@lex

I am not sure if i understand you correctly, do you mean we can't disable Btrfs due to dependencies (or have Btrfs as a module if possible) in kernel 4.13.12 and above? Unless there have been significant changes from 4.11 to 4.13 but i can see kernel 4.11 there is no raid6 algorithm , so no ~3 secs delay. Sorry if i did not understand, i am doing some research on 4.13 and 4.14 for the H2+.... See cnxsoft kernel log: https://www.cnx-software.com/2017/10/30/nanopi-duo-quick-start-guide-ubuntu-breadboard-mini-shield-msata-ssd/

That's interesting, so disabling BTRFS (or as a module) would speed up boot times by ~2 to 3 secs if Btrfs not in use. Will do some experiments, but i have never used Btfrs.

Good hint, both build with Kernel is 4.13.12 with same defconfig, but u-boot is different, FE u-boot vs Mainline u-boot, that explains a lot. Thanks.

duo, same defconfig, but seems the numbers are higher (faster?) when Jmicron is not detected (maybe wrong DTS), maybe more power available to the board soc, thus faster numbers? [ 0.060968] xor: measuring software checksum speed [ 0.158147] arm4regs : 598.000 MB/sec [ 0.258271] 8regs : 356.400 MB/sec [ 0.358397] 32regs : 364.800 MB/sec [ 0.458522] neon : 605.600 MB/sec [ 0.046909] xor: measuring software checksum speed [ 0.144802] arm4regs : 1260.000 MB/sec [ 0.244866] 8regs : 750.800 MB/sec [ 0.344929] 32regs : 874.800 MB/sec [ 0.444993] neon : 735.200 MB/sec

Out of curiosity, i have two different builds for the same board, burned it to the same sdcard and ran on the same board and the raid6 numbers are twice as fast for one case. Can anyone give some explanation what this numbers mean (if that means something running a SBC with sdcard)? I am curious to know what settings (or wrong settings) would give such a boost on this? Build one: Build two:

+1

@lvmc, You probably know there is no CSI/VFE subsystem in kernel 4.xx , to have full control over DVP interface for OV5640 you should rely on legacy kernel or develop your own subsystem which is... well... overkill. As a start, you could look into ./config/boards and change from a current H2 board config file and modify/add information, since all H2 seems to be very similar with little changes. You just need to find the correct gpio/port pins for the ./config/fex (if legacy). Nora Lee from Foxconn has always provided information when asked, seems to be part of the business, need more information... just ask me. (you get the picture! ) Hope this helps.

I am pretty sure, take a look:

That fixed the issue, reboot and cold boot works!

@tkaiser, Yes, i was talking about BSP, i just got a master degree in manipulating DTB/DTS, no more fex to DTS anymore. Will try and return with your changes.

H3 uses FEX, H5 uses DT, lats time i changed to boot with 504 Mhz kernel complained and printed some errors that it was not set at 672 Mhz, so at least in u-boot DT is working. Maybe BOOT0 is hard-coded at 672 Mhz.

FE suffers the same symptoms, u-boot legacy not. to be precise: u-boot 2014.7 (672 Mhz DRAM and 1008 Mhz SYS_CLK) works u-boot 2017.05 (FE) with previous pos configuration does not always works. last night Armbian u-boot: same symptoms as FE u-boot.

Ok, if someone prepare the u-boot with 504 Mhz and/or 408 Mhz i test here. I posted additional info that could help, 672 Mhz is used in old u-boot ans SYS_CLK is at 1008 Mhz and it just boot fine, i thinl this is relevant. Link to the u-boot changes and i give some feedback. Please dd command to write the u-boot also.

But this issue is on u-boot, isn't?

