void __bare_init at91sam926x_lowlevel_board_config(struct at91sam926x_lowlevel_cfg *cfg)
{
/* Disable Watchdog */
cfg->wdt_mr =
AT91_WDT_WDIDLEHLT | AT91_WDT_WDDBGHLT |
AT91_WDT_WDV |
AT91_WDT_WDDIS |
AT91_WDT_WDD;
/* define PDC[31:16] as DATA[31:16] */
cfg->ebi_pio_pdr = 0xFFFF0000;
/* no pull-up for D[31:16] */
cfg->ebi_pio_ppudr = 0xFFFF0000;
/* EBI0_CSA, CS1 SDRAM, CS3 NAND Flash, 3.3V memories */
cfg->ebi_csa =
AT91_MATRIX_DBPUC | AT91_MATRIX_CS1A_SDRAMC;
cfg->smc_cs = 3;
cfg->smc_mode =
AT91_SMC_READMODE | AT91_SMC_WRITEMODE |
AT91_SMC_DBW_8 |
AT91_SMC_EXNWMODE_DISABLE |
AT91_SMC_TDF_(2);
cfg->smc_cycle =
AT91_SMC_NWECYCLE_(5) | AT91_SMC_NRDCYCLE_(5);
cfg->smc_pulse =
AT91_SMC_NWEPULSE_(3) | AT91_SMC_NCS_WRPULSE_(3) |
AT91_SMC_NRDPULSE_(3) | AT91_SMC_NCS_RDPULSE_(3);
cfg->smc_setup =
AT91_SMC_NWESETUP_(1) | AT91_SMC_NCS_WRSETUP_(0) |
AT91_SMC_NRDSETUP_(1) | AT91_SMC_NCS_RDSETUP_(0);
cfg->pmc_mor =
AT91_PMC_MOSCEN |
(255 << 8); /* Main Oscillator Start-up Time */
cfg->pmc_pllar =
AT91_PMC_PLLA_WR_ERRATA | /* Bit 29 must be 1 when prog */
AT91_PMC_OUT |
((MASTER_PLL_MUL - 1) << 16) | (MASTER_PLL_DIV);
/* PCK/2 = MCK Master Clock from PLLA */
cfg->pmc_mckr1 =
AT91_PMC_CSS_SLOW |
AT91_PMC_PRES_1 |
AT91SAM9_PMC_MDIV_2 |
AT91_PMC_PDIV_1;
/* PCK/2 = MCK Master Clock from PLLA */
cfg->pmc_mckr2 =
AT91_PMC_CSS_PLLA |
AT91_PMC_PRES_1 |
AT91SAM9_PMC_MDIV_2 |
AT91_PMC_PDIV_1;
/* SDRAM */
/* SDRAMC_TR - Refresh Timer register */
cfg->sdrc_tr1 = 0x13C;
/* SDRAMC_CR - Configuration register*/
cfg->sdrc_cr =
AT91_SDRAMC_NC_9 |
AT91_SDRAMC_NR_13 |
AT91_SDRAMC_NB_4 |
AT91_SDRAMC_CAS_2 |
AT91_SDRAMC_DBW_32 |
(2 << 8) | /* Write Recovery Delay */
(7 << 12) | /* Row Cycle Delay */
(2 << 16) | /* Row Precharge Delay */
(2 << 20) | /* Row to Column Delay */
(5 << 24) | /* Active to Precharge Delay */
(8 << 28); /* Exit Self Refresh to Active Delay */
/* Memory Device Register -> SDRAM */
cfg->sdrc_mdr = AT91_SDRAMC_MD_SDRAM;
/* SDRAM_TR */
cfg->sdrc_tr2 = (MASTER_CLOCK * 7);
/* user reset enable */
cfg->rstc_rmr =
AT91_RSTC_KEY |
AT91_RSTC_PROCRST |
AT91_RSTC_RSTTYP_WAKEUP |
AT91_RSTC_RSTTYP_WATCHDOG;
}
/*
* initialize the som-9g20 for apcc.
*/
static void apcc_init(void)
{
unsigned int cnt = 10000;
{ /* initialize PCK1 - this is output to the FPGA as clock reference.
* select PLLA as clock source (18.432 * 42) and div by 32
* 24.192 mHz.
*/
at91_sys_write(AT91_PMC_PCKR(1), AT91_PMC_CSS_PLLA | AT91_PMC_PRES_32);
/* Enable PCK1 output */
at91_sys_write(AT91_PMC_SCER, AT91_PMC_PCK1);
/* Wait for PCK1 to come ready or timeout */
while (cnt-- > 0) {
volatile unsigned long scsr = at91_sys_read(AT91_PMC_SCSR);
if ((scsr & AT91_PMC_PCK1RDY) != 0) {
break;
}
}
/* configure PB31 to be used as PCK1 */
at91_set_A_periph(AT91_PIN_PB31, 0);
}
{ /* initialize sensys fpga */
/*
* Configure CS0 (Chip Select 0) for FPGA (SMC @ FFFFEC00)
*
* SETUP - 0x1F3F1F3F
* PULSE - 0x403F403F
* CYCLE - 0x013E013E
* MODE - 0x000F0003
*/
at91_sys_write(AT91_SMC_SETUP(0),
AT91_SMC_NWESETUP_(4) | AT91_SMC_NCS_WRSETUP_(4) |
AT91_SMC_NRDSETUP_(4) | AT91_SMC_NCS_RDSETUP_(4));
at91_sys_write(AT91_SMC_PULSE(0),
AT91_SMC_NWEPULSE_(20) | AT91_SMC_NCS_WRPULSE_(20) |
AT91_SMC_NRDPULSE_(22) | AT91_SMC_NCS_RDPULSE_(22));
at91_sys_write(AT91_SMC_CYCLE(0),
AT91_SMC_NWECYCLE_(35) | AT91_SMC_NRDCYCLE_(29));
at91_sys_write(AT91_SMC_MODE(0),
AT91_SMC_READMODE | AT91_SMC_WRITEMODE |
AT91_SMC_EXNWMODE_DISABLE |
AT91_SMC_DBW_8 |
AT91_SMC_TDF_(1));
}
{
/* to conserve power, disable the AtoD of phy.
