Hello,TIer.
We have been always use a fixed 1.0V DC/DC for DM8168's AVS supply.Nowadays,we start to enable AVS for DM8168's AVS.We use AVS based on GPIO.
However,when we enable AVS from the kernel according to the TI wiki page,some strange problem happens:
1.
Uboot:DVRRDK 4.0 EVM version
Kernel:DVRRDK 3.0,Enable AVS;
Phenomenon:The boot will be halted after print "OMAP Watchdog Timer Rev 0x00: initial timeout 60 sec"
Sometimes
2
Uboot:DVRRDK 4.0 DVR version
Kernel:DVRRDK 3.0,Enable AVS
Phenomenon:The boot will be halted when DM8168 trying to connect SATA,and then reboot.
3.
Uboot:DVRRDK 4.0 EVM version
Kernel:DVRRDK 3.0 Disable AVS:
Phenomenon:When uncompress kernel,it prints "uncompression error"
4. I change another board,and modify AVS DC/DC's output capacitor to 660uF.
However,sometimes,it can boot up normally.
I notice that during the Uboot boot,the AVS2 pin output a sequence of pulse,it seems that it is not a AVS control pin,it is still a GPMC_DIR pin.and AVS0 also toggole 2 or 3times.
Is it a hardware problem?
AVS IO mapping:
AVS0----GP1[0]---Q42
AVS1----GP1[29]---Q45
AVS2----GP1[20]---Q43
AVS3----GP0[1]---Q46
AVS4----GP0[4]---Q443542.EastsoftSCH _ SHEET75 - Power_D.pdf
NAND read: device 0 offset 0x580000, size 0x300000
3145728 bytes read: OK
## Booting kernel from Legacy Image at 81000000 ...
Image Name: Linux-2.6.37
Created: 2014-04-16 6:19:27 UTC
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 2839264 Bytes = 2.7 MiB
Load Address: 80008000
Entry Point: 80008000
Verifying Checksum ... OK
Loading Kernel Image ... OK
OK
Starting kernel ...
Uncompressing Linux... done, booting the kernel.
Linux version 2.6.37 (root@ubuntu) (gcc version 4.3.3 (Sourcery G++ Lite 2009q1-203) ) #48 Tue Apr 15 20:51:49 CST 2014
CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c53c7f
CPU: VIPT nonaliasing data cache, VIPT aliasing instruction cache
Machine: ti8168es
reserved size = 52428800 at 0x0
FB: Reserving 52428800 bytes SDRAM for VRAM
Memory policy: ECC disabled, Data cache writeback
OMAP chip is TI8168 2.0
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 52224
Kernel command line: mem=256M console=ttyO2,115200n8
PID hash table entries: 1024 (order: 0, 4096 bytes)
Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)
Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)
Memory: 206MB = 206MB total
Memory: 202648k/202648k available, 59496k reserved, 0K highmem
Virtual kernel memory layout:
vector : 0xffff0000 - 0xffff1000 ( 4 kB)
fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
DMA : 0xffc00000 - 0xffe00000 ( 2 MB)
vmalloc : 0xd0800000 - 0xf8000000 ( 632 MB)
lowmem : 0xc0000000 - 0xd0000000 ( 256 MB)
pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB)
modules : 0xbf000000 - 0xbfe00000 ( 14 MB)
.init : 0xc0008000 - 0xc003d000 ( 212 kB)
.text : 0xc003d000 - 0xc0558000 (5228 kB)
.data : 0xc0558000 - 0xc05a2900 ( 299 kB)
SLUB: Genslabs=11, HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
NR_IRQS:407
IRQ: Found an INTC at 0xfa200000 (revision 5.0) with 128 interrupts
Total of 128 interrupts on 1 active controller
GPMC revision 6.0
Trying to install interrupt handler for IRQ400
Trying to install interrupt handler for IRQ401
Trying to install interrupt handler for IRQ402
Trying to install interrupt handler for IRQ403
Trying to install interrupt handler for IRQ404
Trying to install interrupt handler for IRQ405
Trying to install interrupt handler for IRQ406
Trying to install type control for IRQ407
Trying to set irq flags for IRQ407
OMAP clockevent source: GPTIMER1 at 27000000 Hz
Console: colour dummy device 80x30
Calibrating delay loop... 1199.30 BogoMIPS (lpj=5996544)
pid_max: default: 32768 minimum: 301
Security Framework initialized
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
devtmpfs: initialized
omap_voltage_early_init: voltage driver support not added
regulator: core version 0.5
regulator: dummy:
NET: Registered protocol family 16
omap_voltage_domain_lookup: Voltage driver init not yet happened.Faulting!
omap_voltage_add_dev: VDD specified does not exist!
