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IMX6 - HDMI I2C bus

Question asked by Asha Sampathkumar on Jun 28, 2017
Latest reply on Jul 10, 2017 by Artur Petukhov

Dear all,

       We are working on a custom board based on IMX6Dual core and need to enable HDMI support on our board.

As per the reference manual, HDMI transmitter has I2C/DDC master to read the EDID of sink devices.

Chapter 34 under  HDMI External signals section given,

Signal

Description

Pad Mode

Direction

HDMI_TX_DDC_SCL

(DDC_SCL)

SCL Signal

EIM_EB2 ALT4

 

KEY_COL3 ALT2

I/O

HDMI_TX_DDC_SDA

(DDC_SDA)

SDA Signal

EIM_D16 ALT4

 

KEY_ROW3 ALT2

I/O

All pads mentioned above corresponds to I2C2 bus.

It means HDMI I2C/DDC master should be on I2C2 bus?

we have used I2C2 bus for touchscreen data. It is possible to use I2C1/3 bus for HDMI?

 

Thanks ,

Asha

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