board/overo/spl.c

   1 /*
   2  * Maintainer : Steve Sakoman <steve@sakoman.com>
   3  *
   4  * Derived from Beagle Board, 3430 SDP, and OMAP3EVM code by
   5  *      Richard Woodruff <r-woodruff2@ti.com>
   6  *      Syed Mohammed Khasim <khasim@ti.com>
   7  *      Sunil Kumar <sunilsaini05@gmail.com>
   8  *      Shashi Ranjan <shashiranjanmca05@gmail.com>
   9  *
  10  * (C) Copyright 2004-2008
  11  * Texas Instruments, <www.ti.com>
  12  *
  13  * SPDX-License-Identifier:     GPL-2.0+
  14  */
  15 #include <asm/io.h>
  16 #include <asm/arch/mem.h>
  17 #include <asm/arch/sys_proto.h>
  18 #include "overo.h"
  19
  20 /*
  21  * Routine: get_board_mem_timings
  22  * Description: If we use SPL then there is no x-loader nor config header
  23  * so we have to setup the DDR timings ourself on both banks.
  24  */
  25 void get_board_mem_timings(struct board_sdrc_timings *timings)
  26 {
  27         timings->mr = MICRON_V_MR_165;
  28         switch (get_board_revision()) {
  29         case REVISION_0: /* Micron 1286MB/256MB, 1/2 banks of 128MB */
  30                 timings->mcfg = MICRON_V_MCFG_165(256 << 20);
  31                 timings->ctrla = MICRON_V_ACTIMA_165;
  32                 timings->ctrlb = MICRON_V_ACTIMB_165;
  33                 timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
  34                 break;
  35         case REVISION_1: /* Micron 256MB/512MB, 1/2 banks of 256MB */
  36         case REVISION_4:
  37                 timings->mcfg = MICRON_V_MCFG_200(256 << 20);
  38                 timings->ctrla = MICRON_V_ACTIMA_200;
  39                 timings->ctrlb = MICRON_V_ACTIMB_200;
  40                 timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz;
  41                 break;
  42         case REVISION_2: /* Hynix 256MB/512MB, 1/2 banks of 256MB */
  43                 timings->mcfg = HYNIX_V_MCFG_200(256 << 20);
  44                 timings->ctrla = HYNIX_V_ACTIMA_200;
  45                 timings->ctrlb = HYNIX_V_ACTIMB_200;
  46                 timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz;
  47                 break;
  48         case REVISION_3: /* Micron 512MB/1024MB, 1/2 banks of 512MB */
  49                 timings->mcfg = MCFG(512 << 20, 15);
  50                 timings->ctrla = MICRON_V_ACTIMA_200;
  51                 timings->ctrlb = MICRON_V_ACTIMB_200;
  52                 timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz;
  53                 break;
  54         default:
  55                 timings->mcfg = MICRON_V_MCFG_165(128 << 20);
  56                 timings->ctrla = MICRON_V_ACTIMA_165;
  57                 timings->ctrlb = MICRON_V_ACTIMB_165;
  58                 timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
  59         }
  60 }