OMAP GPIO hardware version 0.1
OMAP GPIO hardware version 0.1
omap_mux_init: Add partition: #1: core, flags: 0
_omap_mux_get_by_name: Could not find signal i2c2_scl.i2c2_scl
_omap_mux_get_by_name: Could not find signal i2c2_sda.i2c2_sda
registered ti816x_gpio_vr device
registered ti816x_sr device
pm_dbg_init: only OMAP3 supported
registered ti81xx_vpss device
registered ti81xx_vidout device
registered ti81xx on-chip HDMI device
registered ti81xx_fb device
ti81xx_pcie: Invoking PCI BIOS...
ti81xx_pcie: Setting up Host Controller...
ti81xx_pcie: Register base mapped @0xd0820000
ti81xx_pcie: Starting PCI scan...
PCI: bus0: Fast back to back transfers disabled
PCI: bus1: Fast back to back transfers disabled
pci 0000:00:00.0: BAR 8: assigned [mem 0x20000000-0x200fffff]
pci 0000:01:00.0: BAR 0: assigned [mem 0x20000000-0x20007fff]
pci 0000:01:00.0: BAR 0: set to [mem 0x20000000-0x20007fff] (PCI address [0x20000000-0x20007fff])
pci 0000:01:00.0: BAR 1: assigned [mem 0x20008000-0x2000bfff]
pci 0000:01:00.0: BAR 1: set to [mem 0x20008000-0x2000bfff] (PCI address [0x20008000-0x2000bfff])
pci 0000:00:00.0: PCI bridge to [bus 01-01]
pci 0000:00:00.0: bridge window [io disabled]
pci 0000:00:00.0: bridge window [mem 0x20000000-0x200fffff]
pci 0000:00:00.0: bridge window [mem pref disabled]
PCI: enabling device 0000:00:00.0 (0140 -> 0143)
bio: create slab <bio-0> at 0
regulator: VFB: 800 <--> 1025 mV at 905 mV
vgaarb: loaded
xr20m1172 Initcall...
SCSI subsystem initialized
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
USBSS revision 4ea20809
registerd cppi-dma Intr @ IRQ 17
Cppi41 Init Done
omap_i2c omap_i2c.1: bus 1 rev4.0 at 100 kHz
xr20m1172: Probe Called...
xr20m1172 1-0030: chip found, driver version 0.0.1
XR20M1172_CORE_TEST register reading...00
omap_i2c omap_i2c.2: bus 2 rev4.0 at 100 kHz
Advanced Linux Sound Architecture Driver Version 1.0.23.
Switching to clocksource gp timer
musb-hdrc: version 6.0, host, debug=0
musb-hdrc musb-hdrc.0: dma type: dma-cppi41
MUSB controller-0 revision 4ea20800
musb-hdrc musb-hdrc.0: MUSB HDRC host driver
musb-hdrc musb-hdrc.0: new USB bus registered, assigned bus number 1
usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
usb usb1: Product: MUSB HDRC host driver
usb usb1: Manufacturer: Linux 2.6.37 musb-hcd
usb usb1: SerialNumber: musb-hdrc.0
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 1 port detected
musb-hdrc musb-hdrc.0: USB Host mode controller at d081e000 using DMA, IRQ 18
musb-hdrc musb-hdrc.1: dma type: dma-cppi41
MUSB controller-1 revision 4ea20800
musb-hdrc musb-hdrc.1: MUSB HDRC host driver
musb-hdrc musb-hdrc.1: new USB bus registered, assigned bus number 2
usb usb2: New USB device found, idVendor=1d6b, idProduct=0002
usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
usb usb2: Product: MUSB HDRC host driver
usb usb2: Manufacturer: Linux 2.6.37 musb-hcd
usb usb2: SerialNumber: musb-hdrc.1
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 1 port detected
musb-hdrc musb-hdrc.1: USB Host mode controller at d0826800 using DMA, IRQ 19
NET: Registered protocol family 2
IP route cache hash table entries: 2048 (order: 1, 8192 bytes)
TCP established hash table entries: 8192 (order: 4, 65536 bytes)
TCP bind hash table entries: 8192 (order: 3, 32768 bytes)
TCP: Hash tables configured (established 8192 bind 8192)
TCP reno registered
UDP hash table entries: 256 (order: 0, 4096 bytes)
UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
NET: Registered protocol family 1
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
RPC: Registered tcp NFSv4.1 backchannel transport module.
