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how to change the device name of tw6865 in the IMX6q?I want change the name "video16" to "video0"

Question asked by hu bing on Oct 16, 2015
Latest reply on Oct 26, 2015 by hu bing

this is the boot log:

Linux version 3.0.35-2666-gbdde708 (hubing@hubing-desktop) (gcc version 4.6.2 20110630 (prerelease) (Freescale MAD -- Linaro 2011.07 -- Built at 2011/08/10 09:20) ) #3 SMP PREEMPT Thu Oct 15 18:45:06 CST 2015

CPU: ARMv7 Processor [412fc09a] revision 10 (ARMv7), cr=10c53c7d

CPU: VIPT nonaliasing data cache, VIPT aliasing instruction cache

Machine: Freescale i.MX 6Quad/DualLite/Solo Sabre-SD Board

Ignoring unrecognised tag 0x54410008

Memory policy: ECC disabled, Data cache writealloc

CPU identified as i.MX6Q, silicon rev 1.2

On node 0 totalpages: 196608

free_area_init_node: node 0, pgdat 80b2d900, node_mem_map 8b800000

  DMA zone: 368 pages used for memmap

  DMA zone: 0 pages reserved

  DMA zone: 46736 pages, LIFO batch:15

  Normal zone: 1680 pages used for memmap

  Normal zone: 147824 pages, LIFO batch:31

PERCPU: Embedded 7 pages/cpu @8c008000 s5440 r8192 d15040 u32768

pcpu-alloc: s5440 r8192 d15040 u32768 alloc=8*4096

pcpu-alloc: [0] 0 [0] 1 [0] 2 [0] 3

Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 194560

Kernel command line: console=ttymxc0,115200 ip=none root=/dev/mmcblk0p1 rootwait

PID hash table entries: 4096 (order: 2, 16384 bytes)

Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)

Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)

Memory: 512MB 256MB = 768MB total

Memory: 765528k/765528k available, 283048k reserved, 0K highmem

Virtual kernel memory layout:

    vector  : 0xffff0000 - 0xffff1000   (   4 kB)

    fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)

    DMA     : 0xf4600000 - 0xffe00000   ( 184 MB)

    vmalloc : 0xc0800000 - 0xf2000000   ( 792 MB)

    lowmem  : 0x80000000 - 0xc0000000   (1024 MB)

    pkmap   : 0x7fe00000 - 0x80000000   (   2 MB)

    modules : 0x7f000000 - 0x7fe00000   (  14 MB)

      .init : 0x80008000 - 0x8003d000   ( 212 kB)

      .text : 0x8003d000 - 0x80ac9ea0   (10804 kB)

      .data : 0x80aca000 - 0x80b2ea60   ( 403 kB)

       .bss : 0x80b2ea84 - 0x80b7cf4c   ( 314 kB)

SLUB: Genslabs=13, HWalign=32, Order=0-3, MinObjects=0, CPUs=4, Nodes=1

Preemptible hierarchical RCU implementation.

NR_IRQS:624

MXC GPIO hardware

sched_clock: 32 bits at 3000kHz, resolution 333ns, wraps every 1431655ms

arm_max_freq=1GHz

MXC_Early serial console at MMIO 0x2020000 (options '115200')

bootconsole [ttymxc0] enabled

Console: colour dummy device 80x30

Calibrating delay loop... 1581.05 BogoMIPS (lpj=7905280)

pid_max: default: 32768 minimum: 301

Mount-cache hash table entries: 512

CPU: Testing write buffer coherency: ok

hw perfevents: enabled with ARMv7 Cortex-A9 PMU driver, 7 counters available

CPU1: Booted secondary processor

CPU2: Booted secondary processor

CPU3: Booted secondary processor

Brought up 4 CPUs

SMP: Total of 4 processors activated (6324.22 BogoMIPS).

print_constraints: dummy:

NET: Registered protocol family 16

print_constraints: vddpu: 725 <--> 1300 mV at 700 mV fast normal

print_constraints: vddcore: 725 <--> 1300 mV at 1150 mV fast normal

print_constraints: vddsoc: 725 <--> 1300 mV at 1200 mV fast normal

print_constraints: vdd2p5: 2000 <--> 2775 mV at 2400 mV fast normal

print_constraints: vdd1p1: 800 <--> 1400 mV at 1100 mV fast normal

print_constraints: vdd3p0: 2625 <--> 3400 mV at 3000 mV fast normal

hw-breakpoint: found 6 breakpoint and 1 watchpoint registers.

hw-breakpoint: 1 breakpoint(s) reserved for watchpoint single-step.

hw-breakpoint: maximum watchpoint size is 4 bytes.

