|  | 
 
| 本帖最后由 wolongtest 于 2024-11-28 15:18 编辑 
 采用ok113核心板, 启动有一点概率出现启动失败,断电重启又恢复正常了,从串口调试打印来看,提示VFS: Cannot open root device "mmcblk0p5" or unknown-block(0,0): error -6造成系统启动失败崩溃
 
 
 请问如何处理避免这个情况? 谢谢
 启动出错日志如下:
 
 [73]HELLO! BOOT0 is starting!
 [76]BOOT0 commit : 09b36272
 [78]set pll start
 [80]fix vccio detect value:0xc0
 [87]periph0 has been enabled
 [90]set pll end
 [92][pmu]: bus read error
 [94]board init ok
 [96]DRAM only have internal ZQ!!
 [99]get_pmu_exist() = -1
 [102]DRAM BOOT DRIVE INFO: V0.32
 [105]DRAM CLK = 792 MHz
 [107]DRAM Type = 3 (2:DDR2,3:DDR3)
 [110]DRAMC ZQ value: 0x7b7bfb
 [113]DRAM ODT value: 0x42.
 [116]ddr_efuse_type: 0x0
 [118]mark_id: 0x34
 [121]DRAM SIZE =512 M
 [123]PLL_DDR_CTRL_REG:0xf8004100
 [126]DRAM_CLK_REG:0xc0000000
 [129][TIMING DEBUG] MR2= 0x18
 [136]DRAM ** test OK.
 [139]rtc standby flag is 0x0, super standby flag is 0x0
 [144]dram size =512
 [147]card no is 2
 [148]sdcard 2 line count 4
 [151][mmc]: mmc driver ver 2021-05-21 14:47
 [160][mmc]: Wrong media type 0x0, but host sdc2, try mmc first
 [166][mmc]: ***Try MMC card 2***
 [190][mmc]: RMCA OK!
 [192][mmc]: mmc 2 bias 0
 [196][mmc]: MMC 5.1
 [198][mmc]: HSSDR52/SDR25 4 bit
 [200][mmc]: 50000000 Hz
 [203][mmc]: 7456 MB
 [204][mmc]: ***SD/MMC 2 init OK!!!***
 [299]Loading boot-pkg Succeed(index=0).
 [303]Entry_name        = u-boot
 [310]Entry_name        = optee
 [314]Entry_name        = dtb
 [317]tunning data addr:0x430003e8
 [320]Jump to second Boot.
 [366]FORLINX: auth pass!
 M/TC: OP-TEE version: 15ee1539 (gcc version 5.3.1 20160412 (Linaro GCC 5.3-2016.05)) #1 Tue Mar 29 06:48:41 UTC 2022 arm
 
 
 U-Boot 2018.05-svn863 (Sep 23 2024 - 01:55:35 +0000) Allwinner Technology
 
 [00.418]CPU:   Allwinner Family
 [00.421]Model: sun8iw20
 I2C:   ready
 [00.440]DRAM:  512 MiB
 [00.444]Relocation Offset is: 1cebe000
 [00.472]secure enable bit: 0
 E/TC:0   fdt_getprop_u32:343 prop trace_level not found
 [00.485]CPU=1008 MHz,PLL6=600 Mhz,AHB=200 Mhz, APB1=100Mhz  MBus=300Mhz
 [00.492]gic: sec monitor mode
 [00.494]flash init start
 [00.496]workmode = 0,storage type = 2
 [00.500][mmc]: mmc driver ver uboot2018:2021-09-07 19:43:00
 [00.506][mmc]: SUNXI SDMMC Controller Version:0x50310
 [00.530][mmc]: Best spd md: 2-HSDDR52/DDR50, freq: 2-50000000, Bus width: 4
 [00.537]sunxi flash init ok
 [00.539]Loading Environment from SUNXI_FLASH... OK
 disp_type:1
 [00.558]line:717 init_clocks
 [00.561]drv_disp_init
 request pwm success, pwm3:pwm3:0x2000c00.
