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soc/mediatek/mt8192: Implement dram all channel calibration
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Signed-off-by: Huayang Duan <huayang.duan@mediatek.com>
Change-Id: I62cc654d5a6b861f72eec66e09d24483b993f0e4
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44715
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
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@pgeorgi
Huayang Duan authored and pgeorgi committed Jan 28, 2021
1 parent 602943f commit 27c9fcf
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297 changes: 297 additions & 0 deletions src/soc/mediatek/mt8192/dramc_pi_basic_api.c
View file
Expand Up @@ -4035,6 +4035,55 @@ static void dramc_mode_reg_init(const struct ddr_cali *cali)
dramc_set_broadcast(bc_bak);
}

static void move_dramc_delay(const struct ddr_cali *cali, reg_transfer *ui,
reg_transfer *mck, s8 shift_ui)
{
s32 sum;
u8 ui_offset = ui->offset, ui_width = 4, mck_offset = mck->offset, mck_width = 3;
u32 *ui_reg = ui->addr, *mck_reg = mck->addr;

u32 tmp_ui, tmp_mck, ui_mask, mck_mask;
u8 div_shift = get_mck2ui_div_shift(cali);

ui_mask = BIT(ui_width) - 1;
mck_mask = BIT(mck_width) - 1;
tmp_ui = ((read32(ui_reg) >> ui_offset) & ui_mask) & ~(1 << div_shift);
tmp_mck = (read32(mck_reg) >> mck_offset) & mck_mask;

sum = (tmp_mck << div_shift) + tmp_ui + shift_ui;

if (sum < 0) {
tmp_ui = 0;
tmp_mck = 0;
} else {
tmp_mck = sum >> div_shift;
tmp_ui = sum - (tmp_mck << div_shift);
}

clrsetbits32(ui_reg, ui_mask << ui_offset, tmp_ui << ui_offset);
clrsetbits32(mck_reg, mck_mask << mck_offset, tmp_mck << mck_offset);
}

void shift_dq_ui(const struct ddr_cali *cali, u8 rk, s8 shift_ui)
{
u8 chn = cali->chn;
reg_transfer ui_regs[] = {
{&ch[chn].ao.shu_rk[rk].shurk_selph_dq3, 0},
{&ch[chn].ao.shu_rk[rk].shurk_selph_dq3, 4},
{&ch[chn].ao.shu_rk[rk].shurk_selph_dq2, 0},
{&ch[chn].ao.shu_rk[rk].shurk_selph_dq2, 4}
};
reg_transfer mck_regs[] = {
{&ch[chn].ao.shu_rk[rk].shurk_selph_dq1, 0},
{&ch[chn].ao.shu_rk[rk].shurk_selph_dq1, 4},
{&ch[chn].ao.shu_rk[rk].shurk_selph_dq0, 0},
{&ch[chn].ao.shu_rk[rk].shurk_selph_dq0, 4}
};

for (int idx = 0; idx < ARRAY_SIZE(ui_regs); idx++)
move_dramc_delay(cali, &ui_regs[idx], &mck_regs[idx], shift_ui);
}

static void ddr_update_ac_timing(const struct ddr_cali *cali)
{
u8 table_idx;
Expand Down Expand Up @@ -4412,3 +4461,251 @@ void dfs_init_for_calibration(const struct ddr_cali *cali)
dramc_init(cali);
dramc_before_calibration(cali);
}

void tx_picg_setting(const struct ddr_cali *cali)
{
u32 dqs_oen_final, dq_oen_final;
u16 dqs_oen_2t[2], dqs_oen_05t[2], dqs_oen_delay[2];
u16 dq_oen_2t[2], dq_oen_05t[2], dq_oen_delay[2];
u16 comb_tx_sel[2];
u16 shift_dqs_div[2], shift_dq_div[2];
u16 comb_tx_picg_cnt;
u8 div_ratio;

comb_tx_picg_cnt = 3;
if (get_div_mode(cali) == DIV8_MODE) {
shift_dqs_div[0] = 10;
shift_dqs_div[1] = 6;
shift_dq_div[0] = 8;
shift_dq_div[1] = 4;
div_ratio = 3;
} else {
shift_dqs_div[0] = 2;
shift_dqs_div[1] = 0;
shift_dq_div[0] = 0;
shift_dq_div[1] = 0;
div_ratio = 2;
}

for (u8 chn = 0; chn < CHANNEL_MAX; chn++) {
struct dramc_ao_regs *dramc_ao = &ch[chn].ao;