L310 cache controller enabled

l2x0: 16 ways, CACHE_ID 0x410000c7, AUX_CTRL 0x02070000, Cache size: 1048576 B

bio: create slab <bio-0> at 0

mxs-dma mxs-dma-apbh: initialized

print_constraints: SPKVDD: 4200 mV

print_constraints: 1_8V: 1800 mV

print_constraints: MICVDD: 3300 mV

print_constraints: vmmc: 3300 mV

vgaarb: loaded

SCSI subsystem initialized

libata version 3.00 loaded.

spi_imx imx6q-ecspi.0: probed

spi_imx imx6q-ecspi.1: probed

usbcore: registered new interface driver usbfs

usbcore: registered new interface driver hub

usbcore: registered new device driver usb

Freescale USB OTG Driver loaded, $Revision: 1.55 $

imx-ipuv3 imx-ipuv3.0: IPU DMFC NORMAL mode: 1(0~1), 5B(4,5), 5F(6,7)

imx-ipuv3 imx-ipuv3.1: IPU DMFC NORMAL mode: 1(0~1), 5B(4,5), 5F(6,7)

mxc_mipi_csi2 mxc_mipi_csi2: i.MX MIPI CSI2 driver probed

mxc_mipi_csi2 mxc_mipi_csi2: i.MX MIPI CSI2 dphy version is 0x3130302a

MIPI CSI2 driver module loaded

Advanced Linux Sound Architecture Driver Version 1.0.24.

Bluetooth: Core ver 2.16

NET: Registered protocol family 31

Bluetooth: HCI device and connection manager initialized

Bluetooth: HCI socket layer initialized

Bluetooth: L2CAP socket layer initialized

Bluetooth: SCO socket layer initialized

cfg80211: Calling CRDA to update world regulatory domain

max17135_regulator_init abort: EPDC not enabled

max17135 2-0048: PMIC MAX17135 for eInk display

i2c-core: driver [max17135] using legacy suspend method

i2c-core: driver [max17135] using legacy resume method

Switching to clocksource mxc_timer1

NET: Registered protocol family 2

IP route cache hash table entries: 32768 (order: 5, 131072 bytes)

TCP established hash table entries: 131072 (order: 8, 1048576 bytes)

TCP bind hash table entries: 65536 (order: 7, 786432 bytes)

TCP: Hash tables configured (established 131072 bind 65536)

TCP reno registered

UDP hash table entries: 512 (order: 2, 16384 bytes)

UDP-Lite hash table entries: 512 (order: 2, 16384 bytes)

NET: Registered protocol family 1

RPC: Registered named UNIX socket transport module.

RPC: Registered udp transport module.

RPC: Registered tcp transport module.

RPC: Registered tcp NFSv4.1 backchannel transport module.

PCI: CLS 0 bytes, default 32

PMU: registered new PMU device of type 0

Static Power Management for Freescale i.MX6

wait mode is enabled for i.MX6

cpaddr = c0880000 suspend_iram_base=c0934000

PM driver module loaded

iMX6 PCIe PCIe RC mode imx_pcie_pltfm_probe entering.

PCIE: imx_pcie_pltfm_probe start link up.

link up failed, DB_R0:0x00427400, DB_R1:0x08200000!

IMX PCIe port: link down!

IMX usb wakeup probe

the wakeup pdata is 0xbfd29840

add wake up source irq 75

IMX usb wakeup probe

the wakeup pdata is 0xbfd291c0

cpu regulator mode:ldo_enable

i.MXC CPU frequency driver

JFFS2 version 2.2. (NAND) © 2001-2006 Red Hat, Inc.

msgmni has been set to 1495

alg: No test for stdrng (krng)

io scheduler noop registered

io scheduler deadline registered

io scheduler cfq registered (default)

mxc_mipi_dsi mxc_mipi_dsi: i.MX MIPI DSI driver probed

MIPI DSI driver module loaded

mxc_sdc_fb mxc_sdc_fb.0: register mxc display driver ldb

_regulator_get: get() with no identifier

imx-ipuv3 imx-ipuv3.1: IPU DMFC DP HIGH RESOLUTION: 1(0,1), 5B(2~5), 5F(6,7)

