diff options
| -rw-r--r-- | src/soc/mediatek/mt8183/dramc_pi_calibration_api.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/src/soc/mediatek/mt8183/dramc_pi_calibration_api.c b/src/soc/mediatek/mt8183/dramc_pi_calibration_api.c index 92117ef5ee..1db0514778 100644 --- a/src/soc/mediatek/mt8183/dramc_pi_calibration_api.c +++ b/src/soc/mediatek/mt8183/dramc_pi_calibration_api.c @@ -1624,6 +1624,75 @@ static u8 dramc_window_perbit_cal(u8 chn, u8 rank, return 0; } +static void dle_factor_handler(u8 chn, u8 val) +{ + val = MAX(val, 2); + clrsetbits_le32(&ch[chn].ao.shu[0].conf[1], + SHU_CONF1_DATLAT_MASK | SHU_CONF1_DATLAT_DSEL_MASK | + SHU_CONF1_DATLAT_DSEL_PHY_MASK, + (val << SHU_CONF1_DATLAT_SHIFT) | + ((val - 2) << SHU_CONF1_DATLAT_DSEL_SHIFT) | + ((val - 2) << SHU_CONF1_DATLAT_DSEL_PHY_SHIFT)); + dram_phy_reset(chn); +} + +static u8 dramc_rx_datlat_cal(u8 chn, u8 rank) +{ + s32 datlat, first = -1, sum = 0, best_step; + + best_step = read32(&ch[chn].ao.shu[0].conf[1]) & SHU_CONF1_DATLAT_MASK; + + dramc_dbg("[DATLAT] start. CH%d RK%d DATLAT Default: %2x\n", + chn, rank, best_step); + + u32 dummy_rd_backup = read32(&ch[chn].ao.dummy_rd); + dramc_engine2_init(chn, rank, 0x400, false); + + for (datlat = 12; datlat < DATLAT_TAP_NUMBER; datlat++) { + dle_factor_handler(chn, datlat); + + u32 err = dramc_engine2_run(chn, TE_OP_WRITE_READ_CHECK); + + if (err != 0 && first != -1) + break; + + if (sum >= 4) + break; + + if (err == 0) { + if (first == -1) + first = datlat; + sum++; + } + + dramc_dbg("Datlat=%2d, err_value=0x%8x, sum=%d\n", + datlat, err, sum); + } + + dramc_engine2_end(chn); + write32(&ch[chn].ao.dummy_rd, dummy_rd_backup); + + best_step = first + (sum >> 1); + dramc_dbg("First_step=%d, total pass=%d, best_step=%d\n", + first, sum, best_step); + + assert(sum != 0); + + dle_factor_handler(chn, best_step); + + clrsetbits_le32(&ch[chn].ao.padctrl, PADCTRL_DQIENQKEND_MASK, + (0x1 << PADCTRL_DQIENQKEND_SHIFT) | + (0x1 << PADCTRL_DQIENLATEBEGIN_SHIFT)); + + return (u8) best_step; +} + +static void dramc_dual_rank_rx_datlat_cal(u8 chn, u8 datlat0, u8 datlat1) +{ + u8 final_datlat = MAX(datlat0, datlat1); + dle_factor_handler(chn, final_datlat); +} + static void dramc_rx_dqs_gating_post_process(u8 chn) { u8 rank_rx_dvs, dqsinctl; @@ -1720,6 +1789,7 @@ static void dramc_rx_dqs_gating_post_process(u8 chn) void dramc_calibrate_all_channels(const struct sdram_params *pams) { + u8 rx_datlat[RANK_MAX] = {0}; for (u8 chn = 0; chn < CHANNEL_MAX; chn++) { for (u8 rk = RANK_0; rk < RANK_MAX; rk++) { dramc_show("Start K ch:%d, rank:%d\n", chn, rk); @@ -1731,9 +1801,11 @@ void dramc_calibrate_all_channels(const struct sdram_params *pams) dramc_window_perbit_cal(chn, rk, RX_WIN_RD_DQC, pams); dramc_window_perbit_cal(chn, rk, TX_WIN_DQ_DQM, pams); dramc_window_perbit_cal(chn, rk, TX_WIN_DQ_ONLY, pams); + rx_datlat[rk] = dramc_rx_datlat_cal(chn, rk); dramc_window_perbit_cal(chn, rk, RX_WIN_TEST_ENG, pams); } dramc_rx_dqs_gating_post_process(chn); + dramc_dual_rank_rx_datlat_cal(chn, rx_datlat[0], rx_datlat[1]); } } |