Hi All,
we are using imx6ul based custom board with Linux version 3.14.38-6UL. We interfaced ST7036 LCD driver to i2c3.
When we tried i2cdetect by giving ./i2cdetect -y 2 below is the output
root@imx6ulevk:/# ./i2cdetect -y 2
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --
When we probed the SDA and SCL lines there is no clock pulse on SCL line. The SCL line is always High.
How to resolve this
EDIT1:
Checked with imx6ul development board
root@imx6ulevk:/# ./i2cget 1 0x1e 0x1e c
WARNING! This program can confuse your I2C bus, cause data loss and worse!
I will read from device file /dev/i2c-1, chip address 0x1e, data address
0x1e, using write byte/read byte.
Continue? [Y/n] y
Warning - write failed
Error: Read failed
With Development board also it is not successful