 [00.578]drv_disp_init finish
 [00.581]boot_gui_init:start
 [00.583]set disp.dev2_output_type fail. using defval=0
 tv skip open
 [00.890]boot_gui_init:finish
 partno erro : can't find partition bootloader
 54 bytes read in 0 ms
 [00.904]bmp_name=bootlogo.bmp size 1036854
 1036854 bytes read in 23 ms (43 MiB/s)
 [00.944]Item0 (Map) magic is bad
 [00.947]the secure storage item0 copy0 magic is bad
 [00.951]Item0 (Map) magic is bad
 [00.954]the secure storage item0 copy1 magic is bad
 [00.959]Item0 (Map) magic is bad
 secure storage read widevine fail
 [00.965]secure storage read widevine fail with:-1
 secure storage read ec_key fail
 [00.972]secure storage read ec_key fail with:-1
 secure storage read ec_cert1 fail
 [00.979]secure storage read ec_cert1 fail with:-1
 secure storage read ec_cert2 fail
 [00.987]secure storage read ec_cert2 fail with:-1
 secure storage read ec_cert3 fail
 [00.994]secure storage read ec_cert3 fail with:-1
 secure storage read rsa_key fail
 [01.002]secure storage read rsa_key fail with:-1
 secure storage read rsa_cert1 fail
 [01.009]secure storage read rsa_cert1 fail with:-1
 secure storage read rsa_cert2 fail
 [01.017]secure storage read rsa_cert2 fail with:-1
 secure storage read rsa_cert3 fail
 [01.024]secure storage read rsa_cert3 fail with:-1
 [01.029]usb burn from boot
 delay time 0
 weak:otg_phy_config
 [01.040]usb prepare ok
 [01.143]overtime
 [01.146]do_burn_from_boot usb : no usb exist
 List file under ULI/factory
 ** Unrecognized filesystem type **
 [01.158]update part info
 [01.161]update bootcmd
 [01.163]change working_fdt 0x5c87de70 to 0x5c85de70
 [01.169][mmc]: no mmc-hs400-1_8v!
 [01.171][mmc]: no mmc-hs200-1_8v!
 [01.174][mmc]: get max-frequency ok 50000000 Hz
 [01.192]update dts
 disp_type:1
 Hit any key to stop autoboot (Spacebar):  0
 [02.549]no vendor_boot partition is found
 Android's image name: sun8i_arm
 [02.567]Starting kernel ...
 
 [02.570][mmc]: mmc exit start
 [02.587][mmc]: mmc 2 exit ok
 [    0.000000] Booting Linux on physical CPU 0x0
 [    0.000000] Linux version 5.4.61 (qzy@docker_a40it113) (arm-linux-gnueabi-gcc (Linaro GCC 5.3-2016.05) 5.3.1 20160412, GNU ld (Linaro_Binutils-2016.05) 2.25.0 Linaro 2016_02) #1 SMP PREEMPT Wed Sep 4 08:45:06 UTC 2024
 [    0.000000] CPU: ARMv7 Processor [410fc075] revision 5 (ARMv7), cr=10c5387d
 [    0.000000] CPU: div instructions available: patching division code
 [    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
 [    0.000000] OF: fdt: Machine model: sun8iw20
 [    0.000000] earlycon: uart8250 at MMIO32 0x02500000 (options '')
 [    0.000000] printk: bootconsole [uart8250] enabled
 [    0.000000] Memory policy: Data cache writealloc
 [    0.000000] cma: Reserved 16 MiB at 0x5f000000
 [    0.000000] On node 0 totalpages: 131072
 [    0.000000]   Normal zone: 1024 pages used for memmap
 [    0.000000]   Normal zone: 0 pages reserved
 [    0.000000]   Normal zone: 131072 pages, LIFO batch:31
 [    0.000000] psci: probing for conduit method from DT.
