[U-Boot] [PATCH 2/2] mpc85xx/T1040QDS_D4: Add DDR4 support
York Sun
yorksun at freescale.com
Fri Mar 28 01:54:48 CET 2014
T1040QDS_D4 is a variant of T1040QDS, with additional circuit to support
DDR4 memory.
Signed-off-by: York Sun <yorksun at freescale.com>
---
board/freescale/t1040qds/ddr.c | 17 ++++++++---------
board/freescale/t1040qds/ddr.h | 37 +++++++++++++++++++------------------
boards.cfg | 1 +
include/configs/T1040QDS.h | 4 +++-
4 files changed, 31 insertions(+), 28 deletions(-)
diff --git a/board/freescale/t1040qds/ddr.c b/board/freescale/t1040qds/ddr.c
index da89a36..43f952f 100644
--- a/board/freescale/t1040qds/ddr.c
+++ b/board/freescale/t1040qds/ddr.c
@@ -1,5 +1,5 @@
/*
- * Copyright 2013 Freescale Semiconductor, Inc.
+ * Copyright 2013-2014 Freescale Semiconductor, Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
@@ -39,14 +39,10 @@ void fsl_ddr_board_options(memctl_options_t *popts,
if (pbsp->n_ranks == pdimm->n_ranks &&
(pdimm->rank_density >> 30) >= pbsp->rank_gb) {
if (ddr_freq <= pbsp->datarate_mhz_high) {
- popts->cpo_override = pbsp->cpo;
- popts->write_data_delay =
- pbsp->write_data_delay;
popts->clk_adjust = pbsp->clk_adjust;
popts->wrlvl_start = pbsp->wrlvl_start;
popts->wrlvl_ctl_2 = pbsp->wrlvl_ctl_2;
popts->wrlvl_ctl_3 = pbsp->wrlvl_ctl_3;
- popts->twot_en = pbsp->force_2t;
goto found;
}
pbsp_highest = pbsp;
@@ -59,13 +55,10 @@ void fsl_ddr_board_options(memctl_options_t *popts,
printf("for data rate %lu MT/s\n", ddr_freq);
printf("Trying to use the highest speed (%u) parameters\n",
pbsp_highest->datarate_mhz_high);
- popts->cpo_override = pbsp_highest->cpo;
- popts->write_data_delay = pbsp_highest->write_data_delay;
popts->clk_adjust = pbsp_highest->clk_adjust;
popts->wrlvl_start = pbsp_highest->wrlvl_start;
popts->wrlvl_ctl_2 = pbsp->wrlvl_ctl_2;
popts->wrlvl_ctl_3 = pbsp->wrlvl_ctl_3;
- popts->twot_en = pbsp_highest->force_2t;
} else {
panic("DIMM is not supported by this board");
}
@@ -81,7 +74,7 @@ found:
* Factors to consider for half-strength driver enable:
* - number of DIMMs installed
*/
- popts->half_strength_driver_enable = 0;
+ popts->half_strength_driver_enable = 1;
/*
* Write leveling override
*/
@@ -97,8 +90,14 @@ found:
popts->zq_en = 1;
/* DHC_EN =1, ODT = 75 Ohm */
+#ifdef CONFIG_SYS_FSL_DDR4
+ popts->ddr_cdr1 = DDR_CDR1_DHC_EN | DDR_CDR1_ODT(DDR_CDR_ODT_80ohm);
+ popts->ddr_cdr2 = DDR_CDR2_ODT(DDR_CDR_ODT_80ohm) |
+ DDR_CDR2_VREF_OVRD(70); /* Vref = 70% */
+#else
popts->ddr_cdr1 = DDR_CDR1_DHC_EN | DDR_CDR1_ODT(DDR_CDR_ODT_75ohm);
popts->ddr_cdr2 = DDR_CDR2_ODT(DDR_CDR_ODT_75ohm);
+#endif
}
phys_size_t initdram(int board_type)
diff --git a/board/freescale/t1040qds/ddr.h b/board/freescale/t1040qds/ddr.h
index afa72af..a6e1673 100644
--- a/board/freescale/t1040qds/ddr.h
+++ b/board/freescale/t1040qds/ddr.h
@@ -1,5 +1,5 @@
/*
- * Copyright 2013 Freescale Semiconductor, Inc.
