[Miscellaneous Android Development] samco08:
dmseg 1/2

<6>[ 0.000000] Initializing cgroup subsys cpu

<5>[ 0.000000] Linux version 3.0.8+ (yudongsheng@ubuntu) (gcc version 4.4.3 (GCC) ) #233 SMP PREEMPT Mon Sep 2 18:37:15 CST 2013

<4>[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=10c53c7d

<4>[ 0.000000] CPU: VIPT nonaliasing data cache, VIPT aliasing instruction cache

<4>[ 0.000000] Machine: RK30board

<6>[ 0.000000] memory reserve: Memory(base:0x91800000 size:80M) reserved for <ion>

<6>[ 0.000000] memory reserve: Memory(base:0x90c00000 size:12M) reserved for <fb0 buf>

<6>[ 0.000000] memory reserve: Memory(base:0x90600000 size:6M) reserved for <camera_ipp_mem>

<6>[ 0.000000] memory reserve: Total reserved 98M

<4>[ 0.000000] Memory policy: ECC disabled, Data cache writeback

<6>[ 0.000000] bootconsole [earlycon0] enabled

<4>[ 0.000000] CPU SRAM: copied sram code from c0aa7000 to fef00100 – fef023d0

<4>[ 0.000000] CPU SRAM: copied sram data from c0aa92d0 to fef03000 – fef03920

<6>[ 0.000000] L310 cache controller enabled

<6>[ 0.000000] l2x0: 16 ways, CACHE_ID 0x4100c0c8, AUX_CTRL 0x76050001, Cache size: 524288 B

<4>[ 0.000000] DDR DEBUG: version 1.00 20130121

<4>[ 0.000000] DDR DEBUG: DDR3 Device

<4>[ 0.000000] DDR DEBUG: Bus Width=32 Col=10 Bank=8 Row=15 CS=1 Total Capability=1024MB

<4>[ 0.000000] DDR DEBUG: init success!!! freq=300MHz

<4>[ 0.000000] DDR DEBUG: DTONE=0x1, DTERR=0x0, DTIERR=0x0, DTPASS=0x4, DGSL=1 extra clock, DGPS=90

<4>[ 0.000000] DDR DEBUG: DTONE=0x1, DTERR=0x0, DTIERR=0x0, DTPASS=0x4, DGSL=1 extra clock, DGPS=90

<4>[ 0.000000] DDR DEBUG: DTONE=0x1, DTERR=0x0, DTIERR=0x0, DTPASS=0x4, DGSL=1 extra clock, DGPS=90

<4>[ 0.000000] DDR DEBUG: DTONE=0x1, DTERR=0x0, DTIERR=0x0, DTPASS=0x4, DGSL=1 extra clock, DGPS=90

<4>[ 0.000000] DDR DEBUG: ZERR=0, ZDONE=0, ZPD=0x0, ZPU=0x0, OPD=0x0, OPU=0x0

<4>[ 0.000000] DDR DEBUG: DRV Pull-Up=0xb, DRV Pull-Dwn=0xb

<4>[ 0.000000] DDR DEBUG: ODT Pull-Up=0x2, ODT Pull-Dwn=0x2

<4>[ 0.000000] rk30_iomux_init

<4>[ 0.000000] Boot mode: 6 flag: 0xc3524200

<7>[ 0.000000] On node 0 totalpages: 237056

<7>[ 0.000000] free_area_init_node: node 0, pgdat c0aa6340, node_mem_map c152d000

<7>[ 0.000000] Normal zone: 1744 pages used for memmap

<7>[ 0.000000] Normal zone: 0 pages reserved

<7>[ 0.000000] Normal zone: 196400 pages, LIFO batch:31

<7>[ 0.000000] HighMem zone: 304 pages used for memmap

<7>[ 0.000000] HighMem zone: 38608 pages, LIFO batch:7

<6>[ 0.000000] PERCPU: Embedded 7 pages/cpu @c1d35000 s7072 r8192 d13408 u32768

<7>[ 0.000000] pcpu-alloc: s7072 r8192 d13408 u32768 alloc=8*4096

<7>[ 0.000000] pcpu-alloc: [0] 0 [0] 1

<4>[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 235008

<5>[ 0.000000] Kernel command line: console=ttyFIQ0 androidboot.console=ttyFIQ0 init=/init initrd=0x62000000,0x00180000 mtdparts=rk29xxnand:0x00002000@0x00002000(misc),0x00004000@0x00004000(kernel),0x00008000@0x00008000(boot),0x00010000@0x00010000(recovery),0x00020000@0x00020000(backup),0x00040000@0x00040000(cache),0x00200000@0x00080000(userdata),0x00002000@0x00280000(kpanic),0x00190000@0x00282000(system),-@0x00412000(user) bootver=2013-06-20#1.34 firmware_ver=4.1.1