 [    0.000000] psci: PSCIv1.0 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 v1.0
 [    0.000000] percpu: Embedded 15 pages/cpu s30976 r8192 d22272 u61440
 [    0.000000] pcpu-alloc: s30976 r8192 d22272 u61440 alloc=15*4096
 [    0.000000] pcpu-alloc: [0] 0 [0] 1
 [    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 130048
 [    0.000000] Kernel command line: earlycon=uart8250,mmio32,0x02500000 clk_ignore_unused initcall_debug=0 console=ttyAS0,115200 loglevel=8 root=/dev/mmcblk0p5 init=/init partitions=boot-resource@mmcblk0p1:env@mmcblk0p2:env-redund@mmcblk0p3:boot@mmcblk0p4:rootfs@mmcblk0p5:dsp0@mmcblk0p6:private@mmcblk0p7:UDISK@mmcblk0p8 cma=16M snum= mac_addr=b6:a4:ac:d4:f6:1c wifi_mac= bt_mac= specialstr= gpt=1 androidboot.mode=normal androidboot.hardware=sun8iw20p1 boot_type=2 androidboot.boot_type=2 gpt=1 uboot_message=2018.05-svn863(09/23/2024-01:55:35) disp_reserve=1658880,0x5c902000 androidboot.dramsize=512
 [    0.000000] Dentry cache hash table entries: 65536 (order: 6, 262144 bytes, linear)
 [    0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072 bytes, linear)
 [    0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off
 [    0.000000] Memory: 483304K/524288K available (6144K kernel code, 327K rwdata, 1868K rodata, 1024K init, 288K bss, 24600K reserved, 16384K cma-reserved, 0K highmem)
 [    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1
 [    0.000000] rcu: Preemptible hierarchical RCU implementation.
 [    0.000000] rcu:         RCU restricting CPUs from NR_CPUS=4 to nr_cpu_ids=2.
 [    0.000000]         Tasks RCU enabled.
 [    0.000000] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies.
 [    0.000000] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2
 [    0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16
 [    0.000000] random: get_random_bytes called from start_kernel+0x250/0x3d0 with crng_init=0
 [    0.000000] arch_timer: cp15 timer(s) running at 24.00MHz (phys).
 [    0.000000] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x588fe9dc0, max_idle_ns: 440795202592 ns
 [    0.000006] sched_clock: 56 bits at 24MHz, resolution 41ns, wraps every 4398046511097ns
 [    0.008382] Switching to timer-based delay loop, resolution 41ns
 [    0.014833] clocksource: timer: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 79635851949 ns
 [    0.025019] Console: colour dummy device 80x30
 [    0.029708] Calibrating delay loop (skipped), value calculated using timer frequency.. 48.00 BogoMIPS (lpj=240000)
 [    0.040565] pid_max: default: 32768 minimum: 301
 [    0.045559] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
 [    0.053237] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
 [    0.061976] CPU: Testing write buffer coherency: ok
 [    0.067446] /cpus/cpu@0 missing clock-frequency property
 [    0.073044] /cpus/cpu@1 missing clock-frequency property
 [    0.078625] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
 [    0.085114] Setting up static identity map for 0x40100000 - 0x40100060
 [    0.092106] rcu: Hierarchical SRCU implementation.
 [    0.097423] BOOTEVENT:        97.413082: ON
 [    0.102016] smp: Bringing up secondary CPUs ...
 [    0.107991] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
 [    0.108145] smp: Brought up 1 node, 2 CPUs
 [    0.118416] SMP: Total of 2 processors activated (96.00 BogoMIPS).
 [    0.124897] CPU: All CPU(s) started in SVC mode.
 [    0.130311] devtmpfs: initialized
 [    0.146366] VFP support v0.3: implementor 41 architecture 2 part 30 variant 7 rev 5
 [    0.154946] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
 [    0.165291] futex hash table entries: 512 (order: 3, 32768 bytes, linear)
 [    0.173207] pinctrl core: initialized pinctrl subsystem
 [    0.180144] NET: Registered protocol family 16
 [    0.186577] DMA: preallocated 256 KiB pool for atomic coherent allocations
 [    0.229644] rtc_ccu: sunxi ccu init OK
 [    0.236125] ccu: sunxi ccu init OK
 [    0.240207] r_ccu: sunxi ccu init OK
 [    0.280200] iommu: Default domain type: Translated
 [    0.285947] sunxi iommu: irq = 24
 [    0.291518] pwm module init!
