diff options
| author | Huayang Duan <huayang.duan@mediatek.com> | 2020-03-05 16:18:16 +0800 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2020-03-18 16:47:01 +0000 |
| commit | c4917775fd310b93681c172d2e6b5a871b3dd36d (patch) | |
| tree | df150b5fe17d8c276cf12a719d9f298de3cdb690 /src/soc/mediatek | |
| parent | 00cc4c9455c0e7d4399676f5e1aa7490e6ea896d (diff) | |
soc/mediatek/mt8183: Improve the AC timing of DRAMC
Set more AC timing items to make the system more stable.
BUG=none
BRANCH=kukui
TEST=Boots correctly on Kukui
Change-Id: Ibd003582a3ffab1ae91f6378651c2c9e585c4676
Signed-off-by: Huayang Duan <huayang.duan@mediatek.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39314
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Diffstat (limited to 'src/soc/mediatek')
| -rw-r--r-- | src/soc/mediatek/mt8183/emi.c | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/src/soc/mediatek/mt8183/emi.c b/src/soc/mediatek/mt8183/emi.c index 5fc032f30b..85a75befdd 100644 --- a/src/soc/mediatek/mt8183/emi.c +++ b/src/soc/mediatek/mt8183/emi.c @@ -63,6 +63,8 @@ const u8 phy_mapping[CHANNEL_MAX][16] = { struct optimize_ac_time { u8 rfc; u8 rfc_05t; + u8 rfc_pb; + u8 rfrc_pb05t; u16 tx_ref_cnt; }; @@ -332,19 +334,27 @@ static void dramc_init_pre_settings(void) static void dramc_ac_timing_optimize(u8 freq_group) { struct optimize_ac_time rf_cab_opt[LP4X_DDRFREQ_MAX] = { - [LP4X_DDR1600] = {.rfc = 44, .rfc_05t = 0, .tx_ref_cnt = 62}, - [LP4X_DDR2400] = {.rfc = 72, .rfc_05t = 0, .tx_ref_cnt = 91}, - [LP4X_DDR3200] = {.rfc = 100, .rfc_05t = 0, .tx_ref_cnt = 119}, - [LP4X_DDR3600] = {.rfc = 118, .rfc_05t = 1, .tx_ref_cnt = 138}, + [LP4X_DDR1600] = {.rfc = 44, .rfc_05t = 0, .rfc_pb = 16, + .rfrc_pb05t = 0, .tx_ref_cnt = 62}, + [LP4X_DDR2400] = {.rfc = 72, .rfc_05t = 0, .rfc_pb = 30, + .rfrc_pb05t = 0, .tx_ref_cnt = 91}, + [LP4X_DDR3200] = {.rfc = 100, .rfc_05t = 0, .rfc_pb = 44, + .rfrc_pb05t = 0, .tx_ref_cnt = 119}, + [LP4X_DDR3600] = {.rfc = 118, .rfc_05t = 1, .rfc_pb = 53, + .rfrc_pb05t = 1, .tx_ref_cnt = 138}, }; for (size_t chn = 0; chn < CHANNEL_MAX; chn++) { clrsetbits32(&ch[chn].ao.shu[0].actim[3], 0xff << 16, rf_cab_opt[freq_group].rfc << 16); - clrbits32(&ch[chn].ao.shu[0].ac_time_05t, - rf_cab_opt[freq_group].rfc_05t << 2); + clrsetbits32(&ch[chn].ao.shu[0].ac_time_05t, + 0x1 << 2, rf_cab_opt[freq_group].rfc_05t << 2); clrsetbits32(&ch[chn].ao.shu[0].actim[4], 0x3ff << 0, rf_cab_opt[freq_group].tx_ref_cnt << 0); + clrsetbits32(&ch[chn].ao.shu[0].actim[3], + 0xff << 0, rf_cab_opt[freq_group].rfc_pb << 0); + clrsetbits32(&ch[chn].ao.shu[0].ac_time_05t, + 0x1 << 1, rf_cab_opt[freq_group].rfrc_pb05t << 1); } } |