There is a problem that fails to initialize the LCD timing controller external.

[takashitakahash]

There is a problem that fails to initialize the LCD timing controller external.

Communication speed is 400kHz.

weight stabilization time is specified as follows in i2c_imx_start of i2c-imx.c.

Phenomenon initialization to succeed if change to 2ms about this 50us has occurred.

/ * Wait controller to be stable * /

  udelay (50);

Question

The meaning of this weight time,

, the impact of changing (like needing increased weight more in the case of 400kHz) and whether or not depends on the communication speed.

  / * Wait controller to be stable * /

  udelay (50);

The location of the source code

\ linux-3.0.35 \ drivers \ i2c \ busses \ i2c-imx.c

[YixingKong]

Takashi

This discussion is closed since no activity. If you still need help, please feel free to reply with an update to this discussion, or create another discussion.

Thanks,

Yixing

[YixingKong]

Yakashi

We have not got your response yet and will close the discussion in 3 days. If you still need help, please feel free to reply with an update to this discussion.

Thanks,

Yixing

[YixingKong]

Takashi

We are sorry for getting back to you so late. Are you still stuck with the issue? If you have somehow to resolved the

issue, can we close the discussion? If you still need help, please feel free to reply with an update to this discussion.

Thanks,
Yixing

[jimmychan]

Which board are you using?

How do you connect the LCD to i.MX6?

Which bsp are your using?