riscv: dts: canaan: Add basic device tree for K230 CanMV board
Add initial dts for K230-CanMV powered by Canaan Kendryte K230 SoC,
which has two RISC-V C908 cores, a big core with vector 1.0 extension
and a small core without vector extension.
This patch is basically comes from Linux Kernel [1] and it assumes
u-boot is running on the big core. Additionally, bootctl and reboot nodes
are added to support sysreset [2] and an clk_dummy node is added to
satisfy dependencies for usb [3].
Currently, u-boot is booted by the vendor's u-boot-spl. To meet the
requirements [4][5] of vendor's u-boot-spl for u-boot, a binman node with
mkimage child node is added here, which will compress u-boot.bin with
gzip and generate an image named "uboot" in the file u-boot-gz.img.
[1] https://git.kernel.org/pub/scm/linux/kernel/git/conor/linux.git/log/?h=k230-basic
[2] https://github.com/kendryte/k230_sdk/blob/v1.8/src/big/rt-smart/kernel/bsp/maix3/board/interdrv/sysctl/sysctl_boot/sysctl_boot.c#L67
[3] https://lore.kernel.org/linux-riscv/tencent_AD84B436C2F31108B66B4739D6E306C5E80A@qq.com/
[4] https://github.com/kendryte/k230_sdk/blob/v1.8/src/little/uboot/board/canaan/common/k230_img.c#L306
[5] https://github.com/kendryte/k230_sdk/blob/v1.8/src/little/uboot/board/canaan/common/k230_img.c#L125
Signed-off-by: Junhui Liu <junhui.liu@pigmoral.tech>
Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
diff --git a/arch/riscv/dts/k230.dtsi b/arch/riscv/dts/k230.dtsi
new file mode 100644
index 0000000..cf59667
--- /dev/null
+++ b/arch/riscv/dts/k230.dtsi
@@ -0,0 +1,175 @@
+// SPDX-License-Identifier: GPL-2.0 OR MIT
+/*
+ * Copyright (C) 2024 Yangyu Chen <cyy@cyyself.name>
+ * Copyright (C) 2025 Junhui Liu <junhui.liu@pigmoral.tech>
+ */
+
+#include <dt-bindings/interrupt-controller/irq.h>
+
+/ {
+ #address-cells = <2>;
+ #size-cells = <2>;
+ compatible = "canaan,kendryte-k230";
+
+ aliases {
+ serial0 = &uart0;
+ serial1 = &uart1;
+ serial2 = &uart2;
+ serial3 = &uart3;
+ serial4 = &uart4;
+ };
+
+ cpus {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ timebase-frequency = <27000000>;
+
+ cpu@0 {
+ compatible = "thead,c908", "riscv";
+ device_type = "cpu";
+ reg = <0>;
+ riscv,isa = "rv64imafdcv_zicbom_zicbop_zicboz_zfh_zba_zbb_zbc_zbs_zvfh_svpbmt";
+ riscv,isa-base = "rv64i";
+ riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "v", "zicbom",
+ "zicbop", "zicboz", "zicntr", "zicsr", "zifencei",
+ "zihpm", "zfh", "zba", "zbb", "zbc", "zbs", "zvfh",
+ "svpbmt";
+ riscv,cbom-block-size = <64>;
+ riscv,cbop-block-size = <64>;
+ riscv,cboz-block-size = <64>;
+ mmu-type = "riscv,sv39";
+
+ cpu0_intc: interrupt-controller {
+ compatible = "riscv,cpu-intc";
+ interrupt-controller;
+ #interrupt-cells = <1>;
+ };
+ };
+ };
+
+ apb_clk: apb-clk-clock {
+ compatible = "fixed-clock";
+ clock-frequency = <50000000>;
+ clock-output-names = "apb_clk";
+ #clock-cells = <0>;
