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楼主 # 2022-06-22 10:07:59

zhang235hai
会员
注册时间: 2020-04-06
已发帖子: 198
积分: 151

自己弄的V3X板子液晶屏没有输出

使用的是https://whycan.com/t_7248.html 固件
没有如帖子中所说显示荷花
执行cat /dev/zero > /dev/fb0 和 cat /dev/urandom > /dev/fb0命令提示如下:
# cat /dev/zero > /dev/fb0
cat: write error: No space left on device
_20220622100721.jpg
启动信息如下:

U-Boot 2021.07 (Oct 24 2021 - 18:41:20 +0800) Allwinner Technology

CPU:   Allwinner V3s (SUN8I 1681)
Model: Smallwit Pi Lite
DRAM:  128 MiB
MMC:   mmc@1c0f000: 0
Loading Environment from nowhere... OK
In:    serial@1c28000
Out:   serial@1c28000
Err:   serial@1c28000
Net:   No ethernet found.
Hit any key to stop autoboot:  0 
switch to partitions #0, OK
mmc0 is current device
MMC Device 1 not found
no mmc device at slot 1
jedec_spi_nor spi_flash@0:0: unrecognized JEDEC id bytes: ff, ff, ff
Failed to initialize SPI flash at 0:0 (error -2)
Unknown command 'mtd' - try 'help'
=========================
Boot Device: mmc0
Boot Slot 0: mmc0
Boot Slot 1: empty
=========================
DFU waiting on MMC0...
switch to partitions #0, OK
mmc0 is current device
Unknown command 'dfu' - try 'help'
switch to partitions #0, OK
mmc0 is current device
Booting from MMC0...
4223184 bytes read in 234 ms (17.2 MiB/s)
13716 bytes read in 2 ms (6.5 MiB/s)
Kernel image @ 0x40000000 [ 0x000000 - 0x4070d0 ]
## Flattened Device Tree blob at 40700000
   Booting using the fdt blob at 0x40700000
   Loading Device Tree to 416f9000, end 416ff593 ... OK

Starting kernel ...

