riscv: dts: sophgo: add initial CV1800B SoC device tree

Add initial device tree for the CV1800B RISC-V SoC by SOPHGO.

Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Acked-by: Chen Wang <unicorn_wang@outlook.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>

diff --git a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi b/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
new file mode 100644 (file)
index 0000000..df40e87
--- /dev/null
+++ b/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
@@ -0,0 +1,123 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright (C) 2023 Jisheng Zhang <jszhang@kernel.org>
+ */
+
+#include <dt-bindings/interrupt-controller/irq.h>
+
+/ {
+       compatible = "sophgo,cv1800b";
+       #address-cells = <1>;
+       #size-cells = <1>;
+
+       cpus: cpus {
+               #address-cells = <1>;
+               #size-cells = <0>;
+               timebase-frequency = <25000000>;
+
+               cpu0: cpu@0 {
+                       compatible = "thead,c906", "riscv";
+                       device_type = "cpu";
+                       reg = <0>;
+                       d-cache-block-size = <64>;
+                       d-cache-sets = <512>;
+                       d-cache-size = <65536>;
+                       i-cache-block-size = <64>;
+                       i-cache-sets = <128>;
+                       i-cache-size = <32768>;
+                       mmu-type = "riscv,sv39";
+                       riscv,isa = "rv64imafdc";
+                       riscv,isa-base = "rv64i";
+                       riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "zicntr", "zicsr",
+                                              "zifencei", "zihpm";
+
+                       cpu0_intc: interrupt-controller {
+                               compatible = "riscv,cpu-intc";
+                               interrupt-controller;
+                               #address-cells = <0>;
+                               #interrupt-cells = <1>;
+                       };
+               };
+       };
+
+       osc: oscillator {
+               compatible = "fixed-clock";
+               clock-output-names = "osc_25m";
+               #clock-cells = <0>;
+       };
+
+       soc {
+               compatible = "simple-bus";
+               interrupt-parent = <&plic>;
+               #address-cells = <1>;
+               #size-cells = <1>;
+               dma-noncoherent;
+               ranges;
+
+               uart0: serial@4140000 {
+                       compatible = "snps,dw-apb-uart";
+                       reg = <0x04140000 0x100>;
+                       interrupts = <44 IRQ_TYPE_LEVEL_HIGH>;
+                       clocks = <&osc>;
+                       reg-shift = <2>;
+                       reg-io-width = <4>;
+                       status = "disabled";
+               };
+
+               uart1: serial@4150000 {
+                       compatible = "snps,dw-apb-uart";
+                       reg = <0x04150000 0x100>;
+                       interrupts = <45 IRQ_TYPE_LEVEL_HIGH>;
+                       clocks = <&osc>;
+                       reg-shift = <2>;
+                       reg-io-width = <4>;
+                       status = "disabled";
+               };
+
+               uart2: serial@4160000 {
+                       compatible = "snps,dw-apb-uart";
+                       reg = <0x04160000 0x100>;
+                       interrupts = <46 IRQ_TYPE_LEVEL_HIGH>;
+                       clocks = <&osc>;
+                       reg-shift = <2>;
+                       reg-io-width = <4>;
+                       status = "disabled";
+               };
+
+               uart3: serial@4170000 {
+                       compatible = "snps,dw-apb-uart";
+                       reg = <0x04170000 0x100>;
+                       interrupts = <47 IRQ_TYPE_LEVEL_HIGH>;
+                       clocks = <&osc>;
+                       reg-shift = <2>;
+                       reg-io-width = <4>;
+                       status = "disabled";
+               };
+
+               uart4: serial@41c0000 {
+                       compatible = "snps,dw-apb-uart";
+                       reg = <0x041c0000 0x100>;
+                       interrupts = <48 IRQ_TYPE_LEVEL_HIGH>;
+                       clocks = <&osc>;
+                       reg-shift = <2>;
+                       reg-io-width = <4>;
+                       status = "disabled";
+               };
+
+               plic: interrupt-controller@70000000 {
+                       compatible = "sophgo,cv1800b-plic", "thead,c900-plic";
+                       reg = <0x70000000 0x4000000>;
+                       interrupts-extended = <&cpu0_intc 11>, <&cpu0_intc 9>;
+                       interrupt-controller;
+                       #address-cells = <0>;
+                       #interrupt-cells = <2>;
+                       riscv,ndev = <101>;
+               };
+
+               clint: timer@74000000 {
+                       compatible = "sophgo,cv1800b-clint", "thead,c900-clint";
+                       reg = <0x74000000 0x10000>;
+                       interrupts-extended = <&cpu0_intc 3>, <&cpu0_intc 7>;
+               };
+       };
+};