I booting linux-3.15 on pcDuino V3(A20 onboard). 1,second CPU failed,I used https://github.com/jwrdegoede/u-boot-sunxi,then fixed it. 2,missing clock-frequency property The following is a useful log [ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1 [ 0.000000] Hierarchical RCU implementation. [ 0.000000] RCU restricting CPUs from NR_CPUS=4 to nr_cpu_ids=2. [ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2 [ 0.000000] NR_IRQS:16 nr_irqs:16 16 [ 0.000000] Architected cp15 timer(s) running at 24.00MHz (phys). [ 0.000007] sched_clock: 56 bits at 24MHz, resolution 41ns, wraps every 2863311519744ns [ 0.000014] Switching to timer-based delay loop [ 0.000281] sched_clock: 32 bits at 24MHz, resolution 41ns, wraps every 178956969942ns [ 0.000402] sched_clock: 32 bits at 160MHz, resolution 6ns, wraps every 26843545593ns [ 0.000553] Console: colour dummy device 80x30 [ 0.000581] Calibrating delay loop (skipped), value calculated using timer frequency.. 48.00 BogoMIPS (lpj=240000) [ 0.000593] pid_max: default: 32768 minimum: 301 [ 0.000701] Mount-cache hash table entries: 2048 (order: 1, 8192 bytes) [ 0.000712] Mountpoint-cache hash table entries: 2048 (order: 1, 8192 bytes) [ 0.001230] CPU: Testing write buffer coherency: ok [ 0.001486] /cpus/cpu@0 missing clock-frequency property [ 0.001503] /cpus/cpu@1 missing clock-frequency property [ 0.001514] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000 [ 0.001541] Setting up static identity map for 0x404755e0 - 0x40475638 [ 0.002624] CPU1: Booted secondary processor [ 0.002665] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001 [ 0.002769] Brought up 2 CPUs [ 0.002789] SMP: Total of 2 processors activated. [ 0.002795] CPU: All CPU(s) started in HYP mode. [ 0.002800] CPU: Virtualization extensions available. [ 0.003351] devtmpfs: initialized [ 0.006961] VFP support v0.3: implementor 41 architecture 2 part 30 variant 7 rev 4 [ 0.007171] pinctrl core: initialized pinctrl subsystem [ 0.007357] regulator-dummy: no parameters [ 0.011695] NET: Registered protocol family 16 [ 0.011962] DMA: preallocated 256 KiB pool for atomic coherent allocations [ 0.020704] vcc3v0: 3000 mV [ 0.020865] vcc3v3: 3300 mV
also I can see /proc/cpuinfo # cat /proc/cpuinfo processor : 0 model name : ARMv7 Processor rev 4 (v7l) Features : swp half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm CPU implementer : 0x41 CPU architecture: 7 CPU variant : 0x0 CPU part : 0xc07 CPU revision : 4 processor : 1 model name : ARMv7 Processor rev 4 (v7l) Features : swp half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm CPU implementer : 0x41 CPU architecture: 7 CPU variant : 0x0 CPU part : 0xc07 CPU revision : 4 Hardware : Allwinner sun7i (A20) Family Revision : 0000 Serial : 0000000000000000 is there some way to fixed it? -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to linux-sunxi+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.