Adam 0 Posted June 14, 2022 I noticed that at some point of the TinkerBoard 2 start-up, the uboot log starts getting corrupted and continue to be like that until later the kernel initialise some serial devices when it gets back to normal. Does anyone have an idea what is causing this and how to fix it? I'm running the latest Debian image Tinker_Board_2-Debian-Buster-v2.0.4-20211222 but also tried v2.0.3 with the same result. Set GPIO2_A4 (MASK_RELEASE) output high no mmc device at slot 1 Found IDB in SDcard dwmmc@fe320000: 1 (SD), sdhci@fe330000: 0 Bootdev(atags): mmc 1 MMC1: Legacy, 50Mhz PartType: EFI boot mode: None Found DTB in boot part DTB: rk-kernel.dtb HASH(c): OK I2c0 speed: 400000Hz PMIC: RK8 0 vdd_center 900000uV vdd_c`u_l9 uV vdd_log9 uV Model:SUSTinkerBoard2/2S read_bm`_header:gets`lash`artitionfail. load_bm`_logo424dbit_count=8width=258height=94file_size=2d4 Rockchi`UBOOTDRMdriverversion:v1. .1 CLK:(uboot.arml:enter816 KHz,init816 KHz,kernel N/) CLK:(uboot.armb:enter816 KHz,init816 KHz,kernel N/) a`lll816 KHz a`llb816 KHz d`ll856 KHz c`ll24 KHz g`ll8 KHz n`ll6 KHz v`ll24 KHz aclk_`erih`133333KHz hclk_`erih`66666KHz `clk_`erih`33333KHz aclk_`eril` 266666KHz hclk_`eril` 88888KHz `clk_`eril` 44444KHz hclk_`eril`11 KHz `clk_`eril`15 KHz Net:rk3399_gmac_set_clk:internalclockisUNIM@LEMENTED Noethernetfound. Hitkeytosto`autoboot('CTR +1'2:3 NDROID:rebootreason:"(none)" **Filenotfoundcmdline.txt** [cmdline]do_ext2loadfail cmdline.txtvalid= **Filenotfoundconfig.txt** [conf]do_ext2loadfail config.txtvalid= fdtmagicnumberedfe dd fdtsize1 48576 o`teea`irevision:2. TEEC:Waring:Couldnotfindsecurity`artition Share this post Link to post Share on other sites
tooz 53 Posted June 23, 2022 hello @Adam, we've tried to reproduce the issue with debian 10 v.2.0.3 and v.2.0.4 but it didn't occur in both os versions. is the serial frequency set to 115200? if so, perhaps there's something happened during the flash, or the sigal of cable isn't stable. we'd suggest to 1. reflash the image and/or 2. use another cable and try if it fixes the problem. Share this post Link to post Share on other sites
Adam 0 Posted June 29, 2022 hi @tooz Please take a look at direct capture of console tx line from tinkerboard. The logic analyser is set to decode UART at 115200bps and it decodes correctly at the beginning of the boot (see image #1) then it goes wrong (image #2) and goes back to correct (image #3) It looks like the UART clock if drifting away causing character and frame errors. This problem exists in all 3 tinkerboard2 units we have and with different debian images (2.0.3 and 2.0.4). #1 #2 #3 Share this post Link to post Share on other sites
Adam 0 Posted June 30, 2022 Also, below is a similar topic, so the problem seems to be common. Share this post Link to post Share on other sites
