From 9ca8bfea80f38e3b423e339499c861ddc24b830c Mon Sep 17 00:00:00 2001 From: Lokesh Vutla Date: Mon, 4 Feb 2013 04:21:59 +0000 Subject: ARM: OMAP4+: emif: Detect SDRAM from SDRAM config register 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 Signed-off-by: Lokesh Vutla Reviewed-by: Tom Rini --- arch/arm/include/asm/emif.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'arch/arm/include') diff --git a/arch/arm/include/asm/emif.h b/arch/arm/include/asm/emif.h index ed251ec8ec..0824a80d06 100644 --- a/arch/arm/include/asm/emif.h +++ b/arch/arm/include/asm/emif.h @@ -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 -- cgit v1.2.3