/* timing set */
static int nxp_nand_timing_set(struct mtd_info *mtd)
{
struct nand_chip *chip = mtd->priv;
uint32_t ret, mode;
ret = onfi_get_async_timing_mode(chip);
if (ret == ONFI_TIMING_MODE_UNKNOWN)
{
NX_MCUS_SetNANDBUSConfig
(
0, /* NF */
CFG_SYS_NAND_TACS, // tACS ( 0 ~ 3 )
CFG_SYS_NAND_TCAH, // tCAH ( 0 ~ 3 )
CFG_SYS_NAND_TCOS, // tCOS ( 0 ~ 3 )
CFG_SYS_NAND_TCOH, // tCOH ( 0 ~ 3 )
CFG_SYS_NAND_TACC // tACC ( 1 ~ 16)
);
return 0;
}
mode = fls(ret) - 1;
TM_DBGOUT("ONFI TIMING MODE (%d) \n", mode);
nand_onfi_timing_set (mtd, mode);
return 0;
}
static int nand_onfi_timing_set(struct mtd_info *mtd, uint32_t mode)
{
struct clk *clk;
uint32_t clkhz;
struct nand_timings tmgs;
int ret;
clk = clk_get (NULL, CORECLK_NAME_BCLK), clkhz = clk_get_rate(clk), clk_put(clk);
TM_DBGOUT(" BCLK: %u HZ\n", clkhz);
// setting - nand flash
// setting - nand controller timming
NX_MCUS_GetNANDBUSConfig
(
0,
&tmgs.tACS,
&tmgs.tCAH,
&tmgs.tCOS,
&tmgs.tOCH,
&tmgs.tACC
);
TM_DBGOUT("[BEFORE] tACS: %u, tCAH: %u, tCOS: %u, tOCH: %u, tACC: %u\n",
tmgs.tACS, tmgs.tCAH, tmgs.tCOS, tmgs.tOCH, tmgs.tACC);
ret = nand_calc_timing_mode (mode, clkhz, &tmgs);
if (ret < 0)
return -1;
NX_MCUS_SetNANDBUSConfig
(
0,
tmgs.tACS,
tmgs.tCAH,
tmgs.tCOS,
tmgs.tOCH,
tmgs.tACC
);
NX_MCUS_GetNANDBUSConfig
(
0,
&tmgs.tACS,
&tmgs.tCAH,
&tmgs.tCOS,
&tmgs.tOCH,
&tmgs.tACC
);
TM_DBGOUT("[AFTER] tACS: %u, tCAH: %u, tCOS: %u, tOCH: %u, tACC: %u\n",
tmgs.tACS, tmgs.tCAH, tmgs.tCOS, tmgs.tOCH, tmgs.tACC);
return 0;
}
static void cpu_bus_init(void)
{
/* MCUS for Static Memory. */
NX_MCUS_Initialize();
NX_MCUS_SetBaseAddress((void*)IO_ADDRESS(NX_MCUS_GetPhysicalAddress()));
NX_MCUS_OpenModule();
/*
* NAND Bus config
*/
#if 0
NX_MCUS_SetNANDBUSConfig
(
0, /* NF */
CFG_SYS_NAND_TACS, // tACS ( 0 ~ 3 )
CFG_SYS_NAND_TCAH, // tCAH ( 0 ~ 3 )
CFG_SYS_NAND_TCOS, // tCOS ( 0 ~ 3 )
CFG_SYS_NAND_TCOH, // tCOH ( 0 ~ 3 )
CFG_SYS_NAND_TACC // tACC ( 1 ~ 16)
);
#endif
/*
* MCU-Static config: Static Bus #0 ~ #1
*/
#define STATIC_BUS_CONFIGUTATION( _n_ ) \
NX_MCUS_SetStaticBUSConfig \
( \
NX_MCUS_SBUSID_STATIC ## _n_, \
CFG_SYS_STATIC ## _n_ ## _BW, \
CFG_SYS_STATIC ## _n_ ## _TACS, \
CFG_SYS_STATIC ## _n_ ## _TCAH, \
CFG_SYS_STATIC ## _n_ ## _TCOS, \
CFG_SYS_STATIC ## _n_ ## _TCOH, \
CFG_SYS_STATIC ## _n_ ## _TACC, \
CFG_SYS_STATIC ## _n_ ## _TSACC, \
(NX_MCUS_WAITMODE ) CFG_SYS_STATIC ## _n_ ## _WAITMODE, \
(NX_MCUS_BURSTMODE) CFG_SYS_STATIC ## _n_ ## _RBURST, \
(NX_MCUS_BURSTMODE) CFG_SYS_STATIC ## _n_ ## _WBURST \
);
STATIC_BUS_CONFIGUTATION( 0);
STATIC_BUS_CONFIGUTATION( 1);
}
