[PATCH v2 7/7] riscv: dts: sophgo: add Huashan Pi board device tree

Inochi Amaoto
2023-10-09T11:29:28Z

Add initial device tree files for the Huashan Pi board.

Note: The boot of CV1812H chip needs a rtos firmware for coprocessor to
function properly. To make the soc happy, reserved the last 2M memory
for the rtos firmware.

Signed-off-by: Inochi Amaoto <inochiama@outlook.com>
Link: https://en.sophgo.com/product/introduce/huashan.html
Link: https://en.sophgo.com/product/introduce/cv181xH.html
Link: https://github.com/milkv-duo/duo-buildroot-sdk/blob/develop/build/boards/cv181x/cv1812h_wevb_0007a_emmc_huashan/memmap.py#L15
---
arch/riscv/boot/dts/sophgo/Makefile | 1 +
.../boot/dts/sophgo/cv1812h-huashan-pi.dts | 48 +++++++++++++++++++
2 files changed, 49 insertions(+)
create mode 100644 arch/riscv/boot/dts/sophgo/cv1812h-huashan-pi.dts

diff --git a/arch/riscv/boot/dts/sophgo/Makefile b/arch/riscv/boot/dts/sophgo/Makefile
index 3fb65512c631..57ad82a61ea6 100644
--- a/arch/riscv/boot/dts/sophgo/Makefile
+++ b/arch/riscv/boot/dts/sophgo/Makefile
@@ -1,3 +1,4 @@
# SPDX-License-Identifier: GPL-2.0
dtb-$(CONFIG_ARCH_SOPHGO) += cv1800b-milkv-duo.dtb
+dtb-$(CONFIG_ARCH_SOPHGO) += cv1812h-huashan-pi.dtb
dtb-$(CONFIG_ARCH_SOPHGO) += sg2042-milkv-pioneer.dtb
diff --git a/arch/riscv/boot/dts/sophgo/cv1812h-huashan-pi.dts b/arch/riscv/boot/dts/sophgo/cv1812h-huashan-pi.dts
new file mode 100644
index 000000000000..aa361f3a86bb
--- /dev/null
+++ b/arch/riscv/boot/dts/sophgo/cv1812h-huashan-pi.dts
@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright (C) 2023 Inochi Amaoto <inochiama@outlook.com>
+ */
+
+/dts-v1/;
+
+#include "cv1812h.dtsi"
+
+/ {
+ model = "Huashan Pi";
+ compatible = "sophgo,huashan-pi", "sophgo,cv1812h";
+
+ aliases {
+ gpio0 = &gpio0;
+ gpio1 = &gpio1;
+ gpio2 = &gpio2;
+ gpio3 = &gpio3;
+ serial0 = &uart0;
+ serial1 = &uart1;
+ serial2 = &uart2;
+ serial3 = &uart3;
+ serial4 = &uart4;
+ };
+
+ chosen {
+ stdout-path = "serial0:115200n8";
+ };
+
+ reserved-memory {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+
+ coprocessor_rtos: region@8fe00000 {
+ reg = <0x8fe00000 0x200000>;
+ no-map;
+ };
+ };
+};
+
+&osc {
+ clock-frequency = <25000000>;
+};
+
+&uart0 {
+ status = "okay";
+};
--
2.42.0