Hi FUKAUMI On Sat, 29 Nov 2025 at 15:22, FUKAUMI Naoki <[email protected]> wrote: > > Hi Anand, > > On 11/29/25 16:25, Anand Moon wrote: > > Hi FUKAUMI, > > > > On Sat, 29 Nov 2025 at 10:09, FUKAUMI Naoki <[email protected]> wrote: > >> > >> Hi Anand, > >> > >> On 11/28/25 14:50, Anand Moon wrote: > >>> Hi Heinrich, > >>> > >>>>> Thanks. I am having the same issue with my Radxa Rock Pi 4 B Plus. > >>>>> > >>>>> But I am booting from SPI flash, so I cannot stop this board in the > >>>>> U-Boot prompt. > >>>>> > >>>>> Is there any other way to flash the SPI flash u-boot-rockchip-spi.bin > >>>>> image > >>>>> in the user space to spi flash? using dd coammnd > >>>>> > >>>>> From the schematics, it has W25Q64FWZPIG > >>>>> > >>>>> [1] > >>>>> https://dl.radxa.com/rockpi4/docs/hw/rockpi4/rockpi4_v13_sch_20181112.pdf > >>>>> > >>>>> I have tried to enable SPI flash, but it is not getting detected on > >>>>> the board in userspace. > >>>> > >>>> > >>>> https://wiki2.radxa.com/Rockpi4/dev/usb-install > >>>> has some guidance how to avoid booting from SPI NOR flash. > >>>> > >>> Thanks for your tip. > >>> > >>> I've attempted this method, but it hasn't worked for me. > >>> Could you provide the SPI details for this board so I can map it in > >>> driver code > >>> and from userspace and then attempt to erase or reflash the image? > >>> > >>> on my board > >>> [ 1.282609] mmcblk0boot0: mmc0:0001 SLD64G 4.00 MiB > >>> [ 1.285862] spi-nor spi1.0: unrecognized JEDEC id bytes: ff ff ff ff > >>> ff ff > >> > >> Are you using dts with "audio-supply = <&vcc_3v0>;"? It should fix SPI too. > >> > > Thanks for your tip. > > > > I have applied the patch from FUKAUMI, and now my console output has > > started working > > > >> 1. Make u-boot-rockchip.bin with "audio-supply = <&vcc_3v0>;" > >> 2. Write it to microSD card > >> 3. Insert it > >> 4. Kill SPI flash > >> 5. Boot U-Boot from SD card > >> 6. Revert 4. > >> 7. Try "sf probe" "sf erase" > >> > > Yes, I have tried these steps (4 Kill SPI flash) -> > > I have shortened the SPI1_CLK and GNG in the GPIO header > > But this board first boots from SPI flash, I don't know the reason. > > > > I noticed your patch references the W25Q128. > > Did you get this device detection in userspace? > > > > This output is from your patch. > > => led blue:status off > > => sf probe > > SF: Detected w25q128 with page size 256 Bytes, erase size 4 KiB, total 16 > > MiB > > => led blue:status on > > => sf probe > > jedec_spi_nor flash@0: unrecognized JEDEC id bytes: ff, ff, ff > > Failed to initialize SPI flash at 1:0 (error -2) > > > > Could this explain why I’m unable to detect the device from userspace? > > What happens if you lower the SPI clock? > e.g. > spi-max-frequency = <10000000>; > Thanks for your input, but I have a bad old U-Boot in my SPI chip, which blocks the UART. I need to erase the SPI chip externally or erase the chip from user space.
> Best regards, > > -- > FUKAUMI Naoki > Radxa Computer (Shenzhen) Co., Ltd. > Thanks -Anand
