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Groups > linux.kernel > #1557830
| From | Kevin Hilman <khilman@baylibre.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [RESEND] spi: davinci: Allow device tree devices to use DMA |
| Date | 2017-01-12 22:40 +0100 |
| Message-ID | <sYVge-Ak-23@gated-at.bofh.it> (permalink) |
| References | <sWto5-420-3@gated-at.bofh.it> |
| Organization | BayLibre |
David Lechner <david@lechnology.com> writes: > This allows SPI devices specified in a device tree to use DMA when the > master controller. Enabling DMA for spi-davinci isn't quite ready yet since this driver is blindly using dma_map_single() on addresses passed in. MTD seems to use vmalloc'd buffers, which cannot be passed direclty to dma_map_single(). I thinks this driver needs an update to use spi_map_buf() to be able to handle vmalloc'd buffers before always enabling DMA. Kevin
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[RESEND] spi: davinci: Allow device tree devices to use DMA David Lechner <david@lechnology.com> - 2017-01-06 04:30 +0100
Re: [RESEND] spi: davinci: Allow device tree devices to use DMA Mark Brown <broonie@kernel.org> - 2017-01-09 20:50 +0100
Re: [RESEND] spi: davinci: Allow device tree devices to use DMA David Lechner <david@lechnology.com> - 2017-01-09 21:50 +0100
Re: [RESEND] spi: davinci: Allow device tree devices to use DMA Mark Brown <broonie@kernel.org> - 2017-01-10 18:00 +0100
Re: [RESEND] spi: davinci: Allow device tree devices to use DMA Kevin Hilman <khilman@baylibre.com> - 2017-01-12 22:40 +0100
Re: [RESEND] spi: davinci: Allow device tree devices to use DMA Mark Brown <broonie@kernel.org> - 2017-01-13 13:10 +0100
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