TI中文支持网[ 3.822831] systemd[1]: Set hostname to <am57xx-evm>.
[ 3.907943] random: systemd-gpt-aut: uninitialized urandom read (16 bytes read, 39 bits of entropy available)
[ 3.920656] random: systemd-gpt-aut: uninitialized urandom read (16 bytes read, 39 bits of entropy available)
[ 3.946970] random: systemd-sysv-ge: uninitialized urandom read (16 bytes read, 40 bits of entropy available)
[ 3.972061] random: systemd-sysv-ge: uninitialized urandom read (16 bytes read, 40 bits of entropy available)
[ 3.985480] random: systemd-sysv-ge: uninitialized urandom read (16 bytes read, 41 bits of entropy available)
[ 5.391660] omap_i2c 48070000.i2c: controller timed out
[ 6.431663] omap_i2c 48070000.i2c: controller timed out
[ 7.471662] omap_i2c 48070000.i2c: controller timed out
[ 8.511661] omap_i2c 48070000.i2c: controller timed out
[ 8.531668] ti_oppdm 4a003b20.oppdm: vdd failed for voltage 1201000uV(ref=1210000uV)[min 950000uV max 1500000uV]:-110
[ 9.561659] omap_i2c 48070000.i2c: controller timed out
[ 10.601658] omap_i2c 48070000.i2c: controller timed out
[ 11.641659] omap_i2c 48070000.i2c: controller timed out
[ 12.681658] omap_i2c 48070000.i2c: controller timed out
[ 12.701664] ti_oppdm 4a003b20.oppdm: vdd failed for voltage 1053000uV(ref=1160000uV)[min 885000uV max 1500000uV]:-110
[ 12.712348] cpufreq: __target_index: Failed to change cpu frequency: -110
[ 14.051659] omap_i2c 48070000.i2c: controller timed out
[ 15.091660] omap_i2c 48070000.i2c: controller timed out
[ 16.131660] omap_i2c 48070000.i2c: controller timed out
[ 17.171659] omap_i2c 48070000.i2c: controller timed out
[ 17.191666] ti_oppdm 4a003b20.oppdm: vdd failed for voltage 1201000uV(ref=1210000uV)[min 950000uV max 1500000uV]:-110
[ 18.221659] omap_i2c 48070000.i2c: controller timed out
[ 19.261659] omap_i2c 48070000.i2c: controller timed out
[ 20.301658] omap_i2c 48070000.i2c: controller timed out
[ 21.341658] omap_i2c 48070000.i2c: controller timed out
[ 21.361665] ti_oppdm 4a003b20.oppdm: vdd failed for voltage 1053000uV(ref=1160000uV)[min 885000uV max 1500000uV]:-110
[ 21.372347] cpufreq: __target_index: Failed to change cpu frequency: -110
[ 22.691660] omap_i2c 48070000.i2c: controller timed out
[ 23.731659] omap_i2c 48070000.i2c: controller timed out
[ 24.771658] omap_i2c 48070000.i2c: controller timed out
[ 25.081637] INFO: rcu_preempt detected stalls on CPUs/tasks:
[ 25.087330] 0-…: (1 GPs behind) idle=ec3/1/0 softirq=110/110 fqs=2101[ 25.094143] (detected by 1, t=2102 jiffies, g=-230, c=-231, q=4)
[ 25.100269] Task dump for CPU 0:
[ 25.103506] swapper/0 R running 0 0 0 0x00000002
[ 25.109899] Backtrace:[ 25.112371] [<c0010534>] (arch_cpu_idle) from [<c0027aa0>] (omap_do_wfi+0x8/0x5c)
[ 25.119881] Backtrace aborted due to bad frame pointer <c0915f2c>
[ 25.811662] omap_i2c 48070000.i2c: controller timed out
[ 25.831668] ti_oppdm 4a003b20.oppdm: vdd failed for voltage 1201000uV(ref=1210000uV)[min 950000uV max 1500000uV]:-110
[ 26.861659] omap_i2c 48070000.i2c: controller timed out
[ 27.901658] omap_i2c 48070000.i2c: controller timed out
[ 28.941659] omap_i2c 48070000.i2c: controller timed out
[ 29.981658] omap_i2c 48070000.i2c: controller timed out
[ 30.001664] ti_oppdm 4a003b20.oppdm: vdd failed for voltage 1053000uV(ref=1160000uV)[min 885000uV max 1500000uV]:-110
[ 30.012346] cpufreq: __target_index: Failed to change cpu frequency: -110
wei liu57：
应该是有一半的几率能够启动，一半的几率不能启动
Wesley He：
回复 wei liu57:
你好，
能否提供下硬件平台，软件版本等信息。
谢谢。
Steven Liu1：
EEPROM的逻辑处理了没有？DDR3做了相关配置没？
你给出的提示信息基本上都是AM5728在尝试着通过I2C去和PMIC通信，设置电压，这里没过去。是不是自己做的板子，还没系统化的做porting？
如果是的话，建议先看下这里面的相关培训资料，系统的了解一下比较好 https://training.ti.com/processor-sdk-training-series
