riscv: dts: sophgo: add device tree for LicheeRV Nano

Import a slightly modified version of the LicheeRV Nano and SG2002
device trees from the Linux Kernel. The current supported IPs are UART,
MMC, Timer, PLIC and CLINT.

Signed-off-by: Thomas Bonnefille <[email protected]>

diff --git a/arch/riscv/dts/Makefile b/arch/riscv/dts/Makefile
index de356584bf1e54497b36020b53d840c634f7dfc0..e054968e4398e709478f605705896670668c737d 100644 (file)
--- a/arch/riscv/dts/Makefile
+++ b/arch/riscv/dts/Makefile
@@ -2,6 +2,7 @@
 
 dtb-$(CONFIG_TARGET_ANDES_AE350) += ae350_32.dtb ae350_64.dtb
 dtb-$(CONFIG_TARGET_MILKV_DUO) += cv1800b-milkv-duo.dtb
+dtb-$(CONFIG_TARGET_LICHEERV_NANO) += sg2002-licheerv-nano-b.dtb
 dtb-$(CONFIG_TARGET_QEMU_VIRT) += qemu-virt32.dtb qemu-virt64.dtb
 dtb-$(CONFIG_TARGET_OPENPITON_RISCV64) += openpiton-riscv64.dtb
 dtb-$(CONFIG_TARGET_SIFIVE_UNLEASHED) += hifive-unleashed-a00.dtb

diff --git a/arch/riscv/dts/sg2002-licheerv-nano-b.dts b/arch/riscv/dts/sg2002-licheerv-nano-b.dts
new file mode 100644 (file)
index 0000000..9871a75
--- /dev/null
+++ b/arch/riscv/dts/sg2002-licheerv-nano-b.dts
@@ -0,0 +1,45 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright (C) 2024 Thomas Bonnefille <[email protected]>
+ */
+
+/dts-v1/;
+
+#include "sg2002.dtsi"
+
+/ {
+       model = "LicheeRV Nano B";
+       compatible = "sipeed,licheerv-nano-b", "sipeed,licheerv-nano", "sophgo,sg2002";
+
+       aliases {
+               gpio0 = &gpio0;
+               gpio1 = &gpio1;
+               gpio2 = &gpio2;
+               gpio3 = &gpio3;
+               serial0 = &uart0;
+               serial1 = &uart1;
+               serial2 = &uart2;
+               serial3 = &uart3;
+               serial4 = &uart4;
+       };
+
+       chosen {
+               stdout-path = "serial0:115200n8";
+       };
+};
+
+&osc {
+       clock-frequency = <25000000>;
+};
+
+&sdhci0 {
+       status = "okay";
+       bus-width = <4>;
+       no-1-8-v;
+       no-mmc;
+       no-sdio;
+};
+
+&uart0 {
+       status = "okay";
+};

diff --git a/arch/riscv/dts/sg2002.dtsi b/arch/riscv/dts/sg2002.dtsi
new file mode 100644 (file)
index 0000000..0f97000
--- /dev/null
+++ b/arch/riscv/dts/sg2002.dtsi
@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright (C) 2024 Thomas Bonnefille <[email protected]>
+ */
+
+/dts-v1/;
+
+#include <dt-bindings/interrupt-controller/irq.h>
+#include "cv18xx.dtsi"
+
+/ {
+       compatible = "sophgo,sg2002";
+
+       memory@80000000 {
+               device_type = "memory";
+               reg = <0x80000000 0x10000000>;
+       };
+};
+
+&plic {
+       compatible = "sophgo,sg2002-plic", "sophgo,cv1800b-plic", "thead,c900-plic";
+};
+
+&clint {
+       compatible = "sophgo,sg2002-plic", "sophgo,cv1800b-clint", "thead,c900-clint";
+};
+
+&clk {
+       compatible = "sophgo,sg2002-clk", "sophgo,cv1800-clk";
+};
+
+&sdhci0 {
+       compatible = "sophgo,sg2002-dwcmshc", "sophgo,cv1800b-dwcmshc";
+};