dqs_oen_2t[0] = READ32_BITFIELD(&dramc_ao->shu_selph_dqs0,
SHU_SELPH_DQS0_TXDLY_OEN_DQS0);
dqs_oen_05t[0] = READ32_BITFIELD(&dramc_ao->shu_selph_dqs1,
SHU_SELPH_DQS1_DLY_OEN_DQS0);
dqs_oen_delay[0] = (dqs_oen_2t[0] << div_ratio) + dqs_oen_05t[0];
dqs_oen_2t[1] = READ32_BITFIELD(&dramc_ao->shu_selph_dqs0,
SHU_SELPH_DQS0_TXDLY_OEN_DQS1);
dqs_oen_05t[1] = READ32_BITFIELD(&dramc_ao->shu_selph_dqs1,
SHU_SELPH_DQS1_DLY_OEN_DQS1);
dqs_oen_delay[1] = (dqs_oen_2t[1] << div_ratio) + dqs_oen_05t[1];

dqs_oen_final = MIN(dqs_oen_delay[0], dqs_oen_delay[1]) + 1;

comb_tx_sel[0] = (dqs_oen_final > shift_dqs_div[0]) ?
((dqs_oen_final - shift_dqs_div[0]) >> div_ratio) : 0;

if (get_div_mode(cali) == DIV4_MODE)
comb_tx_sel[1] = 0;
else
comb_tx_sel[1] = (dqs_oen_final > shift_dqs_div[1]) ?
((dqs_oen_final - shift_dqs_div[1]) >> div_ratio) : 0;

SET32_BITFIELDS(&dramc_ao->shu_aphy_tx_picg_ctrl,
SHU_APHY_TX_PICG_CTRL_TX_DQS_SEL_P0, comb_tx_sel[0],
SHU_APHY_TX_PICG_CTRL_TX_DQS_SEL_P1, comb_tx_sel[1],
SHU_APHY_TX_PICG_CTRL_TX_PICG_CNT, comb_tx_picg_cnt);
for (int rk = RANK_0; rk < cali->support_ranks; rk++) {
dq_oen_2t[0] = READ32_BITFIELD(&dramc_ao->shu_rk[rk].shurk_selph_dq0,
SHURK_SELPH_DQ0_TXDLY_OEN_DQ0);
dq_oen_05t[0] = READ32_BITFIELD(&dramc_ao->shu_rk[rk].shurk_selph_dq2,
SHURK_SELPH_DQ2_DLY_OEN_DQ0);
dq_oen_delay[0] = (dq_oen_2t[0] << div_ratio) + dq_oen_05t[0];
dq_oen_2t[1] = READ32_BITFIELD(&dramc_ao->shu_rk[rk].shurk_selph_dq0,
SHURK_SELPH_DQ0_TXDLY_OEN_DQ1);
dq_oen_05t[1] = READ32_BITFIELD(&dramc_ao->shu_rk[rk].shurk_selph_dq2,
SHURK_SELPH_DQ2_DLY_OEN_DQ1);
dq_oen_delay[1] = (dq_oen_2t[1] << div_ratio) + dq_oen_05t[1];

dq_oen_final = MIN(dq_oen_delay[0], dq_oen_delay[1]) + 1;

comb_tx_sel[0] = (dq_oen_final > shift_dq_div[0]) ?
((dq_oen_final - shift_dq_div[0]) >> div_ratio) : 0;

if (get_div_mode(cali) == DIV4_MODE)
comb_tx_sel[1] = 0;
else
comb_tx_sel[1] = (dq_oen_final > shift_dq_div[1]) ?
((dq_oen_final - shift_dq_div[1]) >> div_ratio) : 0;

SET32_BITFIELDS(&dramc_ao->shu_rk[rk].shurk_aphy_tx_picg_ctrl,
SHURK_APHY_TX_PICG_CTRL_TX_DQ_RK_SEL_P0, comb_tx_sel[0],
SHURK_APHY_TX_PICG_CTRL_TX_DQ_RK_SEL_P1, comb_tx_sel[1]);
}
}
}

void xrtrtr_shu_setting(const struct ddr_cali *cali)
{
const dram_freq_grp freq_group = get_freq_group(cali);
u8 rk_sel_ui_minus = 0, rk_sel_mck_minus = 0;

if (freq_group == DDRFREQ_400)
rk_sel_mck_minus = 1;
else if (freq_group >= DDRFREQ_1600)
rk_sel_ui_minus = 2;