*/
at91_set_gpio_output(AT91_PIN_PA22, 1);
}
#ifdef CONFIG_HW_WATCHDOG
{ /* set up watchdog port */
at91_set_gpio_output(AT91_PIN_PB18, 1);
WATCHDOG_RESET();
}
#endif
}
static void __init ek_add_device_dm9000(void)
{
/*
* Configure Chip-Select 2 on SMC for the DM9000.
* Note: These timings were calculated for MASTER_CLOCK = 100000000
* according to the DM9000 timings.
*/
at91_sys_write(AT91_SMC_SETUP(2), AT91_SMC_NWESETUP_(2) | AT91_SMC_NCS_WRSETUP_(0) | AT91_SMC_NRDSETUP_(2) | AT91_SMC_NCS_RDSETUP_(0));
at91_sys_write(AT91_SMC_PULSE(2), AT91_SMC_NWEPULSE_(4) | AT91_SMC_NCS_WRPULSE_(8) | AT91_SMC_NRDPULSE_(4) | AT91_SMC_NCS_RDPULSE_(8));
at91_sys_write(AT91_SMC_CYCLE(2), AT91_SMC_NWECYCLE_(16) | AT91_SMC_NRDCYCLE_(16));
at91_sys_write(AT91_SMC_MODE(2), AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_BAT_WRITE | AT91_SMC_DBW_16 | AT91_SMC_TDF_(1));
/* Configure Reset signal as output */
at91_set_gpio_output(AT91_PIN_PC10, 0);
/* Configure Interrupt pin as input, no pull-up */
at91_set_gpio_input(AT91_PIN_PC11, 0);
platform_device_register(&at91sam9261_dm9000_device);
}
void __init at91_add_device_nand(struct at91_nand_data *data)
{
unsigned long csa, mode;
if (!data)
return;
csa = at91_sys_read(AT91_MATRIX_EBICSA);
at91_sys_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_CS3A_SMC_SMARTMEDIA);
if (cpu_is_at91sam9260()) {
/* Timing for sam9260 */
/* set the bus interface characteristics */
at91_sys_write(AT91_SMC_SETUP(3), AT91_SMC_NWESETUP_(1) | AT91_SMC_NCS_WRSETUP_(0)
| AT91_SMC_NRDSETUP_(1) | AT91_SMC_NCS_RDSETUP_(0));
at91_sys_write(AT91_SMC_PULSE(3), AT91_SMC_NWEPULSE_(3) | AT91_SMC_NCS_WRPULSE_(3)
| AT91_SMC_NRDPULSE_(3) | AT91_SMC_NCS_RDPULSE_(3));
at91_sys_write(AT91_SMC_CYCLE(3), AT91_SMC_NWECYCLE_(5) | AT91_SMC_NRDCYCLE_(5));
if (data->bus_width_16)
mode = AT91_SMC_DBW_16;
else
mode = AT91_SMC_DBW_8;
at91_sys_write(AT91_SMC_MODE(3), mode | AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_TDF_(2));
}
if (cpu_is_at91sam9g20()) {
/* Timing for sam9g20 */
/* set the bus interface characteristics */
at91_sys_write(AT91_SMC_SETUP(3), AT91_SMC_NWESETUP_(2) | AT91_SMC_NCS_WRSETUP_(0)
| AT91_SMC_NRDSETUP_(2) | AT91_SMC_NCS_RDSETUP_(0));
at91_sys_write(AT91_SMC_PULSE(3), AT91_SMC_NWEPULSE_(4) | AT91_SMC_NCS_WRPULSE_(4)
| AT91_SMC_NRDPULSE_(4) | AT91_SMC_NCS_RDPULSE_(4));
at91_sys_write(AT91_SMC_CYCLE(3), AT91_SMC_NWECYCLE_(7) | AT91_SMC_NRDCYCLE_(7));
if (data->bus_width_16)
mode = AT91_SMC_DBW_16;
else
mode = AT91_SMC_DBW_8;
at91_sys_write(AT91_SMC_MODE(3), mode | AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_TDF_(3));
}
/* enable pin */
if (data->enable_pin)
at91_set_gpio_output(data->enable_pin, 1);
/* ready/busy pin */
if (data->rdy_pin)
at91_set_gpio_input(data->rdy_pin, 1);
/* card detect pin */
if (data->det_pin)
at91_set_gpio_input(data->det_pin, 1);
nand_data = *data;
platform_device_register(&at91sam9260_nand_device);
}