* First reboot failed on Trying to boot from MMC1 (hung) * Turned off, second boot failed Trying to boot from MMC1 (hung) * Third try is OK * Next reboot failed, same symptom * Turned off and boot failed * next attempt is OK

Ouch, i wasn't... Anyway, here is the log, but i don't think it helps much, but trying to boot from MMC1 (?): Ubuntu 16.04.3 LTS nanopineo2 ttyS0 root@nanopineo2:~# sudo reboot [[0;32m OK [0m] Stopped target Timers. Stopping Authenticate and Authorize Users to Run Privileged Tasks... [[0;32m OK [0m] Stopped target Graphical Interface. [[0;32m OK [0m] Stopped target Multi-User System. Stopping LSB: Advanced IEEE 802.11 management daemon... Stopping LSB: Armbian gathering hardware information... Stopping Unattended Upgrades Shutdown... Stopping LSB: Start NTP daemon... [[0;32m OK [0m] Stopped Session 1 of user root. [[0;32m OK [0m] Stopped User Manager for UID 0. [[0;32m OK [0m] Removed slice User Slice of root. Stopping Login Service... Stopping Permit User Sessions... [[0;32m OK [0m] Stopped Login Service. [[0;32m OK [0m] Stopped Permit User Sessions. [[0;32m OK [0m] Stopped target Remote File Systems. [[0;32m OK [0m] Stopped target Remote File Systems (Pre). [[0;32m OK [0m] Stopped Unattended Upgrades Shutdown. [[0;32m OK [0m] Stopped target Network. Stopping Raise network interfaces... Stopping Network Manager... [[0;32m OK [0m] Stopped LSB: Armbian gathering hardware information. [[0;32m OK [0m] Stopped Raise network interfaces. [[0;32m OK [0m] Stopped Network Manager. Stopping D-Bus System Message Bus... [[0;32m OK [0m] Stopped target Network (Pre). [[0;32m OK [0m] Stopped D-Bus System Message Bus. [[0;32m OK [0m] Stopped target Basic System. [[0;32m OK [0m] Stopped target Paths. [[0;32m OK [0m] Stopped Forward Password Requests to Wall Directory Watch. [[0;32m OK [0m] Stopped Dispatch Password Requests to Console Directory Watch. [[0;32m OK [0m] Stopped target Sockets. [[0;32m OK [0m] Closed Syslog Socket. [[0;32m OK [0m] Stopped target Slices. [[0;32m OK [0m] Removed slice User and Session Slice. [[0;32m OK [0m] Closed D-Bus System Message Bus Socket. [[0;32m OK [0m] Stopped target System Initialization. Stopping Entropy daemon using the HAVEGE algorithm... Stopping Armbian enhanced Log2Ram... Stopping Restore / save the current clock... [[0;32m OK [0m] Stopped target Encrypted Volumes. [[0;32m OK [0m] Stopped target Swap. Deactivating swap /var/swap... [[0;32m OK [0m] Stopped Create Volatile Files and Directories. [[0;32m OK [0m] Stopped Apply Kernel Variables. [[0;32m OK [0m] Stopped Load Kernel Modules. [[0;32m OK [0m] Stopped Entropy daemon using the HAVEGE algorithm. Stopping Load/Save Random Seed... [[0;32m OK [0m] Stopped Restore / save the current clock. [[0;32m OK [0m] Stopped Load/Save Random Seed. [[0;32m OK [0m] Unmounted /var/log. [[0;32m OK [0m] Deactivated swap /var/swap. [[0;32m OK [0m] Unmounted /var/log.hdd. [[0;32m OK [0m] Stopped Armbian enhanced Log2Ram. [[0;32m OK [0m] Stopped target Local File Systems. Unmounting /run/user/0... Unmounting /tmp... [[0;32m OK [0m] Unmounted /run/user/0. [[0;32m OK [0m] Unmounted /tmp. [[0;32m OK [0m] Reached target Unmount All Filesystems. [[0;32m OK [0m] Stopped target Local File Systems (Pre). [[0;32m OK [0m] Stopped Create Static Device Nodes in /dev. [[0;32m OK [0m] Stopped Remount Root and Kernel File Systems. [[0;32m OK [0m] Reached target Shutdown. [ 407.528460] reboot: Restarting system INFO: PSCI Affinity Map: INFO: AffInst: Level 0, MPID 0x0, State ON INFO: AffInst: Level 0, MPID 0x1, State ON INFO: AffInst: Level 0, MPID 0x2, State ON INFO: AffInst: Level 0, MPID 0x3, State ON U-Boot SPL 2017.09-armbian (Oct 31 2017 - 01:49:36) DRAM: 512 MiB Trying to boot from MMC1 U-Boot SPL 2017.09-armbian (Oct 31 2017 - 01:49:36) DRAM: 512 MiB Trying to boot from MMC1 U-Boot SPL 2017.09-armbian (Oct 31 2017 - 01:49:36) DRAM: 512 MiB Trying to boot from MMC1 NOTICE: BL3-1: Running on H5 (1718) in SRAM A2 (@0x44000) NOTICE: Configuring SPC Controller NOTICE: BL3-1: v1.0(debug):aa75c8d NOTICE: BL3-1: Built : 01:49:29, Oct 31 2017 INFO: BL3-1: Initializing runtime services INFO: BL3-1: Preparing for EL3 exit to normal world INFO: BL3-1: Next image address: 0x4a000000, SPSR: 0x3c9 U-Boot 2017.09-armbian (Oct 31 2017 - 01:49:36 +0100) Allwinner Technology CPU: Allwinner H5 (SUN50I) Model: FriendlyARM NanoPi NEO 2 DRAM: 512 MiB MMC: SUNXI SD/MMC: 0 *** Warning - bad CRC, using default environment In: serial Out: serial Err: serial Net: No ethernet found. 230454 bytes read in 157 ms (1.4 MiB/s) starting USB... No controllers found Autoboot in 1 seconds, press <Space> to stop switch to partitions #0, OK mmc0 is current device Scanning mmc 0:1... Found U-Boot script /boot/boot.scr 3100 bytes read in 213 ms (13.7 KiB/s) ## Executing script at 4fc00000 U-boot loaded from SD Boot script loaded from mmc 165 bytes read in 179 ms (0 Bytes/s) 28577 bytes read in 344 ms (81.1 KiB/s) 4179 bytes read in 482 ms (7.8 KiB/s) Applying kernel provided DT fixup script (sun50i-h5-fixup.scr) ## Executing script at 44000000 5253976 bytes read in 584 ms (8.6 MiB/s) 12957704 bytes read in 973 ms (12.7 MiB/s) ## Loading init Ramdisk from Legacy Image at 4fe00000 ... Image Name: uInitrd Image Type: AArch64 Linux RAMDisk Image (gzip compressed) Data Size: 5253912 Bytes = 5 MiB Load Address: 00000000 Entry Point: 00000000 Verifying Checksum ... OK ## Flattened Device Tree blob at 4fa00000 Booting using the fdt blob at 0x4fa00000 Loading Ramdisk to 49afd000, end 49fffb18 ... OK reserving fdt memory region: addr=4fa00000 size=6d000 Loading Device Tree to 0000000049a8d000, end 0000000049afcfff ... OK Starting kernel ... Loading, please wait... starting version 229 Begin: Loading essential drivers ... done. Begin: Running /scripts/init-premount ... done. Begin: Mounting root file system ... Begin: Running /scripts/local-top ... done. Begin: Running /scripts/local-premount ... Scanning for Btrfs filesystems done. Begin: Will now check root file system ... fsck from util-linux 2.27.1 [/sbin/fsck.ext4 (1) -- /dev/mmcblk0p1] fsck.ext4 -a -C0 /dev/mmcblk0p1 /dev/mmcblk0p1: clean, 35895/220416 files, 326978/912384 blocks done. done. Begin: Running /scripts/local-bottom ... done. Begin: Running /scripts/init-bottom ... done. Welcome to [1mUbuntu 16.04.3 LTS[0m! root@nanopineo2:~# sudo shutdown -h now [[0;32m OK [0m] Stopped target Graphical Interface. [[0;32m OK [0m] Stopped target Multi-User