i.MX8M Mini EVK enable HDMI output

[benjamin_krebs]

I am having trouble enabling HDMI output on the i.mx8M mini EVK (8MMINILPD4-EVK).

I am using the MIPI DSI to HDMI converter to connect to an HDMI display.

I have tried booting the preinstalled android and the linux demo image without any luck.

I have consulted both this forum and the latest i.MX Linux User Guide (Rev. L4.14.78-1.0.0_ga, 01/2019).

The user guide lists uboot video bootargs for all i.MX8 but the Mini in section 4.4.1.2 and I have tried using the bootargs for the other processors, also without luck.

Please advice.

[kariviit]

Hi,

I have a same problem. I received  this week two 8MMINILPD4-EVK kits and both of them are not booting to Android out of the box. According to serial terminal they tried to start Android, but booting fails and board reboots itself after a while. I also downloaded a new Android image (android_p9.0.0_1.0.0-ga_image_8mmevk.tar.gz) and I downloaded it to the board using serial download tool. It behaves a similar way and it didn't boot either. 

There seems to be a problem with this pre-built Android image. 

Maybe someone could help me and others?

BR Kari,

Captured bootlog is following: 

U-Boot SPL 2018.03 (Dec 19 2018 - 17:39:10 +0800)
power_bd71837_init
DDRINFO: start lpddr4 ddr init
DRAM PHY training for 3000MTS
check ddr4_pmu_train_imem code
check ddr4_pmu_train_imem code pass
check ddr4_pmu_train_dmem code
check ddr4_pmu_train_dmem code pass
Training PASS
DRAM PHY training for 3000MTS
check ddr4_pmu_train_imem code
check ddr4_pmu_train_imem code pass
check ddr4_pmu_train_dmem code
check ddr4_pmu_train_dmem code pass
Training PASS
DRAM PHY training for 400MTS
check ddr4_pmu_train_imem code
check ddr4_pmu_train_imem code pass
check ddr4_pmu_train_dmem code
check ddr4_pmu_train_dmem code pass
Training PASS
DRAM PHY training for 100MTS
check ddr4_pmu_train_imem code
check ddr4_pmu_train_imem code pass
check ddr4_pmu_train_dmem code
check ddr4_pmu_train_dmem code pass
Training PASS
DDRINFO:ddrphy calibration done
DDRINFO: ddrmix config done
Normal Boot
Trying to boot from MMC2

U-Boot 2018.03 (Dec 19 2018 - 17:39:10 +0800)

CPU: Freescale i.MX8MMQ rev1.0 1800 MHz (running at 1200 MHz)
CPU: Commercial temperature grade (0C to 95C) at 55C
Reset cause: POR
Model: FSL i.MX8MM EVK board
DRAM: 2 GiB
TCPC: Vendor ID [0x1fc9], Product ID [0x5110], Addr [I2C1 0x52]
Power supply on USB2
TCPC: Vendor ID [0x1fc9], Product ID [0x5110], Addr [I2C1 0x50]
MMC: FSL_SDHC: 0, FSL_SDHC: 1
Loading Environment from MMC... *** Warning - bad CRC, using default environment

Failed (-5)
In: serial
Out: serial
Err: serial

BuildInfo:
- ATF d6451cc
- U-Boot 2018.03

flash target is MMC:1
Net:
Warning: ethernet@30be0000 using MAC address from ROM
eth0: ethernet@30be0000
Fastboot: Normal
Normal Boot
Hit any key to stop autoboot: 0
verify OK, boot 'boot_a'
Kernel load addr 0x40480000 size 30737 KiB
kernel @ 40480000 (31474176)
ramdisk @ 43600000 (7425471)
fdt @ 43400000 (43646)
## Flattened Device Tree blob at 43400000
Booting using the fdt blob at 0x43400000
Using Device Tree in place at 0000000043400000, end 000000004340da7d

Starting kernel ...

