arch/arm/mach-omap2/memory.h

   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
  23 struct 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
  31 extern void omap2_init_memory_params(u32 force_lock_to_unlock_mode);
  32 extern u32 omap2_memory_get_slow_dll_ctrl(void);
  33 extern u32 omap2_memory_get_fast_dll_ctrl(void);
  34 extern u32 omap2_memory_get_type(void);