System. Stopping OpenBSD Secure Shell server... Stopping Unattended Upgrades Shutdown... Stopping LSB: Advanced IEEE 802.11 management daemon... Stopping User Manager for UID 0... Stopping LSB: disk temperature monitoring daemon... [[0;32m OK [0m] Stopped target Login Prompts. Stopping Serial Getty on ttyS0... [[0;32m OK [0m] St Stopping LSB: Start/stop sysstat's sadc... Stopping LSB: Set sysfs variables from /etc/sysfs.conf... Stopping System Logging Service... [[0;32m OK [0m] Stopped target Timers. [[0;32m OK [0m] Stopped Daily apt upgrade and clean activities. [[0;32m OK [0m] Stopped Serial Getty on ttyGS0. [[0;32m OK [0m] Stopped Daily Cleanup of Temporary Directories. Stopping LSB: Start NTP daemon... Stopping Authenticate and Authorize Users to Run Privileged Tasks... Stopping Getty on tty1... Stopping LSB: Armbian gathering hardware information... Stopping Regular background program processing daemon... [[0;32m OK [0m] Stopped System Logging Service. [[0;32m OK [0m] Stopped Regular background program processing daemon. [[0;32m OK [0m] Stopped Authenticate and Authorize Users to Run Privileged Tasks. [[0;32m OK [0m] Stopped Daily apt download activities. [[0;32m OK [0m] Stopped Getty on tty1. [[0;32m OK [0m] Stopped Serial Getty on ttyS0. [[0;32m OK [0m] Stopped Session 1 of user root. [[0;32m OK [0m] Stopped LSB: Set sysfs variables from /etc/sysfs.conf. Stopping LSB: set CPUFreq kernel parameters... [[0;32m OK [0m] Removed slice system-serial\x2dgetty.slice. [[0;32m OK [0m] Stopped /etc/rc.local Compatibility. [[0;32m OK [0m] Removed slice system-getty.slice. [[0;32m OK [0m] Stopped Daily apt download activities. [[0;32m OK [0m] Stopped target System Time Synchronized. [[0;32m OK [0m] Stopped LSB: set CPUFreq kernel parameters. Stopping LSB: Load kernel modules needed to enable cpufreq scaling... [[0;32m OK [0m] Stopped LSB: Advanced IEEE 802.11 management daemon. [[0;32m OK [0m] Stopped LSB: Start/stop sysstat's sadc. [[0;32m OK [0m] Stopped LSB: disk temperature monitoring daemon. [[0;32m OK [0m] Stopped LSB: Load kernel modules needed to enable cpufreq scaling. [[0;32m OK [0m] Stopped OpenBSD Secure Shell server. [[0;32m OK [0m] Stopped User Manager for UID 0. [[0;32m OK [0m] Removed slice User Slice of root. Stopping Login Service... Stopping Permit User Sessions... [[0;32m OK [0m] Unmounted /run/user/0. [[0;32m OK [0m] Stopped Login Service. [[0;32m OK [0m] Stopped LSB: Start NTP daemon. [[0;32m OK [0m] Stopped target Network is Online. [[0;32m OK [0m] Stopped Network Manager Wait Online. [[0;32m OK [0m] Stopped Permit User Sessions. [[0;32m OK [0m] Stopped target Remote File Systems. [[0;32m OK [0m] Stopped target Remote File Systems (Pre). [[0;32m OK [0m] Stopped LSB: Armbian gathering hardware information. [[0;32m OK [0m] Stopped Unattended Upgrades Shutdown. [[0;32m OK [0m] Stopped target Network. Stopping Raise network interfaces... Stopping Network Manager... [[0;32m OK [0m] Stopped Raise network interfaces. [[0;32m OK [0m] Stopped Network Manager. Stopping D-Bus System Message Bus... [[0;32m OK [0m] Stopped target Network (Pre). [[0;32m OK [0m] Stopped D-Bus System Message Bus. [[0;32m OK [0m] Stopped target Basic System. [[0;32m OK [0m] Stopped target