内核：linux3.5
屏幕：10寸
问题：在执行qt界面程序时会出现卡死状态，经检查i2c的SDA线被置地，也看了好多资料，有可以在软件方面直接解决的办法吗？
字符界面报错：[ 3325.335000] s3c-i2c s3c2440-i2c.7: timeout waiting for bus idle
[ 3329.335000] s3c-i2c s3c2440-i2c.7: cannot get bus (error -110)
[ 3333.335000] s3c-i2c s3c2440-i2c.7: cannot get bus (error -110)
[ 3333.335000] ft5x0x_i2c_rxdata: i2c read error: -121
[ 3333.335000] ft5x0x_read_data: read touch data failed, -121
[ 3337.335000] s3c-i2c s3c2440-i2c.7: cannot get bus (error -110)
[ 3341.335000] s3c-i2c s3c2440-i2c.7: cannot get bus (error -110)
[ 3341.335000] ft5x0x_i2c_rxdata: i2c read error: -121
[ 3341.335000] ft5x0x_read_data: read touch data failed, -121
[ 3345.335000] s3c-i2c s3c2440-i2c.7: cannot get bus (error -110)
[ 3349.335000] s3c-i2c s3c2440-i2c.7: cannot get bus (error -110)
[ 3349.335000] ft5x0x_i2c_rxdata: i2c read error: -121
[ 3349.335000] ft5x0x_read_data: read touch data failed, -121
