WhyCan Forum(哇酷开发者社区)

# dmesg 
[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Linux version 5.4.99 (teddy@teddyUbuntuVM) (gcc version 9.4.0 (Buildroot -g1f0bf4d70-dirty)) #73 Sat Jun 11 19:52:12 CST 2022
[    0.000000] CPU: ARM926EJ-S [41069265] revision 5 (ARMv5TEJ), cr=0005317f
[    0.000000] CPU: VIVT data cache, VIVT instruction cache
[    0.000000] OF: fdt: Machine model: Widora MangoPi R3
[    0.000000] Memory policy: Data cache writeback
[    0.000000] cma: Failed to reserve 16 MiB
[    0.000000] On node 0 totalpages: 7967
[    0.000000]   Normal zone: 63 pages used for memmap
[    0.000000]   Normal zone: 0 pages reserved
[    0.000000]   Normal zone: 7967 pages, LIFO batch:0
[    0.000000] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
[    0.000000] pcpu-alloc: [0] 0 
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 7904
[    0.000000] Kernel command line: console=ttyS0,115200 panic=5 rootwait root=/dev/mmcblk0p2 earlyprintk rw net.ifnames=0 vt.global_cursor_default=0
[    0.000000] Dentry cache hash table entries: 4096 (order: 2, 16384 bytes, linear)
[    0.000000] Inode-cache hash table entries: 2048 (order: 1, 8192 bytes, linear)
[    0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off
[    0.000000] Memory: 17624K/31868K available (7168K kernel code, 291K rwdata, 1816K rodata, 4096K init, 227K bss, 14244K reserved, 0K cma-reserved)
[    0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[    0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16
[    0.000000] random: get_random_bytes called from start_kernel+0x258/0x45c with crng_init=0
[    0.000046] sched_clock: 32 bits at 24MHz, resolution 41ns, wraps every 89478484971ns
[    0.000120] clocksource: timer: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 79635851949 ns
[    0.000639] Console: colour dummy device 80x30
[    0.000726] Calibrating delay loop... 346.52 BogoMIPS (lpj=1732608)
[    0.060152] pid_max: default: 32768 minimum: 301
[    0.060562] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
[    0.060596] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
[    0.062145] CPU: Testing write buffer coherency: ok
[    0.064026] Setting up static identity map for 0x80100000 - 0x80100058
[    0.065213] devtmpfs: initialized
[    0.072884] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[    0.072937] futex hash table entries: 256 (order: -1, 3072 bytes, linear)
[    0.073185] pinctrl core: initialized pinctrl subsystem
[    0.075306] NET: Registered protocol family 16
[    0.076719] DMA: preallocated 256 KiB pool for atomic coherent allocations
[    0.078379] cpuidle: using governor menu
[    0.114413] SCSI subsystem initialized
[    0.114832] usbcore: registered new interface driver usbfs
[    0.114968] usbcore: registered new interface driver hub
[    0.115103] usbcore: registered new device driver usb
[    0.115501] mc: Linux media interface: v0.10
[    0.115619] videodev: Linux video capture interface: v2.00
[    0.115706] pps_core: LinuxPPS API ver. 1 registered
[    0.115717] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[    0.115784] PTP clock support registered
[    0.116686] ion_parse_dt_heap_common: id 4 type 4 name cma align 1000
[    0.117485] Advanced Linux Sound Architecture Driver Initialized.
[    0.119814] clocksource: Switched to clocksource timer
[    0.121340] simple-framebuffer 81f1f000.framebuffer: framebuffer at 0x81f1f000, 0xe1000 bytes, mapped to 0x(ptrval)
[    0.121382] simple-framebuffer 81f1f000.framebuffer: format=x8r8g8b8, mode=480x480x32, linelength=1920
[    0.131258] Console: switching to colour frame buffer device 60x30
[    0.147327] simple-framebuffer 81f1f000.framebuffer: fb0: simplefb registered!
[    0.172158] thermal_sys: Registered thermal governor 'step_wise'
[    0.172758] NET: Registered protocol family 2
[    0.173998] tcp_listen_portaddr_hash hash table entries: 512 (order: 0, 4096 bytes, linear)
[    0.174065] TCP established hash table entries: 1024 (order: 0, 4096 bytes, linear)
[    0.174100] TCP bind hash table entries: 1024 (order: 0, 4096 bytes, linear)
[    0.174133] TCP: Hash tables configured (established 1024 bind 1024)
[    0.174367] UDP hash table entries: 256 (order: 0, 4096 bytes, linear)
[    0.174410] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes, linear)
[    0.174836] NET: Registered protocol family 1
[    0.176761] NetWinder Floating Point Emulator V0.97 (double precision)
[    0.178272] Initialise system trusted keyrings
[    0.178865] workingset: timestamp_bits=30 max_order=13 bucket_order=0
[    0.194524] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[    0.194997] jffs2: version 2.2. (NAND) (SUMMARY)  © 2001-2006 Red Hat, Inc.
[    0.294438] Key type asymmetric registered
[    0.294474] Asymmetric key parser 'x509' registered
[    0.294633] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 249)
[    0.294658] io scheduler mq-deadline registered
[    0.294671] io scheduler kyber registered
[    0.304686] suniv-f1c100s-pinctrl 1c20800.pinctrl: initialized sunXi PIO driver
[    0.322767] Serial: 8250/16550 driver, 8 ports, IRQ sharing disabled
[    0.327557] suniv-f1c100s-pinctrl 1c20800.pinctrl: 1c20800.pinctrl supply vcc-pe not found, using dummy regulator
[    0.328724] printk: console [ttyS0] disabled
[    0.349009] 1c25000.serial: ttyS0 at MMIO 0x1c25000 (irq = 26, base_baud = 6250000) is a 16550A
[    0.967280] printk: console [ttyS0] enabled
[    1.009059] 1c25800.serial: ttyS1 at MMIO 0x1c25800 (irq = 27, base_baud = 6250000) is a 16550A
[    1.024814] SCSI Media Changer driver v0.25 
[    1.030595] suniv-f1c100s-pinctrl 1c20800.pinctrl: 1c20800.pinctrl supply vcc-pc not found, using dummy regulator
[    1.063103] random: fast init done
[    1.450105] spi-nand: probe of spi0.0 failed with error -110
[    1.456134] MACsec IEEE 802.1AE
[    1.459681] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    1.466343] ehci-platform: EHCI generic platform driver
[    1.471916] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[    1.478131] ohci-platform: OHCI generic platform driver
[    1.483784] usbcore: registered new interface driver usb-storage
[    1.552836] sunxi-wdt 1c20ca0.watchdog: Watchdog enabled (timeout=16 sec, nowayout=0)
[    1.566631] suniv-f1c100s-pinctrl 1c20800.pinctrl: 1c20800.pinctrl supply vcc-pf not found, using dummy regulator
[    1.608186] sunxi-mmc 1c0f000.mmc: initialized, max. request size: 16384 KB
[    1.617099] usbcore: registered new interface driver usbhid
[    1.622787] usbhid: USB HID core driver
[    1.626895] sunxi-cedar 1c0e000.video-codec: sunxi cedar version 0.01alpha
[    1.634169] sunxi-cedar 1c0e000.video-codec: cedar-ve the get irq is 19
[    1.661236] debugfs: Directory '1c23c00.codec' with parent 'F1C100s Audio Codec' already present!
[    1.674594] sun4i-codec 1c23c00.codec: Codec <-> 1c23c00.codec mapping ok
[    1.688579] NET: Registered protocol family 17
[    1.693248] Key type dns_resolver registered
[    1.698501] Loading compiled-in X.509 certificates
[    1.703911] show welcome
[    1.744465] cfg80211: Loading compiled-in X.509 certificates for regulatory database
[    1.759405] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
[    1.766219] ALSA device list:
[    1.769203]   #0: F1C100s Audio Codec
[    1.773426] platform regulatory.0: Direct firmware load for regulatory.db failed with error -2
[    1.782161] cfg80211: failed to load regulatory.db
[    1.787894] Waiting for root device /dev/mmcblk0p2...
[    1.809141] mmc0: host does not support reading read-only switch, assuming write-enable
[    1.821488] mmc0: new high speed SD card at address 1388
[    1.828820] mmcblk0: mmc0:1388 CS011 119 MiB 
[    1.837664]  mmcblk0: p1 p2
[    1.888201] EXT4-fs (mmcblk0p2): recovery complete
[    1.894781] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)
[    1.903089] VFS: Mounted root (ext4 filesystem) on device 179:2.
[    1.910515] devtmpfs: mounted
[    1.932836] Freeing unused kernel memory: 4096K
[    1.937532] Run /sbin/init as init process
[    2.053426] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
[    2.521437] random: dd: uninitialized urandom read (512 bytes read)
[    2.606979] random: dbus-uuidgen: uninitialized urandom read (12 bytes read)
[    2.614502] random: dbus-uuidgen: uninitialized urandom read (8 bytes read)
[    4.181193] random: crng init done
[    4.184623] random: 1 urandom warning(s) missed due to ratelimiting
[   35.049909] vcc3v0: disabling
[   35.052955] vcc5v0: disabling
[   52.668340] 8188fu: loading out-of-tree module taints kernel.
[   52.733961] RTW: module init start
[   52.737394] RTW: rtl8188fu v5.11.5-13-g2482755ff.20210615
[   52.742938] RTW: build time: Jun 11 2022 20:04:38
[   52.747747] RTW: rtw_inetaddr_notifier_register
[   52.752551] usbcore: registered new interface driver rtl8188fu
[   52.758376] RTW: module init ret=0