Paths. [[0;32m OK [0m] Stopped Dispatch Password Requests to Console Directory Watch. [[0;32m OK [0m] Stopped Forward Password Requests to Wall Directory Watch. [[0;32m OK [0m] Stopped target Sockets. [[0;32m OK [0m] Closed Syslog Socket. [[0;32m OK [0m] Stopped target Slices. [[0;32m OK [0m] Removed slice User and Session Slice. [[0;32m OK [0m] Closed D-Bus System Message Bus Socket. [[0;32m OK [0m] Stopped target System Initialization. [[0;32m OK [0m] Stopped target Encrypted Volumes. Stopping Armbian enhanced Log2Ram... Stopping Entropy daemon using the HAVEGE algorithm... [[0;32m OK [0m] Stopped Apply Kernel Variables. Stopping Restore / save the current clock... [[0;32m OK [0m] Stopped Load Kernel Modules. [[0;32m OK [0m] Stopped Create Volatile Files and Directories. [[0;32m OK [0m] Stopped target Swap. Deactivating swap /var/swap... [[0;32m OK [0m] Stopped Entropy daemon using the HAVEGE algorithm. Stopping Load/Save Random Seed... [[0;32m OK [0m] Stopped Load/Save Random Seed. [[0;32m OK [0m] Deactivated swap /var/swap. [[0;32m OK [0m] Stopped Restore / save the current clock. [[0;32m OK [0m] Unmounted /var/log. Starting Update UTMP about System Runlevel Changes... [[0;32m OK [0m] Unmounted /var/log.hdd. [[0;32m OK [0m] Stopped Armbian enhanced Log2Ram. [[0;32m OK [0m] Started Update UTMP about System Runlevel Changes. [[0;32m OK [0m] Stopped target Local File Systems. Unmounting /tmp... [[0;32m OK [0m] Unmounted /tmp. [[0;32m OK [0m] Reached target Unmount All Filesystems. [[0;32m OK [0m] Stopped target Local File Systems (Pre). [[0;32m OK [0m] Stopped Create Static Device Nodes in /dev. [[0;32m OK [0m] Stopped Remount Root and Kernel File Systems. [[0;32m OK [0m] Reached target Shutdown. [[0;32m OK [0m] Reached target Final Step. Starting Power-Off... [ 78.439939] reboot: Power down INFO: PSCI Affinity Map: INFO: AffInst: Level 0, MPID 0x0, State ON INFO: AffInst: Level 0, MPID 0x1, State ON INFO: AffInst: Level 0, MPID 0x2, State ON INFO: AffInst: Level 0, MPID 0x3, State ON ERROR: PSCI system shutdown: still alive ... U-Boot SPL 2017.09-armbian (Oct 31 2017 - 01:49:36) DRAM: 512 MiB Trying to boot from MMC1 NOTICE: BL3-1: Running on H5 (1718) in SRAM A2 (@0x44000) NOTICE: Configuring SPC Controller NOTICE: BL3-1: v1.0(debug):aa75c8d NOTICE: BL3-1: Built : 01:49:29, Oct 31 2017 INFO: BL3-1: Initializing runtime services INFO: BL3-1: Preparing for EL3 exit to normal world INFO: BL3-1: Next image address: 0x4a000000, SPSR: 0x3c9 U-Boot 2017.09-armbian (Oct 31 2017 - 01:49:36 +0100) Allwinner Technology CPU: Allwinner H5 (SUN50I) Model: FriendlyARM NanoPi NEO 2 DRAM: 512 MiB MMC: SUNXI SD/MMC: 0 *** Warning - bad CRC, using default environment In: serial Out: serial Err: serial Net: No ethernet found. 