2 * Copyright (c) 2011 The Chromium OS Authors.
4 * See file CREDITS for list of people who contributed to this
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.
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.
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,
25 #include <asm/arch/ap20.h>
26 #include <asm/arch/clk_rst.h>
27 #include <asm/arch/clock.h>
28 #include <asm/arch/emc.h>
29 #include <asm/arch/pmu.h>
30 #include <asm/arch/sys_proto.h>
31 #include <asm/arch/tegra2.h>
33 DECLARE_GLOBAL_DATA_PTR;
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)
39 int board_emc_init(void)
43 switch (tegra_get_chip_type()) {
46 rate = EMC_SDRAM_RATE_T20;
49 rate = EMC_SDRAM_RATE_T25;
52 return tegra_set_emc(gd->fdt_blob, rate);