TUSB1046-DCI: init to support DisplayPort when using I2C control

zhang chg

Part Number: TUSB1046-DCI

when using I2C control, how to init registers to support DisplayPort? I have tried to make changes Refer to Table 5 and Table 6 of spec

there is an error:

[ 34.665258] tegradc 15210000.nvdisplay: dp: aux write got error (0x10000100)
[ 34.665457] tegradc 15210000.nvdisplay: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100

What should I do ? thanks

over 5 years ago

0 Malik Barton57 over 5 years ago

TI__Guru 64326 points

Hi Zhang,

Could you share your I2C writes to TUSB1046-DCI? Also can you give more details on your test setup?

0 zhang chg over 5 years ago in reply to Malik Barton57

Prodigy 20 points

hi Malik

Thank you for your reply. I think the issue aux

->sbu is not enabled. I tried to set the register( 0x0a) to 0x02 or 0x06. but it don't work

0 Malik Barton57 over 5 years ago in reply to zhang chg

TI__Guru 64326 points

Hi Zhang,

Is the SBU-AUX mux configured to the right polarity. Do you have a schematic I could review?

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TUSB1046-DCI: init to support DisplayPort when using I2C control