RTC 关机后不走

以前用的老的 am3358 芯片，断电后 rtc 不走，ti 说 芯片有 bug，现在换成了 am3358bzcz还是这问题，电话咨询你们技术支持，说是可以的，为什么我这个不行，电池也换了。

你烧你板子 相对应的镜像，与你板子不对应的镜像会有这个问题，还不行请把串口信息贴上来

镜像是对的，新的核心板，新的底板，rtc 也可读可写，但就是每次开机变为 2012-09-12 17:55:16 UTC

烧写的镜像是 uImage_linux_for_V2_V2.0.bin

Q：

I have two questions regarding the RTC battery:

1. I have Am3358evm Rev 1.1A, I found the backup battery isn't charged ,currently it is down to 2.0V, how to enable the charge function via software of uboot and linux?

2. I have customized a board using Am3352BZCZ80 and as rtc-only mode referring to the Am3358evm. I want the backup batter to power the RTC only   when the main power is off, I don't need sleep and wakeup features,so I don't connect the EXT_WAKEUP pin to any source except for having a 10k pull-up resistor, can you advice if  it will work as my expected?


A：

1. You have to program the BBCH_REG in the TPS65910A. You can read/write this register through I2C0. Please refer to the TPS65910A datasheet for details.

2. You can refer to the Starter Kit schematic. EXT_WAKEUP is tied to GND there and PMIC_PWR_EN is not connected. This way VRTC will be provided as long as the backup battery holds. Power on will be achieved by either applying main power to the board (PWRHOLD signal pulled up to VBAT, max. allowed voltage on this pin is 5.5V)  or by starting the PMIC with a pushbutton (PWRHOLD signal pulled up to VAUX33 as on Starter Kit).

zhxianbin 发表于 2014-1-15 16:13
Q：

I have two questions regarding the RTC battery:

你的地板是V2的吗，我们现在的是可以的

wbz073 发表于 2014-1-15 16:27
你的地板是V2的吗，我们现在的是可以的

串口信息发一份（完整的）

wbz073 发表于 2014-1-15 16:27
你的地板是V2的吗，我们现在的是可以的

串口信息发一份（完整的）

Starting kernel ...

