u-boot/board/freescale/ls1021aqds/ddr.h
York Sun c7eae7fcb1 board/ls1021aqds: Add DDR4 support
LS1021AQDS has a variant with DDR4 slot. This patch adds a new defconfig
for this variant to enable DDR4 support. RAW timing parameters are not
added for DDR4. The board timing parameters are only tuned for single-
rank 1600 and 1800MT/s with Micron DIMM 9ASF51272AZ-2G1A1 due to DIMM
availability.

Signed-off-by: York Sun <yorksun@freescale.com>
CC: Alison Wang <alison.wang@freescale.com>
2014-09-25 09:12:12 -07:00

59 lines
1.8 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;
u32 cpo_override;
u32 write_data_delay;
u32 force_2t;
};
/*
* 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 | cpo |wrdata|2T
* ranks| mhz| GB |adjst| start | ctl2 | ctl3 | |delay |
*/
#ifdef CONFIG_SYS_FSL_DDR4
{2, 1666, 0, 4, 7, 0x0808090B, 0x0C0D0E0A,},
{2, 1900, 0, 4, 6, 0x08080A0C, 0x0D0E0F0A,},
{1, 1666, 0, 4, 8, 0x090A0B0B, 0x0C0D0E0C,},
{1, 1900, 0, 4, 9, 0x0A0B0C0B, 0x0D0E0F0D,},
{1, 2200, 0, 4, 10, 0x0B0C0D0C, 0x0E0F110E,},
#elif defined(CONFIG_SYS_FSL_DDR3)
{1, 833, 1, 6, 8, 0x06060607, 0x08080807, 0x1f, 2, 0},
{1, 1350, 1, 6, 8, 0x0708080A, 0x0A0B0C09, 0x1f, 2, 0},
{1, 833, 2, 6, 8, 0x06060607, 0x08080807, 0x1f, 2, 0},
{1, 1350, 2, 6, 8, 0x0708080A, 0x0A0B0C09, 0x1f, 2, 0},
{2, 833, 4, 6, 8, 0x06060607, 0x08080807, 0x1f, 2, 0},
{2, 1350, 4, 6, 8, 0x0708080A, 0x0A0B0C09, 0x1f, 2, 0},
{2, 1350, 0, 6, 8, 0x0708080A, 0x0A0B0C09, 0x1f, 2, 0},
{2, 1666, 4, 4, 0xa, 0x0B08090C, 0x0B0E0D0A, 0x1f, 2, 0},
{2, 1666, 0, 4, 0xa, 0x0B08090C, 0x0B0E0D0A, 0x1f, 2, 0},
#else
#error DDR type not defined
#endif
{}
};
static const struct board_specific_parameters *udimms[] = {
udimm0,
};
#endif