[ 0.000000] Booting Linux on physical CPU 0x0
[ 0.000000] Linux version 4.14.78 (bamboo@szandroidmpu-PowerEdge-T430) (gcc version 4.9.x 20150123 (prerelease) (GCC)) #1 SMP PREEMPT Wed Dec 19 17:42:18 CST 2018
[ 0.000000] Boot CPU: AArch64 Processor [410fd034]
[ 0.000000] Machine model: FSL i.MX8MM EVK board
[ 0.000000] earlycon: ec_imx6q0 at MMIO 0x0000000030890000 (options '115200')
[ 0.000000] bootconsole [ec_imx6q0] enabled
[ 0.000000] efi: Getting EFI parameters from FDT:
[ 0.000000] efi: UEFI not found.
[ 0.000000] cma: Reserved 800 MiB at 0x0000000086000000
[ 0.000000] NUMA: No NUMA configuration found
[ 0.000000] NUMA: Faking a node at [mem 0x0000000000000000-0x00000000bfffffff]
[ 0.000000] NUMA: NODE_DATA [mem 0xbffbc900-0xbffbe6ff]
[ 0.000000] Zone ranges:
[ 0.000000] DMA [mem 0x0000000040000000-0x00000000bfffffff]
[ 0.000000] Normal empty
[ 0.000000] Movable zone start for each node
[ 0.000000] Early memory node ranges
[ 0.000000] node 0: [mem 0x0000000040000000-0x00000000b7ffffff]
[ 0.000000] node 0: [mem 0x00000000b8400000-0x00000000bfffffff]
[ 0.000000] Initmem setup node 0 [mem 0x0000000040000000-0x00000000bfffffff]
[ 0.000000] psci: probing for conduit method from DT.
[ 0.000000] psci: PSCIv1.1 detected in firmware.
[ 0.000000] psci: Using standard PSCI v0.2 function IDs
[ 0.000000] psci: MIGRATE_INFO_TYPE not supported.
[ 0.000000] psci: SMC Calling Convention v1.1
[ 0.000000] random: get_random_bytes called from start_kernel+0xa8/0x414 with crng_init=0
[ 0.000000] percpu: Embedded 25 pages/cpu @ffff80007ff52000 s64792 r8192 d29416 u102400
[ 0.000000] Detected VIPT I-cache on CPU0
[ 0.000000] CPU features: enabling workaround for ARM erratum 845719
[ 0.000000] Speculative Store Bypass Disable mitigation not required
[ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 515072
[ 0.000000] Policy zone: DMA
[ 0.000000] Kernel command line: console=ttymxc1,115200 earlycon=ec_imx6q,0x30890000,115200 init=/init androidboot.console=ttymxc1 androidboot.hardware=freescale cma=800M androidboot.primary_display=imx-drm firmware_class.path=/vendor/firmware transparent_hugepage=never buildvariant=userdebug androidboot.serialno=2b13320a5c85d94a androidboot.btmacaddr=2b:13:32:0a:5c:85 androidboot.soc_type=imx8mm androidboot.storage_type=emmc androidboot.boottime=1BLL:0,1BLE:5010,KL:0,KD:0,AVB:1690,ODT:0,SW:0 androidboot.bootreason=cold,powerkey androidboot.verifiedbootstate=green androidboot.slot_suffix=_a dm="1 vroot none ro 1,0 3611944 verity 1 PARTUUID=009c6079-5025-4c43-8f12-8ceec8aac5ab PARTUUID=009c6079-5025-4c43-8f12-8ceec8aac5ab 4096 4096 451493 451493 sha1 205d7577d21244e9aac3254b1de644a3a5646c68 ab818cfd25b335452dfcb11bc8373316a419746c 10 restart_on_corruption ignore_zero_blocks use_fec_from_device PARTUUID=009c6079-5025-4c43-8f12-8ceec8aac5ab fec_roots 2 fec_blocks 455050 fec_start 455050" r
[ 0.000000] device-mapper: init: will configure 1 devices
[ 0.000000] PID hash table entries: 4096 (order: 3, 32768 bytes)
