock-names = "tclk", "pclk";
				resets = <&sysrst K210_RST_WDT1>;
			};

			sysctl: syscon@50440000 {
				compatible = "canaan,k210-sysctl",
					     "syscon", "simple-mfd";
				reg = <0x50440000 0x100>;
				clocks = <&sysclk K210_CLK_APB1>;
				clock-names = "pclk";

				sysclk: clock-controller {
					#clock-cells = <1>;
					compatible = "canaan,k210-clk";
					clocks = <&in0>;
				};

				sysrst: reset-controller {
					compatible = "canaan,k210-rst";
					#reset-cells = <1>;
				};

				reboot: syscon-reboot {
					compatible = "syscon-reboot";
					regmap = <&sysctl>;
					offset = <48>;
					mask = <1>;
					value = <1>;
				};
			};
		};

		apb2: bus@52000000 {
			#address-cells = <1>;
			#size-cells = <1>;
			compatible = "simple-pm-bus";
			ranges;
			clocks = <&sysclk K210_CLK_APB2>;

			spi0: spi@52000000 {
				#address-cells = <1>;
				#size-cells = <0>;
				compatible = "canaan,k210-spi";
				reg = <0x52000000 0x100>;
				interrupts = <1>;
				clocks = <&sysclk K210_CLK_SPI0>,
					 <&sysclk K210_CLK_APB2>;
				clock-names = "ssi_clk", "pclk";
				resets = <&sysrst K210_RST_SPI0>;
				reset-names = "spi";
				spi-max-frequency = <25000000>;
				num-cs = <4>;
				reg-io-width = <4>;
			};

			spi1: spi@53000000 {
				#address-cells = <1>;
				#size-cells = <0>;
				compatible = "canaan,k210-spi";
				reg = <0x53000000 0x100>;
				interrupts = <2>;
				clocks = <&sysclk K210_CLK_SPI1>,
					 <&sysclk K210_CLK_APB2>;
				clock-names = "ssi_clk", "pclk";
				resets = <&sysrst K210_RST_SPI1>;
				reset-names = "spi";
				spi-max-frequency = <25000000>;
				num-cs = <4>;
				reg-io-width = <4>;
			};

			spi3: spi@54000000 {
				#address-cells = <1>;
				#size-cells = <0>;
				compatible = "snps,dwc-ssi-1.01a";
				reg = <0x54000000 0x200>;
				interrupts = <4>;
				clocks = <&sysclk K210_CLK_SPI3>,
					 <&sysclk K210_CLK_APB2>;
				clock-names = "ssi_clk", "pclk";
				resets = <&sysrst K210_RST_SPI3>;
				reset-names = "spi";
				/* Could possibly go up to 200 MHz */
				spi-max-frequency = <100000000>;
				num-cs = <4>;
				reg-io-width = <4>;
			};
		};
	};
};