*/
#include <common.h>
-#include <i2c.h>
#include <asm/fsl_ddr_sdram.h>
#include <asm/fsl_ddr_dimm_params.h>
-static void get_spd(ddr2_spd_eeprom_t *spd, unsigned char i2c_address)
-{
- i2c_read(i2c_address, 0, 1, (uchar *)spd, sizeof(ddr2_spd_eeprom_t));
-}
-
-unsigned int fsl_ddr_get_mem_data_rate(void)
-{
- return get_ddr_freq(0);
-}
-
-void fsl_ddr_get_spd(ddr2_spd_eeprom_t *ctrl_dimms_spd,
- unsigned int ctrl_num)
-{
- unsigned int i;
- unsigned int i2c_address = 0;
-
- for (i = 0; i < CONFIG_DIMM_SLOTS_PER_CTLR; i++) {
- if (ctrl_num == 0 && i == 0) {
- i2c_address = SPD_EEPROM_ADDRESS1;
- }
- if (ctrl_num == 1 && i == 0) {
- i2c_address = SPD_EEPROM_ADDRESS2;
- }
- get_spd(&(ctrl_dimms_spd[i]), i2c_address);
- }
-}
-
typedef struct {
u32 datarate_mhz_low;
u32 datarate_mhz_high;
u32 force_2T;
} board_specific_parameters_t;
-/* ranges for parameters:
- * wr_data_delay = 0-6
- * clk adjust = 0-8
- * cpo 2-0x1E (30)
+/*
+ * CPO value doesn't matter if workaround for errata 111 and 134 enabled.
+ *
+ * For DDR2 DIMM, all combinations of clk_adjust and write_data_delay have been
+ * tested. For RDIMM, clk_adjust = 4 and write_data_delay = 3 is optimized for
+ * all clocks from 400MT/s to 800MT/s, verified with Kingston KVR800D2D8P6/2G.
+ * For UDIMM, clk_adjust = 8 and write_delay = 5 is optimized for all clocks
+ * from 400MT/s to 800MT/s, verified with Micron MT18HTF25672AY-800E1.
*/
-
-
-/* XXX: these values need to be checked for all interleaving modes. */
-/* XXX: No reliable dual-rank 800 MHz setting has been found. It may
- * seem reliable, but errors will appear when memory intensive
- * program is run. */
-/* XXX: Single rank at 800 MHz is OK. */
-const board_specific_parameters_t board_specific_parameters[][20] = {
+const board_specific_parameters_t board_specific_parameters_udimm[][20] = {
{
- /* memory controller 0 */
- /* lo| hi| num| clk| cpo|wrdata|2T */
- /* mhz| mhz|ranks|adjst| | delay| */
- { 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, 1},
+ /*
+ * memory controller 0
+ * lo| hi| num| clk| cpo|wrdata|2T
+ * mhz| mhz|ranks|adjst| | delay|
+ */
+ { 0, 333, 2, 8, 7, 5, 0},
+ {334, 400, 2, 8, 9, 5, 0},
+ {401, 549, 2, 8, 11, 5, 0},
+ {550, 680, 2, 8, 10, 5, 0},
+ {681, 850, 2, 8, 12, 5, 1},
{ 0, 333, 1, 6, 7, 3, 0},
{334, 400, 1, 6, 9, 3, 0},
{401, 549, 1, 6, 11, 3, 0},
},
{
- /* memory controller 1 */
- /* lo| hi| num| clk| cpo|wrdata|2T */
- /* mhz| mhz|ranks|adjst| | delay| */
- { 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, 1},
+ /*
+ * memory controller 1
+ * lo| hi| num| clk| cpo|wrdata|2T
+ * mhz| mhz|ranks|adjst| | delay|
+ */
+ { 0, 333, 2, 8, 7, 5, 0},
+ {334, 400, 2, 8, 9, 5, 0},
+ {401, 549, 2, 8, 11, 5, 0},
+ {550, 680, 2, 8, 11, 5, 0},
+ {681, 850, 2, 8, 13, 5, 1},
{ 0, 333, 1, 6, 7, 3, 0},
{334, 400, 1, 6, 9, 3, 0},
{401, 549, 1, 6, 11, 3, 0},
}
};
+const board_specific_parameters_t board_specific_parameters_rdimm[][20] = {
+ {
+ /*
+ * memory controller 0
+ * lo| hi| num| clk| cpo|wrdata|2T
+ * mhz| mhz|ranks|adjst| | delay|
+ */
+ { 0, 333, 2, 4, 7, 3, 0},
+ {334, 400, 2, 4, 9, 3, 0},
+ {401, 549, 2, 4, 11, 3, 0},
+ {550, 680, 2, 4, 10, 3, 0},
+ {681, 850, 2, 4, 12, 3, 1},
+ },
+
+ {
+ /*
+ * memory controller 1
+ * lo| hi| num| clk| cpo|wrdata|2T
+ * mhz| mhz|ranks|adjst| | delay|
+ */
+ { 0, 333, 2, 4, 7, 3, 0},
+ {334, 400, 2, 4, 9, 3, 0},
+ {401, 549, 2, 4, 11, 3, 0},
+ {550, 680, 2, 4, 11, 3, 0},
+ {681, 850, 2, 4, 13, 3, 1},
+ }
+};
+
void fsl_ddr_board_options(memctl_options_t *popts,
dimm_params_t *pdimm,
unsigned int ctrl_num)
{
- const board_specific_parameters_t *pbsp =
- &(board_specific_parameters[ctrl_num][0]);
- u32 num_params = sizeof(board_specific_parameters[ctrl_num]) /
- sizeof(board_specific_parameters[0][0]);
+ const board_specific_parameters_t *pbsp;
+ u32 num_params;
u32 i;
ulong ddr_freq;
+ if (!pdimm->n_ranks)
+ return;
+
+ if (popts->registered_dimm_en) {
+ pbsp = &(board_specific_parameters_rdimm[ctrl_num][0]);
+ num_params = sizeof(board_specific_parameters_rdimm[ctrl_num]) /
+ sizeof(board_specific_parameters_rdimm[0][0]);
+ } else {
+ pbsp = &(board_specific_parameters_udimm[ctrl_num][0]);
+ num_params = sizeof(board_specific_parameters_udimm[ctrl_num]) /
+ sizeof(board_specific_parameters_udimm[0][0]);
+ }
+
/* 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
popts->cpo_override = pbsp->cpo;
popts->write_data_delay = pbsp->write_data_delay;
popts->twoT_en = pbsp->force_2T;
+ break;
}
pbsp++;
}
+ if (i == num_params) {
+ printf("Warning: board specific timing not found "
+ "for data rate %lu MT/s!\n", ddr_freq);
+ }
+
/*
* Factors to consider for half-strength driver enable:
* - number of DIMMs installed
projects / u-boot / blobdiff