<6>[ 0.000000] PID hash table entries: 4096 (order: 2, 16384 bytes)

<6>[ 0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)

<6>[ 0.000000] Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)

<6>[ 0.000000] Memory: 774MB 152MB = 926MB total

<5>[ 0.000000] Memory: 920020k/920020k available, 128556k reserved, 155648K highmem

<5>[ 0.000000] Virtual kernel memory layout:

<5>[ 0.000000] vector : 0xffff0000 – 0xffff1000 ( 4 kB)

<5>[ 0.000000] fixmap : 0xfff00000 – 0xfffe0000 ( 896 kB)

<5>[ 0.000000] DMA : 0xffc00000 – 0xffe00000 ( 2 MB)

<5>[ 0.000000] vmalloc : 0xf7000000 – 0xfe800000 ( 120 MB)

<5>[ 0.000000] lowmem : 0xc0000000 – 0xf6800000 ( 872 MB)

<5>[ 0.000000] pkmap : 0xbfe00000 – 0xc0000000 ( 2 MB)

<5>[ 0.000000] modules : 0xbf000000 – 0xbfe00000 ( 14 MB)

<5>[ 0.000000] .init : 0xc0408000 – 0xc048d000 ( 532 kB)

<5>[ 0.000000] .text : 0xc048d000 – 0xc0a411cc (5841 kB)

<5>[ 0.000000] .data : 0xc0a42000 – 0xc0aa6e60 ( 404 kB)

<5>[ 0.000000] .bss : 0xc0aaa024 – 0xc152c388 (10761 kB)

<6>[ 0.000000] SLUB: Genslabs=13, HWalign=32, Order=0-3, MinObjects=0, CPUs=2, Nodes=1

<6>[ 0.000000] Preemptible hierarchical RCU implementation.

<6>[ 0.000000] NR_IRQS:416

<4>[ 0.000000] rk30_gpio_init: 176 gpio irqs in 6 banks

<6>[ 0.000000] sched_clock: 32 bits at 24MHz, resolution 41ns, wraps every 178956ms

<6>[ 0.000000] Console: colour dummy device 80×30

<6>[ 0.004965] Calibrating delay loop (skipped) preset value.. 1631.46 BogoMIPS (lpj=8157341)

<6>[ 0.013833] pid_max: default: 32768 minimum: 301

<6>[ 0.019037] Mount-cache hash table entries: 512

<6>[ 0.024581] Initializing cgroup subsys debug

<6>[ 0.029240] Initializing cgroup subsys cpuacct

<6>[ 0.034099] Initializing cgroup subsys freezer

<6>[ 0.038983] CPU: Testing write buffer coherency: ok

<4>[ 0.145025] CPU1: Booted secondary processor

<6>[ 0.145071] Brought up 2 CPUs

<6>[ 0.152997] SMP: Total of 2 processors activated (3262.93 BogoMIPS).

<6>[ 0.160214] devtmpfs: initialized

<6>[ 0.171372] NET: Registered protocol family 16

<4>[ 0.176259] last_log: 0xf0100000 0xc0aae210

<4>[ 0.182918] ————[ cut here ]————

<4>[ 0.187958] WARNING: at drivers/gpio/gpiolib.c:101 gpio_ensure_requested+0x48/0x114()

<4>[ 0.196340] autorequest GPIO-183

<4>[ 0.199929] [<c04981c4>] (unwind_backtrace+0x0/0xf0) from [<c04c0ae0>] (warn_slowpath_common+0x4c/0x64)

