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https://github.com/brain-hackers/u-boot-brain
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c7eae7fcb1
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>
60 lines
1.8 KiB
C
60 lines
1.8 KiB
C
/*
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* Copyright 2014 Freescale Semiconductor, Inc.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef __DDR_H__
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#define __DDR_H__
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struct board_specific_parameters {
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u32 n_ranks;
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u32 datarate_mhz_high;
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u32 rank_gb;
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u32 clk_adjust;
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u32 wrlvl_start;
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u32 wrlvl_ctl_2;
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u32 wrlvl_ctl_3;
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u32 cpo_override;
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u32 write_data_delay;
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u32 force_2t;
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};
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/*
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* These tables contain all valid speeds we want to override with board
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* specific parameters. datarate_mhz_high values need to be in ascending order
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* for each n_ranks group.
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*/
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static const struct board_specific_parameters udimm0[] = {
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/*
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* memory controller 0
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* num| hi| rank| clk| wrlvl | wrlvl | wrlvl | cpo |wrdata|2T
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* ranks| mhz| GB |adjst| start | ctl2 | ctl3 | |delay |
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*/
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#ifdef CONFIG_SYS_FSL_DDR4
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{2, 1666, 0, 4, 7, 0x0808090B, 0x0C0D0E0A,},
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{2, 1900, 0, 4, 6, 0x08080A0C, 0x0D0E0F0A,},
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{1, 1666, 0, 4, 8, 0x090A0B0B, 0x0C0D0E0C,},
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{1, 1900, 0, 4, 9, 0x0A0B0C0B, 0x0D0E0F0D,},
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{1, 2200, 0, 4, 10, 0x0B0C0D0C, 0x0E0F110E,},
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#elif defined(CONFIG_SYS_FSL_DDR3)
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{1, 833, 1, 6, 8, 0x06060607, 0x08080807, 0x1f, 2, 0},
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{1, 1350, 1, 6, 8, 0x0708080A, 0x0A0B0C09, 0x1f, 2, 0},
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{1, 833, 2, 6, 8, 0x06060607, 0x08080807, 0x1f, 2, 0},
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{1, 1350, 2, 6, 8, 0x0708080A, 0x0A0B0C09, 0x1f, 2, 0},
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{2, 833, 4, 6, 8, 0x06060607, 0x08080807, 0x1f, 2, 0},
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{2, 1350, 4, 6, 8, 0x0708080A, 0x0A0B0C09, 0x1f, 2, 0},
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{2, 1350, 0, 6, 8, 0x0708080A, 0x0A0B0C09, 0x1f, 2, 0},
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{2, 1666, 4, 4, 0xa, 0x0B08090C, 0x0B0E0D0A, 0x1f, 2, 0},
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{2, 1666, 0, 4, 0xa, 0x0B08090C, 0x0B0E0D0A, 0x1f, 2, 0},
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#else
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#error DDR type not defined
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#endif
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{}
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};
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static const struct board_specific_parameters *udimms[] = {
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udimm0,
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};
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#endif
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