Messages in this thread | | | Date | Mon, 28 Jan 2013 17:15:23 +0900 | Subject | RE: [PATCH v2] ARM: PL011: Add support for Rx DMA buffer polling | From | Chanho Min <> |
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>Well, I thought I had explained that I'd prefer to see the poll rate >adjusted with the baud rate, but maybe I wasn't explicit enough. >Instead, what we seem to have ended up with are two new entries in >platform data (which we're trying to get away from with DT): > >+ unsigned int dma_rx_poll_rate; >+ unsigned int dma_rx_poll_timeout; > >If this were to be done, then receive DMA could be used on the Versatile >PB platforms without having it suck CPU usage unnecessarily at slower >baud rates. This patch is working well on our pl011+ pl080 platform. If no data is received during time-out, no tick timer works. Do you want to adjust the poll rate with the baud rate additionally?
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