I also have the same problem, did not test out yet but, https://patchwork.ozlabs.org/project/uboot/patch/CACqvRUbw1wg7BL+3XWV4MX=7t9njn6oufc81wz7wfom-1hm...@mail.gmail.com/
seems related, i can also confirm the ESD relevance. When I touch some metal groud, issue gets worsened. Uart shows below on hang: U-Boot SPL 2022.10 (Oct 22 2022 - 18:54:33 +0200) DRAM: 1024 MiB 29 Eylül 2022 Perşembe tarihinde saat 16:02:34 UTC+2 itibarıyla fusibr...@gmail.com şunları yazdı: > *DRAM_CLK* seems to affect this. Reducing to say 432 lets the board boot > about 70% of the time. > > The hang seems to be coming from the *spl_load_image *function defined in > common/spl/spl.c, with the SPL sometimes failing to load the U-boot image. > > Could this be an issue with MMC controller timings ?? Looking at the A33 > and R16 user manuals show the Physical Layer Spec for the former is Ver3.00 > that for the latter is Ver2.00. Maybe this explains why the boot on the R16 > never hangs. My current knowledge of MMC controllers is still ~nil to be > able to read the specs and comprehend the difference. > > Brandon. > > On Thursday, September 22, 2022 at 11:08:32 AM UTC+1 Cheo Fusi wrote: > >> Hi Simon, >> >> Did you finally solve this issue?? I have the same problem with the M2M >> variant that has no eMMC chip. The same image works well with the variant >> that includes the eMMC. >> >> Brandon >> On Tuesday, November 30, 2021 at 3:09:21 PM UTC+1 simon...@gmail.com >> wrote: >> >>> Hi, >>> >>> I'm trying to get a banana pi M2M working on a slightly more recent >>> version of the kernel than the 3.4 that's provided. I got some things >>> working but u-boot isn't reliably booting from the sd card. It sometimes >>> works but it mostly hangs after displaying the DRAM message (as shown below) >>> >>> ``` >>> U-Boot SPL 2022.01-rc3 (Nov 30 2021 - 10:46:41 +0000) >>> DRAM: 512 MiB >>> >>> <pressed reset> >>> >>> U-Boot SPL 2022.01-rc3 (Nov 30 2021 - 10:46:41 +0000) >>> DRAM: 512 MiB >>> >>> <pressed reset> >>> >>> U-Boot SPL 2022.01-rc3 (Nov 30 2021 - 10:46:41 +0000) >>> DRAM: 512 MiB >>> >>> <pressed reset> >>> >>> U-Boot SPL 2022.01-rc3 (Nov 30 2021 - 10:46:41 +0000) >>> DRAM: 512 MiB >>> >>> <pressed reset> >>> >>> U-Boot SPL 2022.01-rc3 (Nov 30 2021 - 10:46:41 +0000) >>> DRAM: 512 MiB >>> >>> <pressed reset> >>> >>> U-Boot SPL 2022.01-rc3 (Nov 30 2021 - 10:46:41 +0000) >>> DRAM: 512 MiB >>> >>> <pressed reset> >>> >>> U-Boot SPL 2022.01-rc3 (Nov 30 2021 - 10:46:41 +0000) >>> DRAM: 512 MiB >>> Trying to boot from MMC1 >>> >>> >>> U-Boot 2022.01-rc3 (Nov 30 2021 - 10:46:41 +0000) Allwinner Technology >>> >>> CPU: Allwinner A33 (SUN8I 1667) >>> Model: BananaPi M2 Magic >>> DRAM: 512 MiB >>> WDT: Not starting watchdog@1c20ca0 >>> MMC: mmc@1c0f000: 0, mmc@1c10000: 1, mmc@1c11000: 2 >>> ``` >>> >>> Looking through the wiki https://linux-sunxi.org/U-Boot it looks like >>> it could be because of the device tree, but considering it's booting some >>> times I don't think this is the issue? It looks like SPL is always working >>> but it's often failing to pass to u-boot proper. >>> >>> Any pointers on what could be wrong here? >>> >>> Has anyone got a bananapi m2m or similar working well with a recent >>> kernel? I managed to get SPI working fine (i might submit a patch) but so >>> far I haven't managed to get wifi working (a bit stuck on that) and I >>> haven't looked much beyond that. >>> >>> Best regards, >>> Simon >>> >> -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to linux-sunxi+unsubscr...@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/linux-sunxi/6e089030-1183-4a48-8012-27f99aa3d48cn%40googlegroups.com.
