u-boot.git/arch/riscv/dts, branch main

board: sophgo: add support for Milk-V Duo 256M

2026-08-05T18:13:19Z

Add U-Boot support for Milk-V Duo 256M. This board has a different SoC compared to the Milk-V Duo 64M, it uses the Sophgo SG2002 instead of the Sophgo CV1800B. Both SoCs share many common IP blocks, so this board reuses the existing cv1800b CPU support. The board shares the same 'board.c' with Milk-V Duo 64MB (CV1800B), so use the same file for now. Link: https://milkv.io/docs/duo/getting-started/duo256m Signed-off-by: Hiago De Franco Acked-by: Leo Yu-Chi Liang

riscv: dts: cv18xx: fix spi node name

2026-07-27T02:39:21Z

Fix warning: arch/riscv/dts/cv18xx.dtsi:208.26-216.5: Warning (spi_bus_bridge): /soc/spi-nor@10000000: node name for SPI buses should be 'spi' Signed-off-by: Hiago De Franco

riscv: binman: Always set default configuration in FIT image

2026-07-21T09:16:02Z

When CONFIG_MULTI_DTB_FIT is enabled, the FIT image contains multiple device tree configurations for different boards. The default configuration must be explicitly set to ensure the FIT framework traverses all available configurations instead of falling back to CONFIG_DEFAULT_DEVICE_TREE. Without this default property, fit_find_config_node() will use CONFIG_DEFAULT_DEVICE_TREE as the configuration name to match. This prevents the SPL from correctly selecting the appropriate DTB based on runtime board detection (e.g., from EEPROM). Remove the conditional guard so that "default = conf-1" is always present in the FIT image, regardless of CONFIG_MULTI_DTB_FIT. Signed-off-by: Raymond Mao Signed-off-by: Guodong Xu

spl: k1: enable SPI NOR flash detection and boot

2026-07-21T09:16:01Z

Add nor_early_init() to probe the QSPI controller and SPI NOR flash in SPL. Switch spl_boot_device() to BOOT_DEVICE_SPI so the board boots from SPI flash. Change the default device tree to k1-musepi-pro, whose u-boot overlay already defines the QSPI controller and flash node with bootph-pre-ram markers. Enable the required SPI driver model and flash config options. Signed-off-by: Guodong Xu

board: k1: enable pmic in spl

2026-07-21T09:12:53Z

Add Spacemit P1 SoC support in SPL. And set the default voltage for BUCKs and LDOs. Also update MAINTAINERS: add Guodong Xu as co-maintainer, list the u-boot-spacemit mailing list, register the new K1 driver files (i2c, PMIC, regulator), and fix a pre-existing '@@' typo in Huan Zhou's email. Fixes: 1cd239f44438 ("riscv: spacemit: bananapi_f3: initial support added") Signed-off-by: Raymond Mao Signed-off-by: Guodong Xu Tested-by: Songsong Zhang

spacemit: k1: Add DDR firmware support to SPL

2026-07-21T08:57:14Z

Include DDR initialization firmware in the SPL image. The firmware path can be specified via the DDR_FW_FILE environment variable. If the firmware is not found, an empty placeholder file is created to allow the build to proceed without DDR initialization support. Signed-off-by: Raymond Mao Signed-off-by: Guodong Xu Tested-by: Songsong Zhang

spacemit: k1: add TLV EEPROM support in SPL

2026-07-21T08:57:13Z

And support for required components including clock, I2C controller, and I2C EEPROM. Signed-off-by: Raymond Mao Signed-off-by: Guodong Xu Tested-by: Songsong Zhang

dts: k1: enable clocks in SPL

2026-07-21T08:57:13Z

Make the K1 clock controllers visible to SPL by tagging the four root fixed clocks (osc_32k, vctcxo_{1,3,24}m) and the four syscon nodes (mpmu, pll, apmu, apbc) with bootph-pre-ram in the BPI-F3 U-Boot overlay. Signed-off-by: Raymond Mao Signed-off-by: Guodong Xu Tested-by: Songsong Zhang

spacemit: k1: enable SPL with debug UART

2026-07-21T08:57:13Z

Add SPL support featuring debug UART output for early boot diagnostics on K1 SoC. Signed-off-by: Raymond Mao Signed-off-by: Guodong Xu Tested-by: Songsong Zhang

dts: k1: drop legacy local DT files

2026-07-21T08:31:10Z

The K1 build now consumes the kernel device tree via OF_UPSTREAM. The local copies under arch/riscv/dts/ (k1.dtsi, k1-pinctrl.dtsi, k1-bananapi-f3.dts) are unreachable; remove them. Signed-off-by: Guodong Xu