230454 bytes read in 157 ms (1.4 MiB/s) starting USB... No controllers found Autoboot in 1 seconds, press <Space> to stop switch to partitions #0, OK mmc0 is current device Scanning mmc 0:1... Found U-Boot script /boot/boot.scr 3100 bytes read in 214 ms (13.7 KiB/s) ## Executing script at 4fc00000 U-boot loaded from SD Boot script loaded from mmc 165 bytes read in 178 ms (0 Bytes/s) 28577 bytes read in 344 ms (81.1 KiB/s) 4179 bytes read in 482 ms (7.8 KiB/s) Applying kernel provided DT fixup script (sun50i-h5-fixup.scr) ## Executing script at 44000000 5253976 bytes read in 582 ms (8.6 MiB/s) 12957704 bytes read in 973 ms (12.7 MiB/s) ## Loading init Ramdisk from Legacy Image at 4fe00000 ... Image Name: uInitrd Image Type: AArch64 Linux RAMDisk Image (gzip compressed) Data Size: 5253912 Bytes = 5 MiB Load Address: 00000000 Entry Point: 00000000 Verifying Checksum ... OK ## Flattened Device Tree blob at 4fa00000 Booting using the fdt blob at 0x4fa00000 Loading Ramdisk to 49afd000, end 49fffb18 ... OK reserving fdt memory region: addr=4fa00000 size=6d000 Loading Device Tree to 0000000049a8d000, end 0000000049afcfff ... OK Starting kernel ... Loading, please wait... starting version 229 Begin: Loading essential drivers ... done. Begin: Running /scripts/init-premount ... done. Begin: Mounting root file system ... Begin: Running /scripts/local-top ... done. Begin: Running /scripts/local-premount ... Scanning for Btrfs filesystems done. Begin: Will now check root file system ... fsck from util-linux 2.27.1 [/sbin/fsck.ext4 (1) -- /dev/mmcblk0p1] fsck.ext4 -a -C0 /dev/mmcblk0p1 /dev/mmcblk0p1: clean, 35908/220416 files, 349681/912384 blocks done. done. Begin: Running /scripts/local-bottom ... done. Begin: Running /scripts/init-bottom ... done. Welcome to [1mUbuntu 16.04.3 LTS[0m! root@nanopineo2:~# sudo shutdown -h now Stopping Hostname Service... Starting Reboot... [ 51.491935] reboot: Restarting system INFO: PSCI Affinity Map: INFO: AffInst: Level 0, MPID 0x0, State ON INFO: AffInst: Level 0, MPID 0x1, State ON INFO: AffInst: Level 0, MPID 0x2, State ON INFO: AffInst: Level 0, MPID 0x3, State ON U-Boot SPL 2017.09-armbian (Oct 31 2017 - 01:49:36) DRAM: 512 MiB Trying to boot from MMC1 U-Boot SPL 2017.09-armbian (Oct 31 2017 - 01:49:36) DRAM: 512 MiB Trying to boot from MMC1 NOTICE: BL3-1: Running on H5 (1718) in SRAM A2 (@0x44000) NOTICE: Configuring SPC Controller NOTICE: BL3-1: v1.0(debug):aa75c8d NOTICE: BL3-1: Built : 01:49:29, Oct 31 2017 INFO: BL3-1: Initializing runtime services INFO: BL3-1: Preparing for EL3 exit to normal world INFO: BL3-1: Next image address: 0x4a000000, SPSR: 0x3c9 U-Boot 2017.09-armbian (Oct 31 2017 - 01:49:36 +0100) Allwinner Technology CPU: Allwinner H5 (SUN50I) Model: FriendlyARM NanoPi NEO 2 DRAM: 512 MiB MMC: SUNXI SD/MMC: 0 *** Warning - bad CRC, using default environment In: serial Out: serial Err: serial Net: No ethernet found. 230454 bytes read in 157 ms (1.4 MiB/s) starting USB... No controllers found Autoboot in 1 seconds, press <Space> to stop switch to partitions #0, OK mmc0 is current device Scanning mmc 0:1... Found U-Boot script /boot/boot.scr 3100 bytes read in 213 ms (13.7 KiB/s) ## Executing script at 4fc00000 U-boot loaded from SD Boot script loaded from mmc 165 bytes read in 178 ms (0 Bytes/s) 28577 bytes read in 344 ms (81.1 KiB/s) 4179 bytes read in 482 ms (7.8 KiB/s) Applying kernel provided DT fixup script (sun50i-h5-fixup.scr) ## Executing script at 44000000 5253976 bytes read in 583 ms (8.6 MiB/s) 12957704 bytes read in 973 ms (12.7 MiB/s) ## Loading init Ramdisk from Legacy Image at 4fe00000 ... Image Name: uInitrd Image Type: AArch64 Linux RAMDisk Image (gzip compressed) Data Size: 