&usb_otg {
	dr_mode = "host";
	status = "okay";
};

localtion
	 -*-   Wireless  --->
		<*>   cfg80211 - wireless configuration API
		[*]   support CRDA     
		[*]   cfg80211 wireless extensions compatibility 
		<*>   Generic IEEE 802.11 Networking Stack (mac80211)
        [*]   Minstrel
	[*] Networking support  ---> 
		 <*>   RF switch subsystem support  ---> 
	->Device Drivers
		[*]   Network device support  ---> 
			[*]   Network core driver support
			<*>   IEEE 802.1AE MAC-level encryption (MACsec)
  			 [*]  Wireless LAN  ---> 
				[*]   mac80211-based legacy WDS support
				[*]   Ralink devices 
				<*>   Ralink driver support  --->
					[*]   Realtek devices
					<M>   Realtek 8188E USB WiFi
					
		[*] USB support  --->
			<*>   Support for Host-side USB	 
			*** USB Host Controller Drivers *** 
			<*>   EHCI HCD (USB 2.0) support
			<*>   Generic EHCI driver for a platform device 
			<*>   OHCI HCD (USB 1.1) support
			<*>   Generic OHCI driver for a platform device
			       MUSB Mode Selection (Host only mode)  ---> #别错过这里，否则USB模式可能会出错
			<*>   Inventra Highspeed Dual Role Controller
			<*>   ChipIdea Highspeed Dual Role Controller
			[*]   ChipIdea host controller