u-boot/board/nvidia/common/emc.c
Tom Warren 49493cb714 Tegra: Split tegra_get_chip_type() into soc & sku funcs
As suggested by Stephen Warren, use tegra_get_chip() to return
the pure CHIPID for a Tegra SoC (i.e. 0x20 for Tegra20, 0x30 for
Tegra30, etc.) and rename tegra_get_chip_type() to reflect its true
function, i.e. tegra_get_chip_sku(), which returns an ID like
TEGRA_SOC_T25, TEGRA_SOC_T33, etc.

Signed-off-by: Tom Warren <twarren@nvidia.com>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
2013-04-15 11:01:38 -07:00

53 lines
1.5 KiB
C

/*
* Copyright (c) 2011 The Chromium OS Authors.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <asm/io.h>
#include <asm/arch/clock.h>
#include <asm/arch/emc.h>
#include <asm/arch/pmu.h>
#include <asm/arch/tegra.h>
#include <asm/arch-tegra/ap.h>
#include <asm/arch-tegra/clk_rst.h>
#include <asm/arch-tegra/sys_proto.h>
DECLARE_GLOBAL_DATA_PTR;
/* These rates are hard-coded for now, until fdt provides them */
#define EMC_SDRAM_RATE_T20 (333000 * 2 * 1000)
#define EMC_SDRAM_RATE_T25 (380000 * 2 * 1000)
int board_emc_init(void)
{
unsigned rate;
switch (tegra_get_chip_sku()) {
default:
case TEGRA_SOC_T20:
rate = EMC_SDRAM_RATE_T20;
break;
case TEGRA_SOC_T25:
rate = EMC_SDRAM_RATE_T25;
break;
}
return tegra_set_emc(gd->fdt_blob, rate);
}