Hi Fabio, On Thu, 2025-12-18 at 23:45 -0300, Fabio Estevam wrote: > Hi, > > I have a custom board based on the Rockchip evb-rv1103 (RV1103B silicon), > booting from SPI-NAND. > > I can successfully boot the vendor Rockchip U-Boot v2017.09 on this board, > from SPI-NAND > > I am currently working on upstreaming U-Boot support for the RV1103B SoC. > My first RFC attempt is available here: > > https://github.com/fabioestevam/u-boot/commits/rv1103/ > > Build steps: > > make evb-rv1103_defconfig > make > > However, I am not yet able to boot U-Boot on the board. At the moment, > the board does not boot and only prints "RKUART". > > My initial plan was to avoid SPL, similar to the evb-rv1108 approach > (described in board/rockchip/evb_rv1108/README). > > Before going further, I would like to ask: > > Is the evb-rv1108 “no SPL” boot flow a valid reference for RV1103B? >
Great to see the RV1103 being upstreamed! I have a Rockchip RV1106 based board, the CoolPi 1B https://www.cool-pi.com/product-category/gateway/cp1b/ which I'd also like to get in upstream linux/u-boot. The downstream kernel/devicetree is at https://github.com/coolpi-george/coolpi-kernel/blob/linux-5.10-gen-rkr8/arch/arm/boot/dts/rv1106-cp1b.dts with defconfig https://github.com/coolpi-george/coolpi-kernel/blob/linux-5.10-gen-rkr8/arch/arm/configs/rv1106_cp1b_defconfig The downstream u-boot is https://github.com/coolpi-george/coolpi-loader/blob/develop/configs/rv1106_coolpicp1b_defconfig I wonder how similar the RV1106 SoC is to the RV1103 you're working on ? I only ask since the RV1106 SoC has a similar prefix to the RV1103. I don't have any other information about the SoC. Cheers! Chris