<4>[ 0.210067] [<c04c0ae0>] (warn_slowpath_common+0x4c/0x64) from [<c04c0b78>] (warn_slowpath_fmt+0x2c/0x3c)

<4>[ 0.220438] [<c04c0b78>] (warn_slowpath_fmt+0x2c/0x3c) from [<c061a4f0>] (gpio_ensure_requested+0x48/0x114)

<4>[ 0.230984] [<c061a4f0>] (gpio_ensure_requested+0x48/0x114) from [<c061aba0>] (gpio_direction_output+0x7c/0xfc)

<4>[ 0.241938] [<c061aba0>] (gpio_direction_output+0x7c/0xfc) from [<c040e444>] (machine_rk30_board_init+0x34/0x288)

<4>[ 0.252985] [<c040e444>] (machine_rk30_board_init+0x34/0x288) from [<c040a4d8>] (customize_machine+0x1c/0x28)

<4>[ 0.263713] [<c040a4d8>] (customize_machine+0x1c/0x28) from [<c048d5d8>] (do_one_initcall+0x94/0x164)

<4>[ 0.273604] [<c048d5d8>] (do_one_initcall+0x94/0x164) from [<c0408350>] (kernel_init+0x88/0x130)

<4>[ 0.283027] [<c0408350>] (kernel_init+0x88/0x130) from [<c0493678>] (kernel_thread_exit+0x0/0x8)

<4>[ 0.292464] —[ end trace 1b75b31a2719ed1c ]—

<6>[ 0.398156] rk29sdk_wifi_bt_gpio_control_init: init finished

<6>[ 0.408723] console [ttyFIQ0] enabled, bootconsole disabled

<6>[ 0.414889] Registered FIQ tty driver f008fc00

<6>[ 0.426987] bio: create slab <bio-0> at 0

<4>[ 0.431222] wm831x_dcdc_init

<4>[ 0.431404] wm831x_ldo_init

<5>[ 0.431758] SCSI subsystem initialized

<6>[ 0.431971] usbcore: registered new interface driver usbfs

<6>[ 0.432043] usbcore: registered new interface driver hub

<6>[ 0.434252] usbcore: registered new device driver usb

<6>[ 0.434711] rk30_i2c rk30_i2c.0: i2c-0: RK30 I2C adapter

<6>[ 0.434938] rk30_i2c rk30_i2c.1: i2c-1: RK30 I2C adapter

<6>[ 0.435151] rk30_i2c rk30_i2c.2: i2c-2: RK30 I2C adapter

<6>[ 0.435260] rk30_i2c rk30_i2c.3: i2c-3: RK30 I2C adapter

<6>[ 0.435379] rk30_i2c rk30_i2c.4: i2c-4: RK30 I2C adapter

<6>[ 0.483138] rk30-adc rk30-adc: rk30 adc: driver initialized

<4>[ 0.483433] timed_gpio_probe

<6>[ 0.483524] Advanced Linux Sound Architecture Driver Version 1.0.24.

<6>[ 0.483920] Bluetooth: Core ver 2.16

<6>[ 0.483970] NET: Registered protocol family 31

<6>[ 0.483982] Bluetooth: HCI device and connection manager initialized

<6>[ 0.483999] Bluetooth: HCI socket layer initialized

<6>[ 0.484011] Bluetooth: L2CAP socket layer initialized

<6>[ 0.484036] Bluetooth: SCO socket layer initialized

<4>[ 0.485072] rk fb probe ok!

<4>[ 0.485164] wm831x_i2c_init

<6>[ 0.532516] cfg80211: Calling CRDA to update world regulatory domain

<3>[ 0.884439] rk30_i2c rk30_i2c.1: Addr[0x34] wait event timeout, state: 0, is_busy: 1, error: 0, complete_what: 0x0, ipd: 0x0

<4>[ 0.904437] rk30_i2c rk30_i2c.1: I2C_CON: start bit is set

<3>[ 0.924437] wm831x 1-0034: Failed to read parent ID: -110

<4>[ 0.924461] wm831x: probe of 1-0034 failed with error -110

<3>[ 1.324439] rk30_i2c rk30_i2c.1: Addr[0x2d] wait event timeout, state: 0, is_busy: 1, error: 0, complete_what: 0x2, ipd: 0x20

