TCI6638K2K: Processing MDIO PHY link status interrupt

KIHA CHUNG

Part Number: TCI6638K2K

Hello,

We want to process interrupts for the event of Ethernet PHY link status change in "real-time"

According to Keystone 1G Ethernet user guide, PHY link status interrupt flag is set in a register LINKINTRAW or LINKINTMASKED.

Is there any way that the interrupt set in the register LINKINTRAW or LINKINTMASKED is fed into any interrupt controller, such as CIC or Corpac INTC.

That is, we want to know if it is possible to get that interrupt in HW way without SW accessing(polling) LINKINTRAW or LINKINTMASKED registers.

over 8 years ago

0 Yordan Kovachev over 8 years ago

TI__Guru**** 161600 points

Hi,

Can you share what software are you running on your device?

Best Regards,
Yordan

0 KIHA CHUNG over 8 years ago in reply to Yordan Kovachev

Intellectual 460 points

We are using PDK K2HK 4.0.2

0 db_woodall over 8 years ago

TI__Mastermind 21025 points

Hi Kiha,

Mapping interrupts is a multi-step process due to the complexity of the K2K device. First, you need to identify the desired interrupt in the appropriate peripheral user guide (which you have already done), then you look in the device datasheet (if you don't have it, search for SPRS836D on ti.com). The tables in Section 6.3 will show every interrupt source that is connected to an interrupt controller (ARM or DSP). Once you know this mapping, then you can program the interrupt controllers in the ARM or DSP to handle them. It seems that you want this interrupt to map to an ARM, presumably running Linux. I'm not familiar with the Linux functions to set this up, so I can't help you there. But the answer to your question will be found in Section 6.3 of the datasheet. If the interrupt can be connected, it will be listed in these tables.

-dave

0 db_woodall over 8 years ago in reply to db_woodall

TI__Mastermind 21025 points

Please let us know if there's anything else, so we can close the ticket.

thanks, dave

0 KIHA CHUNG over 8 years ago in reply to db_woodall

Intellectual 460 points

No need anything else. Thank you.

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TCI6638K2K: Processing MDIO PHY link status interrupt