Messages in this thread | | | Subject | Re: [PATCH 0/6] Add Microchip MCP25XXFD CAN driver | From | Marc Kleine-Budde <> | Date | Mon, 22 Jun 2020 14:54:15 +0200 |
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On 6/22/20 2:43 PM, Kurt Van Dijck wrote: > I get RX-0: FIFO overflows in listen-only mode (back-to-back burst of > the single other node).
Single other node? Who's ACKing the CAN frames?
> The SPI peripheral does not use DMA :-(.
The SPI messages are quite small, so DMA wont help either. Getting rid of the IRQ and polling for completion is the way to go.
> Do you have, by accident, some freescale SPI fixes lying around?
nope
> It's not the biggest problem on my side, but is proves the system not > being guarded against load.
Do you have freq scaling activated?
Marc
-- Pengutronix e.K. | Marc Kleine-Budde | Embedded Linux | https://www.pengutronix.de | Vertretung West/Dortmund | Phone: +49-231-2826-924 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
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