Console: switching to colour frame buffer device 128x37

mxc_sdc_fb mxc_sdc_fb.1: register mxc display driver ldb

mxc_sdc_fb mxc_sdc_fb.2: register mxc display driver lcd

mxc_sdc_fb mxc_sdc_fb.3: register mxc display driver ldb

mxc_sdc_fb mxc_sdc_fb.3: ipu1-di0 already in use

mxc_sdc_fb: probe of mxc_sdc_fb.3 failed with error -16

imx-sdma imx-sdma: loaded firmware 1.1

imx-sdma imx-sdma: initialized

Serial: IMX driver

imx-uart.0: ttymxc0 at MMIO 0x2020000 (irq = 58) is a IMX

console [ttymxc0] enabled, bootconsole disabled

imx-uart.1: ttymxc1 at MMIO 0x21e8000 (irq = 59) is a IMX

imx-uart.2: ttymxc2 at MMIO 0x21ec000 (irq = 60) is a IMX

imx-uart.3: ttymxc3 at MMIO 0x21f0000 (irq = 61) is a IMX

imx-uart.4: ttymxc4 at MMIO 0x21f4000 (irq = 62) is a IMX

loop: module loaded

No sata disk.

m25p80 spi0.0: sst25vf016b (2048 Kbytes)

Creating 2 MTD partitions on "m25p80":

0x000000000000-0x000000100000 : "bootloader"

0x000000100000-0x000000200000 : "kernel"

GPMI NAND driver registered. (IMX)

vcan: Virtual CAN interface driver

CAN device driver interface

flexcan netdevice driver

flexcan imx6q-flexcan.0: device registered (reg_base=c09f0000, irq=142)

flexcan imx6q-flexcan.1: device registered (reg_base=c09f8000, irq=143)

FEC Ethernet Driver

fec_enet_mii_bus: probed

usbcore: registered new interface driver smsc95xx

ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver

fsl-ehci fsl-ehci.0: Freescale On-Chip EHCI Host Controller

fsl-ehci fsl-ehci.0: new USB bus registered, assigned bus number 1

fsl-ehci fsl-ehci.0: irq 75, io base 0x02184000

fsl-ehci fsl-ehci.0: USB 2.0 started, EHCI 1.00

hub 1-0:1.0: USB hub found

hub 1-0:1.0: 1 port detected

add wake up source irq 72

fsl-ehci fsl-ehci.1: Freescale On-Chip EHCI Host Controller

fsl-ehci fsl-ehci.1: new USB bus registered, assigned bus number 2

fsl-ehci fsl-ehci.1: irq 72, io base 0x02184200

fsl-ehci fsl-ehci.1: USB 2.0 started, EHCI 1.00

hub 2-0:1.0: USB hub found

hub 2-0:1.0: 1 port detected

Initializing USB Mass Storage driver...

usbcore: registered new interface driver usb-storage

USB Mass Storage support registered.

ARC USBOTG Device Controller driver (1 August 2005)

mousedev: PS/2 mouse device common for all mice

input: gpio-keys as /devices/platform/gpio-keys/input/input0

usb 2-1: new high speed USB device number 2 using fsl-ehci

elan - Read Hello Packet Failed

elan-touch: probe of 2-0010 failed with error -22

====ft5x0x_ts_probe

[FST] Firmware version = 0x6

====client->irq===432

input: ft5x0x_ts as /devices/virtual/input/input1

i2c-core: driver [isl29023] using legacy suspend method

i2c-core: driver [isl29023] using legacy resume method

rtc-isl1208 0-006f: chip found, driver version 0.3

rtc-isl1208 0-006f: rtc core: registered rtc-isl1208 as rtc0

rtc-isl1208 0-006f: rtc power failure detected, please set clock.

snvs_rtc snvs_rtc.0: rtc core: registered snvs_rtc as rtc1

i2c /dev entries driver

Linux video capture interface: v2.00

TW6868_: v4l2 driver version 2.0.1 loaded

mxc_v4l2_output mxc_v4l2_output.0: V4L2 device registered as video16

mxc_v4l2_output mxc_v4l2_output.0: V4L2 device registered as video17

mxc_v4l2_output mxc_v4l2_output.0: V4L2 device registered as video18

mxc_v4l2_output mxc_v4l2_output.0: V4L2 device registered as video19

mxc_v4l2_output mxc_v4l2_output.0: V4L2 device registered as video20

mag3110 2-000e: check mag3110 chip ID

 

I want to know how to change "video16" to "video0"?

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