 [    0.296509] clocksource: Switched to clocksource arch_sys_counter
 [    0.312382] sun8iw20-pinctrl pio: initialized sunXi PIO driver
 [    0.331558] thermal_sys: Registered thermal governor 'step_wise'
 [    0.331564] thermal_sys: Registered thermal governor 'user_space'
 [    0.339237] NET: Registered protocol family 2
 [    0.351248] tcp_listen_portaddr_hash hash table entries: 512 (order: 0, 6144 bytes, linear)
 [    0.360054] TCP established hash table entries: 4096 (order: 2, 16384 bytes, linear)
 [    0.368244] TCP bind hash table entries: 4096 (order: 3, 32768 bytes, linear)
 [    0.375771] TCP: Hash tables configured (established 4096 bind 4096)
 [    0.382575] UDP hash table entries: 256 (order: 1, 8192 bytes, linear)
 [    0.389463] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes, linear)
 [    0.396993] NET: Registered protocol family 1
 [    0.402060] sun8iw20-pinctrl pio: pio supply vcc-pb not found, using dummy regulator
 [    0.410767] spi spi1: spi1 supply spi not found, using dummy regulator
 [    0.417843] sunxi_spi_resource_get()2160 - [spi1] SPI MASTER MODE
 [    0.424272] sunxi_spi_resource_get()2198 - Failed to get sample mode
 [    0.430932] sunxi_spi_resource_get()2203 - Failed to get sample delay
 [    0.437662] sunxi_spi_resource_get()2207 - sample_mode:-1431633921 sample_delay:-1431633921
 [    0.446481] sunxi_spi_clk_init()2249 - [spi1] mclk 100000000
 [    0.453106] sunxi_spi_probe()2663 - [spi1]: driver probe succeed, base e081d000, irq 44
 [    0.463475] Initialise system trusted keyrings
 [    0.468340] workingset: timestamp_bits=30 max_order=17 bucket_order=0
 [    0.486933] fuse: init (API version 7.31)
 [    0.520466] NET: Registered protocol family 38
 [    0.525136] Key type asymmetric registered
 [    0.530338] Asymmetric key parser 'x509' registered
 [    0.535537] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 250)
 [    0.543341] io scheduler mq-deadline registered
 [    0.548108] io scheduler kyber registered
 [    0.552425] atomic64_test: passed
 [    0.557104] [DISP]disp_module_init
 [    0.561283] disp 5000000.disp: Adding to iommu group 0
 [    0.567337] [DISP] disp_init,line:2386:
 [    0.567342] smooth display screen:0 type:2 mode:11
 [    0.576763] [DISP] disp_init_hdmi,line:1047:
 [    0.576767] dont support hdmi
 [    0.584692] [DISP] bsp_disp_sync_with_hw,line:658:
 [    0.584697] Can't find device(2) for manager 0
 [    0.587138] [DISP]disp_module_init finish
 [    0.599829] sunxi_sid_init()563 - insmod ok
 [    0.604662] pwm-regulator: supplied by regulator-dummy
 [    0.611371] Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled
 [    0.619955] sun8iw20-pinctrl pio: pio supply vcc-pg not found, using dummy regulator
 [    0.628479] uart uart0: get regulator failed
 [    0.632951] uart uart0: uart0 supply uart not found, using dummy regulator
 [    0.640550] uart0: ttyAS0 at MMIO 0x2500000 (irq = 33, base_baud = 1500000) is a SUNXI
 [    0.648885] sw_console_setup()1819 - console setup baud 115200 parity n bits 8, flow n
 [    0.657240] printk: console [ttyAS0] enabled
 [    0.657240] printk: console [ttyAS0] enabled
 [    0.666475] printk: bootconsole [uart8250] disabled
 [    0.666475] printk: bootconsole [uart8250] disabled
 [    0.677896] uart uart1: get regulator failed
