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ARM: OMAP4+: emif: Detect SDRAM from SDRAM config register

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Now SDRAM initialization is done on the basis of omap revision.
Instead this should be done on basis of SDRAM type read from
EMIF_SDRAM_CONFIG register. This will be helpful to avoid
unnessecary cpu checks for new boards

Signed-off-by: R Sricharan <r.sricharan@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Tom Rini <trini@ti.com>
This commit is contained in:
Lokesh Vutla
2013-02-04 04:21:59 +00:00
committed by Tom Rini
parent 60e6bdcc94
commit 9ca8bfea80
5 changed files with 28 additions and 7 deletions
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6
arch/arm/include/asm/emif.h
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@@ -1027,6 +1027,11 @@ extern const u32 ddr3_ext_phy_ctrl_const_base[EMIF_EXT_PHY_CTRL_CONST_REG];
#define MR8_IO_WIDTH_SHIFT 0x6
#define MR8_IO_WIDTH_MASK (0x3 << 0x6)
/* SDRAM TYPE */
#define EMIF_SDRAM_TYPE_DDR2 0x2
#define EMIF_SDRAM_TYPE_DDR3 0x3
#define EMIF_SDRAM_TYPE_LPDDR2 0x4
struct lpddr2_addressing {
u8 num_banks;
u8 t_REFI_us_x10;
@@ -1156,4 +1161,5 @@ extern u32 *const emif_sizes;
#endif
void config_data_eye_leveling_samples(u32 emif_base);
u32 emif_sdram_type(void);
#endif