[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Linux version 5.4.70-smallwitpi (whycan@ubuntu) (gcc version 7.3.1 20180425 [linaro-7.3-2018.05 revision d29120a424ecfbc167ef90065c0eeb7f91977701] (Linaro GCC 7.3-2018.05)) #2 SMP Sun Oct 24 19:40:26 CST 2021
[    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: SMALLWITPY
[    0.000000] Memory policy: Data cache writealloc
[    0.000000] cma: Reserved 16 MiB at 0x46c00000
[    0.000000] psci: probing for conduit method from DT.
[    0.000000] psci: Using PSCI v0.1 Function IDs from DT
[    0.000000] percpu: Embedded 15 pages/cpu s30668 r8192 d22580 u61440
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 32512
[    0.000000] Kernel command line: console=ttyS0,115200 earlyprintk rootwait consoleblank=0 net.ifnames=0 biosdevname=0 root=/dev/mmcblk0p3
[    0.000000] Dentry cache hash table entries: 16384 (order: 4, 65536 bytes, linear)
[    0.000000] Inode-cache hash table entries: 8192 (order: 3, 32768 bytes, linear)
[    0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off
[    0.000000] Memory: 103488K/131072K available (6144K kernel code, 410K rwdata, 1804K rodata, 1024K init, 251K bss, 11200K reserved, 16384K cma-reserved, 0K highmem)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[    0.000000] rcu: Hierarchical RCU implementation.
[    0.000000] rcu:     RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=1.
[    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=1
[    0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16
[    0.000000] GIC: GICv2 detected, but range too small and irqchip.gicv2_force_probe not set
[    0.000000] random: get_random_bytes called from start_kernel+0x2b4/0x44c 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
[    0.000012] sched_clock: 56 bits at 24MHz, resolution 41ns, wraps every 4398046511097ns
[    0.000029] Switching to timer-based delay loop, resolution 41ns
[    0.000433] clocksource: timer: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 79635851949 ns
[    0.000888] Console: colour dummy device 80x30
[    0.000991] Calibrating delay loop (skipped), value calculated using timer frequency.. 48.00 BogoMIPS (lpj=240000)
[    0.001014] pid_max: default: 32768 minimum: 301
[    0.001300] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
[    0.001325] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
[    0.001503] *** VALIDATE tmpfs ***
[    0.002553] *** VALIDATE proc ***
[    0.002851] *** VALIDATE cgroup1 ***
[    0.002875] *** VALIDATE cgroup2 ***
[    0.002904] CPU: Testing write buffer coherency: ok
[    0.003843] /cpus/cpu@0 missing clock-frequency property
[    0.003890] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
[    0.005208] Setting up static identity map for 0x40100000 - 0x40100060
[    0.005598] rcu: Hierarchical SRCU implementation.
[    0.006532] smp: Bringing up secondary CPUs ...
[    0.006570] smp: Brought up 1 node, 1 CPU
[    0.006581] SMP: Total of 1 processors activated (48.00 BogoMIPS).
[    0.006591] CPU: All CPU(s) started in HYP mode.
[    0.006599] CPU: Virtualization extensions available.
[    0.007783] devtmpfs: initialized
[    0.013907] VFP support v0.3: implementor 41 architecture 2 part 30 variant 7 rev 5
[    0.014481] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[    0.014531] futex hash table entries: 256 (order: 2, 16384 bytes, linear)
[    0.015787] pinctrl core: initialized pinctrl subsystem
[    0.017880] NET: Registered protocol family 16
[    0.020583] DMA: preallocated 256 KiB pool for atomic coherent allocations
[    0.022737] hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint registers.
[    0.022764] hw-breakpoint: maximum watchpoint size is 8 bytes.
[    0.049860] SCSI subsystem initialized
[    0.050289] usbcore: registered new interface driver usbfs
[    0.050659] usbcore: registered new interface driver hub
[    0.050838] usbcore: registered new device driver usb
[    0.051243] mc: Linux media interface: v0.10
[    0.051304] videodev: Linux video capture interface: v2.00
[    0.051360] pps_core: LinuxPPS API ver. 1 registered
[    0.051370] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[    0.051402] PTP clock support registered
[    0.054188] clocksource: Switched to clocksource arch_sys_counter
[    0.054708] *** VALIDATE ramfs ***
[    0.071991] thermal_sys: Registered thermal governor 'step_wise'
[    0.072677] NET: Registered protocol family 2
[    0.073995] tcp_listen_portaddr_hash hash table entries: 512 (order: 0, 6144 bytes, linear)
[    0.074055] TCP established hash table entries: 1024 (order: 0, 4096 bytes, linear)
[    0.074278] TCP bind hash table entries: 1024 (order: 1, 8192 bytes, linear)
[    0.074314] TCP: Hash tables configured (established 1024 bind 1024)
[    0.074627] UDP hash table entries: 256 (order: 1, 8192 bytes, linear)
[    0.074726] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes, linear)
[    0.075185] NET: Registered protocol family 1
[    0.078493] Initialise system trusted keyrings
[    0.079156] workingset: timestamp_bits=30 max_order=15 bucket_order=0
[    0.089776] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[    0.090343] utf8_selftest: All 154 tests passed
[    0.090360] jffs2: version 2.2. (NAND) © 2001-2006 Red Hat, Inc.
[    0.091234] *** VALIDATE jffs2 ***
[    0.140308] Key type asymmetric registered
[    0.140341] Asymmetric key parser 'x509' registered
[    0.140509] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 248)
[    0.140529] io scheduler mq-deadline registered
[    0.140540] io scheduler kyber registered
[    0.140547] test_strscpy: loaded.
[    0.140581] test_strscpy: all 32 tests passed
[    0.142295] sun4i-usb-phy 1c19400.phy: Couldn't request ID GPIO
[    0.149062] sun8i-v3s-pinctrl 1c20800.pinctrl: initialized sunXi PIO driver
[    0.150067] sun8i-v3s-pinctrl 1c20800.pinctrl: 1c20800.pinctrl supply vcc-pb not found, using dummy regulator
[    0.151400] pwm-backlight backlight: backlight supply power not found, using dummy regulator
[    0.329728] Serial: 8250/16550 driver, 8 ports, IRQ sharing disabled
[    0.337107] printk: console [ttyS0] disabled
[    0.357587] 1c28000.serial: ttyS0 at MMIO 0x1c28000 (irq = 32, base_baud = 1500000) is a U6_16550A
