Hi FUKAUMI, Quentin. Thanks for your help.
On Mon, 1 Dec 2025 at 22:50, FUKAUMI Naoki <[email protected]> wrote: > > Hi Anand, > > On 12/2/25 02:09, Anand Moon wrote: > > Hi Quentin/ FUKAUMI, > > > > On Mon, 1 Dec 2025 at 16:12, Quentin Schulz <[email protected]> > > wrote: > >>> U-Boot TPL 2025.10-1 (Oct 31 2025 - 11:12:15) > >>> lpddr4_set_rate: change freq to 400MHz 0, 1 > >>> Channel 0: LPDDR4, 400MHz > >>> BW=32 Col=10 Bk=8 CS0 Row=15 CS1 Row=15 CS=2 Die BW=16 Size=2048MB > >>> Channel 1: LPDDR4, 400MHz > >>> BW=32 Col=10 Bk=8 CS0 Row=15 CS1 Row=15 CS=2 Die BW=16 Size=2048MB > >>> 256B stride > >>> lpddr4_set_rate: change freq to 800MHz 1, 0 > >>> Trying to boot from BOOTROM > >>> Returning to boot ROM... > >>> > >>> U-Boot SPL 2025.10-1 (Oct 31 2025 - 11:12:15 +0000) > >>> Trying to boot from MMC1 > >> > >> I believe this means you booted from eMMC. (MMC2 should be SD card as > >> far as I remember) > >> > >> When you boot from SPI flash, you should see "Trying to boot from SPI" > >> first, if it fails then it'll try to boot from eMMC and then SD card. > >> This is due to > >> > >> u-boot,spl-boot-order = "same-as-spl", &sdhci, &sdmmc; > >> > >> in arch/arm/dts/rk3399-u-boot.dtsi + SPL_SPI* symbols in your .config. > >> > >>> ## Checking hash(es) for config config-1 ... OK > >>> ## Checking hash(es) for Image atf-1 ... sha256+ OK > >>> ## Checking hash(es) for Image u-boot ... sha256+ OK > >>> ## Checking hash(es) for Image fdt-1 ... sha256+ OK > >>> ## Checking hash(es) for Image atf-2 ... sha256+ OK > >>> ## Checking hash(es) for Image atf-3 ... sha256+ OK > >>> ## Checking hash(es) for Image atf-4 ... sha256+ OK > >>> load_simple_fit: Skip load 'atf-5': image size is 0! > >>> > >>> > >>> U-Boot 2025.10-1 (Oct 31 2025 - 11:12:15 +0000) > >>> > >>> SoC: Rockchip rk3399 > >>> Reset cause: POR > >>> Model: Radxa ROCK Pi 4A > >>> DRAM: 4 GiB (total 3.9 GiB) > >>> PMIC: RK808 > >>> > >>> You see, I could not control the UART with the key pressed. > >> > >> Because you don't have the audio-supply patch for this U-Boot maybe? Or > >> you didn't actually flash your newly compiled U-Boot on the device this > >> U-Boot loads from. > >> > > My board’s SPI flash is running an outdated firmware that lacks the > > auto-supply patch. > > which results in the UART console being locked > > As Quentin said, your board is booted from eMMC. This is why "kill SPI > flash" didn't work. > > Please try to erase eMMC, e.g. `blkdiscard /dev/mmcblk0` on Linux. > > Or, please make & insert bootable SD and press & hold maskrom button > (i.e. kill eMMC) while power on. I had tried this process earlier, but if did not work > After installing a fresh new OS and recompiling the latest kernel I have finally been able to get the SPI flash to detect in userspace I just used your audio-supply patch to get this working. alarm@rockpi4b:~$ sudo mtdinfo Count of MTD devices: 1 Present MTD devices: mtd0 Sysfs interface supported: yes alarm@rockpi4b:~$ cat /proc/mtd dev: size erasesize name mtd0: 00400000 00001000 "spi1.0" alarm@rockpi4b:~$ alarm@rockpi4b:~$ sudo flash_eraseall /dev/mtd0 flash_eraseall has been replaced by `flash_erase <mtddev> 0 0`; please use it Erasing 4096 Kibyte @ 0 -- 100 % complete alarm@rockpi4b:~$ alarm@rockpi4b:~$ sudo flash_erase /dev/mtd0 0 1024 [sudo] password for alarm: Erasing 4096 Kibyte @ 0 -- 100 % complete But this command did not erase the SPI flash completely After running the following command, I can flash the image to SPI flash. alarm@rockpi4b:~/u-boot-rpi4$ sudo flashcp u-boot-rockchip-spi.bin /dev/mtd0 alarm@rockpi4b:~/u-boot-rpi4$ re ----- U-Boot TPL 2026.01-rc3-00080-gc589cff7dc5c (Dec 03 2025 - 11:23:01) lpddr4_set_rate: change freq to 400MHz 0, 1 Channel 0: LPDDR4, 400MHz BW=32 Col=10 Bk=8 CS0 Row=15 CS1 Row=15 CS=2 Die BW=16 Size=2048MB Channel 1: LPDDR4, 400MHz BW=32 Col=10 Bk=8 CS0 Row=15 CS1 Row=15 CS=2 Die BW=16 Size=2048MB 256B stride lpddr4_set_rate: change freq to 800MHz 1, 0 Trying to boot from BOOTROM Returning to boot ROM... U-Boot SPL 2026.01-rc3-00080-gc589cff7dc5c (Dec 03 2025 - 11:23:01 +0530) Trying to boot from SPI ## Checking hash(es) for config config-1 ... OK ## Checking hash(es) for Image atf-1 ... sha256+ OK ## Checking hash(es) for Image u-boot ... sha256+ OK ## Checking hash(es) for Image fdt-1 ... sha256+ OK ## Checking hash(es) for Image atf-2 ... sha256+ OK ## Checking hash(es) for Image atf-3 ... sha256+ OK ## Checking hash(es) for Image atf-4 ... sha256+ OK load_simple_fit: Skip load 'atf-5': image size is 0! U-Boot 2026.01-rc3-00080-gc589cff7dc5c (Dec 03 2025 - 11:23:01 +0530) SoC: Rockchip rk3399 Reset cause: RST Model: Radxa ROCK Pi 4A DRAM: 4 GiB (total 3.9 GiB) PMIC: RK808 Core: 306 devices, 34 uclasses, devicetree: separate MMC: mmc@fe320000: 1, mmc@fe330000: 0 Loading Environment from MMC... Reading from MMC(0)... *** Warning - bad CRC, using default environment In: serial,usbkbd Out: serial,vidconsole Err: serial,vidconsole Model: Radxa ROCK Pi 4A Net: eth0: ethernet@fe300000 Hit any key to stop autoboot: 0 Scanning for bootflows in all bootdevs Seq Method State Uclass Part Name Filename --- ----------- ------ -------- ---- ------------------------ ---------------- Thanks for your support and guidance. -Anand
