mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-14 17:07:38 +00:00
1a4596601f
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
37 lines
909 B
C
37 lines
909 B
C
/*
|
|
* Copyright (C) 2006 Atmel Corporation
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
#ifndef __ASM_AVR32_SDRAM_H
|
|
#define __ASM_AVR32_SDRAM_H
|
|
|
|
struct sdram_config {
|
|
/* Number of data bits. */
|
|
enum {
|
|
SDRAM_DATA_16BIT = 16,
|
|
SDRAM_DATA_32BIT = 32,
|
|
} data_bits;
|
|
|
|
/* Number of address bits */
|
|
uint8_t row_bits, col_bits, bank_bits;
|
|
|
|
/* SDRAM timings in cycles */
|
|
uint8_t cas, twr, trc, trp, trcd, tras, txsr;
|
|
|
|
/* SDRAM refresh period in cycles */
|
|
unsigned long refresh_period;
|
|
};
|
|
|
|
/*
|
|
* Attempt to initialize the SDRAM controller using the specified
|
|
* parameters. Return the expected size of the memory area based on
|
|
* the number of address and data bits.
|
|
*
|
|
* The caller should verify that the configuration is correct by
|
|
* running a memory test, e.g. get_ram_size().
|
|
*/
|
|
extern unsigned long sdram_init(void *sdram_base,
|
|
const struct sdram_config *config);
|
|
|
|
#endif /* __ASM_AVR32_SDRAM_H */
|