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e4e8276a4f
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>
24 lines
475 B
C
24 lines
475 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _OMAP2_MCSPI_H
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#define _OMAP2_MCSPI_H
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#define OMAP4_MCSPI_REG_OFFSET 0x100
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#define MCSPI_PINDIR_D0_IN_D1_OUT 0
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#define MCSPI_PINDIR_D0_OUT_D1_IN 1
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struct omap2_mcspi_platform_config {
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unsigned short num_cs;
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unsigned int regs_offset;
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unsigned int pin_dir:1;
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size_t max_xfer_len;
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};
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struct omap2_mcspi_device_config {
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unsigned turbo_mode:1;
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/* toggle chip select after every word */
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unsigned cs_per_word:1;
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};
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#endif
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