[U-Boot] [Patch v3 7/7] corenet_ds: Extend board specific parameters

York Sun
2011-01-10T22:03:02Z

Extend board specific parameters to include cpo, write leveling override
Extend write leveling sample to 0xf
Adding rcw overrid for quad-rank RDIMMs

Signed-off-by: York Sun <yorksun@freescale.com>
---
arch/powerpc/include/asm/fsl_ddr_sdram.h | 3 +
board/freescale/corenet_ds/ddr.c | 159 +++++++++++++++---------------
2 files changed, 84 insertions(+), 78 deletions(-)

diff --git a/arch/powerpc/include/asm/fsl_ddr_sdram.h b/arch/powerpc/include/asm/fsl_ddr_sdram.h
index 96e308b..6c19d72 100644
--- a/arch/powerpc/include/asm/fsl_ddr_sdram.h
+++ b/arch/powerpc/include/asm/fsl_ddr_sdram.h
@@ -120,6 +120,9 @@ typedef ddr3_spd_eeprom_t generic_spd_eeprom_t;
#define MD_CNTL_WRCW 0x00080000
#define MD_CNTL_MD_VALUE(x) (x & 0x0000FFFF)

+/* DDR_CDR1 */
+#define DDR_CDR1_DHC_EN 0x80000000
+
/* Record of register values computed */
typedef struct fsl_ddr_cfg_regs_s {
struct {
diff --git a/board/freescale/corenet_ds/ddr.c b/board/freescale/corenet_ds/ddr.c
index 85b6c78..6660b01 100644
--- a/board/freescale/corenet_ds/ddr.c
+++ b/board/freescale/corenet_ds/ddr.c
@@ -56,12 +56,14 @@ phys_size_t fixed_sdram(void)
strmhz(buf, sysinfo.freqDDRBus));

ddr_size = (phys_size_t) CONFIG_SYS_SDRAM_SIZE * 1024 * 1024;
+ ddr_cfg_regs.ddr_cdr1 = DDR_CDR1_DHC_EN;
fsl_ddr_set_memctl_regs(&ddr_cfg_regs, 0);

#if (CONFIG_NUM_DDR_CONTROLLERS == 2)
memcpy(&ddr_cfg_regs,
fixed_ddr_parm_1[i].ddr_settings,
sizeof(ddr_cfg_regs));
+ ddr_cfg_regs.ddr_cdr1 = DDR_CDR1_DHC_EN;
fsl_ddr_set_memctl_regs(&ddr_cfg_regs, 1);
#endif