[ 0.000000] Memory: 1209012K/2093056K available (15804K kernel code, 2384K rwdata, 7008K rodata, 5504K init, 534K bss, 64844K reserved, 819200K cma-reserved)
[ 0.000000] Virtual kernel memory layout:
[ 0.000000] modules : 0xffff000000000000
[ 4.400151] audit: type=1400 audit(1545213107.196:4): avc: denied { dac_read_search } for pid=1 comm="init" capability=2 scontext=u:r:init:s0 tcontext=u:r:init:s0 tclass=capability permissive=0
[ 4.404257] ueventd: ueventd started!
[ 4.407762] selinux: SELinux: Loaded file_contexts
[ 4.407762]
[ 4.408087] ueventd: Parsing file /ueventd.rc...
[ 4.410684] ueventd: Parsing file /vendor/ueventd.rc...
[ 4.411374] ueventd: Parsing file /odm/ueventd.rc...
[ 4.411411] ueventd: Unable to read config file '/odm/ueventd.rc': open() failed: No such file or directory
[ 4.411774] ueventd: Parsing file /ueventd.freescale.rc...
[ 4.411799] ueventd: Unable to read config file '/ueventd.freescale.rc': open() failed: No such file or directory
[ 4.468718] audit: type=1400 audit(1545213107.196:5): avc: denied { dac_read_search } for pid=1 comm="init" capability=2 scontext=u:r:init:s0 tcontext=u:r:init:s0 tclass=capability permissive=0
[ 4.472101] ueventd: firmware: loading 'imx/sdma/sdma-imx7d.bin' for '/devices/platform/30bd0000.dma-controller/firmware/imx!sdma!sdma-imx7d.bin'
[ 4.475252] ueventd: loading /devices/platform/30bd0000.dma-controller/firmware/imx!sdma!sdma-imx7d.bin took 3ms
[ 4.510418] audit: type=1400 audit(1545213107.196:6): avc: denied { dac_read_search } for pid=1 comm="init" capability=2 scontext=u:r:init:s0 tcontext=u:r:init:s0 tclass=capability permissive=0
[ 4.528282] audit: type=1400 audit(1545213107.196:7): avc: denied { dac_read_search } for pid=1 comm="init" capability=2 scontext=u:r:init:s0 tcontext=u:r:init:s0 tclass=capability permissive=0
[ 4.546311] audit: type=1400 audit(1545213107.200:8): avc: denied { dac_read_search } for pid=1 comm="init" capability=2 scontext=u:r:init:s0 tcontext=u:r:init:s0 tclass=capability permissive=0
[ 4.546794] imx-sdma 302c0000.dma-controller: loaded firmware 4.4
[ 4.565009] imx-sdma 302b0000.dma-controller: loaded firmware 4.4
[ 4.566060] imx-sdma 30bd0000.dma-controller: loaded firmware 4.4
[ 4.582504] audit: type=1400 audit(1545213107.200:9): avc: denied { dac_read_search } for pid=1 comm="init" capability=2 scontext=u:r:init:s0 tcontext=u:r:init:s0 tclass=capability permissive=0
[ 4.600094] audit: type=1400 audit(1545213107.200:10): avc: denied { dac_read_search } for pid=1 comm="init" capability=2 scontext=u:r:init:s0 tcontext=u:r:init:s0 tclass=capability permissive=0
[ 4.625329] Registered swp emulation handler
[ 4.635128] watchdogd: watchdogd started (interval 10, margin 20)!
[ 4.642136] Console: switching to colour dummy device 80x25
[ 4.660750] EXT4-fs (mmcblk2p12): Ignoring removed nomblk_io_submit option
[ 4.690019] wlan: loading driver v4.5.23.1
[ 4.696498] hifDeviceInserted: Dumping clocks (50000000,400000000)
[ 4.702758] AR6000: Set async interrupt delay clock as 2.
[ 4.811643] EXT4-fs (mmcblk2p12): recovery complete
