A and B two devices are DRP, if TYPE - C together, how to rule A device for DFP?

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lyly_3077176
Level 1
Level 1

A and B two devices are DRP, if TYPE - C together, how to rule A  for DFP?chip is PD3125。

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1 Solution
ShifangZ_26
Moderator
Moderator
Moderator
10 likes given 250 sign-ins 1000 replies posted

Hi ly lyl,

Below two ways you can refer to.

1. You can use try source on CC line for A device.

2. You can let A device and B device working as the role when it is attached. after that, you can add some customize logic in A device to check the role of A device, if the A device is power sink role, you could use DR_SWAP to make A device become DFP role.

Best Regards,

Lisa

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1 Reply
ShifangZ_26
Moderator
Moderator
Moderator
10 likes given 250 sign-ins 1000 replies posted

Hi ly lyl,

Below two ways you can refer to.

1. You can use try source on CC line for A device.

2. You can let A device and B device working as the role when it is attached. after that, you can add some customize logic in A device to check the role of A device, if the A device is power sink role, you could use DR_SWAP to make A device become DFP role.

Best Regards,

Lisa

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