Smartreflex driver and OPP compensation

Hello,

I was able to fix the OPP problem, but I still do have the sr_init failed. Following is the output log during startup...I've added some prints of my own to understand how the flow...

Booting kernel from Legacy Image at 82000000 ...
   Image Name:   Linux-3.2.0
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    2628384 Bytes = 2.5 MiB
   Load Address: 80008000
   Entry Point:  80008000
   Verifying Checksum ... OK
   Loading Kernel Image ... OK
OK
 
Starting kernel ...
 
Uncompressing Linux... done, booting the kernel.
[    0.000000] Linux version 3.2.0 (sramani@sr) (gcc version 4.5.3 20110311 (prerelease) (GCC) ) #25 Thu Nov 15 09:08:11 CST 2012
[    0.000000] CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c53c7d
[    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[    0.000000] Machine: am335xevm
[    0.000000] Memory policy: ECC disabled, Data cache writeback
[    0.000000] AM335X ES1.0 (sgx neon )
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 65024
[    0.000000] Kernel command line: root=/dev/mmcblk0p2 rootwait console=ttyO0,115200
[    0.000000] PID hash table entries: 1024 (order: 0, 4096 bytes)
[    0.000000] Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)
[    0.000000] Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)
[    0.000000] Memory: 256MB = 256MB total
[    0.000000] Memory: 254404k/254404k available, 7740k reserved, 0K highmem
[    0.000000] Virtual kernel memory layout:
[    0.000000]     vector  : 0xffff0000 - 0xffff1000   (   4 kB)
[    0.000000]     fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)
[    0.000000]     vmalloc : 0xd0800000 - 0xff000000   ( 744 MB)
[    0.000000]     lowmem  : 0xc0000000 - 0xd0000000   ( 256 MB)
[    0.000000]     modules : 0xbf000000 - 0xc0000000   (  16 MB)
[    0.000000]       .text : 0xc0008000 - 0xc049d000   (4692 kB)
[    0.000000]       .init : 0xc049d000 - 0xc04d6000   ( 228 kB)
[    0.000000]       .data : 0xc04d6000 - 0xc0529208   ( 333 kB)
[    0.000000]        .bss : 0xc052922c - 0xc05529c4   ( 166 kB)
[    0.000000] NR_IRQS:396
[    0.000000] IRQ: Found an INTC at 0xfa200000 (revision 5.0) with 128 interrupts
[    0.000000] Total of 128 interrupts on 1 active controller
[    0.000000] OMAP clockevent source: GPTIMER2 at 25000000 Hz
[    0.000000] OMAP clocksource: GPTIMER1 at 32768 Hz
[    0.000000] sched_clock: 32 bits at 32kHz, resolution 30517ns, wraps every 131071999ms
[    0.000000] Console: colour dummy device 80x30
[    0.000213] Calibrating delay loop... 498.89 BogoMIPS (lpj=2494464)
[    0.118194] pid_max: default: 32768 minimum: 301
[    0.118377] Security Framework initialized
[    0.118499] Mount-cache hash table entries: 512
[    0.118988] CPU: Testing write buffer coherency: ok
[    0.140533] omap_hwmod: pruss: failed to hardreset
[    0.141998] print_constraints: dummy:  
[    0.142425] NET: Registered protocol family 16
[    0.145294] OMAP GPIO hardware version 0.1
[    0.148956] omap_mux_init: Add partition: #1: core, flags: 0
[    0.151641]  
[    0.151672] ************** Calling  am335x_i2c0_init from am335x_evm_init ***************
[    0.151763]  omap_i2c.1: alias fck already exists
[    0.152038]  
[    0.152038] ************** Calling  setup_rp_connect2 from am335x_evm_init ***************
[    0.152038]  
[    0.152069] ************** Entering setup_rp_connect2 ***************
[    0.152557]  da8xx_lcdc.0: alias fck already exists
[    0.154388]  omap_hsmmc.0: alias fck already exists
[    0.156219]  omap2_mcspi.1: alias fck already exists
[    0.156524]  omap2_mcspi.2: alias fck already exists
[    0.157501]  edma.0: alias fck already exists
[    0.157531]  edma.0: alias fck already exists
[    0.157562]  edma.0: alias fck already exists
[    0.182098] bio: create slab <bio-0> at 0
[    0.184753] SCSI subsystem initialized
[    0.186981] usbcore: registered new interface driver usbfs
[    0.187408] usbcore: registered new interface driver hub
[    0.187683] usbcore: registered new device driver usb
[    0.187866] musb-ti81xx musb-ti81xx: musb0, board_mode=0x1, plat_mode=0x1
[    0.188323] musb-ti81xx musb-ti81xx: musb1, board_mode=0x1, plat_mode=0x0
[    0.208221] omap_i2c omap_i2c.1: bus 1 rev2.4.0 at 100 kHz
[    0.209381] tps65217 1-0024: TPS65217 ID 0x7 version 1.1