<3>[ 1.364436] tps65910 1-002d: tps65910_set_bits:read from reg 3f failed

<3>[ 1.764438] rk30_i2c rk30_i2c.1: Addr[0x2d] wait event timeout, state: 0, is_busy: 1, error: 0, complete_what: 0x2, ipd: 0x20

<3>[ 1.804436] tps65910 1-002d: read from reg 46 failed

<3>[ 1.804451] tps65910 1-002d: Error in configuring external control EN1

<4>[ 1.804465] tps65910 1-002d: Failed to initialise ext control config

<3>[ 2.204439] rk30_i2c rk30_i2c.1: Addr[0x2d] wait event timeout, state: 0, is_busy: 1, error: 0, complete_what: 0x2, ipd: 0x20

<3>[ 2.244436] tps65910 1-002d: tps65910_set_bits:read from reg 20 failed

<3>[ 2.244453] set_machine_constraints: VIO: failed to enable

<3>[ 2.244515] tps65910 1-002d: failed to register tps65910-pmic regulator

<4>[ 2.244536] tps65910-pmic: probe of tps65910-pmic failed with error -110

<4>[ 2.244680] tps65910_pre_init,line=38

<3>[ 2.644440] rk30_i2c rk30_i2c.1: Addr[0x2d] wait event timeout, state: 0, is_busy: 1, error: 0, complete_what: 0x2, ipd: 0x20

<3>[ 2.684437] tps65910 1-002d: Read from reg 0x40 failed

<3>[ 2.684451] Unable to read TPS65910_DEVCTRL2 reg

<3>[ 2.684463] tps65910 1-002d: pre_init() failed: -110

<4>[ 2.684601] tps65910: probe of 1-002d failed with error -110

<6>[ 2.684808] Switching to clocksource timer1

<4>[ 2.685016] lcdc0:reg_phy_base = 0x1010c000,reg_vir_base:0xf701c000

<4>[ 2.685049] fb0:win1

<4>[ 2.685052] fb1:win0

<4>[ 2.685056] fb2:win2

<6>[ 2.685065] Switched to NOHz mode on CPU #1

<4>[ 2.685153] lcdc0: dclk:33000000>>fps:59 rk30_load_screen for lcdc0 ok!

<6>[ 2.694437] Switched to NOHz mode on CPU #0

<4>[ 2.713630] fb0:phy:90c00000>>vir:f8000000>>len:0xc00000

<4>[ 2.713896] rk_fb_register>>>>>fb0

<4>[ 2.714053] rk_fb_register>>>>>fb1

<4>[ 2.714227] rk_fb_register>>>>>fb2

<4>[ 2.714240] lcdc0 wakeup from stanby

<6>[ 2.714250] lcdc0 win1 open

<4>[ 2.731799] rk30 lcdc0 probe ok!

<4>[ 2.731858] lcdc1:reg_phy_base = 0x1010e000,reg_vir_base:0xf7028000

<4>[ 2.731891] fb0:win1

<4>[ 2.731895] fb1:win0

<4>[ 2.731898] fb2:win2

<4>[ 2.731952] lcdc1: dclk:74250000>>fps:60 rk30_load_screen for lcdc1 ok!

<4>[ 2.731974] fb3:phy:90c00000>>vir:f8000000>>len:0xc00000

<4>[ 2.732253] rk_fb_register>>>>>fb3

<4>[ 2.732420] rk_fb_register>>>>>fb4

<4>[ 2.732568] rk_fb_register>>>>>fb5

<4>[ 2.732579] rk30 lcdc1 probe ok!

<4>[ 2.732637] ————————————————-boot with some other pmu,this is important notify————————————————-pwm_regulator_probe:n_voltages=17

<4>[ 2.732844] pwm_regulator.0: driver initialized

<4>[ 2.732856] rk30 pwm regulator is ok with pmu tps65910

<4>[ 2.742902] pwm_regulator_probe set vdd_core=1100000mV end

<4>[ 2.870731] regbase f7080000 0x0, otg_phy_confed08184, 0x550

<6>[ 2.920980] rk30_adc_battery: driver initialized

<6>[ 2.921245] NET: Registered protocol family 2

<6>[ 2.921372] IP route cache hash table entries: 32768 (order: 5, 131072 bytes)