 [    0.682710] uart uart1: uart1 supply uart not found, using dummy regulator
 [    0.690835] uart uart1: uart1 set rs485 mode, gpio202
 [    0.696575] uart1: ttyAS1 at MMIO 0x2500400 (irq = 34, base_baud = 1500000) is a SUNXI
 [    0.706167] sun8iw20-pinctrl pio: pio supply vcc-pd not found, using dummy regulator
 [    0.715241] uart uart2: get regulator failed
 [    0.720083] uart uart2: uart2 supply uart not found, using dummy regulator
 [    0.728190] uart uart2: uart2 set rs485 mode, gpio203
 [    0.733903] uart2: ttyAS2 at MMIO 0x2500800 (irq = 35, base_baud = 1500000) is a SUNXI
 [    0.743635] uart uart3: get regulator failed
 [    0.748482] uart uart3: uart3 supply uart not found, using dummy regulator
 [    0.756592] uart uart3: uart3 set rs485 mode, gpio204
 [    0.762307] uart3: ttyAS3 at MMIO 0x2500c00 (irq = 36, base_baud = 1500000) is a SUNXI
 [    0.772021] uart uart4: get regulator failed
 [    0.776873] uart uart4: uart4 supply uart not found, using dummy regulator
 [    0.784955] uart uart4: uart4 set rs485 mode, gpio205
 [    0.790710] uart4: ttyAS4 at MMIO 0x2501000 (irq = 37, base_baud = 1500000) is a SUNXI
 [    0.800396] uart uart5: get regulator failed
 [    0.805209] uart uart5: uart5 supply uart not found, using dummy regulator
 [    0.813281] uart5: ttyAS5 at MMIO 0x2501400 (irq = 38, base_baud = 1500000) is a SUNXI
 [    0.823114] deinterlace 5400000.deinterlace: Adding to iommu group 0
 [    0.830826] deinterlace 5400000.deinterlace: version[1.0.0], ip=0x110
 [    0.839596] [ADDR_MGT] addr_mgt_probe: module version: v1.0.10
 [    0.846908] [ADDR_MGT] addr_init: Failed to get type_def_bt, use default: 0
 [    0.854728] [ADDR_MGT] addr_mgt_probe: success.
 [    0.861564] libphy: Fixed MDIO Bus: probed
 [    0.867882] sunxi gmac driver's version: 1.0.0
 [    0.873062] gmac-power0: NULL
 [    0.876392] gmac-power1: NULL
 [    0.879748] gmac-power2: NULL
 [    0.884612] i2c /dev entries driver
 [    0.889668] sunxi-wdt 20500a0.watchdog: Watchdog enabled (timeout=16 sec, nowayout=0)
 [    0.900552] sun8iw20-pinctrl pio: pio supply vcc-pc not found, using dummy regulator
 [    0.909515] sunxi-mmc 4022000.sdmmc: SD/MMC/SDIO Host Controller Driver(v4.21 2021-05-24 16:10)
 [    0.919499] sunxi-mmc 4022000.sdmmc: ***ctl-spec-caps*** 308
 [    0.925906] sunxi-mmc 4022000.sdmmc: No vmmc regulator found
 [    0.932275] sunxi-mmc 4022000.sdmmc: No vqmmc regulator found
 [    0.938737] sunxi-mmc 4022000.sdmmc: No vdmmc regulator found
 [    0.945184] sunxi-mmc 4022000.sdmmc: No vd33sw regulator found
 [    0.951745] sunxi-mmc 4022000.sdmmc: No vd18sw regulator found
 [    0.958301] sunxi-mmc 4022000.sdmmc: No vq33sw regulator found
 [    0.964847] sunxi-mmc 4022000.sdmmc: No vq18sw regulator found
 [    0.971441] sunxi-mmc 4022000.sdmmc: Cann't get pin bias hs pinstate,check if needed
 [    0.981055] sunxi-mmc 4022000.sdmmc: sdc set ios:clk 0Hz bm PP pm UP vdd 21 width 1 timing LEGACY(SDR12) dt B
 [    1.004811] sunxi-mmc 4022000.sdmmc: sdc set ios:clk 400000Hz bm PP pm ON vdd 21 width 1 timing LEGACY(SDR12) dt B
 [    1.029093] sunxi-mmc 4022000.sdmmc: detmode:alway in(non removable)
 [    1.036243] sunxi-mmc 4022000.sdmmc: sdc set ios:clk 400000Hz bm PP pm ON vdd 21 width 1 timing LEGACY(SDR12) dt B
 [    1.038534] sunxi-msgbox 3003000.msgbox: sunxi msgbox driver probe ...
