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@xxxxxxxxxxx> 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@xxxxxxxxxxx> + */ + +/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
