AM5748: DSP to ARM interrupt communication using UIO

Snehal Patel58

Part Number: AM5748

Hi All,

I am looking available interrupt between DSP and ARM for communication,

At Linux, I will be registering this interrupt number with UIO generic driver, this even will be triggered by DSP.

Regards,

Snehal

0 Michael Erdahl over 6 years ago

Hi Snehal,

Please take a look at table 18-2 in the TRM (www.ti.com/.../spruih8). In the table is a listing of the IRQs for DSP and ARM communication.

Regards,
Mike

0 Snehal Patel58 over 6 years ago in reply to Michael Erdahl

Hi Mike,

We found mailbox interrupt is free in IDK board, but when we try to register it with uio generic driver it's failing and giving following error,

3.012592] uio pdrv genric probe
[ 3.015965] irq: type mismatch, failed to map hwirq-24 for /ocp/crossbar@4a0!

we change device-tree for uio node, is anything other changes are required?

Regards,

Snehal

0 Michael Erdahl over 6 years ago in reply to Snehal Patel58

Hi Snehal,

Sorry I missed your follow-up question - have you also added this to your device tree? If yes, can you provide the portion you modified?

Regards,
Mike

Processors forum