 [    1.055556] sunxi-msgbox 3003000.msgbox: sunxi msgbox driver init ok...
 [    1.056566] sunxi-mmc 4022000.sdmmc: sdc set ios:clk 400000Hz bm PP pm ON vdd 21 width 1 timing LEGACY(SDR12) dt B
 [    1.064263] rpmsg_tty_init: Sunxi rpmsg tty driver will init
 [    1.076279] sunxi-mmc 4022000.sdmmc: sdc set ios:clk 400000Hz bm OD pm ON vdd 21 width 1 timing LEGACY(SDR12) dt B
 [    1.081168] rpmsg_tty_init: Sunxi rpmsg tty driver init ok
 [    1.102134] NET: Registered protocol family 10
 [    1.108307] Segment Routing with IPv6
 [    1.112591] sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver
 [    1.121017] NET: Registered protocol family 17
 [    1.126033] NET: Registered protocol family 15
 [    1.131547] Registering SWP/SWPB emulation handler
 [    1.137478] Loading compiled-in X.509 certificates
 [    1.144366] sunxi-mmc 4022000.sdmmc: sdc set ios:clk 400000Hz bm OD pm ON vdd 21 width 1 timing LEGACY(SDR12) dt B
 [    1.147556] tv_probe()1527 - of_property_read_string tv_power failed!
 [    1.156302] sunxi-mmc 4022000.sdmmc: sdc set ios:clk 400000Hz bm OD pm ON vdd 21 width 1 timing LEGACY(SDR12) dt B
 [    1.163722] get_key_map_info()179 - Failed to find "tvou" in dts.
 [    1.181923] tve_clk_config()894 - screen[0] clk_parent is NULL
 [    1.183081] sunxi-mmc 4022000.sdmmc: sdc set ios:clk 400000Hz bm OD pm ON vdd 21 width 1 timing LEGACY(SDR12) dt B
 [    1.188497] tv probe finished!
 [    1.189077] [DISP] disp_device_attached,line:159:
 [    1.189082] attached ok, mgr0<-->device0, type=2
 [    1.214331] disp_al_manager_apply ouput_type:2
 [    1.219039] sunxi-i2c sunxi-i2c0: sunxi-i2c0 supply twi not found, using dummy regulator
 [    1.229917] at24 0-0050: 256 byte 24c02 EEPROM, writable, 1 bytes/write
 [    1.238342] lm75 0-004e: hwmon1: sensor 'lm75b'
 [    1.244025] sunxi-i2c sunxi-i2c0: probe success
 [    1.249682] sunxi-i2c sunxi-i2c1: sunxi-i2c1 supply twi not found, using dummy regulator
 [    1.259230] sunxi-mmc 4022000.sdmmc: sdc set ios:clk 400000Hz bm PP pm ON vdd 21 width 1 timing LEGACY(SDR12) dt B
 [    1.271718] sunxi-i2c sunxi-i2c1: probe success
 [    1.277412] sunxi-i2c sunxi-i2c3: sunxi-i2c3 supply twi not found, using dummy regulator
 [    1.289517] rtc-pcf8563 3-0051: registered as rtc0
 [    1.295311] rtc-pcf8563 3-0051: setting system clock to 2024-11-28T06:22:57 UTC (1732774977)
 [    1.305584] sunxi-mmc 4022000.sdmmc: avoid to switch power_off_notification to POWERED_ON(0x01)
 [    1.315434] sunxi-mmc 4022000.sdmmc: avoid to switch power_off_notification to POWERED_ON(0x01)
 [    1.325254] sunxi-mmc 4022000.sdmmc: avoid to switch power_off_notification to POWERED_ON(0x01)
 [    1.335105] sunxi-mmc 4022000.sdmmc: avoid to switch power_off_notification to POWERED_ON(0x01)
 [    1.345115] sunxi-i2c sunxi-i2c3: probe success
 [    1.356579] sunxi-mmc 4022000.sdmmc: sdc set ios:clk 400000Hz bm PP pm ON vdd 21 width 1 timing MMC-HS(SDR20) dt B
 [    1.398500] input: user-key as /devices/platform/user-key/input/input0