[ 4.817080] EXT4-fs (mmcblk2p12): mounted filesystem with ordered data mode. Opts: errors=remount-ro,nomblk_io_submit
[ 4.833590] AR6000: configuration opcode 3 is not used for Linux SDIO stack
[ 4.841263] NUM_DEV=1 FWMODE=0x2 FWSUBMODE=0x0 FWBR_BUF 0
[ 5.207943] random: crng init done
[ 5.246200] HIF Interrupt processing is SYNC ONLY
[ 5.250935] AR6000: configuration opcode 7 is only used for RTOS systems, not Linux systems
[ 5.259314] AR6000: configuration opcode 5 is not used for Linux SDIO stack
[ 5.267174] +HWT
[ 5.274685] -HWT
[ 5.276658] MAILBOX SWAP Service is enabled!
[ 5.280966] Reduced Tx Complete service is enabled!
[ 5.287195] HTCConnectService, host indicate support b2b bundle
[ 5.294394] HTCConnectService, firmware decide to disabled b2b bundle
[ 5.300877] HTC Service:0x0300 ep:1 TX flow control disabled
[ 5.307219] HTCConnectService, host indicate support b2b bundle
[ 5.313391] HTCConnectService, firmware decide to disabled b2b bundle
[ 5.336565] target uses HTT version 3.51; host uses 3.28
[ 5.355999] Host SW:4.5.23.1, FW:0.0.0.27, HW:QCA93x7_REV1_1
[ 5.362280] ol_pktlog_init: pktlogmod_init successfull
[ 5.368799] ath_hif_sdio: HIF (Atheros/multi-bss)
[ 5.373608] wlan: driver loaded in 684000
[ 5.899060] e2fsck: e2fsck 1.43.3 (04-Sep-2016)
[ 5.899060]
[ 5.905172] e2fsck: Pass 1: Checking inodes, blocks, and sizes
[ 5.905172]
[ 5.912534] e2fsck: Pass 2: Checking directory structure
[ 5.912534]
[ 5.919381] e2fsck: Pass 3: Checking directory connectivity
[ 5.919381]
[ 5.926450] e2fsck: Pass 4: Checking reference counts
[ 5.926450]
[ 5.933004] e2fsck: Pass 5: Checking group summary information
[ 5.933004]
[ 5.940333] e2fsck:
[ 5.940333]
[ 5.944023] e2fsck: /dev/block/by-name/userdata: ***** FILE SYSTEM WAS MODIFIED *****
[ 5.944023]
[ 5.953351] e2fsck: /dev/block/by-name/userdata: 1459/581632 files (2.7% non-contiguous), 71133/2326528 blocks
[ 5.953351]
[ 5.970256] EXT4-fs (mmcblk2p12): Ignoring removed nomblk_io_submit option
[ 5.984110] EXT4-fs (mmcblk2p12): mounted filesystem with ordered data mode. Opts: nomblk_io_submit,noauto_da_alloc,errors=panic
[ 6.027852] zram0: detected capacity change from 0 to 314572800
[ 6.055497] logd.auditd: start
[ 6.058548] mkswap: Swapspace size: 307196k, UUID=4597bba0-4899-4f69-a859-01cb82b0bdce
[ 6.066720] logd.klogd: 5919249125
[ 6.067600] Adding 307196k swap on /dev/block/zram0. Priority:-2 extents:1 across:307196k SS
[ 6.111712] type=1400 audit(1545213108.868:38): avc: denied { getattr } for pid=2470 comm="init" path="/data/cache" dev="mmcblk2p12" ino=262159 scontext=u:r:vendor_init:s0 tcontext=u:object_r:cache_file:s0 tclass=dir permissive=0
[ 6.132714] type=1400 audit(1545213108.868:38): avc: denied { getattr } for pid=2470 comm="init" path="/data/cache" dev="mmcblk2p12" ino=262159 scontext=u:r:vendor_init:s0 tcontext=u:object_r:cache_file:s0 tclass=dir permissive=0
[ 6.153263] type=1400 audit(1545213108.868:39): avc: denied { dac_read_search } for pid=1 comm="init" capability=2 scontext=u:r:init:s0 tcontext=u:r:init:s0 tclass=capability permissive=0
