On a linux-next kernel built for the Pandaboard, disabling CONFIG_OMAP_32K_TIMER makes the kernel use the gptimer as the clocksource, but this appears to be non-functional. Judging from the all-zeros printk timings and the fact the "sleep 1" hangs indefinitely, it looks like the clocksource reads are always zero. Boot log below and .config attached. Ideas? [ 0.000000] Linux version 2.6.39-rc6-next-20110506+ (rabin@debian) (gcc version 4.4.1 (Sourcery G++ Lite 2010q1-202) ) #183 PREEMPT Sat May 7 22:02:42 IST 2011 [ 0.000000] CPU: ARMv7 Processor [411fc092] revision 2 (ARMv7), cr=10c53c7f [ 0.000000] CPU: VIPT nonaliasing data cache, VIPT aliasing instruction cache [ 0.000000] Machine: OMAP4 Panda board [ 0.000000] Memory policy: ECC disabled, Data cache writeback [ 0.000000] OMAP4430 ES2.1 [ 0.000000] SRAM: Mapped pa 0x40300000 to va 0xfe400000 size: 0xe000 [ 0.000000] On node 0 totalpages: 131072 [ 0.000000] free_area_init_node: node 0, pgdat c0192ad8, node_mem_map c01db000 [ 0.000000] Normal zone: 1024 pages used for memmap [ 0.000000] Normal zone: 0 pages reserved [ 0.000000] Normal zone: 130048 pages, LIFO batch:31 [ 0.000000] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768 [ 0.000000] pcpu-alloc: [0] 0 [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 130048 [ 0.000000] Kernel command line: console=ttyO2,115200 early_printk debug mem=512M [ 0.000000] PID hash table entries: 2048 (order: 1, 8192 bytes) [ 0.000000] Dentry cache hash table entries: 65536 (order: 6, 262144 bytes) [ 0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072 bytes) [ 0.000000] Memory: 512MB = 512MB total [ 0.000000] Memory: 512640k/512640k available, 11648k 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 : 0xe0800000 - 0xf8000000 ( 376 MB) [ 0.000000] lowmem : 0xc0000000 - 0xe0000000 ( 512 MB) [ 0.000000] modules : 0xbf000000 - 0xc0000000 ( 16 MB) [ 0.000000] .init : 0xc0008000 - 0xc0024000 ( 112 kB) [ 0.000000] .text : 0xc0024000 - 0xc0170cec (1332 kB) [ 0.000000] .data : 0xc0172000 - 0xc0193100 ( 133 kB) [ 0.000000] Preemptible hierarchical RCU implementation. [ 0.000000] Verbose stalled-CPUs detection is disabled. [ 0.000000] NR_IRQS:410 [ 0.000000] omap_hwmod: dpll_mpu_m2_ck: missing clockdomain for dpll_mpu_m2_ck. [ 0.000000] OMAP clockevent source: GPTIMER1 at 38400000 Hz [ 0.000000] sched_clock: 32 bits at 38MHz, resolution 26ns, wraps every 111848ms [ 0.000000] Calibrating delay loop... 2007.04 BogoMIPS (lpj=10035200) [ 0.000000] pid_max: default: 32768 minimum: 301 [ 0.000000] Mount-cache hash table entries: 512 [ 0.000000] CPU: Testing write buffer coherency: ok [ 0.000000] L310 cache controller enabled [ 0.000000] l2x0: 16 ways, CACHE_ID 0x410000c4, AUX_CTRL 0x7e470000, Cache size: 1048576 B [ 0.000000] devtmpfs: initialized [ 0.000000] omap_hwmod: _populate_mpu_rt_base found no _mpu_rt_va for emif_fw [ 0.000000] omap_hwmod: _populate_mpu_rt_base found no _mpu_rt_va for l3_instr [ 0.000000] omap_hwmod: _populate_mpu_rt_base found no _mpu_rt_va for l3_main_1 [ 0.000000] omap_hwmod: _populate_mpu_rt_base found no _mpu_rt_va for l3_main_2 [ 0.000000] omap_hwmod: _populate_mpu_rt_base found no _mpu_rt_va for l4_abe [ 0.000000] omap_hwmod: _populate_mpu_rt_base found no _mpu_rt_va for l4_cfg [ 0.000000] omap_hwmod: _populate_mpu_rt_base found no _mpu_rt_va for l4_per [ 0.000000] omap_hwmod: _populate_mpu_rt_base found no _mpu_rt_va