[PATCH RFC 09/12] riscv: dts: bouffalolab: Add BL808 SoC

[Kwanghoon Son]

Add the BL808 D0 CPU, PLIC, CLINT and UART3. Leave UART3 disabled for
boards to enable. UART3 connects directly to PLIC source 20; firmware
sets up UART clocks and pins.

Signed-off-by: Kwanghoon Son <asdfkwang at gmail.com>
---
 arch/riscv/boot/dts/bouffalolab/bl808.dtsi | 70 ++++++++++++++++++++++++++++++
 1 file changed, 70 insertions(+)

diff --git a/arch/riscv/boot/dts/bouffalolab/bl808.dtsi b/arch/riscv/boot/dts/bouffalolab/bl808.dtsi
new file mode 100644
index 0000000000000000000000000000000000000000..c739c77960c4578b87fcf2bc096ef7c8cda089bd
--- /dev/null
+++ b/arch/riscv/boot/dts/bouffalolab/bl808.dtsi
@@ -0,0 +1,70 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+
+#include <dt-bindings/interrupt-controller/irq.h>
+
+/ {
+	compatible = "bflb,bl808";
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		cpu0: cpu at 0 {
+			compatible = "thead,c906", "riscv";
+			device_type = "cpu";
+			reg = <0>;
+			mmu-type = "riscv,sv39";
+			riscv,isa = "rv64imafdc";
+			riscv,isa-base = "rv64i";
+			riscv,isa-extensions = "i", "m", "a", "f", "d", "c",
+					       "zicsr", "zifencei", "zicntr", "zihpm";
+
+			cpu0_intc: interrupt-controller {
+				compatible = "riscv,cpu-intc";
+				interrupt-controller;
+				#interrupt-cells = <1>;
+			};
+		};
+	};
+
+	xtal: clock-xtal {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+	};
+
+	soc {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+		interrupt-parent = <&plic>;
+		dma-noncoherent;
+
+		uart3: serial at 30002000 {
+			compatible = "bflb,uart";
+			reg = <0x30002000 0x1000>;
+			interrupts = <20 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&xtal>;
+			clock-names = "baud";
+			status = "disabled";
+		};
+
+		plic: interrupt-controller at e0000000 {
+			compatible = "bflb,bl808-plic", "thead,c900-plic";
+			reg = <0xe0000000 0x04000000>;
+			interrupts-extended = <&cpu0_intc 11>, <&cpu0_intc 9>;
+			interrupt-controller;
+			#address-cells = <0>;
+			#interrupt-cells = <2>;
+			riscv,ndev = <82>;
+		};
+
+		timer at e4000000 {
+			compatible = "bflb,bl808-clint", "thead,c900-clint";
+			reg = <0xe4000000 0xc000>;
+			interrupts-extended = <&cpu0_intc 3>, <&cpu0_intc 7>;
+		};
+	};
+};

-- 
2.47.3