1/* 2 * linux/arch/arm/mach-omap2/memory.h 3 * 4 * Interface for memory timing related functions for OMAP24XX 5 * 6 * Copyright (C) 2005 Texas Instruments Inc. 7 * Richard Woodruff <r-woodruff2@ti.com> 8 * 9 * Copyright (C) 2005 Nokia Corporation 10 * Tony Lindgren <tony@atomide.com> 11 * 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of the GNU General Public License version 2 as 14 * published by the Free Software Foundation. 15 */ 16 17/* Memory timings */ 18#define M_DDR 1 19#define M_LOCK_CTRL (1 << 2) 20#define M_UNLOCK 0 21#define M_LOCK 1 22 23struct memory_timings { 24 u32 m_type; /* ddr = 1, sdr = 0 */ 25 u32 dll_mode; /* use lock mode = 1, unlock mode = 0 */ 26 u32 slow_dll_ctrl; /* unlock mode, dll value for slow speed */ 27 u32 fast_dll_ctrl; /* unlock mode, dll value for fast speed */ 28 u32 base_cs; /* base chip select to use for calculations */ 29}; 30 31extern void omap2_init_memory_params(u32 force_lock_to_unlock_mode); 32extern u32 omap2_memory_get_slow_dll_ctrl(void); 33extern u32 omap2_memory_get_fast_dll_ctrl(void); 34extern u32 omap2_memory_get_type(void); 35