for (u8 chn = 0; chn < CHANNEL_MAX; chn++)
SET32_BITFIELDS(&ch[chn].phy_ao.shu_misc_rank_sel_stb,
SHU_MISC_RANK_SEL_STB_RANK_SEL_STB_MCK_MINUS, rk_sel_mck_minus,
SHU_MISC_RANK_SEL_STB_RANK_SEL_STB_UI_MINUS, rk_sel_ui_minus,
SHU_MISC_RANK_SEL_STB_RANK_SEL_STB_MCK_PLUS, 0x0,
SHU_MISC_RANK_SEL_STB_RANK_SEL_STB_UI_PLUS, 0x0,
SHU_MISC_RANK_SEL_STB_RANK_SEL_STB_PHASE_EN, 0x0,
SHU_MISC_RANK_SEL_STB_RANK_SEL_RXDLY_TRACK, 0x0,
SHU_MISC_RANK_SEL_STB_RANK_SEL_STB_TRACK, 0x1,
SHU_MISC_RANK_SEL_STB_RANK_SEL_STB_SERMODE, 0x0,
SHU_MISC_RANK_SEL_STB_RANK_SEL_STB_EN_B23, 0x0,
SHU_MISC_RANK_SEL_STB_RANK_SEL_STB_EN, 0x1);
}

void freq_jump_ratio_calculation(const struct ddr_cali *cali)
{
u32 src_freq, dst_freq, src_shu, dst_shu, jump_ratio_index;
u16 jump_ratio[DRAM_DFS_SHU_MAX] = {0};

jump_ratio_index = 0;
src_freq = get_frequency(cali);
src_shu = get_shu(cali);

if (get_freq_group_by_shu_save(src_shu) != DDRFREQ_400) {
for (dst_shu = DRAM_DFS_SHU0; dst_shu < DRAM_DFS_SHU_MAX; dst_shu++) {
dst_freq = get_frequency_by_shu(dst_shu);
jump_ratio[jump_ratio_index] =
DIV_ROUND_CLOSEST(dst_freq * 32, src_freq);

dramc_dbg("Jump ratio [%u]: %#x Freq %d -> %d, DDR%u -> DDR%u\n",
jump_ratio_index, jump_ratio[jump_ratio_index],
src_shu, dst_shu, src_freq << 1, dst_freq << 1);
jump_ratio_index++;
}
}

for (u8 chn = 0; chn < CHANNEL_MAX; chn++) {
SET32_BITFIELDS(&ch[chn].ao.shu_freq_ratio_set0,
SHU_FREQ_RATIO_SET0_TDQSCK_JUMP_RATIO0, jump_ratio[0],
SHU_FREQ_RATIO_SET0_TDQSCK_JUMP_RATIO1, jump_ratio[1],
SHU_FREQ_RATIO_SET0_TDQSCK_JUMP_RATIO2, jump_ratio[2],
SHU_FREQ_RATIO_SET0_TDQSCK_JUMP_RATIO3, jump_ratio[3]);
SET32_BITFIELDS(&ch[chn].ao.shu_freq_ratio_set1,
SHU_FREQ_RATIO_SET1_TDQSCK_JUMP_RATIO4, jump_ratio[4],
SHU_FREQ_RATIO_SET1_TDQSCK_JUMP_RATIO5, jump_ratio[5],
SHU_FREQ_RATIO_SET1_TDQSCK_JUMP_RATIO6, jump_ratio[6]);
}
}

void dramc_hmr4_presetting(const struct ddr_cali *cali)
{
for (u8 chn = CHANNEL_A; chn < CHANNEL_MAX; chn++) {
SET32_BITFIELDS(&ch[chn].ao.hmr4, HMR4_REFR_PERIOD_OPT, 1);
SET32_BITFIELDS(&ch[chn].ao.hmr4, HMR4_REFRCNT_OPT, 0);
SET32_BITFIELDS(&ch[chn].ao.shu_hmr4_dvfs_ctrl0,
SHU_HMR4_DVFS_CTRL0_REFRCNT, 0x80);

if (get_cbt_mode(cali) == CBT_BYTE_MODE1)
SET32_BITFIELDS(&ch[chn].ao.hmr4, HMR4_HMR4_BYTEMODE_EN, 1);
else
SET32_BITFIELDS(&ch[chn].ao.hmr4, HMR4_HMR4_BYTEMODE_EN, 0);