NetWinder Floating Point Emulator V0.97 (double precision)
PMU: registered new PMU device of type 0
omap-iommu omap-iommu.0: ducati registered
omap-iommu omap-iommu.1: sys registered
JFFS2 version 2.2. (NAND) © 2001-2006 Red Hat, Inc.
msgmni has been set to 395
io scheduler noop registered
io scheduler deadline registered
io scheduler cfq registered (default)
Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
omap_uart.0: ttyO0 at MMIO 0x48020000 (irq = 72) is a OMAP UART0
omap_uart.1: ttyO1 at MMIO 0x48022000 (irq = 73) is a OMAP UART1
omap_uart.2: ttyO2 at MMIO 0x48024000 (irq = 74) is a OMAP UART2
console [ttyO2] enabled
brd: module loaded
loop: module loaded
ahci probe: devid name is ahci
ahci CAP register dump =0x6726ff81
Modified ahci CAP register dump =0x6f26ff81
ahci ahci.0: forcing PORTS_IMPL to 0x3
ahci: SSS flag set, parallel bus scan disabled
ahci ahci.0: AHCI 0001.0100 32 slots 2 ports 3 Gbps 0x3 impl platform mode
ahci ahci.0: flags: ncq sntf stag pm led clo only pmp pio slum part ccc
scsi0 : ahci_platform
scsi1 : ahci_platform
ata1: SATA max UDMA/133 mmio [mem 0x4a140000-0x4a150fff] port 0x100 irq 16
ata2: SATA max UDMA/133 irq_stat 0x00000040, connection status changed irq 16
omap2-nand driver initializing
ONFI flash detected
ONFI param page 0 valid
NAND device: Maf ID: 0x01, Chip ID: 0xdc (AMD, NAND 512MiB 3,3V 8-bit)
erasesize: 0x20000, writesize: 2048, oobsize: 64
Creating 6 MTD partitions on "omap2-nand.0":
0x000000000000-0x000000260000 : "U-Boot"
0x000000260000-0x000000280000 : "U-Boot Env"
0x000000280000-0x000000580000 : "U-Boot Logo"
0x000000580000-0x0000009c0000 : "Kernel"
0x0000009c0000-0x00001d1c0000 : "File System"
0x00001d1c0000-0x000020000000 : "Reserved"
davinci_mdio davinci_mdio.0: davinci mdio revision 1.6
davinci_mdio davinci_mdio.0: detected phy mask fffffff9
davinci_mdio.0: probed
davinci_mdio davinci_mdio.0: phy[1]: device 0:01, driver ET1011C
davinci_mdio davinci_mdio.0: phy[2]: device 0:02, driver ET1011C
usbcore: registered new interface driver cdc_ether
usbcore: registered new interface driver dm9601
ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
usbcore: registered new interface driver cdc_wdm
Initializing USB Mass Storage driver...
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
mice: PS/2 mouse device common for all mice
omap_rtc omap_rtc: rtc core: registered omap_rtc as rtc0
rtc-pcf8563 1-0051: chip found, driver version 0.4.3
rtc-pcf8563 1-0051: rtc core: registered rtc-pcf8563 as rtc1
i2c /dev entries driver
Linux video capture interface: v2.00
usbcore: registered new interface driver uvcvideo
USB Video Class driver (v1.0.0)
OMAP Watchdog Timer Rev 0x00: initial timeout 60 sec
Internal error: Oops - undefined instruction: 0 [#1]
last sysfs file:
Modules linked in:
CPU: 0 Not tainted (2.6.37 #48)
PC is at 0xc057cb20
LR is at __setup_irq+0x254/0x300
pc : [<c057cb20>] lr : [<c009d604>] psr: a0000013
sp : c009e1d0 ip : cc82bdf0 fp : c009e134
r10: c0575598 r9 : cca4da00 r8 : 60000013
r7 : 0000000e r6 : 00000040 r5 : cc82bdc8 r4 : cc82bddc
r3 : cc820b9f r2 : 05755740 r1 : c0575574 r0 : 00000000
Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user
Control: 10c5387d Table: 80004019 DAC: 00000017
Process fà„!Ÿå (pid: -509603837, stack limit = 0xc009e2e8)
NAND read: device 0 offset 0x580000, size 0x300000 3145728 bytes read: OK ## Booting kernel from Legacy Image at 81000000 ... Image Name: Linux-2.6.37 Created: 2014-04-03 2:03:08 UTC Image Type: ARM Linux Kernel Image (uncompressed) Data Size: 2836500 Bytes = 2.7 MiB Load Address: 80008000 Entry Point: 80008000 Verifying Checksum ... OK Loading Kernel Image ... OK OK Starting kernel ... Uncompressing Linux... uncompression error -- System halted
