Hello,
We have a customized IMX6 Quad board, Part number : MCIMX6Q6AVT08AD. We are not able to bring up all
the 4 cpus.Details are below.
root@ota-p112-b1:~# dmesg | grep cpu
[ 0.000000] Initializing cgroup subsys cpu
[ 0.000000] Initializing cgroup subsys cpuacct
[ 0.000000] PERCPU: Embedded 12 pages/cpu @ee921000 s17088 r8192 d23872 u49152
[ 0.000000] pcpu-alloc: s17088 r8192 d23872 u49152 alloc=12*4096
[ 0.000000] pcpu-alloc: [0] 0 [0] 1
[ 0.000000] Kernel command line: console=ttymxc0,115200 root=/dev/mmcblk0p8 ro rootwait rootfstype=ext4 no_console_suspend=1 consoleblank=0 init=/sbin/init log_buf_len=1M mem=2047M loglevel=8 lpj=30000 oops=panic panic=1 maxcpus=4 ramoops.mem_address=0x8FF00000 ramoops.mem_size=1048576
[ 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
[ 0.032133] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
[ 0.090222] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
[ 0.159578] cpuidle: using governor ladder
[ 0.189573] cpuidle: using governor menu
root@ota-p112-b1:~# cat /proc/cpuinfo
processor : 0
model name : ARMv7 Processor rev 10 (v7l)
BogoMIPS : 6.00
Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpd32
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x2
CPU part : 0xc09
CPU revision : 10
processor : 1
model name : ARMv7 Processor rev 10 (v7l)
BogoMIPS : 6.00
Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpd32
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x2
CPU part : 0xc09
CPU revision : 10
Hardware : Freescale i.MX6 Quad/DualLite (Device Tree)
Revision : 0000
Serial : 0000000000000000
OCOTP Address for NUM_CORES[1:0] { bit 20 and 21 }
root@ota-p112-b1:~# devmem 0x021BC430
0x20020013
From above.Hardware support shows ok.
Please help to find the possible solution for this issue.
-Thanks,
kalyan.