<6>[ 2.921722] TCP established hash table entries: 131072 (order: 8, 1048576 bytes)

<6>[ 2.923559] TCP bind hash table entries: 65536 (order: 7, 786432 bytes)

<6>[ 2.924621] TCP: Hash tables configured (established 131072 bind 65536)

<6>[ 2.924635] TCP reno registered

<6>[ 2.924648] UDP hash table entries: 512 (order: 2, 16384 bytes)

<6>[ 2.924687] UDP-Lite hash table entries: 512 (order: 2, 16384 bytes)

<6>[ 2.925056] NET: Registered protocol family 1

<4>[ 2.925231] RK29 Backlight Driver Initialized.

<6>[ 2.925425] Unpacking initramfs…

<6>[ 3.000775] Freeing initrd memory: 1536K

<6>[ 3.000973] rk30-tsadc rk30-tsadc: initialized

<6>[ 3.001830] Loaded driver for PL330 DMAC-1 rk29-pl330

<6>[ 3.001847] DBUFF-32x8bytes Num_Chans-6 Num_Peri-12 Num_Events-12

<6>[ 3.002002] Loaded driver for PL330 DMAC-2 rk29-pl330

<6>[ 3.002017] DBUFF-64x8bytes Num_Chans-7 Num_Peri-20 Num_Events-14

<4>[ 3.009188] highmem bounce pool size: 64 pages

<6>[ 3.009376] ashmem: initialized

<6>[ 3.014384] fuse init (API version 7.16)

<6>[ 3.015969] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 252)

<6>[ 3.015988] io scheduler noop registered

<6>[ 3.015998] io scheduler deadline registered

<6>[ 3.016056] io scheduler cfq registered (default)

<6>[ 3.022108] rga: Driver loaded succesfully

<4>[ 3.022746] rk_serial.c v1.3 2012-12-14

<6>[ 3.022838] rk_serial.0: ttyS0 at MMIO 0x10124000 (irq = 66) is a rk29_serial.0

<6>[ 3.044916] rk_serial rk_serial.0: membase 0xf704c000

<6>[ 3.044980] rk_serial.3: ttyS3 at MMIO 0x20068000 (irq = 69) is a rk29_serial.3

<6>[ 3.084869] rk_serial rk_serial.3: membase 0xf7050000

<6>[ 3.085144] Rockchip ion module(version: 1.0) is successfully loaded

<6>[ 3.087680] loop: module loaded

<6>[ 3.087788] Android kernel panic handler initialized (bind=kpanic)

<6>[ 3.088503] PPP generic driver version 2.4.2

<6>[ 3.088688] PPP Deflate Compression module registered

<6>[ 3.088701] PPP BSD Compression module registered

<6>[ 3.089295] PPP MPPE Compression module registered

<6>[ 3.089311] NET: Registered protocol family 24

<6>[ 3.089390] usbcore: registered new interface driver asix

<6>[ 3.089440] usbcore: registered new interface driver cdc_ether

<6>[ 3.089486] usbcore: registered new interface driver dm9620

<6>[ 3.089532] usbcore: registered new interface driver SR9700_android

<6>[ 3.089577] usbcore: registered new interface driver net1080

<6>[ 3.089621] usbcore: registered new interface driver cdc_subset

<6>[ 3.089674] usbcore: registered new interface driver zaurus

<6>[ 3.089697] cdc_ncm: 04-Aug-2011

<6>[ 3.089741] usbcore: registered new interface driver cdc_ncm

<4>[ 3.089753] Rockchip WiFi SYS interface (V1.00) …

<6>[ 3.089797] Initializing USB Mass Storage driver…

<6>[ 3.089858] usbcore: registered new interface driver usb-storage

<6>[ 3.089870] USB Mass Storage support registered.

