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fsl-ddr: add the macro for Rtt_Nom definition

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add the macro definition for Rtt_Nom termination value for DDR3

Signed-off-by: Dave Liu <daveliu@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Dave Liu 2010-03-05 12:23:00 +08:00 committed by Kumar Gala
parent 1231c498e0
commit f8d05e5e58
1 changed files with 7 additions and 1 deletions
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8
arch/powerpc/include/asm/fsl_ddr_sdram.h
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@ -1,5 +1,5 @@
/*
* Copyright 2008-2009 Freescale Semiconductor, Inc.
* Copyright 2008-2010 Freescale Semiconductor, Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
@ -24,6 +24,12 @@
#define DDR_OTF 6 /* on-the-fly BC4 and BL8 */
#define DDR_BL8 8 /* burst length 8 */
#define DDR3_RTT_60_OHM 1 /* RTT_Nom = RZQ/4 */
#define DDR3_RTT_120_OHM 2 /* RTT_Nom = RZQ/2 */
#define DDR3_RTT_40_OHM 3 /* RTT_Nom = RZQ/6 */
#define DDR3_RTT_20_OHM 4 /* RTT_Nom = RZQ/12 */
#define DDR3_RTT_30_OHM 5 /* RTT_Nom = RZQ/8 */
#if defined(CONFIG_FSL_DDR1)
#define FSL_DDR_MIN_TCKE_PULSE_WIDTH_DDR (1)
typedef ddr1_spd_eeprom_t generic_spd_eeprom_t;