for l4_wkup [ 0.000000] omap_hwmod: _populate_mpu_rt_base found no _mpu_rt_va for mpu_private [ 0.000000] omap_hwmod: _populate_mpu_rt_base found no _mpu_rt_va for dsp [ 0.000000] omap_hwmod: _populate_mpu_rt_base found no _mpu_rt_va for ipu [ 0.000000] omap_hwmod: l3_div_ck: missing clockdomain for l3_div_ck. [ 0.000000] omap_hwmod: dss_dispc: softreset failed (waited 10000 usec) [ 0.000000] omap_hwmod: dss_rfbi: softreset failed (waited 10000 usec) [ 0.000000] omap_hwmod: ipu: failed to hardreset [ 0.000000] print_constraints: dummy: [ 0.000000] GPMC revision 6.0 [ 0.000000] OMAP GPIO hardware version 0.1 [ 0.000000] OMAP GPIO hardware version 0.1 [ 0.000000] OMAP GPIO hardware version 0.1 [ 0.000000] OMAP GPIO hardware version 0.1 [ 0.000000] OMAP GPIO hardware version 0.1 [ 0.000000] OMAP GPIO hardware version 0.1 [ 0.000000] omap_mux_init: Add partition: #1: core, flags: 2 [ 0.000000] omap_mux_init: Add partition: #2: wkup, flags: 2 [ 0.000000] error setting wl12xx data [ 0.000000] Failed omap4_twl6030_hsmmc_set_late_init [ 0.000000] Failed omap4_twl6030_hsmmc_set_late_init [ 0.000000] OMAP DMA hardware revision 0.0 [ 0.000000] print_constraints: vwl1271: 1800 mV [ 0.000000] omap_i2c omap_i2c.1: bus 1 rev4.0 at 400 kHz [ 0.000000] Skipping twl internal clock init and using bootloader value (unknown osc rate) [ 0.000000] twl6030: PIH (irq 39) chaining IRQs 368..387 [ 0.000000] print_constraints: VMMC: 1200 <--> 3000 mV at 1800 mV normal standby [ 0.000000] print_constraints: VPP: 1800 <--> 2500 mV at 1900 mV normal standby [ 0.000000] print_constraints: VANA: 2100 mV normal standby [ 0.000000] print_constraints: VCXIO: 1800 mV normal standby [ 0.000000] print_constraints: VDAC: 1800 mV normal standby [ 0.000000] print_constraints: VAUX2_6030: 1200 <--> 2800 mV at 1800 mV normal standby [ 0.000000] print_constraints: VAUX3_6030: 1000 <--> 3000 mV at 1200 mV normal standby [ 0.000000] print_constraints: CLK32KG: [ 0.000000] omap_i2c omap_i2c.2: bus 2 rev4.0 at 400 kHz [ 0.000000] omap_i2c omap_i2c.3: bus 3 rev4.0 at 100 kHz [ 0.000000] omap_i2c omap_i2c.4: bus 4 rev4.0 at 400 kHz [ 0.000000] Switching to clocksource gp timer [ 0.000000] Unpacking initramfs... [ 0.000000] Freeing initrd memory: 5208K [ 0.000000] omap_uart.0: ttyO0 at MMIO 0x4806a000 (irq = 104) is a OMAP UART0 [ 0.000000] omap_uart.1: ttyO1 at MMIO 0x4806c000 (irq = 105) is a OMAP UART1 [ 0.000000] omap_uart.2: ttyO2 at MMIO 0x48020000 (irq = 106) is a OMAP UART2 [ 0.000000] console [ttyO2] enabled [ 0.000000] omap_uart.3: ttyO3 at MMIO 0x4806e000 (irq = 102) is a OMAP UART3 [ 0.000000] i2c /dev entries driver [ 0.000000] OMAP Watchdog Timer Rev 0x00: initial timeout 60 sec [ 0.000000] Registered led device: pandaboard::status1 [ 0.000000] Registered led device: pandaboard::status2 [ 0.000000] VFP support v0.3: implementor 41 architecture 3 part 30 variant 9 rev 1 [ 0.000000] Power Management for TI OMAP4. [ 0.000000] clock: disabling unused clocks to save power [ 0.000000] Kernel not built with RTC support, ALARM timers will not wake from suspend [ 0.000000] regulator_init_complete: VDAC: incomplete constraints, leaving on [ 0.000000] regulator_init_complete: VCXIO: incomplete constraints, leaving on [ 0.000000] regulator_init_complete: VANA: incomplete constraints, leaving on [ 0.000000] Freeing init memory: 112K
Attachment:
gptimer-config
Description: Binary data
