mirror of
https://github.com/zephyrproject-rtos/zephyr
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256c5c4e17
This commit adds LiteX SPI drivers and its bindings. Signed-off-by: Daniel Craviee <dcraviee@internships.antmicro.com> Signed-off-by: Mateusz Holenko <mholenko@antmicro.com>
44 lines
925 B
C
44 lines
925 B
C
/*
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* Copyright (c) 2019 Antmicro <www.antmicro.com>
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef _SPI_LITESPI__H
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#define _SPI_LITESPI__H
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#include "spi_context.h"
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#include <sys/sys_io.h>
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#include <device.h>
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#include <drivers/spi.h>
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#define SPI_BASE_ADDR DT_INST_0_LITEX_SPI_BASE_ADDRESS
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#define SPI_CONTROL_REG SPI_BASE_ADDR
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#define SPI_STATUS_REG (SPI_BASE_ADDR + 0x08)
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#define SPI_MOSI_DATA_REG (SPI_BASE_ADDR + 0x0c)
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#define SPI_MISO_DATA_REG (SPI_BASE_ADDR + 0x10)
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#define SPI_CS_REG (SPI_BASE_ADDR + 0x14)
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#define SPI_LOOPBACK_REG (SPI_BASE_ADDR + 0x18)
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#define POSITION_WORD_SIZE 8
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#define SPI_MAX_CS_SIZE 0x100
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#define SPI_WORD_SIZE 8
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#define SPI_ENABLE 0x1
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#define SPI_DATA(dev) ((struct spi_litespi_data *) ((dev)->driver_data))
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/* Structure Declarations */
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struct spi_litespi_data {
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struct spi_context ctx;
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};
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struct spi_litespi_cfg {
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u32_t base;
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u32_t f_sys;
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};
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#endif /* _SPI_LITESPI__H */
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