@@ -143,6 +145,7 @@ typedef struct {
u32 datarate_mhz_high;
u32 n_ranks;
u32 clk_adjust;
+ u32 wrlvl_start;
u32 cpo;
u32 write_data_delay;
u32 force_2T;
@@ -162,57 +165,61 @@ typedef struct {
/* XXX: Single rank at 800 MHz is OK. */
const board_specific_parameters_t board_specific_parameters[][30] = {
{
- /* memory controller 0 */
- /* lo| hi| num| clk| cpo|wrdata|2T */
- /* mhz| mhz|ranks|adjst| | delay| */
- { 0, 333, 4, 6, 7, 3, 0},
- {334, 400, 4, 6, 9, 3, 0},
- {401, 549, 4, 6, 11, 3, 0},
- {550, 680, 4, 1, 10, 5, 0},
- {681, 850, 4, 1, 12, 5, 0},
- {851, 1050, 4, 1, 12, 5, 0},
- {1051, 1250, 4, 1, 15, 4, 0},
- {1251, 1350, 4, 1, 15, 4, 0},
- { 0, 333, 2, 6, 7, 3, 0},
- {334, 400, 2, 6, 9, 3, 0},
- {401, 549, 2, 6, 11, 3, 0},
- {550, 680, 2, 1, 10, 5, 0},
- {681, 850, 2, 1, 12, 5, 0},
- {851, 1050, 2, 1, 12, 5, 0},
- {1051, 1250, 2, 1, 15, 4, 0},
- {1251, 1350, 2, 1, 15, 4, 0},
- { 0, 333, 1, 6, 7, 3, 0},
- {334, 400, 1, 6, 9, 3, 0},
- {401, 549, 1, 6, 11, 3, 0},
- {550, 680, 1, 1, 10, 5, 0},
- {681, 850, 1, 1, 12, 5, 0}
+ /*
+ * memory controller 0
+ * lo| hi| num| clk| wrlvl | cpo |wrdata|2T
+ * mhz| mhz|ranks|adjst| start | delay|
+ */
+ { 0, 333, 4, 5, 7, 0xff, 2, 0},
+ {334, 400, 4, 5, 7, 0xff, 2, 0},
+ {401, 549, 4, 5, 7, 0xff, 2, 0},
+ {550, 680, 4, 5, 7, 0xff, 2, 0},
+ {681, 850, 4, 5, 7, 0xff, 2, 0},
+ {851, 1050, 4, 5, 7, 0xff, 2, 0},
+ {1051, 1250, 4, 5, 8, 0xff, 2, 0},
+ {1251, 1350, 4, 5, 9, 0xff, 2, 0},
+ { 0, 333, 2, 5, 7, 0xff, 2, 0},
+ {334, 400, 2, 5, 7, 0xff, 2, 0},
+ {401, 549, 2, 5, 7, 0xff, 2, 0},
+ {550, 680, 2, 5, 7, 0xff, 2, 0},
+ {681, 850, 2, 5, 7, 0xff, 2, 0},
+ {851, 1050, 2, 5, 7, 0xff, 2, 0},
+ {1051, 1250, 2, 5, 7, 0xff, 2, 0},
+ {1251, 1350, 2, 5, 7, 0xff, 2, 0},
+ { 0, 333, 1, 5, 7, 0xff, 2, 0},
+ {334, 400, 1, 5, 7, 0xff, 2, 0},
+ {401, 549, 1, 5, 7, 0xff, 2, 0},
+ {550, 680, 1, 5, 7, 0xff, 2, 0},
+ {681, 850, 1, 5, 7, 0xff, 2, 0}
},

{
- /* memory controller 1 */
- /* lo| hi| num| clk| cpo|wrdata|2T */
- /* mhz| mhz|ranks|adjst| | delay| */
- { 0, 333, 4, 6, 7, 3, 0},
- {334, 400, 4, 6, 9, 3, 0},
- {401, 549, 4, 6, 11, 3, 0},
- {550, 680, 4, 1, 10, 5, 0},
- {681, 850, 4, 1, 12, 5, 0},
- {851, 1050, 4, 1, 12, 5, 0},
- {1051, 1250, 4, 1, 15, 4, 0},
- {1251, 1350, 4, 1, 15, 4, 0},
- { 0, 333, 2, 6, 7, 3, 0},
- {334, 400, 2, 6, 9, 3, 0},
- {401, 549, 2, 6, 11, 3, 0},
- {550, 680, 2, 1, 11, 6, 0},
- {681, 850, 2, 1, 13, 6, 0},
- {851, 1050, 2, 1, 13, 6, 0},
- {1051, 1250, 2, 1, 15, 4, 0},
- {1251, 1350, 2, 1, 15, 4, 0},
- { 0, 333, 1, 6, 7, 3, 0},
- {334, 400, 1, 6, 9, 3, 0},
- {401, 549, 1, 6, 11, 3, 0},
- {550, 680, 1, 1, 11, 6, 0},
- {681, 850, 1, 1, 13, 6, 0}
+ /*
+ * memory controller 1
+ * lo| hi| num| clk| wrlvl | cpo |wrdata|2T
+ * mhz| mhz|ranks|adjst| start | delay|
+ */
+ { 0, 333, 4, 5, 7, 0xff, 2, 0},
+ {334, 400, 4, 5, 7, 0xff, 2, 0},
+ {401, 549, 4, 5, 7, 0xff, 2, 0},
+ {550, 680, 4, 5, 7, 0xff, 2, 0},
+ {681, 850, 4, 5, 7, 0xff, 2, 0},
+ {851, 1050, 4, 5, 7, 0xff, 2, 0},
+ {1051, 1250, 4, 5, 8, 0xff, 2, 0},
+ {1251, 1350, 4, 5, 9, 0xff, 2, 0},
+ { 0, 333, 2, 5, 7, 0xff, 2, 0},
+ {334, 400, 2, 5, 7, 0xff, 2, 0},
+ {401, 549, 2, 5, 7, 0xff, 2, 0},
+ {550, 680, 2, 5, 7, 0xff, 2, 0},
+ {681, 850, 2, 5, 7, 0xff, 2, 0},
+ {851, 1050, 2, 5, 7, 0xff, 2, 0},
+ {1051, 1250, 2, 5, 7, 0xff, 2, 0},
+ {1251, 1350, 2, 5, 7, 0xff, 2, 0},
+ { 0, 333, 1, 5, 7, 0xff, 2, 0},
+ {334, 400, 1, 5, 7, 0xff, 2, 0},
+ {401, 549, 1, 5, 7, 0xff, 2, 0},
+ {550, 680, 1, 5, 7, 0xff, 2, 0},
+ {681, 850, 1, 5, 7, 0xff, 2, 0}
}
};