5253912 Bytes = 5 MiB Load Address: 00000000 Entry Point: 00000000 Verifying Checksum ... OK ## Flattened Device Tree blob at 4fa00000 Booting using the fdt blob at 0x4fa00000 Loading Ramdisk to 49afd000, end 49fffb18 ... OK reserving fdt memory region: addr=4fa00000 size=6d000 Loading Device Tree to 0000000049a8d000, end 0000000049afcfff ... OK Starting kernel ... Loading, please wait... starting version 229 Begin: Loading essential drivers ... done. Begin: Running /scripts/init-premount ... done. Begin: Mounting root file system ... Begin: Running /scripts/local-top ... done. Begin: Running /scripts/local-premount ... Scanning for Btrfs filesystems done. Begin: Will now check root file system ... fsck from util-linux 2.27.1 [/sbin/fsck.ext4 (1) -- /dev/mmcblk0p1] fsck.ext4 -a -C0 /dev/mmcblk0p1 /dev/mmcblk0p1: clean, 35908/220416 files, 349711/912384 blocks done. done. Begin: Running /scripts/local-bottom ... done. Begin: Running /scripts/init-bottom ... done. Welcome to [1mUbuntu 16.04.3 LTS[0m! root@nanopineo2:~# dmesg|grep mmc [ 1.736605] sunxi-[01;31m[Kmmc[m[K 1c0f000.[01;31m[Kmmc[m[K: Got CD GPIO [ 1.776055] sunxi-[01;31m[Kmmc[m[K 1c0f000.[01;31m[Kmmc[m[K: base:0xffff000008f3b000 irq:7 [ 1.834298] [01;31m[Kmmc[m[K0: host does not support reading read-only switch, assuming write-enable [ 1.837944] [01;31m[Kmmc[m[K0: new high speed SDHC card at address 1234 [ 1.838332] [01;31m[Kmmc[m[Kblk0: [01;31m[Kmmc[m[K0:1234 SA04G 3.68 GiB [ 1.839671] [01;31m[Kmmc[m[Kblk0: p1 [ 2.350241] [01;31m[Kmmc[m[Kblk0: r/w command failed, status = 0x80000900 [ 2.625894] [01;31m[Kmmc[m[Kblk0: r/w command failed, status = 0x80000900 [ 3.127510] EXT4-fs ([01;31m[Kmmc[m[Kblk0p1): mounted filesystem with writeback data mode. Opts: (null) [ 5.025975] EXT4-fs ([01;31m[Kmmc[m[Kblk0p1): re-mounted. Opts: commit=600,errors=remount-ro root@nanopineo2:~#

You are right, i tested their configuration: And surprisingly the same configuration on old u-boot works. Upd: If someone build next image with lower dram clk i can test here.

It happens on manufacturer Image also... I suspect this is the bug but have not done any research... as of the link @zador.blood.stained pointed, neo plus2 is not affected by this "supposed" (or confirmed) bug, at least when i tried some time ago with my experiments.

"Oh dear! Oh my! Oh trouble!!" I think you just found a use case for this: https://github.com/avafinger/H5-firmware

Yes, you need /dev/cedar_dev. Cedrus just make calls to VE enine, thus works with any kernel. http://linux-sunxi.org/VE_Register_guide

Cedrus is built into FFmpeg. I think you should try first libcedrus and to see if you can get video decoding working before. Build and install libcedrus: https://github.com/linux-sunxi/libcedrus Check if you can use MVP with cedrus.

I don't think they will accept this... It is using deprecated functions and is more a hack than anything else , no real benefits for X86 users. Did you run as sudo/root? Can you please try using x264 and see if works? -c:v libx264

The best all around documentation to make AP work... https://wiki.gentoo.org/wiki/Hostapd

Don't try to use FA OV5640 on Opi Extension , you will possibly damage the sensor. The pins are not compatible.