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spi: davinci: Choose correct pre-scaler limit based on SOC

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Currently the pre-scaler limit is incorrect. The value differs slightly
for various devices so a single value can't be used. Using the compatible
field select the correct pre-scaler limit.

Add new compatible field value for Keystone devices to support their
unique pre-scaler limit value.

Signed-off-by: Franklin S Cooper Jr <fcooper@ti.com>
Reviewed-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Franklin S Cooper Jr
2015-07-22 07:32:22 -05:00
committed by Mark Brown
parent bba732d866
commit fa466c9197
3 changed files with 39 additions and 7 deletions
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include/linux/platform_data/spi-davinci.h
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@@ -49,6 +49,7 @@ struct davinci_spi_platform_data {
u8 num_chipselect;
u8 intr_line;
u8 *chip_sel;
u8 prescaler_limit;
bool cshold_bug;
enum dma_event_q dma_event_q;
};