#include <asm/fsl_ddr_sdram.h>
#include <asm/fsl_ddr_dimm_params.h>
-static void get_spd(ddr3_spd_eeprom_t *spd, unsigned char i2c_address)
+void get_spd(ddr3_spd_eeprom_t *spd, u8 i2c_address)
{
i2c_read(i2c_address, SPD_EEPROM_OFFSET, 2, (uchar *)spd,
sizeof(ddr3_spd_eeprom_t));
}
-void fsl_ddr_get_spd(ddr3_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;
- get_spd(&(ctrl_dimms_spd[i]), i2c_address);
- }
-}
-
-unsigned int fsl_ddr_get_mem_data_rate(void)
-{
- return get_ddr_freq(0);
-}
-
/*
* There are traditionally three board-specific SDRAM timing parameters
* which must be calculated based on the particular PCB artwork. These are:
* 1.) CPO (Read Capture Delay)
- * - TIMING_CFG_2 register
- * Source: Calculation based on board trace lengths and
- * chip-specific internal delays.
+ * - TIMING_CFG_2 register
+ * Source: Calculation based on board trace lengths and
+ * chip-specific internal delays.
* 2.) CLK_ADJUST (Clock and Addr/Cmd alignment control)
- * - DDR_SDRAM_CLK_CNTL register
- * Source: Signal Integrity Simulations
+ * - DDR_SDRAM_CLK_CNTL register
+ * Source: Signal Integrity Simulations
* 3.) 2T Timing on Addr/Ctl
- * - TIMING_CFG_2 register
- * Source: Signal Integrity Simulations
- * Usually only needed with heavy load/very high speed (>DDR2-800)
+ * - TIMING_CFG_2 register
+ * Source: Signal Integrity Simulations
+ * Usually only needed with heavy load/very high speed (>DDR2-800)
*
* ====== XPedite550x DDR3-800 read delay calculations ======
*
const board_specific_parameters_t board_specific_parameters[][20] = {
{
/* Controller 0 */
- {
+ {
/* DDR3-600/667 */
.datarate_mhz_low = 500,
.datarate_mhz_high = 750,
.clk_adjust = 5,
.cpo = 31,
},
- {
+ {
/* DDR3-800 */
.datarate_mhz_low = 750,
.datarate_mhz_high = 850,
popts->clk_adjust = pbsp->clk_adjust;
popts->cpo_override = pbsp->cpo;
popts->twoT_en = 0;
+ 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
popts->rtt_override = 1;
popts->rtt_override_value = 3;
}
-