/* * NVIDIA Tegra20 SPI-FLASH controller * * Copyright 2010-2012 NVIDIA Corporation * * This software may be used and distributed according to the * terms of the GNU Public License, Version 2, incorporated * herein by reference. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * Version 2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */ #ifndef _TEGRA_SPI_H_ #define _TEGRA_SPI_H_ #include struct spi_tegra { u32 command; /* SPI_COMMAND_0 register */ u32 status; /* SPI_STATUS_0 register */ u32 rx_cmp; /* SPI_RX_CMP_0 register */ u32 dma_ctl; /* SPI_DMA_CTL_0 register */ u32 tx_fifo; /* SPI_TX_FIFO_0 register */ u32 rsvd[3]; /* offsets 0x14 to 0x1F reserved */ u32 rx_fifo; /* SPI_RX_FIFO_0 register */ }; #define SPI_CMD_GO (1 << 30) #define SPI_CMD_ACTIVE_SCLK_SHIFT 26 #define SPI_CMD_ACTIVE_SCLK_MASK (3 << SPI_CMD_ACTIVE_SCLK_SHIFT) #define SPI_CMD_CK_SDA (1 << 21) #define SPI_CMD_ACTIVE_SDA_SHIFT 18 #define SPI_CMD_ACTIVE_SDA_MASK (3 << SPI_CMD_ACTIVE_SDA_SHIFT) #define SPI_CMD_CS_POL (1 << 16) #define SPI_CMD_TXEN (1 << 15) #define SPI_CMD_RXEN (1 << 14) #define SPI_CMD_CS_VAL (1 << 13) #define SPI_CMD_CS_SOFT (1 << 12) #define SPI_CMD_CS_DELAY (1 << 9) #define SPI_CMD_CS3_EN (1 << 8) #define SPI_CMD_CS2_EN (1 << 7) #define SPI_CMD_CS1_EN (1 << 6) #define SPI_CMD_CS0_EN (1 << 5) #define SPI_CMD_BIT_LENGTH (1 << 4) #define SPI_CMD_BIT_LENGTH_MASK 0x0000001F #define SPI_STAT_BSY (1 << 31) #define SPI_STAT_RDY (1 << 30) #define SPI_STAT_RXF_FLUSH (1 << 29) #define SPI_STAT_TXF_FLUSH (1 << 28) #define SPI_STAT_RXF_UNR (1 << 27) #define SPI_STAT_TXF_OVF (1 << 26) #define SPI_STAT_RXF_EMPTY (1 << 25) #define SPI_STAT_RXF_FULL (1 << 24) #define SPI_STAT_TXF_EMPTY (1 << 23) #define SPI_STAT_TXF_FULL (1 << 22) #define SPI_STAT_SEL_TXRX_N (1 << 16) #define SPI_STAT_CUR_BLKCNT (1 << 15) #define SPI_TIMEOUT 1000 #define TEGRA20_SPI_MAX_FREQ 52000000 #endif /* _TEGRA_SPI_H_ */