diff options
Diffstat (limited to 'roms/u-boot/arch/arm/mach-exynos/include/mach/spi.h')
-rw-r--r-- | roms/u-boot/arch/arm/mach-exynos/include/mach/spi.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/roms/u-boot/arch/arm/mach-exynos/include/mach/spi.h b/roms/u-boot/arch/arm/mach-exynos/include/mach/spi.h new file mode 100644 index 000000000..43cb26fdb --- /dev/null +++ b/roms/u-boot/arch/arm/mach-exynos/include/mach/spi.h @@ -0,0 +1,75 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * (C) Copyright 2012 SAMSUNG Electronics + * Padmavathi Venna <padma.v@samsung.com> + */ + +#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 |