+ * Copyright 2013-2014 Freescale Semiconductor, Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
@@ -14,9 +14,6 @@ struct board_specific_parameters {
u32 wrlvl_start;
u32 wrlvl_ctl_2;
u32 wrlvl_ctl_3;
- u32 cpo;
- u32 write_data_delay;
- u32 force_2t;
};
/*
@@ -28,21 +25,25 @@ struct board_specific_parameters {
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 |
+ * num| hi| rank| clk| wrlvl | wrlvl | wrlvl |
+ * ranks| mhz| GB |adjst| start | ctl2 | ctl3 |
*/
- {2, 833, 4, 4, 6, 0x06060607, 0x08080807, 0xff, 2, 0},
- {2, 833, 0, 4, 6, 0x06060607, 0x08080807, 0xff, 2, 0},
- {2, 1350, 4, 4, 7, 0x0708080A, 0x0A0B0C09, 0xff, 2, 0},
- {2, 1350, 0, 4, 7, 0x0708080A, 0x0A0B0C09, 0xff, 2, 0},
- {2, 1666, 4, 4, 7, 0x0808090B, 0x0C0D0E0A, 0xff, 2, 0},
- {2, 1666, 0, 4, 7, 0x0808090B, 0x0C0D0E0A, 0xff, 2, 0},
- {1, 833, 4, 4, 6, 0x06060607, 0x08080807, 0xff, 2, 0},
- {1, 833, 0, 4, 6, 0x06060607, 0x08080807, 0xff, 2, 0},
- {1, 1350, 4, 4, 7, 0x0708080A, 0x0A0B0C09, 0xff, 2, 0},
- {1, 1350, 0, 4, 7, 0x0708080A, 0x0A0B0C09, 0xff, 2, 0},
- {1, 1666, 4, 4, 7, 0x0808090B, 0x0C0D0E0A, 0xff, 2, 0},
- {1, 1666, 0, 4, 7, 0x0808090B, 0x0C0D0E0A, 0xff, 2, 0},
+#ifdef CONFIG_SYS_FSL_DDR4
+ {2, 1666, 0, 4, 7, 0x0808090B, 0x0C0D0E0A,},
+ {2, 1900, 0, 4, 6, 0x08080A0C, 0x0D0E0F0A,},
+ {1, 1666, 0, 4, 6, 0x0708090B, 0x0C0D0E09,},
+ {1, 1900, 0, 4, 6, 0x08080A0C, 0x0D0E0F0A,},
+ {1, 2200, 0, 4, 7, 0x08090A0D, 0x0F0F100C,},
+#elif defined(CONFIG_SYS_FSL_DDR3)
+ {2, 833, 0, 4, 6, 0x06060607, 0x08080807,},
+ {2, 1350, 0, 4, 7, 0x0708080A, 0x0A0B0C09,},
+ {2, 1666, 0, 4, 7, 0x0808090B, 0x0C0D0E0A,},
+ {1, 833, 0, 4, 6, 0x06060607, 0x08080807,},
+ {1, 1350, 0, 4, 7, 0x0708080A, 0x0A0B0C09,},
+ {1, 1666, 0, 4, 7, 0x0808090B, 0x0C0D0E0A,},
+#else
+#error DDR type not defined
+#endif
{}
};
diff --git a/boards.cfg b/boards.cfg
index 69c8936..849dbc2 100644
--- a/boards.cfg
+++ b/boards.cfg
@@ -932,6 +932,7 @@ Active powerpc mpc85xx - freescale p2041rdb
Active powerpc mpc85xx - freescale p2041rdb P2041RDB_SPIFLASH P2041RDB:RAMBOOT_PBL,SPIFLASH,SYS_TEXT_BASE=0xFFF40000 -
Active powerpc mpc85xx - freescale p2041rdb P2041RDB_SRIO_PCIE_BOOT P2041RDB:SRIO_PCIE_BOOT_SLAVE,SYS_TEXT_BASE=0xFFF40000 -
Active powerpc mpc85xx - freescale t1040qds T1040QDS T1040QDS:PPC_T1040 Poonam Aggrwal <poonam.aggrwal at freescale.com>
+Active powerpc mpc85xx - freescale t1040qds T1040QDS_D4 T1040QDS:PPC_T1040,SYS_FSL_DDR4 Poonam Aggrwal <poonam.aggrwal at freescale.com>
Active powerpc mpc85xx - freescale t104xrdb T1040RDB T1040RDB:PPC_T1040 Poonam Aggrwal <poonam.aggrwal at freescale.com>
Active powerpc mpc85xx - freescale t104xrdb T1042RDB_PI T1042RDB_PI:PPC_T1042 Poonam Aggrwal <poonam.aggrwal at freescale.com>
Active powerpc mpc85xx - freescale t208xqds T2080QDS T208xQDS:PPC_T2080 -
diff --git a/include/configs/T1040QDS.h b/include/configs/T1040QDS.h
index 993f9ae..59cc3fc 100644
--- a/include/configs/T1040QDS.h
+++ b/include/configs/T1040QDS.h
@@ -1,5 +1,5 @@
/*
- * Copyright 2013 Freescale Semiconductor, Inc.
+ * Copyright 2013-2014 Freescale Semiconductor, Inc.
*
* See file CREDITS for list of people who contributed to this
* project.
@@ -169,8 +169,10 @@ unsigned long get_board_ddr_clk(void);
#define CONFIG_CHIP_SELECTS_PER_CTRL (2 * CONFIG_DIMM_SLOTS_PER_CTLR)
#define CONFIG_DDR_SPD
+#ifndef CONFIG_SYS_FSL_DDR4
#define CONFIG_SYS_FSL_DDR3
#define CONFIG_FSL_DDR_INTERACTIVE
+#endif
#define CONFIG_SYS_SPD_BUS_NUM 0
#define SPD_EEPROM_ADDRESS 0x51
--
1.7.9.5
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