u-boot/board/freescale/ls2085a/ddr.h
York Sun d9c68b1444 ARMv8/ls2085a_emu: Enable DP-DDR as standalone memory block
DP-DDR is used for DPAA, separated from main memory pool for general
use. It has 32-bit bus width and use a standard DDR4 DIMM (64-bit).

Signed-off-by: York Sun <yorksun@freescale.com>
2014-09-25 08:36:18 -07:00

86 lines
1.9 KiB
C

/*
* Copyright 2014 Freescale Semiconductor, Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __DDR_H__
#define __DDR_H__
struct board_specific_parameters {
u32 n_ranks;
u32 datarate_mhz_high;
u32 rank_gb;
u32 clk_adjust;
u32 wrlvl_start;
u32 wrlvl_ctl_2;
u32 wrlvl_ctl_3;
};
/*
* These tables contain all valid speeds we want to override with board
* specific parameters. datarate_mhz_high values need to be in ascending order
* for each n_ranks group.
*/
static const struct board_specific_parameters udimm0[] = {
/*
* memory controller 0
* num| hi| rank| clk| wrlvl | wrlvl | wrlvl
* ranks| mhz| GB |adjst| start | ctl2 | ctl3
*/
{2, 2140, 0, 4, 4, 0x0, 0x0},
{1, 2140, 0, 4, 4, 0x0, 0x0},
{}
};
/* DP-DDR DIMM */
static const struct board_specific_parameters udimm2[] = {
/*
* memory controller 2
* num| hi| rank| clk| wrlvl | wrlvl | wrlvl
* ranks| mhz| GB |adjst| start | ctl2 | ctl3
*/
{2, 2140, 0, 4, 4, 0x0, 0x0},
{1, 2140, 0, 4, 4, 0x0, 0x0},
{}
};
static const struct board_specific_parameters rdimm0[] = {
/*
* memory controller 0
* num| hi| rank| clk| wrlvl | wrlvl | wrlvl
* ranks| mhz| GB |adjst| start | ctl2 | ctl3
*/
{4, 2140, 0, 5, 4, 0x0, 0x0},
{2, 2140, 0, 5, 4, 0x0, 0x0},
{1, 2140, 0, 4, 4, 0x0, 0x0},
{}
};
/* DP-DDR DIMM */
static const struct board_specific_parameters rdimm2[] = {
/*
* memory controller 2
* num| hi| rank| clk| wrlvl | wrlvl | wrlvl
* ranks| mhz| GB |adjst| start | ctl2 | ctl3
*/
{4, 2140, 0, 5, 4, 0x0, 0x0},
{2, 2140, 0, 5, 4, 0x0, 0x0},
{1, 2140, 0, 4, 4, 0x0, 0x0},
{}
};
static const struct board_specific_parameters *udimms[] = {
udimm0,
udimm0,
udimm2,
};
static const struct board_specific_parameters *rdimms[] = {
rdimm0,
rdimm0,
rdimm2,
};
#endif