Uncompressing Linux... done, booting the kernel.
Linux version 3.2.0-EmbedSky (root@embedsk-server) (gcc version 4.4.6 (for TQ210 EmbedSky Tech) ) #1 Mon Aug 26 18:52:14 CST 2013
CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c53c7d
CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
Machine: tq3358
Memory policy: ECC disabled, Data cache writeback
AM335X ES1.0 (sgx neon )
Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 130048
Kernel command line: console=ttyO0,115200n8 androidboot.console=ttySAC0 root=/dev/mtdblock8 rootfstype=yaffs2 rw rootwait=1 init=/init ip=off lcd=X800Y480 uart1_d_can=d_can uart2_i2c2=i2c2
user X800Y480 lcd.
uart1_d_can, user select d_can.
uart2_i2c2, user select i2c2.
PID hash table entries: 2048 (order: 1, 8192 bytes)
Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
Memory: 512MB = 512MB total
Memory: 509540k/509540k available, 14748k reserved, 0K highmem
Virtual kernel memory layout:
    vector  : 0xffff0000 - 0xffff1000   (   4 kB)
    fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)
    vmalloc : 0xe0800000 - 0xff000000   ( 488 MB)
    lowmem  : 0xc0000000 - 0xe0000000   ( 512 MB)
    modules : 0xbf000000 - 0xc0000000   (  16 MB)
      .text : 0xc0008000 - 0xc0814000   (8240 kB)
      .init : 0xc0814000 - 0xc0852000   ( 248 kB)
      .data : 0xc0852000 - 0xc08b4260   ( 393 kB)
       .bss : 0xc08b4284 - 0xc09f8708   (1298 kB)
NR_IRQS:396
IRQ: Found an INTC at 0xfa200000 (revision 5.0) with 128 interrupts
Total of 128 interrupts on 1 active controller
OMAP clockevent source: GPTIMER2 at 24000000 Hz
omap_dm_timer_switch_src: Switching to HW default clocksource(sys_clkin_ck) for timer1, this may impact timekeeping in low power state
OMAP clocksource: GPTIMER1 at 24000000 Hz
sched_clock: 32 bits at 24MHz, resolution 41ns, wraps every 178956ms
Console: colour dummy device 80x30
Calibrating delay loop... 718.02 BogoMIPS (lpj=3590144)
pid_max: default: 32768 minimum: 301
Security Framework initialized
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
omap_hwmod: gfx: failed to hardreset
omap_hwmod: pruss: failed to hardreset
print_constraints: dummy:
NET: Registered protocol family 16
OMAP GPIO hardware version 0.1
omap_mux_init: Add partition: #1: core, flags: 0
da8xx_lcdc.0: alias fck already exists
TSC connected to beta GP EVM
omap_i2c.1: alias fck already exists
omap_i2c.2: alias fck already exists
davinci-mcasp.1: alias fck already exists
omap_hsmmc.0: alias fck already exists
d_can.0: alias fck already exists
d_can.1: alias fck already exists
omap_i2c.3: alias fck already exists
omap2_mcspi.1: alias fck already exists
omap2_mcspi.2: alias fck already exists
edma.0: alias fck already exists
edma.0: alias fck already exists
edma.0: alias fck already exists
bio: create slab <bio-0> at 0
SCSI subsystem initialized
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
musb-ti81xx musb-ti81xx: musb0, board_mode=0x13, plat_mode=0x3
musb-ti81xx musb-ti81xx: musb1, board_mode=0x13, plat_mode=0x1
omap_i2c omap_i2c.1: bus 1 rev2.4.0 at 100 kHz
tps65910 1-002d: JTAGREVNUM 0x1
print_constraints: VRTC:
print_constraints: VIO: at 1500 mV
print_constraints: VDD1: 600 <--> 1500 mV at 1262 mV normal
print_constraints: VDD2: 600 <--> 1500 mV at 1137 mV normal
print_constraints: VDD3: 5000 mV
print_constraints: VDIG1: at 1800 mV
print_constraints: VDIG2: at 1800 mV
print_constraints: VPLL: at 1800 mV
print_constraints: VDAC: at 1800 mV
print_constraints: VAUX1: at 1800 mV
print_constraints: VAUX2: at 3300 mV
print_constraints: VAUX33: at 3300 mV
print_constraints: VMMC: at 3300 mV
tps65910 1-002d: No interrupt support, no core IRQ
warn Power up reset detected.
omap_i2c omap_i2c.2: bus 2 rev2.4.0 at 100 kHz
omap_i2c omap_i2c.3: bus 3 rev2.4.0 at 100 kHz
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
Switching to clocksource gp timer
musb-hdrc: version 6.0, ?dma?, otg (peripheral+host)
musb-hdrc musb-hdrc.0: dma type: pio
musb-hdrc musb-hdrc.0: USB OTG mode controller at e081c000 using PIO, IRQ 18
musb-hdrc musb-hdrc.1: dma type: pio
musb-hdrc musb-hdrc.1: MUSB HDRC host driver
musb-hdrc musb-hdrc.1: 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 3.2.0-EmbedSky musb-hcd
usb usb1: SerialNumber: musb-hdrc.1
