diff options
| author | Richard Retanubun <RichardRetanubun@RuggedCom.com> | 2011-03-24 08:58:11 +0000 |
|---|---|---|
| committer | jason <jason@jason-ThinkPad-T61.(none)> | 2012-09-20 20:39:27 +0800 |
| commit | 59d0612252a0ffcb878a1891249d32a306a24fa6 (patch) | |
| tree | eef4fe1f59521cf6a2096434f0c600b1e82fc138 /arch/m68k | |
| parent | 198cafbf2cab9851ee5dd8d24d268d0ccc0fe3bd (diff) | |
ColdFire: Queued SPI driver
This patch adds a driver for Freescale Colfire Queued SPI bus.
Coded to work with 8 bits per transfer to use with SPI flash.
CPOL, CPHA, and CS_ACTIVE_HIGH can be configured.
Tested with MCF5270 which have 4 chip selects.
Activate by #define CONFIG_CF_QSPI in board config.
Signed-off-by: Richard Retanubun <richardretanubun@ruggedcom.com>
Diffstat (limited to 'arch/m68k')
| -rw-r--r-- | arch/m68k/cpu/mcf52x2/cpu_init.c | 15 | ||||
| -rw-r--r-- | arch/m68k/include/asm/coldfire/qspi.h | 2 | ||||
| -rw-r--r-- | arch/m68k/include/asm/m5271.h | 26 |
3 files changed, 41 insertions, 2 deletions
diff --git a/arch/m68k/cpu/mcf52x2/cpu_init.c b/arch/m68k/cpu/mcf52x2/cpu_init.c index a221420762d..5d0e9f06f37 100644 --- a/arch/m68k/cpu/mcf52x2/cpu_init.c +++ b/arch/m68k/cpu/mcf52x2/cpu_init.c @@ -333,7 +333,20 @@ int fecpin_setclear(struct eth_device *dev, int setclear) return 0; } #endif /* CONFIG_CMD_NET */ -#endif + +#if defined(CONFIG_CF_QSPI) + +/* Configure PIOs for SIN, SOUT, and SCK */ +void cfspi_port_conf(void) +{ + mbar_writeByte(MCF_GPIO_PAR_QSPI, + MCF_GPIO_PAR_QSPI_SIN_SIN | + MCF_GPIO_PAR_QSPI_SOUT_SOUT | + MCF_GPIO_PAR_QSPI_SCK_SCK); +} +#endif /* CONFIG_CF_QSPI */ + +#endif /* CONFIG_M5271 */ #if defined(CONFIG_M5272) /* diff --git a/arch/m68k/include/asm/coldfire/qspi.h b/arch/m68k/include/asm/coldfire/qspi.h index 8bcd2e4db1a..9fd98f6c044 100644 --- a/arch/m68k/include/asm/coldfire/qspi.h +++ b/arch/m68k/include/asm/coldfire/qspi.h @@ -98,7 +98,7 @@ typedef struct qspi_ctrl { #define QSPI_QAR_RECV (0x0010) #define QSPI_QAR_CMD (0x0020) -/* DR */ +/* DR with RAM command word definitions */ #define QSPI_QDR_CONT (0x8000) #define QSPI_QDR_BITSE (0x4000) #define QSPI_QDR_DT (0x2000) diff --git a/arch/m68k/include/asm/m5271.h b/arch/m68k/include/asm/m5271.h index d25261bcd1b..b2bc05111d8 100644 --- a/arch/m68k/include/asm/m5271.h +++ b/arch/m68k/include/asm/m5271.h @@ -171,6 +171,32 @@ #define MCF_GPIO_PAR_UART_U1RXD_UART1 0x0C00 #define MCF_GPIO_PAR_UART_U1TXD_UART1 0x0300 +/* Bit definitions and macros for PAR_QSPI */ +#define MCF_GPIO_PAR_QSPI_PCS1_UNMASK 0x3F +#define MCF_GPIO_PAR_QSPI_PCS1_PCS1 0xC0 +#define MCF_GPIO_PAR_QSPI_PCS1_SDRAM_SCKE 0x80 +#define MCF_GPIO_PAR_QSPI_PCS1_GPIO 0x00 +#define MCF_GPIO_PAR_QSPI_PCS0_UNMASK 0xDF +#define MCF_GPIO_PAR_QSPI_PCS0_PCS0 0x20 +#define MCF_GPIO_PAR_QSPI_PCS0_GPIO 0x00 +#define MCF_GPIO_PAR_QSPI_SIN_UNMASK 0xE7 +#define MCF_GPIO_PAR_QSPI_SIN_SIN 0x18 +#define MCF_GPIO_PAR_QSPI_SIN_I2C_SDA 0x10 +#define MCF_GPIO_PAR_QSPI_SIN_GPIO 0x00 +#define MCF_GPIO_PAR_QSPI_SOUT_UNMASK 0xFB +#define MCF_GPIO_PAR_QSPI_SOUT_SOUT 0x04 +#define MCF_GPIO_PAR_QSPI_SOUT_GPIO 0x00 +#define MCF_GPIO_PAR_QSPI_SCK_UNMASK 0xFC +#define MCF_GPIO_PAR_QSPI_SCK_SCK 0x03 +#define MCF_GPIO_PAR_QSPI_SCK_I2C_SCL 0x02 +#define MCF_GPIO_PAR_QSPI_SCK_GPIO 0x00 + +/* Bit definitions and macros for PAR_TIMER for QSPI */ +#define MCF_GPIO_PAR_TIMER_T3IN_UNMASK 0x3FFF +#define MCF_GPIO_PAR_TIMER_T3IN_QSPI_PCS2 0x4000 +#define MCF_GPIO_PAR_TIMER_T3OUT_UNMASK 0xFF3F +#define MCF_GPIO_PAR_TIMER_T3OUT_QSPI_PCS3 0x0040 + #define MCF_GPIO_PAR_SDRAM_PAR_CSSDCS(x) (((x)&0x03)<<6) #define MCF_SDRAMC_DCR 0x000040 |