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| author | Tom Rini <trini@ti.com> | 2011-11-18 12:48:04 +0000 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2011-12-06 23:59:38 +0100 |
| commit | 1be1433b834aaf7aef7c92275f92d4729f6bd62e (patch) | |
| tree | 6f21533bfe62196777c60c117daf2dd4ed75f342 | |
| parent | 14ca3dee80718b5f8fd06e39e78a4e7757826bbf (diff) | |
| download | u-boot-imx-1be1433b834aaf7aef7c92275f92d4729f6bd62e.zip u-boot-imx-1be1433b834aaf7aef7c92275f92d4729f6bd62e.tar.gz u-boot-imx-1be1433b834aaf7aef7c92275f92d4729f6bd62e.tar.bz2 | |
OMAP3: Add optimal SDRC autorefresh control values
This adds the optimal SDRC autorefresh control register values for
100Mhz, 133MHz, 165MHz and 200MHz clocks. We switch to using this
to provide the default 165MHz value.
Signed-off-by: Tom Rini <trini@ti.com>
| -rw-r--r-- | arch/arm/include/asm/arch-omap3/mem.h | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/arch/arm/include/asm/arch-omap3/mem.h b/arch/arm/include/asm/arch-omap3/mem.h index 12ff3b0..912c737 100644 --- a/arch/arm/include/asm/arch-omap3/mem.h +++ b/arch/arm/include/asm/arch-omap3/mem.h @@ -49,6 +49,16 @@ enum { #define SDRC_SHARING 0x00000100 #define SDRC_MR_0_SDR 0x00000031 +/* + * SDRC autorefresh control values. This register consists of autorefresh + * enable at bits 0:1 and an autorefresh counter value in bits 8:23. The + * counter is a result of ( tREFI / tCK ) - 50. + */ +#define SDP_3430_SDRC_RFR_CTRL_100MHz 0x0002da01 +#define SDP_3430_SDRC_RFR_CTRL_133MHz 0x0003de01 /* 7.8us/7.5ns - 50=0x3de */ +#define SDP_3430_SDRC_RFR_CTRL_165MHz 0x0004e201 /* 7.8us/6ns - 50=0x4e2 */ +#define SDP_3430_SDRC_RFR_CTRL_200MHz 0x0005e601 /* 7.8us/5ns - 50=0x5e6 */ + #define DLL_OFFSET 0 #define DLL_WRITEDDRCLKX2DIS 1 #define DLL_ENADLL 1 @@ -168,10 +178,6 @@ enum { #define MICRON_RASWIDTH 0x2 #define MICRON_V_MCFG(size) MCFG((size), MICRON_RASWIDTH) -#define MICRON_ARCV 2030 -#define MICRON_ARE 0x1 -#define MICRON_V_RFR_CTRL ((MICRON_ARCV << 8) | (MICRON_ARE)) - #define MICRON_BL 0x2 #define MICRON_SIL 0x0 #define MICRON_CASL 0x3 @@ -214,7 +220,7 @@ enum { #define V_ACTIMA_165 MICRON_V_ACTIMA_165 #define V_ACTIMB_165 MICRON_V_ACTIMB_165 #define V_MCFG MICRON_V_MCFG(PHYS_SDRAM_1_SIZE) -#define V_RFR_CTRL MICRON_V_RFR_CTRL +#define V_RFR_CTRL SDP_3430_SDRC_RFR_CTRL_165MHz #define V_MR MICRON_V_MR #endif |