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 1 port detected
musb-hdrc musb-hdrc.1: USB Host mode controller at e081e800 using PIO, IRQ 19
NET: Registered protocol family 2
IP route cache hash table entries: 4096 (order: 2, 16384 bytes)
TCP established hash table entries: 16384 (order: 5, 131072 bytes)
TCP bind hash table entries: 16384 (order: 4, 65536 bytes)
TCP: Hash tables configured (established 16384 bind 16384)
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 named UNIX socket transport module.
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)
omap-gpmc omap-gpmc: GPMC revision 6.0
Registering NAND on CS0
ashmem: initialized
VFS: Disk quotas dquot_6.5.2
Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
yaffs: yaffs built Aug 26 2013 18:51:43 Installing.
msgmni has been set to 995
io scheduler noop registered
io scheduler deadline registered
io scheduler cfq registered (default)
da8xx_lcdc da8xx_lcdc.0: GLCD: Found A70_TN92 panel
Console: switching to colour frame buffer device 100x30
omap_uart.0: ttySAC0 at MMIO 0x44e09000 (irq = 72) is a OMAP UART0
console [ttyO0] enabled
omap_uart.1: ttySAC1 at MMIO 0x48022000 (irq = 73) is a OMAP UART1
omap_uart.2: ttySAC2 at MMIO 0x48024000 (irq = 74) is a OMAP UART2
omap_uart.3: ttySAC3 at MMIO 0x481a6000 (irq = 44) is a OMAP UART3
omap_uart.4: ttySAC4 at MMIO 0x481a8000 (irq = 45) is a OMAP UART4
omap_uart.5: ttySAC5 at MMIO 0x481aa000 (irq = 46) is a OMAP UART5
Register led successfully!
Register beep successfully!
brd: module loaded
loop: module loaded
i2c-core: driver [tsl2550] using legacy suspend method
i2c-core: driver [tsl2550] using legacy resume method
mtdoops: mtd device (mtddev=name/number) must be supplied
omap2-nand driver initializing
NAND device: Manufacturer ID: 0xec, Chip ID: 0xd3 (Samsung NAND 1GiB 3,3V 8-bit)
Creating 9 MTD partitions on "omap2-nand.0":
0x000000000000-0x000000020000 : "SPL"
0x000000020000-0x000000040000 : "SPL.backup1"
0x000000040000-0x000000060000 : "SPL.backup2"
0x000000060000-0x000000080000 : "SPL.backup3"
0x000000080000-0x000000260000 : "U-Boot"
0x000000260000-0x000000280000 : "U-Boot Env"
0x000000280000-0x000000580000 : "LOGO"
0x000000580000-0x000000a80000 : "Kernel"
0x000000a80000-0x000040000000 : "File System"
CAN device driver interface
CAN bus driver for Bosch D_CAN controller 1.0
d_can d_can.0: device registered (irq=52, irq_obj=53)
d_can d_can.1: device registered (irq=55, irq_obj=56)
davinci_mdio davinci_mdio.0: davinci mdio revision 1.6
davinci_mdio davinci_mdio.0: detected phy mask ffffffde
davinci_mdio.0: probed
davinci_mdio davinci_mdio.0: phy[0]: device 0:00, driver unknown
davinci_mdio davinci_mdio.0: phy[5]: device 0:05, driver unknown
PPP generic driver version 2.4.2
PPP BSD Compression module registered
PPP Deflate Compression module registered
PPP MPPE Compression module registered
NET: Registered protocol family 24
usbcore: registered new interface driver zd1201
usbcore: registered new interface driver cdc_ether
usbcore: registered new interface driver cdc_eem
usbcore: registered new interface driver dm9601
usbcore: registered new interface driver cdc_subset
cdc_ncm: 04-Aug-2011
usbcore: registered new interface driver cdc_ncm
ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
usbcore: registered new interface driver cdc_acm
cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters
Initializing USB Mass Storage driver...
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
usbcore: registered new interface driver usbserial
USB Serial support registered for generic
usb 1-1: new high-speed USB device number 2 using musb-hdrc
usb 1-1: New USB device found, idVendor=1a40, idProduct=0101
usb 1-1: New USB device strings: Mfr=0, Product=1, SerialNumber=0
usb 1-1: Product: USB 2.0 Hub
hub 1-1:1.0: USB hub found
hub 1-1:1.0: 4 ports detected
usbcore: registered new interface driver usbserial_generic
usbserial: USB Serial Driver core
USB Serial support registered for GSM modem (1-port)
usbcore: registered new interface driver option
option: v0.7.2:USB Driver for GSM modems
USB Serial support registered for pl2303
usbcore: registered new interface driver pl2303
pl2303: Prolific PL2303 USB to serial adaptor driver
gadget: Mass Storage Function, version: 2009/09/11
gadget: Number of LUNs=1

