diff options
Diffstat (limited to 'board/ads5121/ads5121.c')
| -rw-r--r-- | board/ads5121/ads5121.c | 54 |
1 files changed, 19 insertions, 35 deletions
diff --git a/board/ads5121/ads5121.c b/board/ads5121/ads5121.c index ef66663..de59991 100644 --- a/board/ads5121/ads5121.c +++ b/board/ads5121/ads5121.c @@ -26,7 +26,9 @@ #include <asm/bitops.h> #include <command.h> #include <fdt_support.h> - +#ifdef CONFIG_MISC_INIT_R +#include <i2c.h> +#endif /* Clocks in use */ #define SCCR1_CLOCKS_EN (CLOCK_SCCR1_CFG_EN | \ CLOCK_SCCR1_LPC_EN | \ @@ -45,28 +47,12 @@ #define CSAW_START(start) ((start) & 0xFFFF0000) #define CSAW_STOP(start, size) (((start) + (size) - 1) >> 16) -#define MPC5121_IOCTL_PSC6_0 (0x284/4) -#define MPC5121_IO_DIU_START (0x288/4) -#define MPC5121_IO_DIU_END (0x2fc/4) - -/* Functional pin muxing */ -#define MPC5121_IO_FUNC1 (0 << 7) -#define MPC5121_IO_FUNC2 (1 << 7) -#define MPC5121_IO_FUNC3 (2 << 7) -#define MPC5121_IO_FUNC4 (3 << 7) -#define MPC5121_IO_ST (1 << 2) -#define MPC5121_IO_DS_1 (0) -#define MPC5121_IO_DS_2 (1) -#define MPC5121_IO_DS_3 (2) -#define MPC5121_IO_DS_4 (3) - long int fixed_sdram(void); int board_early_init_f (void) { volatile immap_t *im = (immap_t *) CFG_IMMR; u32 lpcaw, tmp32; - volatile ioctrl512x_t *ioctl = &(im->io_ctrl); int i; /* @@ -91,24 +77,27 @@ int board_early_init_f (void) * Without this the flash identification routine fails, as it needs to issue * write commands in order to establish the device ID. */ - *((volatile u8 *)(CFG_CPLD_BASE + 0x08)) = 0xC1; +#ifdef CONFIG_ADS5121_REV2 + *((volatile u8 *)(CFG_CPLD_BASE + 0x08)) = 0xC1; +#else + if (*((u8 *)(CFG_CPLD_BASE + 0x08)) & 0x04) { + *((volatile u8 *)(CFG_CPLD_BASE + 0x08)) = 0xC1; + } else { + /* running from Backup flash */ + *((volatile u8 *)(CFG_CPLD_BASE + 0x08)) = 0x32; + } +#endif + /* + * Configure Flash Speed + */ + *((volatile u32 *)(CFG_IMMR + LPC_OFFSET + CS0_CONFIG)) = CFG_CS0_CFG; /* * Enable clocks */ im->clk.sccr[0] = SCCR1_CLOCKS_EN; im->clk.sccr[1] = SCCR2_CLOCKS_EN; - /* Configure DIU clock pin */ - tmp32 = ioctl->regs[MPC5121_IOCTL_PSC6_0]; - tmp32 &= ~0x1ff; - tmp32 |= MPC5121_IO_FUNC3 | MPC5121_IO_DS_4; - ioctl->regs[MPC5121_IOCTL_PSC6_0] = tmp32; - - /* Initialize IO pins (pin mux) for DIU function */ - for (i = MPC5121_IO_DIU_START; i < MPC5121_IO_DIU_END; i++) - ioctl->regs[i] |= (MPC5121_IO_FUNC3 | MPC5121_IO_DS_4); - return 0; } @@ -250,17 +239,12 @@ int checkboard (void) { ushort brd_rev = *(vu_short *) (CFG_CPLD_BASE + 0x00); uchar cpld_rev = *(vu_char *) (CFG_CPLD_BASE + 0x02); - volatile immap_t *im = (immap_t *) CFG_IMMR; - volatile unsigned long *reg; - int i; printf ("Board: ADS5121 rev. 0x%04x (CPLD rev. 0x%02x)\n", brd_rev, cpld_rev); + /* initialize function mux & slew rate IO inter alia on IO Pins */ + iopin_initialize(); - /* change the slew rate on all pata pins to max */ - reg = (unsigned long *) &(im->io_ctrl.regs[PATA_CE1_IDX]); - for (i = 0; i < 9; i++) - reg[i] |= 0x00000003; return 0; } |