> -----Original Message-----
> From: Premi, Sanjeev
> Sent: Friday, June 24, 2011 9:54 PM
> To: linux-omap@xxxxxxxxxxxxxxx; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
> Cc: Premi, Sanjeev; Paul Walmsley
> Subject: [PATCH] omap3: beagle: Use GPTIMERi 1 for clockevents
[sp] I do notice a typo in subject.
Will fix in next rev with any other comments - if any.
>
> The current selection of the GPTIMER on was result of
> a hardware issue in early versions of the Beagleboards
> (Ax and B1 thru B4). [1] [2]
>
> Its been long since the hardware issue has been fixed.
> This patch uses GPTIMER 1 for all newer board revisions
> incl. Beagleboard XM.
>
> [1]
> http://thread.gmane.org/gmane.comp.hardware.beagleboard.general/91
> [2] Errata #7 at http://elinux.org/BeagleBoard#Errata
>
> Signed-off-by: Sanjeev Premi <premi@xxxxxx>
> Cc: Paul Walmsley <paul@xxxxxxxxx>
Few lines from top of boot log on Beagleboard XM:
[ 0.000000] Linux version 3.0.0-rc3-14001-gba7aaf5-dirty (premi@mylinux) (gcc version 4.3.3 (Sourcery G++ Lite 2009q1-203) ) #18 SMP Fri Jun 24 20:40:30 IST 2011
[ 0.000000] CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c53c7f
[ 0.000000] CPU: VIPT nonaliasing data cache, VIPT aliasing instruction cache
[ 0.000000] Machine: OMAP3 Beagle Board
[ 0.000000] Reserving 12582912 bytes SDRAM for VRAM
[ 0.000000] Memory policy: ECC disabled, Data cache writeback
[ 0.000000] OMAP3630 ES1.2 (l2cache iva sgx neon isp 192mhz_clk )
[ 0.000000] SRAM: Mapped pa 0x40200000 to va 0xfe400000 size: 0x10000
[ 0.000000] Clocking rate (Crystal/Core/MPU): 26.0/400/600 MHz
[ 0.000000] Reprogramming SDRC clock to 400000000 Hz
[ 0.000000] dpll3_m2_clk rate change failed: -22
[ 0.000000] PERCPU: Embedded 7 pages/cpu @c0bdd000 s5504 r8192 d14976 u32768
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 61952
[ 0.000000] Kernel command line: console=ttyO2,115200n8 vram=12M omapfb.mode=dvi:1024x768MR-16@60 omapdss.def_disp=dvi root=/dev/ram0 rw initrd=0x81600000,24M earlyprintk=serial,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: 244MB = 244MB total
[ 0.000000] Memory: 212904k/212904k available, 49240k 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] DMA : 0xffc00000 - 0xffe00000 ( 2 MB)
[ 0.000000] vmalloc : 0xd0800000 - 0xf8000000 ( 632 MB)
[ 0.000000] lowmem : 0xc0000000 - 0xd0000000 ( 256 MB)
[ 0.000000] modules : 0xbf000000 - 0xc0000000 ( 16 MB)
[ 0.000000] .init : 0xc0008000 - 0xc003e000 ( 216 kB)
[ 0.000000] .text : 0xc003e000 - 0xc04330f0 (4053 kB)
[ 0.000000] .data : 0xc0434000 - 0xc048aaf0 ( 347 kB)
[ 0.000000] Hierarchical RCU 00000 (revision 4.0) with 96 interrupts
[ 0.000000] Total of 96 interrupts on 1 active controller
[ 0.000000] OMAP clockevent source: GPTIMER1 at 32768 Hz
[ 0.000000] sched_clock: 32 bits at 32kHz, resolution 30517ns, wraps every 131071999ms
[ 0.000000] Console: colour dummy device 80x30
[ 0.000000] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar
[ 0.000000] ... MAX_LOCKDEP_SUBCLASSES: 8
[ 0.000000] ... MAX_LOCK_DEPTH: 48
[ 0.000000] ... MAX_LOCKDEP_KEYS: 8191
[ 0.000000] ... CLASSHASH_SIZE: 4096
[ 0.000000] ... MAX_LOCKDEP_ENTRIES: 16384
[ 0.000000] ... MAX_LOCKDEP_CHAINS: 32768
[ 0.000000] ... CHAINHASH_SIZE: 16384
[ 0.000000] memory used by lock dependency info: 3695 kB
[ 0.000000] per task-struct memory footprint: 1152 bytes
[ 0.000823] Calibrating delay loop... 597.64 BogoMIPS (lpj=2334720)
[ 0.093780] pid_max: default: 32768 minimum: 301
[ 0.094329] Security Framework initialized
[ 0.094635] Mount-cache hash table entries: 512
[ 0.098175] CPU: Testing write buffer coherency: ok
[ 0.101074] Brought up 1 CPUs
[ 0.101104] SMP: Total of 1 processors activated (597.64 BogoMIPS).
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