lun0: LUN: removable file: (no medium)
gadget: android_usb ready
musb-hdrc musb-hdrc.0: MUSB HDRC host driver
musb-hdrc musb-hdrc.0: 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 3.2.0-EmbedSky musb-hcd
usb usb2: SerialNumber: musb-hdrc.0
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 1 port detected
mousedev: PS/2 mouse device common for all mice
input: gpio-keys as /devices/platform/gpio-keys/input/input0
input: Resistance_ts as /devices/platform/omap/tsc/input/input1
using rtc device, omap_rtc, for alarms
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: low voltage detected, date/time is not reliable.
rtc-pcf8563 1-0051: rtc core: registered rtc-pcf8563 as rtc1
i2c /dev entries driver
Linux video capture interface: v2.00
i2c-core: driver [tuner] using legacy suspend method
i2c-core: driver [tuner] using legacy resume method
i2c-core: driver [msp3400] using legacy suspend method
i2c-core: driver [msp3400] using legacy resume method
usbcore: registered new interface driver em28xx
em28xx driver loaded
Em28xx: Initialized (Em28xx Audio Extension) extension
usbcore: registered new interface driver usbvision
USBVision USB Video Device Driver for Linux : 0.9.11
usbcore: registered new interface driver pvrusb2
pvrusb2: V4L in-tree version:Hauppauge WinTV-PVR-USB2 MPEG2 Encoder/Tuner
pvrusb2: Debug mask is 31 (0x1f)
usbcore: registered new interface driver zr364xx
zr364xx: Zoran 364xx
usbcore: registered new interface driver stkwebcam
sn9c102: V4L2 driver for SN9C1xx PC Camera Controllers v1:1.48
usbcore: registered new interface driver sn9c102
et61x251: V4L2 driver for ET61X[12]51 PC Camera Controllers v1.1.10
usbcore: registered new interface driver et61x251
pwc: Philips webcam module version 10.0.15 loaded.
pwc: Supports Philips PCA645/646, PCVC675/680/690, PCVC720[40]/730/740/750 & PCVC830/840.
pwc: Also supports the Askey VC010, various Logitech Quickcams, Samsung MPC-C10 and MPC-C30,
pwc: the Creative WebCam 5 & Pro Ex, SOTEC Afina Eye and Visionite VCS-UC300 and VCS-UM100.
usbcore: registered new interface driver Philips webcam
gspca_main: v2.14.0 registered
usbcore: registered new interface driver benq
usbcore: registered new interface driver conex
usbcore: registered new interface driver cpia1
usbcore: registered new interface driver etoms
usbcore: registered new interface driver finepix
usbcore: registered new interface driver jeilinj
usbcore: registered new interface driver kinect
usbcore: registered new interface driver konica
usbcore: registered new interface driver mars
usbcore: registered new interface driver mr97310a
usbcore: registered new interface driver nw80x
usbcore: registered new interface driver ov519
usbcore: registered new interface driver ov534
usbcore: registered new interface driver ov534_9
usbcore: registered new interface driver pac207
usbcore: registered new interface driver pac7302
usbcore: registered new interface driver pac7311
usbcore: registered new interface driver se401
usbcore: registered new interface driver sn9c2028
usbcore: registered new interface driver sn9c20x
usbcore: registered new interface driver sonixb
usbcore: registered new interface driver sonixj
usbcore: registered new interface driver spca500
usbcore: registered new interface driver spca501
usbcore: registered new interface driver spca505
usbcore: registered new interface driver spca506
usbcore: registered new interface driver spca508
usbcore: registered new interface driver spca561
usbcore: registered new interface driver spca1528
usbcore: registered new interface driver sq905
usbcore: registered new interface driver sq905c
usbcore: registered new interface driver sq930x
usbcore: registered new interface driver sunplus
usbcore: registered new interface driver stk014
usbcore: registered new interface driver stv0680
usbcore: registered new interface driver t613
usbcore: registered new interface driver gspca_topro
usbcore: registered new interface driver tv8532
usbcore: registered new interface driver vc032x
usbcore: registered new interface driver vicam
usbcore: registered new interface driver xirlink-cit
usbcore: registered new interface driver zc3xx
usbcore: registered new interface driver ALi m5602
usbcore: registered new interface driver STV06xx
usbcore: registered new interface driver gspca_gl860
usbcore: registered new interface driver hdpvr
usbcore: registered new interface driver s2255
usbcore: registered new interface driver uvcvideo
USB Video Class driver (1.1.1)
omap_i2c omap_i2c.3: controller timed out
omap_i2c omap_i2c.3: controller timed out
omap_i2c omap_i2c.3: controller timed out
omap_i2c omap_i2c.3: controller timed out
omap_i2c omap_i2c.3: controller timed out
omap_i2c omap_i2c.3: controller timed out
omap_i2c omap_i2c.3: controller timed out
omap_i2c omap_i2c.3: controller timed out
OMAP Watchdog Timer Rev 0x01: initial timeout 60 sec
Linux telephony interface: v1.00
device-mapper: uevent: version 1.0.3
device-mapper: ioctl: 4.22.0-ioctl (2011-10-19) initialised: dm-devel@redhat.com
Bluetooth: HCI UART driver ver 2.2
Bluetooth: HCI H4 protocol initialized
Bluetooth: HCILL protocol initialized
Bluetooth: BlueFRITZ! USB driver ver 1.2
usbcore: registered new interface driver bfusb
Bluetooth: Generic Bluetooth USB driver ver 0.6
usbcore: registered new interface driver btusb
cpuidle: using governor ladder
cpuidle: using governor menu
usbcore: registered new interface driver usbhid
usbhid: USB HID core driver
logger: created 256K log 'log_main'
logger: created 256K log 'log_events'
logger: created 256K log 'log_radio'
logger: created 256K log 'log_system'
wm8960-codec 1-001a: No platform data supplied
[Asoc subsystem]:wm8960 init successful ...
asoc: wm8960-hifi <-> davinci-mcasp.1 mapping ok
ALSA device list:
  #0: AM335X EVM
oprofile: hardware counters not available
oprofile: using timer interrupt.
nf_conntrack version 0.5.0 (7961 buckets, 31844 max)
ip_tables: (C) 2000-2006 Netfilter Core Team
TCP cubic registered
NET: Registered protocol family 10
IPv6 over IPv4 tunneling driver
NET: Registered protocol family 17
can: controller area network core (rev 20090105 abi 8)
NET: Registered protocol family 29
can: raw protocol (rev 20090105)
can: broadcast manager protocol (rev 20090105 t)
Bluetooth: RFCOMM TTY layer initialized
Bluetooth: RFCOMM socket layer initialized
Bluetooth: RFCOMM ver 1.11
Bluetooth: BNEP (Ethernet Emulation) ver 1.3
Bluetooth: BNEP filters: protocol multicast
Bluetooth: HIDP (Human Interface Emulation) ver 1.2
lib80211: common routines for IEEE802.11 drivers
Registering the dns_resolver key type
VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev 3
ThumbEE CPU extension supported.
mux: Failed to setup hwmod io irq -22
Power Management for AM33XX family
Trying to load am335x-pm-firmware.bin (60 secs timeout)
Copied the M3 firmware to UMEM
omap_hwmod: wkup_m3: wkup_m3: hwmod data error: OMAP4 does not support st_shift
clock: disabling unused clocks to save power
Detected MACID=c4:ed:ba:8a:f3:6b
Goodix-TS 2-005d: Install gt811 driver.
Goodix-TS 2-005d: Driver Release Date:2012-02-08
Goodix-TS 2-005d: GT811 I2C TEST FAILED!Please check the HARDWARE connect
Goodix-TS 2-005d: Warnning: I2C communication might be ERROR!
Goodix-TS: probe of 2-005d failed with error -121
Failed to request GPIO:58, ERRNO:-16
gx801: probe of 2-0055 failed with error -16
omap_rtc omap_rtc: setting system clock to 2012-09-12 17:55:24 UTC (1347472524)
yaffs: dev is 32505864 name is "mtdblock8" rw
yaffs: yaffs: Attempting MTD mount of 31.8,"mtdblock8"

