diff options
Diffstat (limited to 'src/northbridge/amd/amdmct/mct_ddr3/mctdqs_d.c')
| -rw-r--r-- | src/northbridge/amd/amdmct/mct_ddr3/mctdqs_d.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/src/northbridge/amd/amdmct/mct_ddr3/mctdqs_d.c b/src/northbridge/amd/amdmct/mct_ddr3/mctdqs_d.c index 3f4f1bf01d..d34b2dc2ba 100644 --- a/src/northbridge/amd/amdmct/mct_ddr3/mctdqs_d.c +++ b/src/northbridge/amd/amdmct/mct_ddr3/mctdqs_d.c @@ -1252,11 +1252,15 @@ void write_dram_dqs_training_pattern_fam15(struct MCTStatStruc *pMCTstat, stop_dram_dqs_training_pattern_fam15(pMCTstat, pDCTstat, dct, Receiver); } +#define LANE_DIFF 1 + /* DQS Position Training * Algorithm detailed in the Fam15h BKDG Rev. 3.14 section 2.10.5.8.4 */ static uint8_t TrainDQSRdWrPos_D_Fam15(struct MCTStatStruc *pMCTstat, - struct DCTStatStruc *pDCTstat, uint8_t dct, uint8_t receiver_start, uint8_t receiver_end, uint8_t lane_start, uint8_t lane_end) + struct DCTStatStruc *pDCTstat, + uint8_t dct, uint8_t receiver_start, + uint8_t receiver_end, uint8_t lane_start) { uint8_t dimm; uint8_t lane; @@ -1276,7 +1280,8 @@ static uint8_t TrainDQSRdWrPos_D_Fam15(struct MCTStatStruc *pMCTstat, uint16_t current_read_dqs_delay[MAX_BYTE_LANES]; uint16_t current_write_dqs_delay[MAX_BYTE_LANES]; uint8_t passing_dqs_delay_found[MAX_BYTE_LANES]; - uint8_t dqs_results_array[2][(lane_end - lane_start)][32][48]; /* [rank][lane][write step][read step + 16] */ + /* [rank][lane][write step][read step + 16] */ + uint8_t dqs_results_array[2][LANE_DIFF][32][48]; uint8_t last_pos = 0; uint8_t cur_count = 0; @@ -1286,6 +1291,8 @@ static uint8_t TrainDQSRdWrPos_D_Fam15(struct MCTStatStruc *pMCTstat, uint32_t index_reg = 0x98; uint32_t dev = pDCTstat->dev_dct; + uint8_t lane_end = lane_start + LANE_DIFF; + uint8_t lane_count; lane_count = get_available_lane_count(pMCTstat, pDCTstat); @@ -1734,7 +1741,10 @@ static void TrainDQSReceiverEnCyc_D_Fam15(struct MCTStatStruc *pMCTstat, Calc_SetMaxRdLatency_D_Fam15(pMCTstat, pDCTstat, dct, 0); /* 2.10.5.8.3 (4 B) */ - dqs_results_array[current_phy_phase_delay[lane]] = TrainDQSRdWrPos_D_Fam15(pMCTstat, pDCTstat, dct, Receiver, Receiver + 2, lane, lane + 1); + dqs_results_array[current_phy_phase_delay[lane]] = + TrainDQSRdWrPos_D_Fam15(pMCTstat, pDCTstat, dct, + Receiver, Receiver + 2, + lane); if (dqs_results_array[current_phy_phase_delay[lane]]) lane_success_count++; @@ -1790,7 +1800,9 @@ static void TrainDQSReceiverEnCyc_D_Fam15(struct MCTStatStruc *pMCTstat, /* Update hardware registers with final values */ write_dqs_receiver_enable_control_registers(current_phy_phase_delay, dev, dct, dimm, index_reg); - TrainDQSRdWrPos_D_Fam15(pMCTstat, pDCTstat, dct, Receiver, Receiver + 2, lane, lane + 1); + TrainDQSRdWrPos_D_Fam15(pMCTstat, pDCTstat, dct, + Receiver, Receiver + 2, + lane); break; } prev = dqs_results_array[current_phy_phase_delay[lane]]; |