[    0.967993] printk: console [ttyS0] enabled
[    0.973520] sun8i-v3s-pinctrl 1c20800.pinctrl: 1c20800.pinctrl supply vcc-pe not found, using dummy regulator
[    1.005897] 1c28400.serial: ttyS1 at MMIO 0x1c28400 (irq = 33, base_baud = 1500000) is a U6_16550A
[    1.038341] 1c28800.serial: ttyS2 at MMIO 0x1c28800 (irq = 34, base_baud = 1500000) is a U6_16550A
[    1.083943] panel-simple panel: panel supply power not found, using dummy regulator
[    1.095121] sun8i-v3s-pinctrl 1c20800.pinctrl: 1c20800.pinctrl supply vcc-pc not found, using dummy regulator
[    1.107637] spi-nor spi0.0: unrecognized JEDEC id bytes: ff ff ff ff ff ff
[    1.115978] libphy: Fixed MDIO Bus: probed
[    1.120726] dwmac-sun8i 1c30000.ethernet: IRQ eth_wake_irq not found
[    1.127298] dwmac-sun8i 1c30000.ethernet: IRQ eth_lpi not found
[    1.133505] dwmac-sun8i 1c30000.ethernet: PTP uses main clock
[    1.139435] dwmac-sun8i 1c30000.ethernet: No regulator found
[    1.146373] dwmac-sun8i 1c30000.ethernet: No HW DMA feature register supported
[    1.153630] dwmac-sun8i 1c30000.ethernet: RX Checksum Offload Engine supported
[    1.160979] dwmac-sun8i 1c30000.ethernet: COE Type 2
[    1.165982] dwmac-sun8i 1c30000.ethernet: TX Checksum insertion supported
[    1.172767] dwmac-sun8i 1c30000.ethernet: Normal descriptors
[    1.178443] dwmac-sun8i 1c30000.ethernet: Chain mode enabled
[    1.184145] dwmac-sun8i 1c30000.ethernet: device MAC address 06:91:ac:02:b2:94
[    1.191828] libphy: stmmac: probed
[    1.196508] dwmac-sun8i 1c30000.ethernet: Found internal PHY node
[    1.202952] libphy: mdio_mux: probed
[    1.206738] dwmac-sun8i 1c30000.ethernet: Switch mux to internal PHY
[    1.213106] dwmac-sun8i 1c30000.ethernet: Powering internal PHY
[    1.221766] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    1.228530] ehci-platform: EHCI generic platform driver
[    1.234369] ehci-platform 1c1a000.usb: EHCI Host Controller
[    1.240031] ehci-platform 1c1a000.usb: new USB bus registered, assigned bus number 1
[    1.248658] ehci-platform 1c1a000.usb: irq 24, io mem 0x01c1a000
[    1.284149] ehci-platform 1c1a000.usb: USB 2.0 started, EHCI 1.00
[    1.292155] hub 1-0:1.0: USB hub found
[    1.296300] hub 1-0:1.0: 1 port detected
[    1.301378] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[    1.307830] ohci-platform: OHCI generic platform driver
[    1.313646] ohci-platform 1c1a400.usb: Generic Platform OHCI controller
[    1.320464] ohci-platform 1c1a400.usb: new USB bus registered, assigned bus number 2
[    1.329004] ohci-platform 1c1a400.usb: irq 25, io mem 0x01c1a400
[    1.412597] hub 2-0:1.0: USB hub found
[    1.416704] hub 2-0:1.0: 1 port detected
[    1.421947] usbcore: registered new interface driver usb-storage
[    1.429572] mousedev: PS/2 mouse device common for all mice
[    1.436233] i2c /dev entries driver
[    1.443551] sunxi-wdt 1c20ca0.watchdog: Watchdog enabled (timeout=16 sec, nowayout=0)
[    1.452971] sun8i-v3s-pinctrl 1c20800.pinctrl: 1c20800.pinctrl supply vcc-pf not found, using dummy regulator
[    1.491174] sunxi-mmc 1c0f000.mmc: initialized, max. request size: 16384 KB
[    1.499992] usbcore: registered new interface driver usbhid
[    1.505733] usbhid: USB HID core driver
[    1.511031] IPv4 over IPsec tunneling driver
[    1.516634] NET: Registered protocol family 17
[    1.521215] Key type dns_resolver registered
[    1.525852] Registering SWP/SWPB emulation handler
[    1.532363] Loading compiled-in X.509 certificates
[    1.548567] sun8i-v3s-pinctrl 1c20800.pinctrl: 1c20800.pinctrl supply vcc-pg not found, using dummy regulator
[    1.564642] sun4i-drm display-engine: bound 1100000.mixer (ops 0xc075ffa0)
[    1.572728] sun4i-drm display-engine: bound 1c0c000.lcd-controller (ops 0xc075d100)
[    1.580565] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[    1.587212] [drm] No driver support for vblank timestamp query.
[    1.595229] [drm] Initialized sun4i-drm 1.0.0 20150629 for display-engine on minor 0
[    1.637283] mmc0: host does not support reading read-only switch, assuming write-enable
[    1.640126] mmc0: new high speed SDHC card at address aaaa
[    1.643655] Console: switching to colour frame buffer device 60x34
[    1.645503] mmcblk0: mmc0:aaaa SC16G 14.8 GiB 
[    1.653527]  mmcblk0: p1 p2 p3
[    1.688411] sun4i-drm display-engine: fb0: sun4i-drmdrmfb frame buffer device
[    1.697270] usb_phy_generic usb_phy_generic.0.auto: usb_phy_generic.0.auto supply vcc not found, using dummy regulator
[    1.709637] musb-hdrc musb-hdrc.1.auto: MUSB HDRC host driver
[    1.715640] musb-hdrc musb-hdrc.1.auto: new USB bus registered, assigned bus number 3
[    1.725757] hub 3-0:1.0: USB hub found
[    1.729809] hub 3-0:1.0: 1 port detected
[    1.735942] hctosys: unable to open rtc device (rtc0)
[    1.753445] EXT4-fs (mmcblk0p3): INFO: recovery required on readonly filesystem
[    1.761076] EXT4-fs (mmcblk0p3): write access will be enabled during recovery
[    1.787243] random: fast init done
[    1.813537] EXT4-fs (mmcblk0p3): recovery complete
[    1.824336] EXT4-fs (mmcblk0p3): mounted filesystem with ordered data mode. Opts: (null)
[    1.832749] VFS: Mounted root (ext4 filesystem) readonly on device 179:3.
[    1.842929] devtmpfs: mounted
[    1.849107] Freeing unused kernel memory: 1024K
[    1.853889] Run /sbin/init as init process
[    2.075765] EXT4-fs (mmcblk0p3): re-mounted. Opts: (null)
Mounting OverlayFS: Skip
Populating /dev using udev: [    2.446301] udevd[79]: starting version 3.2.9
[    2.478957] random: udevd: uninitialized urandom read (16 bytes read)
[    2.500762] random: udevd: uninitialized urandom read (16 bytes read)
[    2.514915] random: udevd: uninitialized urandom read (16 bytes read)
fbv - The Framebuffer Viewer
/usr/img/hehua.jpg
1024 x 682
[    2.659254] udevd[80]: starting eudev-3.2.9
[    3.774803] rtc-hym8563 0-0051: could not init device, -6
[    3.797909] input: TSC2007 Touchscreen as /devices/platform/soc/1c2ac00.i2c/i2c-0/0-0048/input/input0
done
Initializing random number generator: OK
Saving random seed: [    6.080484] random: dd: uninitialized urandom read (512 bytes read)
OK
Starting network: OK
# 