[ 6.401585] update_verifier: Started with arg 1: nonencrypted
[ 6.410914] update_verifier: Booting slot 0: isSlotMarkedSuccessful=1
[ 6.417446] update_verifier: Leaving update_verifier.
[ 6.456999] rfkill: BT RF going to : off
[ 6.462590] logd.daemon: reinit
[ 6.486862] Mass Storage Function, version: 2009/09/11
[ 6.492039] LUN: removable file: (no medium)
[ 6.499759] using random self ethernet address
[ 6.504266] using random host ethernet address
[ 6.510623] file system registered
[ 6.633355] healthd: battery l=85 v=3 t=35.0 h=2 st=2 c=400 fc=4000000 cc=32 chg=a
[ 6.800728] healthd: battery l=85 v=3 t=35.0 h=2 st=2 c=400 fc=4000000 cc=32 chg=a
evk_8mm:/ $ [ 7.106743] audit_log_lost: 29 callbacks suppressed
[ 7.106750] audit: audit_lost=494 audit_rate_limit=5 audit_backlog_limit=64
[ 7.147630] audit: rate limit exceeded
[ 7.284788] read descriptors
[ 7.299574] read strings
[ 8.625832] capability: warning: `main' uses 32-bit capabilities (legacy support in use)
[ 11.086668] type=1400 audit(1545213111.616:577): avc: denied { dac_read_search } for pid=1 comm="init" capability=2 scontext=u:r:init:s0 tcontext=u:r:init:s0 tclass=capability permissive=0 duplicate messages suppressed
[ 11.092509] audit: audit_lost=523 audit_rate_limit=5 audit_backlog_limit=64
[ 11.092511] audit: rate limit exceeded
[ 11.117391] type=1400 audit(1545213113.880:578): avc: denied { dac_read_search } for pid=3164 comm="Binder:3164_1" capability=2 scontext=u:r:installd:s0 tcontext=u:r:installd:s0 tclass=capability permissive=0
[ 11.302913] healthd: battery l=85 v=3 t=35.0 h=2 st=2 c=400 fc=4000000 cc=32 chg=a
[ 11.325600] healthd: battery l=85 v=3 t=35.0 h=2 st=2 c=400 fc=4000000 cc=32 chg=a
[ 11.334274] healthd: battery l=85 v=3 t=35.0 h=2 st=2 c=400 fc=4000000 cc=32 chg=a
[ 11.510983] init: processing action (sys.sysctl.extra_free_kbytes=*) from (/init.rc:725)
[ 12.057749] read descriptors
[ 12.060755] read strings
[ 12.063525] read descriptors
[ 12.066436] read strings
[ 12.085743] acc_open
[ 12.087991] acc_release
[ 12.300220] Atheros 8031 ethernet 30be0000.ethernet-1:00: attached PHY driver [Atheros 8031 ethernet] (mii_bus:phy_addr=30be0000.ethernet-1:00, irq=POLL)
[ 12.315851] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 12.333103] type=1400 audit(1545213113.888:583): avc: denied { dac_read_search } for pid=3164 comm="Binder:3164_1" capability=2 scontext=u:r:installd:s0 tcontext=u:r:installd:s0 tclass=capability permissive=0 duplicate messages suppressed
[ 12.352109] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 12.362840] type=1400 audit(1545213115.124:2324): avc: denied { dac_read_search } for pid=3396 comm="main" capability=2 scontext=u:r:zygote:s0 tcontext=u:r:zygote:s0 tclass=capability permissive=0
[ 12.422636] type=1400 audit(1545213115.128:2327): avc: denied { dac_read_search } for pid=3396 comm="main" capability=2 scontext=u:r:zygote:s0 tcontext=u:r:zygote:s0 tclass=capability permissive=0 duplicate messages suppressed
[ 12.424148] audit: audit_lost=2263 audit_rate_limit=5 audit_backlog_limit=64
