diff options
Diffstat (limited to 'board/ronetix/pm9263/pm9263.c')
| -rw-r--r-- | board/ronetix/pm9263/pm9263.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/board/ronetix/pm9263/pm9263.c b/board/ronetix/pm9263/pm9263.c index d2598a0..8ca71da 100644 --- a/board/ronetix/pm9263/pm9263.c +++ b/board/ronetix/pm9263/pm9263.c @@ -165,6 +165,27 @@ void lcd_disable(void) static int pm9263_lcd_hw_psram_init(void) { volatile uint16_t x; + unsigned long csa; + + /* Enable CS3 3.3v, no pull-ups */ + csa = at91_sys_read(AT91_MATRIX_EBI1CSA); + at91_sys_write(AT91_MATRIX_EBI1CSA, + csa | AT91_MATRIX_EBI1_DBPUC | + AT91_MATRIX_EBI1_VDDIOMSEL_3_3V); + + /* Configure SMC1 CS0 for PSRAM - 16-bit */ + at91_sys_write(AT91_SMC1_SETUP(0), + AT91_SMC_NWESETUP_(0) | AT91_SMC_NCS_WRSETUP_(0) | + AT91_SMC_NRDSETUP_(0) | AT91_SMC_NCS_RDSETUP_(0)); + at91_sys_write(AT91_SMC1_PULSE(0), + AT91_SMC_NWEPULSE_(7) | AT91_SMC_NCS_WRPULSE_(7) | + AT91_SMC_NRDPULSE_(2) | AT91_SMC_NCS_RDPULSE_(7)); + at91_sys_write(AT91_SMC1_CYCLE(0), + AT91_SMC_NWECYCLE_(8) | AT91_SMC_NRDCYCLE_(8)); + at91_sys_write(AT91_SMC1_MODE(0), + AT91_SMC_DBW_16 | + AT91_SMC_PMEN | + AT91_SMC_PS_32); /* setup PB29 as output */ at91_set_gpio_output(PSRAM_CRE_PIN, 1); |