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#1 2022-06-22 10:23:26

哇酷小二
wechat微信:whycan_cn
所在地: 你猜
注册时间: 2020-04-22
已发帖子: 3,096
积分: 1897
个人网站

Re: 自己弄的V3X板子液晶屏没有输出

示波器量一下 DE/HSYNC/VSYNC/PCLK 这些信号看看,如果没有信号,可能是那一组的IO电源没有接.





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楼主 #2 2022-06-22 15:33:28

zhang235hai
会员
注册时间: 2020-04-06
已发帖子: 198
积分: 151

Re: 自己弄的V3X板子液晶屏没有输出

哇酷小二 说:

示波器量一下 DE/HSYNC/VSYNC/PCLK 这些信号看看,如果没有信号,可能是那一组的IO电源没有接.

更换了一个50Pin的FPC座子,重新下载了一个800*480的固件,目前可以正常显示了
214deb7b53a02e392a14c4c1dc5c5cf.jpg

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#3 2022-06-22 20:31:51

mysteryli
会员
注册时间: 2020-03-05
已发帖子: 367
积分: 297
个人网站

Re: 自己弄的V3X板子液晶屏没有输出

板子画的不错 是用来做产品的嘛

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楼主 #4 2022-06-23 14:23:13

zhang235hai
会员
注册时间: 2020-04-06
已发帖子: 198
积分: 151

Re: 自己弄的V3X板子液晶屏没有输出

mysteryli 说:

板子画的不错 是用来做产品的嘛

是想做一个linux小主机,上面带了VGA接口,用来跑Qt,现在不知道怎么改分辨率,能提示一下吗?

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