blob: 26b6ec7c3b5965fc618fd43dcdd2c8eb5fe52d39 [file] [log] [blame]
Jimmy Zhanga308d462012-04-10 05:17:06 +00001/*
2 * Copyright (c) 2011 The Chromium OS Authors.
3 *
4 * See file CREDITS for list of people who contributed to this
5 * project.
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 of
10 * the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
20 * MA 02111-1307 USA
21 */
22
23#include <common.h>
24#include <asm/io.h>
Jimmy Zhanga308d462012-04-10 05:17:06 +000025#include <asm/arch/clock.h>
26#include <asm/arch/emc.h>
27#include <asm/arch/pmu.h>
Tom Warrenab371962012-09-19 15:50:56 -070028#include <asm/arch/tegra.h>
29#include <asm/arch-tegra/ap.h>
30#include <asm/arch-tegra/clk_rst.h>
31#include <asm/arch-tegra/sys_proto.h>
Jimmy Zhanga308d462012-04-10 05:17:06 +000032
33DECLARE_GLOBAL_DATA_PTR;
34
35/* These rates are hard-coded for now, until fdt provides them */
36#define EMC_SDRAM_RATE_T20 (333000 * 2 * 1000)
37#define EMC_SDRAM_RATE_T25 (380000 * 2 * 1000)
38
39int board_emc_init(void)
40{
41 unsigned rate;
42
43 switch (tegra_get_chip_type()) {
44 default:
45 case TEGRA_SOC_T20:
46 rate = EMC_SDRAM_RATE_T20;
47 break;
48 case TEGRA_SOC_T25:
49 rate = EMC_SDRAM_RATE_T25;
50 break;
51 }
52 return tegra_set_emc(gd->fdt_blob, rate);
53}