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authorVignesh Raghavendra <vigneshr@ti.com>2020-02-04 18:18:15 +0530
committerMark Brown <broonie@kernel.org>2020-02-06 15:53:40 +0000
commite4e8276a4f652be2c7bb783a0155d4adb85f5d7d (patch)
tree7db6e01f72ead94784ed17b0da28592968ac3097 /include/linux/platform_data
parenta5362b84bdff1def10c136e36ef2126f7f545b2c (diff)
spi: spi-omap2-mcspi: Handle DMA size restriction on AM65x
On AM654, McSPI can only support 4K - 1 bytes per transfer when DMA is enabled. Therefore populate master->max_transfer_size callback to inform client drivers of this restriction when DMA channels are available. Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Link: https://lore.kernel.org/r/20200204124816.16735-2-vigneshr@ti.com Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/linux/platform_data')
-rw-r--r--include/linux/platform_data/spi-omap2-mcspi.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/platform_data/spi-omap2-mcspi.h b/include/linux/platform_data/spi-omap2-mcspi.h
index 0bf9fddb8306..3b400b1919a9 100644
--- a/include/linux/platform_data/spi-omap2-mcspi.h
+++ b/include/linux/platform_data/spi-omap2-mcspi.h
@@ -11,6 +11,7 @@ struct omap2_mcspi_platform_config {
unsigned short num_cs;
unsigned int regs_offset;
unsigned int pin_dir:1;
+ size_t max_xfer_len;
};
struct omap2_mcspi_device_config {