u-boot/arch/arm/mach-exynos/include/mach/spi.h
Thomas Abraham 77b55e8cfc ARM: exynos: move SoC sources to mach-exynos
Move arch/arm/cpu/armv7/exynos/* to arch/arm/mach-exynos/* to allow
reuse of existing code for ARMv8 based Exynos platforms.

Cc: Minkyu Kang <mk7.kang@samsung.com>
Cc: Albert Aribaud <albert.u.boot@aribaud.net>
Cc: Masahiro Yamada <yamada.m@jp.panasonic.com>
Signed-off-by: Thomas Abraham <thomas.ab@samsung.com>
Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Tested-by: Przemyslaw Marczak <p.marczak@samsung.com>
Acked-by: Przemyslaw Marczak <p.marczak@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2015-08-17 13:06:52 +09:00

76 lines
1.8 KiB
C

/*
* (C) Copyright 2012 SAMSUNG Electronics
* Padmavathi Venna <padma.v@samsung.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __ASM_ARCH_EXYNOS_COMMON_SPI_H_
#define __ASM_ARCH_EXYNOS_COMMON_SPI_H_
#ifndef __ASSEMBLY__
/* SPI peripheral register map; padded to 64KB */
struct exynos_spi {
unsigned int ch_cfg; /* 0x00 */
unsigned char reserved0[4];
unsigned int mode_cfg; /* 0x08 */
unsigned int cs_reg; /* 0x0c */
unsigned char reserved1[4];
unsigned int spi_sts; /* 0x14 */
unsigned int tx_data; /* 0x18 */
unsigned int rx_data; /* 0x1c */
unsigned int pkt_cnt; /* 0x20 */
unsigned char reserved2[4];
unsigned int swap_cfg; /* 0x28 */
unsigned int fb_clk; /* 0x2c */
unsigned char padding[0xffd0];
};
#define EXYNOS_SPI_MAX_FREQ 50000000
#define SPI_TIMEOUT_MS 10
#define SF_READ_DATA_CMD 0x3
/* SPI_CHCFG */
#define SPI_CH_HS_EN (1 << 6)
#define SPI_CH_RST (1 << 5)
#define SPI_SLAVE_MODE (1 << 4)
#define SPI_CH_CPOL_L (1 << 3)
#define SPI_CH_CPHA_B (1 << 2)
#define SPI_RX_CH_ON (1 << 1)
#define SPI_TX_CH_ON (1 << 0)
/* SPI_MODECFG */
#define SPI_MODE_CH_WIDTH_WORD (0x2 << 29)
#define SPI_MODE_BUS_WIDTH_WORD (0x2 << 17)
/* SPI_CSREG */
#define SPI_SLAVE_SIG_INACT (1 << 0)
/* SPI_STS */
#define SPI_ST_TX_DONE (1 << 25)
#define SPI_FIFO_LVL_MASK 0x1ff
#define SPI_TX_LVL_OFFSET 6
#define SPI_RX_LVL_OFFSET 15
/* Feedback Delay */
#define SPI_CLK_BYPASS (0 << 0)
#define SPI_FB_DELAY_90 (1 << 0)
#define SPI_FB_DELAY_180 (2 << 0)
#define SPI_FB_DELAY_270 (3 << 0)
/* Packet Count */
#define SPI_PACKET_CNT_EN (1 << 16)
/* Swap config */
#define SPI_TX_SWAP_EN (1 << 0)
#define SPI_TX_BYTE_SWAP (1 << 2)
#define SPI_TX_HWORD_SWAP (1 << 3)
#define SPI_TX_BYTE_SWAP (1 << 2)
#define SPI_RX_SWAP_EN (1 << 4)
#define SPI_RX_BYTE_SWAP (1 << 6)
#define SPI_RX_HWORD_SWAP (1 << 7)
#endif /* __ASSEMBLY__ */
#endif