<6>[ 3.089988] usbcore: registered new interface driver usbserial

<6>[ 3.090033] USB Serial support registered for generic

<6>[ 3.090086] usbcore: registered new interface driver usbserial_generic

<6>[ 3.090099] usbserial: USB Serial Driver core

<6>[ 3.090139] USB Serial support registered for GSM modem (1-port)

<6>[ 3.090193] usbcore: registered new interface driver option

<6>[ 3.090205] option: v0.7.2:USB Driver for GSM modems

<6>[ 3.300992] DWC_OTG: ^^^^^^^^^^^^^^^^^Device Mode

<6>[ 3.301017] usb20_otg usb20_otg: DWC OTG Controller

<6>[ 3.301042] usb20_otg usb20_otg: new USB bus registered, assigned bus number 1

<6>[ 3.301072] usb20_otg usb20_otg: irq 48, io mem 0x00000000

<6>[ 3.301081] DWC_OTG: dwc_otg_hcd_start controller in device mode,everest

<6>[ 3.301128] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002

<6>[ 3.301141] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1

<6>[ 3.301151] usb usb1: Product: DWC OTG Controller

<6>[ 3.301159] usb usb1: Manufacturer: Linux 3.0.8+ dwc_otg_hcd

<6>[ 3.301167] usb usb1: SerialNumber: usb20_otg

<6>[ 3.301501] hub 1-0:1.0: USB hub found

<6>[ 3.301516] hub 1-0:1.0: 1 port detected

<6>[ 3.302100] DWC_OTG: host20_driver_probe host2.0 reg addr: 0x101c0000 remap:0xf7180000

<6>[ 3.512773] DWC_OTG: ^^^^^^^^^^^^^^^^^^Host Mode

<6>[ 3.512796] usb20_host usb20_host: DWC OTG Controller

<6>[ 3.512818] usb20_host usb20_host: new USB bus registered, assigned bus number 2

<6>[ 3.512845] usb20_host usb20_host: irq 49, io mem 0x00000000

<6>[ 3.512887] DWC_OTG: Init: Port Power? op_state=1

<6>[ 3.512895] DWC_OTG: Init: Power Port (0)

<6>[ 3.512933] usb usb2: New USB device found, idVendor=1d6b, idProduct=0002

<6>[ 3.512945] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1

<6>[ 3.512955] usb usb2: Product: DWC OTG Controller

<6>[ 3.512963] usb usb2: Manufacturer: Linux 3.0.8+ host20_hcd

<6>[ 3.512971] usb usb2: SerialNumber: usb20_host

<6>[ 3.513248] hub 2-0:1.0: USB hub found

<6>[ 3.513263] hub 2-0:1.0: 1 port detected

<6>[ 3.514441] android_usb gadget: Mass Storage Function, version: 2009/09/11

<6>[ 3.514453] android_usb gadget: Number of LUNs=2

<6>[ 3.514462] lun0: LUN: removable file: (no medium)

<6>[ 3.514471] lun1: LUN: removable file: (no medium)

<6>[ 3.514625] android_usb gadget: android_usb ready

<6>[ 3.514812] input: rk29-keypad as /devices/platform/rk29-keypad/input/input0

<4>[ 3.515006] ==gsl_ts_init==

<4>[ 3.515038] GSLX680 Enter gsl_ts_probe

<4>[ 3.515045] ==kzalloc success=

<4>[ 3.515051] [GSLX680] Enter gslX680_ts_init

<6>[ 3.515241] input: gslX680 as /devices/platform/rk30_i2c.2/i2c-2/2-0040/input/input1

<4>[ 3.605422] I read reg 0xf0 is 0

<4>[ 3.625190] I write reg 0xf0 0x12

<4>[ 3.645345] I read reg 0xf0 is 0x12

<3>[ 3.645687] i2c i2c-2: No ack, Maybe slave(addr: 0x40) not exist or abnormal power-on, retry 2…

<3>[ 3.646027] i2c i2c-2: No ack, Maybe slave(addr: 0x40) not exist or abnormal power-on, retry 1…

<3>[ 3.646366] i2c i2c-2: No ack, Maybe slave(addr: 0x40) not exist or abnormal power-on, retry 0…

<3>[ 3.745366] i2c i2c-2: No ack, Maybe slave(addr: 0x40) not exist or abnormal power-on, retry 2…

<3>[ 3.745875] i2c i2c-2: No ack, Maybe slave(addr: 0x40) not exist or abnormal power-on, retry 1…

<3>[ 3.746372] i2c i2c-2: No ack, Maybe slave(addr: 0x40) not exist or abnormal power-on, retry 0…