SET32_BITFIELDS(&ch[chn].ao.refctrl1, REFCTRL1_REFRATE_MON_CLR, 0);
SET32_BITFIELDS(&ch[chn].ao.refctrl1, REFCTRL1_REFRATE_MON_CLR, 1);
SET32_BITFIELDS(&ch[chn].ao.refctrl1, REFCTRL1_REFRATE_MON_CLR, 0);
}
}

void dramc_enable_perbank_refresh(bool en)
{
if (en) {
for (u8 chn = 0; chn < CHANNEL_MAX; chn++) {
SET32_BITFIELDS(&ch[chn].ao.refctrl0,
REFCTRL0_PBREF_BK_REFA_ENA, 1,
REFCTRL0_PBREF_BK_REFA_NUM, 2);
SET32_BITFIELDS(&ch[chn].ao.refctrl0,
REFCTRL0_KEEP_PBREF, 0,
REFCTRL0_KEEP_PBREF_OPT, 1);
SET32_BITFIELDS(&ch[chn].ao.refctrl1, REFCTRL1_REFPB2AB_IGZQCS, 1);
}
}

for (u8 chn = 0; chn < CHANNEL_MAX; chn++)
SET32_BITFIELDS(&ch[chn].ao.shu_conf0, SHU_CONF0_PBREFEN, en);
}

void dramc_modified_refresh_mode(void)
{
for (u8 chn = 0; chn < CHANNEL_MAX; chn++) {
SET32_BITFIELDS(&ch[chn].ao.refpend1,
REFPEND1_MPENDREFCNT_TH0, 2,
REFPEND1_MPENDREFCNT_TH1, 2,
REFPEND1_MPENDREFCNT_TH2, 4,
REFPEND1_MPENDREFCNT_TH3, 5,
REFPEND1_MPENDREFCNT_TH4, 5,
REFPEND1_MPENDREFCNT_TH5, 3,
REFPEND1_MPENDREFCNT_TH6, 3,
REFPEND1_MPENDREFCNT_TH7, 3);
SET32_BITFIELDS(&ch[chn].ao.refctrl1,
REFCTRL1_REFPEND_OPT1, 1,
REFCTRL1_REFPEND_OPT2, 1);
SET32_BITFIELDS(&ch[chn].ao.shu_ref0, SHU_REF0_MPENDREF_CNT, 4);
}
}

void dramc_cke_debounce(const struct ddr_cali *cali)
{
if (get_freq_group(cali) < DDRFREQ_2133)
return;

for (u8 chn = 0; chn < CHANNEL_MAX; chn++)
for (u8 rk = 0; rk < cali->support_ranks; rk++)
SET32_BITFIELDS(&ch[chn].ao.shu_rk[rk].shurk_cke_ctrl,
SHURK_CKE_CTRL_CKE_DBE_CNT, 15);
}

void dramc_hw_dqsosc(const struct ddr_cali *cali, u8 chn)
{
SET32_BITFIELDS(&ch[chn].ao.tx_freq_ratio_old_mode0,
TX_FREQ_RATIO_OLD_MODE0_SHUFFLE_LEVEL_MODE_SELECT, 1);
SET32_BITFIELDS(&ch[chn].ao.tx_tracking_set0,
TX_TRACKING_SET0_SHU_PRELOAD_TX_HW, 1,
TX_TRACKING_SET0_SHU_PRELOAD_TX_START, 0,
TX_TRACKING_SET0_SW_UP_TX_NOW_CASE, 0);

SET32_BITFIELDS(&ch[chn].ao.mpc_ctrl, MPC_CTRL_MPC_BLOCKALE_OPT, 1);
SET32_BITFIELDS(&ch[chn].phy_ao.misc_ctrl1, MISC_CTRL1_R_DMARPIDQ_SW, 0);
SET32_BITFIELDS(&ch[chn].ao.dcm_sub_ctrl, DCM_SUB_CTRL_SUBCLK_CTRL_TX_TRACKING, 1);
SET32_BITFIELDS(&ch[chn].ao.dqsoscr, DQSOSCR_ARUIDQ_SW, 1);
SET32_BITFIELDS(&ch[chn].ao.dqsoscr, DQSOSCR_DQSOSCRDIS, 0);
SET32_BITFIELDS(&ch[chn].ao.rk[0].rk_dqsosc, RK_DQSOSC_DQSOSCR_RK0EN, 1);
if (cali->support_ranks == DUAL_RANK_DDR)
SET32_BITFIELDS(&ch[chn].ao.rk[1].rk_dqsosc, RK_DQSOSC_DQSOSCR_RK0EN, 1);
SET32_BITFIELDS(&ch[chn].ao.tx_set0, TX_SET0_DRSCLR_RK0_EN, 1);
SET32_BITFIELDS(&ch[chn].ao.dqsoscr, DQSOSCR_DQSOSC_CALEN, 1);
}