[ 12.424151] audit: rate limit exceeded
[ 12.425120] sdcardfs version 2.0
[ 12.425126] sdcardfs: dev_name -> /data/media
[ 12.425128] sdcardfs: options -> fsuid=1023,fsgid=1023,multiuser,derive_gid,default_normal,mask=6,userid=0,gid=1015
[ 12.425133] sdcardfs: mnt -> ffff80003f93f520
[ 12.425204] sdcardfs: mounted on top of /data/media type ext4
[ 12.425866] Remount options were mask=23,gid=9997 for vfsmnt ffff80003cdee560.
[ 12.425878] sdcardfs : options - debug:1
[ 12.425881] sdcardfs : options - gid:9997
[ 12.425883] sdcardfs : options - mask:23
[ 12.425988] Remount options were mask=7,gid=9997 for vfsmnt ffff80003cdeefe0.
[ 12.425994] sdcardfs : options - debug:1
[ 12.425997] sdcardfs : options - gid:9997
[ 12.425998] sdcardfs : options - mask:7
[ 12.528256] type=1400 audit(1545213115.216:2328): avc: denied { dac_read_search } for pid=3421 comm="main" capability=2 scontext=u:r:zygote:s0 tcontext=u:r:zygote:s0 tclass=capability permissive=0
[ 12.838706] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 13.463127] type=1400 audit(1545213115.216:2328): avc: denied { dac_read_search } for pid=3421 comm="main" capability=2 scontext=u:r:zygote:s0 tcontext=u:r:zygote:s0 tclass=capability permissive=0
[ 13.484373] type=1400 audit(1545213116.256:2356): avc: denied { read } for pid=3281 comm="system_server" name="state" dev="sysfs" ino=21235 scontext=u:r:system_server:s0 tcontext=u:object_r:sysfs:s0 tclass=file permissive=0
[ 13.511832] type=1400 audit(1545213116.256:2356): avc: denied { read } for pid=3281 comm="system_server" name="state" dev="sysfs" ino=21235 scontext=u:r:system_server:s0 tcontext=u:object_r:sysfs:s0 tclass=file permissive=0
[ 13.548648] type=1400 audit(1545213116.260:2357): avc: denied { read } for pid=3281 comm="system_server" name="state" dev="sysfs" ino=21366 scontext=u:r:system_server:s0 tcontext=u:object_r:sysfs:s0 tclass=file permissive=0
[ 13.592469] audit: audit_lost=2290 audit_rate_limit=5 audit_backlog_limit=64
[ 13.592472] audit: rate limit exceeded
[ 15.478774] init: Service 'bootanim' (pid 3275) exited with status 0
[ 15.513613] init: processing action (sys.boot_completed=1) from (/init.rc:719)
[ 15.522372] init: processing action (sys.boot_completed=1) from (/vendor/etc/init/hw/init.freescale.imx8mm.rc:20)
[ 15.540522] audit: audit_lost=2291 audit_rate_limit=5 audit_backlog_limit=64
[ 15.548967] audit: rate limit exceeded
[ 15.561324] init: processing action (sys.boot_completed=1) from (/vendor/etc/init/hw/init.freescale.imx8mm.rc:27)
[ 15.581467] selinux: SELinux: Skipping restorecon_recursive(/data/system_ce/0)
[ 15.581467]
[ 15.587835] init: processing action (sys.boot_completed=1 && sys.logbootcomplete=1) from (/system/etc/init/bootstat.rc:70)
[ 15.589388] init: starting service 'exec 6 (/system/bin/bootstat --set_system_boot_reason --record_boot_complete --record_boot_reason --record_time_since_factory_reset -l)'...
[ 15.593035] init: processing action (sys.boot_completed=1 && sys.wifitracing.started=0) from (/system/etc/init/wifi-events.rc:20)