[    0.211151] print_constraints: DCDC1: 1800 mV  
[    0.212951] print_constraints: DCDC2: 3300 mV  
[    0.215148] print_constraints: DCDC3: 900 <--> 1100 mV at 1100 mV  
[    0.216888] print_constraints: LDO1: 1800 mV  
[    0.218627] print_constraints: LDO2: 3300 mV  
[    0.219757] print_constraints: LDO3: 1800 <--> 3300 mV at 1800 mV  
[    0.220916] print_constraints: LDO4: 1800 <--> 3300 mV at 2800 mV  
[    0.222900] Switching to clocksource gp timer
[    0.244750] musb-hdrc: version 6.0, ?dma?, otg (peripheral+host)
[    0.244995] musb-hdrc musb-hdrc.0: dma type: pio
[    0.245422] MUSB0 controller's USBSS revision = 4ea20800
[    0.245635] musb-hdrc musb-hdrc.0: MUSB HDRC host driver
[    0.245727] musb-hdrc musb-hdrc.0: new USB bus registered, assigned bus number 1
[    0.245910] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[    0.245941] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    0.245941] usb usb1: Product: MUSB HDRC host driver
[    0.245971] usb usb1: Manufacturer: Linux 3.2.0 musb-hcd
[    0.245971] usb usb1: SerialNumber: musb-hdrc.0
[    0.247131] hub 1-0:1.0: USB hub found
[    0.247192] hub 1-0:1.0: 1 port detected
[    0.248016] musb-hdrc musb-hdrc.0: USB Host mode controller at d083c000 using PIO, IRQ 18
[    0.248260] musb-hdrc musb-hdrc.1: dma type: pio
[    0.248657] MUSB1 controller's USBSS revision = 4ea20800
[    0.248840] musb-hdrc musb-hdrc.1: MUSB HDRC host driver
[    0.248870] musb-hdrc musb-hdrc.1: new USB bus registered, assigned bus number 2
[    0.248992] usb usb2: New USB device found, idVendor=1d6b, idProduct=0002
[    0.249023] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    0.249053] usb usb2: Product: MUSB HDRC host driver
[    0.249053] usb usb2: Manufacturer: Linux 3.2.0 musb-hcd
[    0.249084] usb usb2: SerialNumber: musb-hdrc.1
[    0.250061] hub 2-0:1.0: USB hub found
[    0.250091] hub 2-0:1.0: 1 port detected
[    0.250793] musb-hdrc musb-hdrc.1: USB OTG mode controller at d083e800 using PIO, IRQ 19
[    0.251342] NET: Registered protocol family 2
[    0.251586] IP route cache hash table entries: 2048 (order: 1, 8192 bytes)
[    0.251983] TCP established hash table entries: 8192 (order: 4, 65536 bytes)
[    0.252197] TCP bind hash table entries: 8192 (order: 3, 32768 bytes)
[    0.252349] TCP: Hash tables configured (established 8192 bind 8192)
[    0.252349] TCP reno registered
[    0.252380] UDP hash table entries: 256 (order: 0, 4096 bytes)
[    0.252410] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[    0.252655] NET: Registered protocol family 1
[    0.253112] RPC: Registered named UNIX socket transport module.
[    0.253112] RPC: Registered udp transport module.
[    0.253143] RPC: Registered tcp transport module.
[    0.253143] RPC: Registered tcp NFSv4.1 backchannel transport module.
[    0.253448] NetWinder Floating Point Emulator V0.97 (double precision)
[    0.253723] omap-gpmc omap-gpmc: GPMC revision 6.0
[    0.253753] Registering NAND on CS0
[    0.269226] VFS: Disk quotas dquot_6.5.2
[    0.269317] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[    0.270050] msgmni has been set to 496
[    0.274444] alg: No test for stdrng (krng)
[    0.275329] io scheduler noop registered
[    0.275360] io scheduler deadline registered
[    0.275451] io scheduler cfq registered (default)
[    0.277099] da8xx_lcdc da8xx_lcdc.0: GLCD: Found AFL800480W_7_0N_7BA0 panel
[    0.298583] Console: switching to colour frame buffer device 100x30
[    0.311096] omap_uart.0: ttyO0 at MMIO 0x44e09000 (irq = 72) is a OMAP UART0
[    1.001098] console [ttyO0] enabled
[    1.005676] omap_uart.1: ttyO1 at MMIO 0x48022000 (irq = 73) is a OMAP UART1
[    1.013793] omap_uart.2: ttyO2 at MMIO 0x48024000 (irq = 74) is a OMAP UART2
[    1.021759] omap_uart.3: ttyO3 at MMIO 0x481a6000 (irq = 44) is a OMAP UART3
[    1.029754] omap_uart.4: ttyO4 at MMIO 0x481a8000 (irq = 45) is a OMAP UART4
[    1.037780] omap_uart.5: ttyO5 at MMIO 0x481aa000 (irq = 46) is a OMAP UART5
[    1.059143] brd: module loaded
[    1.069274] loop: module loaded
[    1.074493] mtdoops: mtd device (mtddev=name/number) must be supplied
[    1.082061] omap2-nand driver initializing
[    1.086791] ONFI flash detected
[    1.090240] ONFI param page 0 valid
[    1.093963] NAND device: Manufacturer ID: 0x2c, Chip ID: 0xda (Micron MT29F2G08ABAEAH4)
