u-boot/arch/arm/include/asm/arch-am33xx/sys_proto.h
Satyanarayana, Sandhya 6995a28937 am33xx evm: Update secure_emif_sdram_config during ddr init
This patch updates secure_emif_sdram_config with the
same value written to sdram_config during ddr3 initialization.

During suspend/resume, this value is copied into sdram_config.
With this, a write to sdram_config at the end of resume sequence
which triggers an init sequence can be avoided.

Without this register write in place, the DDR_RESET line goes
low for a few cycles during resume which is a violation of the
JEDEC spec.

Signed-off-by: Satyanarayana, Sandhya <sandhya.satyanarayana@ti.com>
2012-09-01 14:58:19 +02:00

63 lines
1.8 KiB
C

/*
* sys_proto.h
*
* System information header
*
* Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/
*
* 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.
*/
#ifndef _SYS_PROTO_H_
#define _SYS_PROTO_H_
/*
* AM335x parts define a system EEPROM that defines certain sub-fields.
* We use these fields to in turn see what board we are on, and what
* that might require us to set or not set.
*/
#define HDR_NO_OF_MAC_ADDR 3
#define HDR_ETH_ALEN 6
#define HDR_NAME_LEN 8
struct am335x_baseboard_id {
unsigned int magic;
char name[HDR_NAME_LEN];
char version[4];
char serial[12];
char config[32];
char mac_addr[HDR_NO_OF_MAC_ADDR][HDR_ETH_ALEN];
};
#define BOARD_REV_ID 0x0
u32 get_cpu_rev(void);
u32 get_sysboot_value(void);
#ifdef CONFIG_DISPLAY_CPUINFO
int print_cpuinfo(void);
#endif
extern struct ctrl_stat *cstat;
u32 get_device_type(void);
void setup_clocks_for_console(void);
void ddr_pll_config(unsigned int ddrpll_M);
/*
* We have three pin mux functions that must exist. We must be able to enable
* uart0, for initial output and i2c0 to read the main EEPROM. We then have a
* main pinmux function that can be overridden to enable all other pinmux that
* is required on the board.
*/
void enable_uart0_pin_mux(void);
void enable_i2c0_pin_mux(void);
void enable_board_pin_mux(struct am335x_baseboard_id *header);
#endif