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mx35: factorize SDRAM setup in flea3

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Drop local function to setup SDRAM controller
and use the common one for i.MX35.

Signed-off-by: Stefano Babic <sbabic@denx.de>
Signed-off-by: Heiko Schocher <hs@denx.de>
This commit is contained in:
Stefano Babic 2016-10-17 15:51:33 +02:00
parent 72c1015307
commit 146fff347a
1 changed files with 3 additions and 90 deletions
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93
board/CarMediaLab/flea3/flea3.c
View file

@ -30,18 +30,6 @@
#define CCM_CCMR_CONFIG 0x003F4208
#define ESDCTL_DDR2_CONFIG 0x007FFC3F
#define ESDCTL_0x92220000 0x92220000
#define ESDCTL_0xA2220000 0xA2220000
#define ESDCTL_0xB2220000 0xB2220000
#define ESDCTL_0x82228080 0x82228080
#define ESDCTL_DDR2_EMR2 0x04000000
#define ESDCTL_DDR2_EMR3 0x06000000
#define ESDCTL_PRECHARGE 0x00000400
#define ESDCTL_DDR2_EN_DLL 0x02000400
#define ESDCTL_DDR2_RESET_DLL 0x00000333
#define ESDCTL_DDR2_MR 0x00000233
#define ESDCTL_DDR2_OCD_DEFAULT 0x02000780
#define ESDCTL_DELAY_LINE5 0x00F49F00
static inline void dram_wait(unsigned int count)
{
@ -61,83 +49,6 @@ int dram_init(void)
return 0;
}
static void board_setup_sdram_bank(u32 start_address)
{
struct esdc_regs *esdc = (struct esdc_regs *)ESDCTL_BASE_ADDR;
u32 *cfg_reg, *ctl_reg;
u32 val;
switch (start_address) {
case CSD0_BASE_ADDR:
cfg_reg = &esdc->esdcfg0;
ctl_reg = &esdc->esdctl0;
break;
case CSD1_BASE_ADDR:
cfg_reg = &esdc->esdcfg1;
ctl_reg = &esdc->esdctl1;
break;
default:
return;
}
/* Initialize MISC register for DDR2 */
val = ESDC_MISC_RST | ESDC_MISC_MDDR_EN | ESDC_MISC_MDDR_DL_RST |
ESDC_MISC_DDR_EN | ESDC_MISC_DDR2_EN;
writel(val, &esdc->esdmisc);
val &= ~(ESDC_MISC_RST | ESDC_MISC_MDDR_DL_RST);
writel(val, &esdc->esdmisc);
/*
* according to DDR2 specs, wait a while before
* the PRECHARGE_ALL command
*/
dram_wait(0x20000);
/* Load DDR2 config and timing */
writel(ESDCTL_DDR2_CONFIG, cfg_reg);
/* Precharge ALL */
writel(ESDCTL_0x92220000,
ctl_reg);
writel(0xda, start_address + ESDCTL_PRECHARGE);
/* Load mode */
writel(ESDCTL_0xB2220000,
ctl_reg);
writeb(0xda, start_address + ESDCTL_DDR2_EMR2); /* EMRS2 */
writeb(0xda, start_address + ESDCTL_DDR2_EMR3); /* EMRS3 */
writeb(0xda, start_address + ESDCTL_DDR2_EN_DLL); /* Enable DLL */
writeb(0xda, start_address + ESDCTL_DDR2_RESET_DLL); /* Reset DLL */
/* Precharge ALL */
writel(ESDCTL_0x92220000,
ctl_reg);
writel(0xda, start_address + ESDCTL_PRECHARGE);
/* Set mode auto refresh : at least two refresh are required */
writel(ESDCTL_0xA2220000,
ctl_reg);
writel(0xda, start_address);
writel(0xda, start_address);
writel(ESDCTL_0xB2220000,
ctl_reg);
writeb(0xda, start_address + ESDCTL_DDR2_MR);
writeb(0xda, start_address + ESDCTL_DDR2_OCD_DEFAULT);
/* OCD mode exit */
writeb(0xda, start_address + ESDCTL_DDR2_EN_DLL); /* Enable DLL */
/* Set normal mode */
writel(ESDCTL_0x82228080,
ctl_reg);
dram_wait(0x20000);
/* Do not set delay lines, only for MDDR */
}
static void board_setup_sdram(void)
{
struct esdc_regs *esdc = (struct esdc_regs *)ESDCTL_BASE_ADDR;
@ -146,7 +57,9 @@ static void board_setup_sdram(void)
writel(0x2000, &esdc->esdctl0);
writel(0x2000, &esdc->esdctl1);
board_setup_sdram_bank(CSD0_BASE_ADDR);
mx3_setup_sdram_bank(CSD0_BASE_ADDR, ESDCTL_DDR2_CONFIG,
13, 10, 2, 0x8080);
}
static void setup_iomux_uart3(void)