#include <asm/fsl_ddr_sdram.h>
#include <asm/fsl_ddr_dimm_params.h>
#include <asm/fsl_law.h>
+#include "ddr.h"
DECLARE_GLOBAL_DATA_PTR;
-struct board_specific_parameters {
- u32 n_ranks;
- u32 datarate_mhz_high;
- u32 clk_adjust;
- u32 wrlvl_start;
- u32 wrlvl_ctl_2;
- u32 wrlvl_ctl_3;
- u32 cpo;
- u32 write_data_delay;
- u32 force_2T;
-};
-
-/*
- * This table contains 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| clk| wrlvl | wrlvl | wrlvl | cpo |wrdata|2T
- * ranks| mhz|adjst| start | ctl2 | ctl3 | |delay |
- */
- {2, 1350, 5, 7, 0x0809090b, 0x0c0c0d09, 0xff, 2, 0},
- {2, 1666, 5, 8, 0x080a0a0c, 0x0c0d0e0a, 0xff, 2, 0},
- {2, 2140, 5, 8, 0x090a0b0c, 0x0e0f100b, 0xff, 2, 0},
- {1, 1350, 5, 8, 0x0809090b, 0x0c0c0d0a, 0xff, 2, 0},
- {1, 1700, 5, 8, 0x080a0a0c, 0x0c0d0e0a, 0xff, 2, 0},
- {1, 1900, 4, 8, 0x080a0a0c, 0x0e0e0f0a, 0xff, 2, 0},
- {1, 2140, 4, 8, 0x090a0b0c, 0x0e0f100b, 0xff, 2, 0},
- {}
-};
-
-/*
- * The three slots have slightly different timing. The center values are good
- * for all slots. We use identical speed tables for them. In future use, if
- * DIMMs require separated tables, make more entries as needed.
- */
-static const struct board_specific_parameters *udimms[] = {
- udimm0,
-};
-
-static const struct board_specific_parameters rdimm0[] = {
- /*
- * memory controller 0
- * num| hi| clk| wrlvl | wrlvl | wrlvl | cpo |wrdata|2T
- * ranks| mhz|adjst| start | ctl2 | ctl3 | |delay |
- */
- {4, 1350, 5, 9, 0x08070605, 0x07080805, 0xff, 2, 0},
- {4, 1666, 5, 8, 0x08070605, 0x07080805, 0xff, 2, 0},
- {4, 2140, 5, 8, 0x08070605, 0x07081805, 0xff, 2, 0},
- {2, 1350, 5, 7, 0x0809090b, 0x0c0c0d09, 0xff, 2, 0},
- {2, 1666, 5, 8, 0x080a0a0c, 0x0c0d0e0a, 0xff, 2, 0},
- {2, 2140, 5, 8, 0x090a0b0c, 0x0e0f100b, 0xff, 2, 0},
- {1, 1350, 5, 8, 0x0809090b, 0x0c0c0d0a, 0xff, 2, 0},
- {1, 1700, 5, 8, 0x080a0a0c, 0x0c0d0e0a, 0xff, 2, 0},
- {1, 1900, 4, 8, 0x080a0a0c, 0x0e0e0f0a, 0xff, 2, 0},
- {1, 2140, 4, 8, 0x090a0b0c, 0x0e0f100b, 0xff, 2, 0},
- {}
-};
-
-/*
- * The three slots have slightly different timing. See comments above.
- */
-static const struct board_specific_parameters *rdimms[] = {
- rdimm0,
-};
-
void fsl_ddr_board_options(memctl_options_t *popts,
dimm_params_t *pdimm,
unsigned int ctrl_num)
*/
ddr_freq = get_ddr_freq(0) / 1000000;
while (pbsp->datarate_mhz_high) {
- if (pbsp->n_ranks == pdimm->n_ranks) {
+ 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 =
panic("DIMM is not supported by this board");
}
found:
+ debug("Found timing match: n_ranks %d, data rate %d, rank_gb %d\n"
+ "\tclk_adjust %d, wrlvl_start %d, wrlvl_ctrl_2 0x%x, "
+ "wrlvl_ctrl_3 0x%x\n",
+ pbsp->n_ranks, pbsp->datarate_mhz_high, pbsp->rank_gb,
+ pbsp->clk_adjust, pbsp->wrlvl_start, pbsp->wrlvl_ctl_2,
+ pbsp->wrlvl_ctl_3);
+
/*
* Factors to consider for half-strength driver enable:
* - number of DIMMs installed