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OMAP-L138 SOM and TPS65070 interrupt

Mike Looijmans
Expert 1275 points
Other Parts Discussed in Thread: TPS65070, OMAP-L138, OMAPL138

What pin/gpio/irq/whatever is the interrupt line from the TPS65070 on the OMAP? Is it connected at all?

I have an OMAP-L138 SOM from Logic-PD, which also includes a TPS65070 PMIC.

Via I2C I can ask the TPS to generate an interrupt when the AC or USB lines changes status. However, I cannot find how this interrupt is wired from TPS to OMAP.

If it isn't connected at all, I guess I'll have to poll the chip, which is a waste of resources.

  • 0
    TI__Guru** 116170 points

    Mike,

    This information is provided in the SOM schematics that are provided by logic PD. Please login to the Logic PD website and download the hardware design files that they provide. I took a quick look at this and the schematics show GPIO2[3] pin of OMAPL is connected to the PMIC_INTn pin.

    Let me know if you can`t access these files and I can send this out to you.

    Regards,

    Rahul

  • 0 in reply to Rahul Prabhu
    Expert 1275 points

    I tested your suggestion, and it works, programming the IRQ on GP2[3] is working as expected.

    Weird thing is, the schematics show it's connected to the "NMIn" pin of the OMAP, and not to GP2[3] at all.

  • 0 in reply to Rahul Prabhu
    Expert 1275 points

    Rahul Prabhu said:
    Let me know if you can`t access these files and I can send this out to you.

    Can you send me a link or something? I cannot seem to find a document describing the interconnections on the SOM board. For example, I'm trying to find the value of the "RSET" resistor (on the ISET pin of the tps65070) that configures the charge current.

  • 0 in reply to Mike Looijmans
    TI__Guru** 116170 points

    Mike,

    These schematics are provided on the OMAPL138 support page on the Logic PD website. If you register your product and create a login you will have full access to all the files.

    Regards,

    Rahul