Tiny4412起来之后，我测试一下AD转换，在命令行输入 adc-test 命令出现下面的问题
[root@FriendlyARM /]# adc-test
press Ctrl-C to stop
[ 30.945000] s3c-adc samsung-adc-v4: s3c_adc_read: ec90b540 is timed out
ADC Value: -110
[ 31.945000] s3c-adc samsung-adc-v4: s3c_adc_read: ec90b540 is timed out
ADC Value: -110
[ 32.945000] s3c-adc samsung-adc-v4: s3c_adc_read: ec90b540 is timed out
ADC Value: -110
[ 33.945000] s3c-adc samsung-adc-v4: s3c_adc_read: ec90b540 is timed out
ADC Value: -110