void apply_write_dbi_power_improve(bool en)
{
for (u8 chn = 0; chn < CHANNEL_MAX; chn++)
SET32_BITFIELDS(&ch[chn].ao.dbiwr_protect,
DBIWR_PROTECT_DBIWR_OPT_B1, 0,
DBIWR_PROTECT_DBIWR_OPT_B0, 0,
DBIWR_PROTECT_DBIWR_PINMUX_EN, 0,
DBIWR_PROTECT_DBIWR_IMP_EN, en);
}

void dramc_write_dbi_onoff(u8 onoff)
{
for (u8 chn = 0; chn < CHANNEL_MAX; chn++)
SET32_BITFIELDS(&ch[chn].ao.shu_tx_set0, SHU_TX_SET0_DBIWR, onoff);
dramc_info("Dramc Write-DBI: %s\n", (onoff == DBI_ON) ? "on" : "off");
}
60 changes: 60 additions & 0 deletions src/soc/mediatek/mt8192/dramc_pi_main.c
View file
Expand Up @@ -6,6 +6,16 @@
#include <soc/pll_common.h>
#include <soc/regulator.h>

static void dramc_write_shift_mck_write_dbi(const struct ddr_cali *cali, s8 shift_value)
{
u8 div_shift;
s8 ui_move;

div_shift = get_mck2ui_div_shift(cali);
ui_move = shift_value * (1 << div_shift);
shift_dq_ui(cali, cali->rank, ui_move);
}

static void dramc_ac_timing_optimize(const struct ddr_cali *cali)
{
u8 rf_group, cab_id;
Expand Down Expand Up @@ -248,8 +258,57 @@ static void get_dram_info_after_cal(struct ddr_cali *cali)
cali->density = max_density;
}

static void dramc_calibration_single_channel(struct ddr_cali *cali, u8 chn)
{
cali->chn = chn;
SET32_BITFIELDS(&ch[chn].phy_ao.ca_cmd2,
CA_CMD2_RG_TX_ARCMD_OE_DIS_CA, 0,
CA_CMD2_RG_TX_ARCA_OE_TIE_SEL_CA, 1,
CA_CMD2_RG_TX_ARCA_OE_TIE_EN_CA, 0xff);
}

static void dramc_calibration_all_channels(struct ddr_cali *cali)
{
u8 chn_bak, rank_bak;
const dbi_mode w_dbi = get_write_dbi(cali);

for (u8 chn = 0; chn < CHANNEL_MAX; chn++)
SET32_BITFIELDS(&ch[chn].phy_ao.ca_cmd2,
CA_CMD2_RG_TX_ARCMD_OE_DIS_CA, 1,
CA_CMD2_RG_TX_ARCA_OE_TIE_SEL_CA, 0,
CA_CMD2_RG_TX_ARCA_OE_TIE_EN_CA, 0xff);

for (u8 chn = 0; chn < CHANNEL_MAX; chn++)
dramc_calibration_single_channel(cali, chn);

if (w_dbi == DBI_ON) {
chn_bak = cali->chn;
rank_bak = cali->rank;
for (u8 chn = 0; chn < CHANNEL_MAX; chn++)
for (u8 rank = RANK_0; rank < RANK_MAX; rank++) {
cali->chn = chn;
cali->rank = rank;
dramc_write_shift_mck_write_dbi(cali, -1);
}
cali->chn = chn_bak;
cali->rank = rank_bak;
apply_write_dbi_power_improve(true);
}

dramc_write_dbi_onoff(w_dbi);

tx_picg_setting(cali);
if (cali->support_ranks == DUAL_RANK_DDR)
xrtrtr_shu_setting(cali);
freq_jump_ratio_calculation(cali);

dramc_hmr4_presetting(cali);
dramc_enable_perbank_refresh(true);
dramc_modified_refresh_mode();
dramc_cke_debounce(cali);

for (u8 chn = 0; chn < CHANNEL_MAX; chn++)
dramc_hw_dqsosc(cali, chn);
}

static void mem_pll_init(void)
Expand Down Expand Up @@ -328,5 +387,6 @@ void init_dram(const struct dramc_data *dparam)
dramc_load_shuffle_to_dramc(cali.shu, DRAM_DFS_SHU1);

first_freq_k = false;
dramc_info("Calibration of data rate %u finished\n", get_frequency(&cali) * 2);
}
}

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