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spi: pl022: use DMA by default when probing from DT

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In the past we controlled the selection of DMA for a certain
host by a boolean switch in the platform data. Currently
there is no way to enable DMA on a PL022 probed from the
device tree. Let's default to trying to obtain DMA channels
in the DT case, and then we can always fail (and thus fall
back to PIO mode).

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Linus Walleij 2013-05-23 20:54:37 +02:00 committed by Mark Brown
parent e4aa937ec7
commit 5b547a7540
1 changed files with 1 additions and 0 deletions
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drivers/spi/spi-pl022.c
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@ -2083,6 +2083,7 @@ pl022_platform_data_dt_get(struct device *dev)
}
pd->bus_id = -1;
pd->enable_dma = 1;
of_property_read_u32(np, "num-cs", &tmp);
pd->num_chipselect = tmp;
of_property_read_u32(np, "pl022,autosuspend-delay",