diff options
| author | Huayang Duan <huayang.duan@mediatek.com> | 2019-11-18 09:45:22 +0800 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2019-12-12 15:10:55 +0000 |
| commit | 83b2740ba7d9503100798a0771818f0e58c46c53 (patch) | |
| tree | 0847d7a8d585b5cb119c73d61587f0bfec9eba20 /src | |
| parent | 4240e3298001f978e37477be86875d3bb6e19712 (diff) | |
| download | coreboot-83b2740ba7d9503100798a0771818f0e58c46c53.tar.xz | |
soc/mediatek/mt8183: skip fast calibration for high frequency of TX RX window
For low frequency (e.g., 1600 or 2400 Mbps) we can do fast
calibration for TX and RX window. However, for high frequency
(e.g., 3200 or 3600 Mbps) a full calibration is needed.
BUG=b:80501386,b:142358843
BRANCH=kukui
TEST=Boots correctly on Kukui
Signed-off-by: Huayang Duan <huayang.duan@mediatek.com>
Change-Id: I00d563ece4cf91ef5e8e12b6cf7f777849375a24
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36921
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src')
| -rw-r--r-- | src/soc/mediatek/mt8183/dramc_pi_calibration_api.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/src/soc/mediatek/mt8183/dramc_pi_calibration_api.c b/src/soc/mediatek/mt8183/dramc_pi_calibration_api.c index cd9f328ae6..8c17d84df0 100644 --- a/src/soc/mediatek/mt8183/dramc_pi_calibration_api.c +++ b/src/soc/mediatek/mt8183/dramc_pi_calibration_api.c @@ -1788,8 +1788,9 @@ static u8 dramc_window_perbit_cal(u8 chn, u8 rank, u8 freq_group, u8 fsp = get_freq_fsq(freq_group); u8 vref_range = !fsp; - bool bypass_tx = !fsp; + bool bypass_tx_rx = !fsp; + dramc_dbg("bypass TX RX window: %s\n", bypass_tx_rx ? "Yes" : "No"); dramc_get_vref_prop(rank, type, fsp, &vref_scan_enable, &vref_begin, &vref_end); dramc_get_dly_range(chn, rank, type, freq_group, dq_precal_result, @@ -1826,9 +1827,9 @@ static u8 dramc_window_perbit_cal(u8 chn, u8 rank, u8 freq_group, vref_step = 2; } - if (fast_calib && bypass_tx && + if (fast_calib && bypass_tx_rx && (type == TX_WIN_DQ_ONLY || type == TX_WIN_DQ_DQM)) { - dramc_set_tx_best_dly(chn, rank, true, vref_dly.perbit_dly, + dramc_set_tx_best_dly(chn, rank, bypass_tx_rx, vref_dly.perbit_dly, type, freq_group, dq_precal_result, dly_cell_unit, params, fast_calib); @@ -1872,7 +1873,7 @@ static u8 dramc_window_perbit_cal(u8 chn, u8 rank, u8 freq_group, RX_DQ, FIRST_DQ_DELAY); } - if (fast_calib && + if (fast_calib && bypass_tx_rx && (type == RX_WIN_RD_DQC || type == RX_WIN_TEST_ENG)) { dramc_dbg("bypass RX params\n"); for (size_t bit = 0; bit < DQ_DATA_WIDTH; bit++) { |