On Mon, 9 Dec 2024 23:08:19 +0200 Leon Anavi <[email protected]> wrote:
Hi Leon, thanks for the report! > Commit ffb0294 from 12 November 2023 that simplifies early PMIC setup > conditions causes issues on Cubieboard 4 and Merrii A80 Optimus with > Allwinner A80 SoC (sun9i). The commit was introduced with U-Boot 2024.01 > (rc3) and remains as of today. Because of it both of these boards hang at: > > Starting kernel ... That's odd, how do you boot the kernel, exactly? I just tried mainline U-Boot (via FEL), with: => setenv bootargs "console=ttyS0,115200n8 earlycon" => bootz $kernel_addr_r $ramdisk_addr_r:300000 $fdtcontroladdr and it booted fine to the prompt, on a Cubieboard 4 (CC-A80 v1.2). Kernel was some 6.11-rc6 I just had lying around. I also compared the code before and after that patch, the only difference is the order at which DCDC5 gets programmed: before it's after DCDC4, with the patch it's right after DCDC1. The rest looked the same. Booting ffb0294~1 and ffb0294~0 also worked for me, without issues. So can you please describe how you test that, exactly? Please also note we fixed d75fa8c80dcfa in U-Boot (DCDC4/5 typo), and dd36ad71ad6 in the kernel (DCDC5 constraints in the DT). Cheers, Andre > Older U-Boot versions without this commit work fine. As a temporary > solution I reverted commit ffb0294 and this way the boards boot > successfully. I tested this work around on Merrii A80 Optimus with several > U-Boot versions, including with U-Boot 2024.10. > > Lazar, a friend who owns Cubieboard 4, also tested and confirmed his board > boots with U-Boot 2024.10 if this commit has been reverted. > > How to fix this? Is there a known configuration that can be added to > Merrii_A80_Optimus_defconfig and Cubieboard4_defconfig to avoid hanging > with the existing source code from commit ffb0294 ? > > Best regards, > Leon