[ 15.650698] init: Command 'mkdir /sys/kernel/debug/tracing/instances/wifi 711' action=sys.boot_completed=1 && sys.wifitracing.started=0 (/system/etc/init/wifi-events.rc:22) took 57ms and succeeded
[ 16.691609] type=1400 audit(1545213118.336:2366): avc: denied { dac_read_search } for pid=3065 comm="Binder:3065_3" capability=2 scontext=u:r:vold:s0 tcontext=u:r:vold:s0 tclass=capability permissive=0 duplicate messages suppressed
[ 16.712717] type=1400 audit(1545213119.484:3585): avc: denied { dac_read_search } for pid=3863 comm="main" capability=2 scontext=u:r:zygote:s0 tcontext=u:r:zygote:s0 tclass=capability permissive=0
[ 16.844074] type=1400 audit(1545213119.488:3588): avc: denied { dac_read_search } for pid=3863 comm="main" capability=2 scontext=u:r:zygote:s0 tcontext=u:r:zygote:s0 tclass=capability permissive=0 duplicate messages suppressed
[ 16.872733] audit: audit_lost=3509 audit_rate_limit=5 audit_backlog_limit=64
[ 16.872738] audit: rate limit exceeded
[ 16.899687] type=1400 audit(1545213119.640:3589): avc: denied { dac_read_search } for pid=3887 comm="main" capability=2 scontext=u:r:zygote:s0 tcontext=u:r:zygote:s0 tclass=capability permissive=0
[ 22.679393] type=1400 audit(1545213119.640:3589): avc: denied { dac_read_search } for pid=3887 comm="main" capability=2 scontext=u:r:zygote:s0 tcontext=u:r:zygote:s0 tclass=capability permissive=0
[ 22.698123] type=1400 audit(1545213125.472:3605): avc: denied { dac_read_search } for pid=3980 comm="main" capability=2 scontext=u:r:zygote:s0 tcontext=u:r:zygote:s0 tclass=capability permissive=0
[ 22.763382] audit: audit_lost=3524 audit_rate_limit=5 audit_backlog_limit=64
[ 22.763410] type=1400 audit(1545213125.472:3608): avc: denied { dac_read_search } for pid=3980 comm="main" capability=2 scontext=u:r:zygote:s0 tcontext=u:r:zygote:s0 tclass=capability permissive=0 duplicate messages suppressed
[ 22.763434] type=1400 audit(1545213125.556:3609): avc: denied { dac_read_search } for pid=4003 comm="main" capability=2 scontext=u:r:zygote:s0 tcontext=u:r:zygote:s0 tclass=capability permissive=0
[ 22.809034] audit: rate limit exceeded

[diegoadrian]

Hello,

This is a different problem, I suggest you open a new thread or submit a ticket to our support site. With that, we could help you in a better way.

Best regards,

Diego.

[diegoadrian]

Hello,

In which connector are you placing the MIPI to HDMI converter?

Furthermore, which Linux image are you using? I tested with our demo image for the i.MX8Mmini, and it worked perfectly.

Best regards,

Diego.

[philiph]

This worked out of the box for me, connect the thick braided MIPI cable between "DSI MIPI" and the adapter and then connect the adapter to the screen with a HDMI cable. I booted from eMMC (Check the jumpers) and connected the USB-UART to watch boot process.

[harshamedu]

Hi, 

  I am having some issue with imx8m mini evk display MIPI-DSI to HDMI. The output is seen during uboot and then disappears when loading kernel. What is the proper bootargs required in uboot to specify the MIPI-DSI driver for video ?