+ };
+
+ clk_dummy: clock-dummy {
+ compatible = "fixed-clock";
+ clock-frequency = <0>;
+ clock-output-names = "clk_dummy";
+ #clock-cells = <0>;
+ };
+
+ reboot: syscon-reboot {
+ compatible = "syscon-reboot";
+ regmap = <&bootctl>;
+ offset = <0x60>;
+ mask = <0x10001>;
+ value = <0x10001>;
+ };
+
+ soc {
+ compatible = "simple-bus";
+ interrupt-parent = <&plic>;
+ #address-cells = <2>;
+ #size-cells = <2>;
+ dma-noncoherent;
+ ranges;
+
+ bootctl: syscon@0x91102000 {
+ compatible = "syscon";
+ reg = <0x0 0x91102000 0x0 0x1000>;
+ };
+
+ plic: interrupt-controller@f00000000 {
+ compatible = "canaan,k230-plic" ,"thead,c900-plic";
+ reg = <0xf 0x00000000 0x0 0x04000000>;
+ interrupts-extended = <&cpu0_intc 11>, <&cpu0_intc 9>;
+ interrupt-controller;
+ #address-cells = <0>;
+ #interrupt-cells = <2>;
+ riscv,ndev = <208>;
+ };
+
+ clint: timer@f04000000 {
+ compatible = "canaan,k230-clint", "thead,c900-clint";
+ reg = <0xf 0x04000000 0x0 0x00010000>;
+ interrupts-extended = <&cpu0_intc 3>, <&cpu0_intc 7>;
+ };
+
+ uart0: serial@91400000 {
+ compatible = "snps,dw-apb-uart";
+ reg = <0x0 0x91400000 0x0 0x1000>;
+ clocks = <&apb_clk>;
+ interrupts = <16 IRQ_TYPE_LEVEL_HIGH>;
+ reg-io-width = <4>;
+ reg-shift = <2>;
+ status = "disabled";
+ };
+
+ uart1: serial@91401000 {
+ compatible = "snps,dw-apb-uart";
+ reg = <0x0 0x91401000 0x0 0x1000>;
+ clocks = <&apb_clk>;
+ interrupts = <17 IRQ_TYPE_LEVEL_HIGH>;
+ reg-io-width = <4>;
+ reg-shift = <2>;
+ status = "disabled";
+ };
+
+ uart2: serial@91402000 {
+ compatible = "snps,dw-apb-uart";
+ reg = <0x0 0x91402000 0x0 0x1000>;
+ clocks = <&apb_clk>;
+ interrupts = <18 IRQ_TYPE_LEVEL_HIGH>;
+ reg-io-width = <4>;
+ reg-shift = <2>;
+ status = "disabled";
+ };
+
+ uart3: serial@91403000 {
+ compatible = "snps,dw-apb-uart";
+ reg = <0x0 0x91403000 0x0 0x1000>;
+ clocks = <&apb_clk>;
+ interrupts = <19 IRQ_TYPE_LEVEL_HIGH>;
+ reg-io-width = <4>;
+ reg-shift = <2>;
+ status = "disabled";
+ };
+
+ uart4: serial@91404000 {
+ compatible = "snps,dw-apb-uart";
+ reg = <0x0 0x91404000 0x0 0x1000>;
+ clocks = <&apb_clk>;
+ interrupts = <20 IRQ_TYPE_LEVEL_HIGH>;
+ reg-io-width = <4>;
+ reg-shift = <2>;
+ status = "disabled";
+ };
+
+ usb0: usb@91500000 {
+ compatible = "canaan,k230-otg", "snps,dwc2";
+ reg = <0x0 0x91500000 0x0 0x40000>;
+ interrupts = <173 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clk_dummy>;
+ clock-names = "otg";
+ g-rx-fifo-size = <512>;
+ g-np-tx-fifo-size = <64>;
+ g-tx-fifo-size = <512 1024 64 64 64 64>;
+ status = "disabled";
+ };
+
+ usb1: usb@91540000 {
+ compatible = "canaan,k230-otg", "snps,dwc2";
+ reg = <0x0 0x91540000 0x0 0x40000>;
+ interrupts = <174 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clk_dummy>;
+ clock-names = "otg";
+ g-rx-fifo-size = <512>;
+ g-np-tx-fifo-size = <64>;
+ g-tx-fifo-size = <512 1024 64 64 64 64>;
+ status = "disabled";
+ };
+ };
+};