@@ -227,37 +234,18 @@ void fsl_ddr_board_options(memctl_options_t *popts,
u32 i;
ulong ddr_freq;

- /* set odt_rd_cfg and odt_wr_cfg. If the there is only one dimm in
- * that controller, set odt_wr_cfg to 4 for CS0, and 0 to CS1. If
- * there are two dimms in the controller, set odt_rd_cfg to 3 and
- * odt_wr_cfg to 3 for the even CS, 0 for the odd CS.
- */
- for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
- if (i&1) { /* odd CS */
- popts->cs_local_opts[i].odt_rd_cfg = 0;
- popts->cs_local_opts[i].odt_wr_cfg = 1;
- } else { /* even CS */
- if (CONFIG_DIMM_SLOTS_PER_CTLR == 1) {
- popts->cs_local_opts[i].odt_rd_cfg = 0;
- popts->cs_local_opts[i].odt_wr_cfg = 1;
- } else if (CONFIG_DIMM_SLOTS_PER_CTLR == 2) {
- popts->cs_local_opts[i].odt_rd_cfg = 3;
- popts->cs_local_opts[i].odt_wr_cfg = 3;
- }
- }
- }
-
/* Get clk_adjust, cpo, write_data_delay,2T, according to the board ddr
* freqency and n_banks specified in board_specific_parameters table.
*/
ddr_freq = get_ddr_freq(0) / 1000000;
for (i = 0; i < num_params; i++) {
if (ddr_freq >= pbsp->datarate_mhz_low &&
- ddr_freq <= pbsp->datarate_mhz_high &&
- pdimm->n_ranks == pbsp->n_ranks) {
- popts->cpo_override = 0xff; /* force auto CPO calibration */
- popts->write_data_delay = 2;
- popts->clk_adjust = 5; /* Force value to be 5/8 clock cycle */
+ ddr_freq <= pbsp->datarate_mhz_high &&
+ pdimm[0].n_ranks == pbsp->n_ranks) {
+ 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->twoT_en = pbsp->force_2T;
}
pbsp++;
@@ -272,17 +260,32 @@ void fsl_ddr_board_options(memctl_options_t *popts,
* Write leveling override
*/
popts->wrlvl_override = 1;
- popts->wrlvl_sample = 0xa;
- popts->wrlvl_start = 0x7;
+ popts->wrlvl_sample = 0xf;
+
/*
* Rtt and Rtt_WR override
*/
- popts->rtt_override = 1;
- popts->rtt_override_value = DDR3_RTT_120_OHM;
- popts->rtt_wr_override_value = 0; /* Rtt_WR= dynamic ODT off */
+ popts->rtt_override = 0;

/* Enable ZQ calibration */
popts->zq_en = 1;
+
+ /* DHC_EN =1, ODT = 60 Ohm */
+ popts->ddr_cdr1 = DDR_CDR1_DHC_EN;
+
+ /* override SPD values. rcw_2 should vary at differnt speed */
+ if (pdimm[0].n_ranks == 4) {
+ popts->rcw_override = 1;
+ popts->rcw_1 = 0x000a5a00;
+ if (ddr_freq <= 800)
+ popts->rcw_2 = 0x00000000;
+ else if (ddr_freq <= 1066)
+ popts->rcw_2 = 0x00100000;
+ else if (ddr_freq <= 1333)
+ popts->rcw_2 = 0x00200000;
+ else
+ popts->rcw_2 = 0x00300000;
+ }
}

phys_size_t initdram(int board_type)
--
1.7.0.4