Sipeed's Lichee PI 4A board is based on T-HEAD's TH1520 SoC which consists of quad core XuanTie C910 CPU, plus one C906 CPU and one E902 CPU.
In this series, the UART, basic device tree, CPU, PLIC are enabled, making it capable of running in serial console mode.
Please note that, we rely on pre shipped vendor u-boot which run in M-Mode to chain load this mainline u-boot either via eMMC storage or from tftp, thus the pinctrl and clock setting are not implemented in this series, which certainly can be improved later accordingly.
Also the device tree is coming from kernel which is submitted by Jisheng Zhang in his patch V2 [1], it's still under review, so may change in the future.
[1] https://lore.kernel.org/all/20230518184541.2627-1-jszhang@kernel.org
Yixun Lan (4): riscv: t-head: licheepi4a: initial support added riscv: dts: t-head: Add basic device tree for Sipeed Lichee PI 4A board configs: th1520_lpi4a_defconfig: Add initial config doc: t-head: lpi4a: document Lichee PI 4A board
arch/riscv/Kconfig | 5 + arch/riscv/dts/Makefile | 1 + arch/riscv/dts/th1520-lichee-module-4a.dtsi | 34 ++ arch/riscv/dts/th1520-lichee-pi-4a.dts | 32 ++ arch/riscv/dts/th1520.dtsi | 435 ++++++++++++++++++++ board/thead/th1520_lpi4a/Kconfig | 42 ++ board/thead/th1520_lpi4a/MAINTAINERS | 7 + board/thead/th1520_lpi4a/Makefile | 5 + board/thead/th1520_lpi4a/board.c | 14 + configs/th1520_lpi4a_defconfig | 82 ++++ doc/board/index.rst | 1 + doc/board/thead/index.rst | 9 + doc/board/thead/lpi4a.rst | 112 +++++ include/configs/th1520_lpi4a.h | 22 + 14 files changed, 801 insertions(+) create mode 100644 arch/riscv/dts/th1520-lichee-module-4a.dtsi create mode 100644 arch/riscv/dts/th1520-lichee-pi-4a.dts create mode 100644 arch/riscv/dts/th1520.dtsi create mode 100644 board/thead/th1520_lpi4a/Kconfig create mode 100644 board/thead/th1520_lpi4a/MAINTAINERS create mode 100644 board/thead/th1520_lpi4a/Makefile create mode 100644 board/thead/th1520_lpi4a/board.c create mode 100644 configs/th1520_lpi4a_defconfig create mode 100644 doc/board/thead/index.rst create mode 100644 doc/board/thead/lpi4a.rst create mode 100644 include/configs/th1520_lpi4a.h