 [    1.405982] sunxi-mmc 4022000.sdmmc: sdc set ios:clk 50000000Hz bm PP pm ON vdd 21 width 1 timing MMC-HS(SDR20) dt B
 [    1.407481] clk: Not disabling unused clocks
 [    1.422689] sunxi-mmc 4022000.sdmmc: sdc set ios:clk 50000000Hz bm PP pm ON vdd 21 width 4 timing MMC-HS(SDR20) dt B
 [    1.434916] VFS: Cannot open root device "mmcblk0p5" or unknown-block(0,0): error -6
 [    1.443658] Please append a correct "root=" boot option; here are the available partitions:
 [    1.453057] sunxi-mmc 4022000.sdmmc: sdc set ios:clk 50000000Hz bm PP pm ON vdd 21 width 4 timing MMC-DDR52 dt B
 [    1.464676] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
 [    1.473943] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.4.61 #1
 [    1.480573] Hardware name: Generic DT based system
 [    1.485961] [<c010e2d8>] (unwind_backtrace) from [<c010a89c>] (show_stack+0x10/0x14)
 [    1.494645] [<c010a89c>] (show_stack) from [<c0604b90>] (dump_stack+0x7c/0x98)
 [    1.502744] [<c0604b90>] (dump_stack) from [<c0119d04>] (panic+0x104/0x3dc)
 [    1.510553] [<c0119d04>] (panic) from [<c0a01278>] (mount_block_root+0x258/0x300)
 [    1.518945] [<c0a01278>] (mount_block_root) from [<c0a014bc>] (prepare_namespace+0x118/0x178)
 [    1.528503] [<c0a014bc>] (prepare_namespace) from [<c0619274>] (kernel_init+0x8/0x118)
 [    1.537379] [<c0619274>] (kernel_init) from [<c01010e8>] (ret_from_fork+0x14/0x2c)
 [    1.545861] Exception stack(0xde43dfb0 to 0xde43dff8)
 [    1.551520] dfa0:                                     00000000 00000000 00000000 00000000
 [    1.560685] dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
 [    1.569850] dfe0: 00000000 00000000 00000000 00000000 00000013 00000000
 [    1.577267] CPU1: stopping
 [    1.580299] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.4.61 #1
 [    1.586929] Hardware name: Generic DT based system
 [    1.592302] [<c010e2d8>] (unwind_backtrace) from [<c010a89c>] (show_stack+0x10/0x14)
 [    1.600983] [<c010a89c>] (show_stack) from [<c0604b90>] (dump_stack+0x7c/0x98)
 [    1.609080] [<c0604b90>] (dump_stack) from [<c010c690>] (handle_IPI+0xc0/0x168)
 [    1.617275] [<c010c690>] (handle_IPI) from [<c0375934>] (gic_handle_irq+0x70/0x78)
 [    1.625763] [<c0375934>] (gic_handle_irq) from [<c01021cc>] (__irq_svc+0x6c/0xa8)
 [    1.634146] Exception stack(0xde477f80 to 0xde477fc8)
 [    1.639807] 7f80: 000005ac debc1574 00000000 c0115240 00000002 de476000 c0b04e68 c0b04ea4
 [    1.648974] 7fa0: 4000406a 410fc075 00000000 00000000 c0b788b0 de477fd0 c0107fb8 c0107fbc
 [    1.658137] 7fc0: 60000113 ffffffff
 [    1.662047] [<c01021cc>] (__irq_svc) from [<c0107fbc>] (arch_cpu_idle+0x2c/0x38)
 [    1.670340] [<c0107fbc>] (arch_cpu_idle) from [<c013e938>] (do_idle+0xb8/0x120)
 [    1.678534] [<c013e938>] (do_idle) from [<c013ec3c>] (cpu_startup_entry+0x18/0x1c)
 [    1.687019] [<c013ec3c>] (cpu_startup_entry) from [<40102c0c>] (0x40102c0c)
 [    1.694836] ---[ end Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) ]---
 
 
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