[    1.153564] davinci_mdio davinci_mdio.0: davinci mdio revision 1.6
[    1.160095] davinci_mdio davinci_mdio.0: detected phy mask fffffffd
[    1.167480] davinci_mdio.0: probed
[    1.171081] davinci_mdio davinci_mdio.0: phy[1]: device 0:01, driver unknown
[    1.178771] Initializing USB Mass Storage driver...
[    1.184326] usbcore: registered new interface driver usb-storage
[    1.190612] USB Mass Storage support registered.
[    1.196197] mousedev: PS/2 mouse device common for all mice
[    1.202880] input: ti-tsc-adcc as /devices/platform/omap/tsc/input/input0
[    1.211608] omap_rtc omap_rtc: rtc core: registered omap_rtc as rtc0
[    1.218353] omap_rtc: already running
[    1.222473] i2c /dev entries driver
[    1.227600] OMAP Watchdog Timer Rev 0x01: initial timeout 60 sec
[    1.235717] cpuidle: using governor ladder
[    1.240753] cpuidle: using governor menu
[    1.247222] omap4_aes_mod_init: loading AM33X AES driver
[    1.252990] omap4-aes omap4-aes: AM33X AES hw accel rev: 3.02
[    1.259796] omap4_aes_probe: probe() done
[    1.264587] omap4_sham_mod_init: loading AM33X SHA/MD5 driver
[    1.270843] omap4-sham omap4-sham: AM33X SHA/MD5 hw accel rev: 4.03
[    1.285705] omap4_sham_probe: probe() done
[    1.292358] oprofile: hardware counters not available
[    1.297729] oprofile: using timer interrupt.
[    1.302337] TCP cubic registered
[    1.305755] NET: Registered protocol family 17
[    1.310516] Registering the dns_resolver key type
[    1.315582] VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev 3
[    1.323669] ThumbEE CPU extension supported.
[    1.328247] mux: Failed to setup hwmod io irq -22
[    1.334075] Power Management for AM33XX family
[    1.339019] Trying to load am335x-pm-firmware.bin (60 secs timeout)
[    1.345764] Copied the M3 firmware to UMEM
[    1.350891] sr_init: platform driver register failed
[    1.356170]  
[    1.356170] ************** Entering tps65217_init ***************
[    1.364166] Since we are using the ZCE package max speed cannot exceed 500 Mhz. When using the low speed grade part max speed is always 275 Mhz
[    1.377563] address of pdata = c04dbd70
[    1.382202] registered am33xx_sr device
[    1.392974] clock: disabling unused clocks to save power
[    1.420989] Detected MACID=0:17:ea:98:ab:7c
[    1.426910] cpsw: Detected MACID = 00:17:ea:98:ab:7d
[    1.433349] omap_rtc omap_rtc: setting system clock to 2012-10-15 22:58:08 UTC (1350341888)
[    1.442901] Waiting for root device /dev/mmcblk0p2...
[    1.455139] mmc0: host does not support reading read-only switch. assuming write-enable.
[    1.467376] mmc0: new high speed SD card at address 1234
[    1.473846] mmcblk0: mmc0:1234 SA02G 1.83 GiB  
[    1.481414]  mmcblk0: p1 p2
[    3.919219] kjournald starting.  Commit interval 5 seconds
[    3.925140] EXT3-fs (mmcblk0p2): warning: maximal mount count reached, running e2fsck is recommended
[    4.165649] EXT3-fs (mmcblk0p2): using internal journal
[    4.171142] EXT3-fs (mmcblk0p2): recovery complete
[    4.184600] EXT3-fs (mmcblk0p2): mounted filesystem with ordered data mode
[    4.191925] VFS: Mounted root (ext3 filesystem) on device 179:2.
[    4.198760] Freeing init memory: 228K
 INIT: version 2.86 booting  
Please wait: booting...
Starting udev
[    5.873779] alignment: ignoring faults is unsafe on this CPU.  Defaulting to fixup mode.
Remounting root file system...
Caching udev devnodes
ALSA: Restoring mixer settings...
/usr/sbin/alsactl: load_state:1625: No soundcards found...
Configuring network interfaces... [    8.917602] net eth0: CPSW phy found : id is : 0x20005c90
udhcpc (v1.13.2) started
Sending discover...
[   10.914886] PHY: 0:01 - Link is Up - 100/Full
Sending discover...
Sending select for 192.168.78.203...
Lease of 192.168.78.203 obtained, lease time 345600
adding dns 192.168.78.10
adding dns 192.168.78.47
adding dns 192.168.78.56
done.
Setting up IP spoofing protection: rp_filter.
 INIT: Entering runlevel: 5  
Starting telnet daemon.
Starting syslogd/klogd: done
Starting thttpd.

I understand that they sequence of initialization is not exactly the same as the EVM or the beaglebone. I would like to know what sequence to follow, that might also help understand the problem.

Thank you for your replies.

Regards

Santhosh