yaffs: yaffs_read_super: is_checkpointed 0
VFS: Mounted root (yaffs2 filesystem) on device 31:8.
Freeing init memory: 248K
Disabling lock debugging due to kernel taint
rtusb init rt2870 --->
usbcore: registered new interface driver rt2870
omap_wdt: init!
Try to bring net interface up ...
sh: 1: unknown operand
ifconfig eth0 hw ether 10:23:45:67:89:ab

CPSW phy found : id is : 0x1cc915
PHY 0:01 not found
ADDRCONF(NETDEV_UP): eth0: link is not ready
ifconfig eth0 192.168.1.6 netmask 255.255.255.0 up
add default gw 192.168.1.2
Done
[12/Sep/2012:17:55:31 +0000] boa: server version Boa/0.94.13
[12/Sep/2012:17:55:31 +0000] boa: server built Jun  5 2012 at 15:18:10.
[12/Sep/2012:17:55:31 +0000] boa: starting server pid=105, port 80
/etc/rc.d/init.d/leds: line 16: led-player: not found

Please press Enter to activate this console. Start Qt4 PDA

新的板子你们加了一个 pcf8563 吧，但内核配置是 rtc0 同步系统时钟的，现在是 /dev/rtc0 不行 ，/dev/rtc1 可以，am3358自带的 rtc 没法解决吗？

pcf8563 在什么地方，为什么原理图上没有？

zhxianbin 发表于 2014-1-16 09:39
pcf8563 在什么地方，为什么原理图上没有？

请联系销售索取CoreC的核心板的原理图。

zhxianbin 发表于 2014-1-15 17:35
新的板子你们加了一个 pcf8563 吧，但内核配置是 rtc0 同步系统时钟的，现在是 /dev/rtc0 不行 ，/dev/rtc1 ...

需要修改内核配置单，取消AM335X自带的RTC的支持，改用外扩的RTC，这样就只存在一个rtc设备了。在Device Drivers  --> Real Time Clock --> TI OMAP1（取消它），然后重新编译内核即可。