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mx6q: Add support for ECSPI through mxc_spi driver

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Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
Acked-by: Dirk Behme <dirk.behme@de.bosch.com>
Acked-by: Stefano Babic <sbabic@denx.de>
Acked-by: Jason Liu <jason.hui@linaro.org>
This commit is contained in:
Eric Nelson 2012-01-31 07:52:04 +00:00 committed by Albert ARIBAUD
parent 08c61a589b
commit d5c37c9cc4
1 changed files with 44 additions and 0 deletions
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44
arch/arm/include/asm/arch-mx6/imx-regs.h
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@ -194,6 +194,50 @@ struct src {
u32 gpr10;
};
/* ECSPI registers */
struct cspi_regs {
u32 rxdata;
u32 txdata;
u32 ctrl;
u32 cfg;
u32 intr;
u32 dma;
u32 stat;
u32 period;
};
/*
* CSPI register definitions
*/
#define MXC_ECSPI
#define MXC_CSPICTRL_EN (1 << 0)
#define MXC_CSPICTRL_MODE (1 << 1)
#define MXC_CSPICTRL_XCH (1 << 2)
#define MXC_CSPICTRL_CHIPSELECT(x) (((x) & 0x3) << 12)
#define MXC_CSPICTRL_BITCOUNT(x) (((x) & 0xfff) << 20)
#define MXC_CSPICTRL_PREDIV(x) (((x) & 0xF) << 12)
#define MXC_CSPICTRL_POSTDIV(x) (((x) & 0xF) << 8)
#define MXC_CSPICTRL_SELCHAN(x) (((x) & 0x3) << 18)
#define MXC_CSPICTRL_MAXBITS 0xfff
#define MXC_CSPICTRL_TC (1 << 7)
#define MXC_CSPICTRL_RXOVF (1 << 6)
#define MXC_CSPIPERIOD_32KHZ (1 << 15)
#define MAX_SPI_BYTES 32
/* Bit position inside CTRL register to be associated with SS */
#define MXC_CSPICTRL_CHAN 18
/* Bit position inside CON register to be associated with SS */
#define MXC_CSPICON_POL 4
#define MXC_CSPICON_PHA 0
#define MXC_CSPICON_SSPOL 12
#define MXC_SPI_BASE_ADDRESSES \
ECSPI1_BASE_ADDR, \
ECSPI2_BASE_ADDR, \
ECSPI3_BASE_ADDR, \
ECSPI4_BASE_ADDR, \
ECSPI5_BASE_ADDR
struct iim_regs {
u32 ctrl;
u32 ctrl_set;