"max11801_ts 1-0048: FIFO_RD_AUX_MSB read fails" IMX6Q

[gkt]

Hello all.

I am working on an imx6qsabresd board. While I am booting the device,  the console adding the "max11801_ts 1-0048: FIFO_RD_AUX_MSB read fails" message continuously. It is annoying and hard to use the console because of this error. I did a research about this error. The touchscreen driver which is controlled by using I2C is causing this error. Hence, I want to disable the I2C in device tree to avoid this error. (I am open to try your own solutions, I have doubts about this solution) However, I couldn't accomplish that.  If you help me, I will be more than happy.

Many thanks. 

[igorpadykov]

Hi Giray

one can check signal with oscilloscope and tweak pull resistor value

if necessary for improving waveforms. Also one can try to decrease i2c frequency.

Best regards
igor
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[gkt]

Hi Igor.

Is there a way to avoid this error without manipulating the hardware? I do not want to solve this error. I just do not want to see it on the console continuously popping out. I thought, I could comment the line which causes error message on the console in the source code. Do you think this is a good solution?

Many thanks.

[gkt · Accepted solution]

I modified the linux kernel defconfig to avoid the error. I disabled the touchscreen and the error is gone.

Thanks all.