drivers/memory/tegra/tegra210-emc-cc-r21021.c:1035:44: warning: Logical conjunction always evaluates to false: !opt_cc_short_zcal && opt_short_zcal. [incorrectLogicOperator]

kernel test robot
2021-11-14T03:50:32Z

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: ccfff0a2bd2a30de130b5623d242ddecd0272bc2
commit: 56ebc9b0d77e0406aba2d900c82e79204cc7dc32 memory: tegra: Enable compile testing for all drivers
date: 5 months ago
compiler: or1k-linux-gcc (GCC) 11.2.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

cppcheck warnings: (new ones prefixed by >>)
>> drivers/memory/tegra/tegra210-emc-cc-r21021.c:1035:44: warning: Logical conjunction always evaluates to false: !opt_cc_short_zcal && opt_short_zcal. [incorrectLogicOperator]
opt_zcal_en_cc && !opt_cc_short_zcal &&
^
drivers/memory/tegra/tegra210-emc-cc-r21021.c:1043:26: warning: Logical conjunction always evaluates to false: !opt_cc_short_zcal && opt_short_zcal. [incorrectLogicOperator]
!opt_cc_short_zcal && opt_short_zcal) {
^
>> drivers/memory/tegra/tegra210-emc-cc-r21021.c:1688:22: warning: Logical conjunction always evaluates to false: !opt_short_zcal && opt_cc_short_zcal. [incorrectLogicOperator]
!opt_short_zcal && opt_cc_short_zcal) {
^

vim +1035 drivers/memory/tegra/tegra210-emc-cc-r21021.c

9b9d8632f51f360 Joseph Lo 2019-05-29 581
9b9d8632f51f360 Joseph Lo 2019-05-29 582 /*
9b9d8632f51f360 Joseph Lo 2019-05-29 583 * Do the clock change sequence.
9b9d8632f51f360 Joseph Lo 2019-05-29 584 */
9b9d8632f51f360 Joseph Lo 2019-05-29 585 static void tegra210_emc_r21021_set_clock(struct tegra210_emc *emc, u32 clksrc)
9b9d8632f51f360 Joseph Lo 2019-05-29 586 {
9b9d8632f51f360 Joseph Lo 2019-05-29 587 /* state variables */
9b9d8632f51f360 Joseph Lo 2019-05-29 588 static bool fsp_for_next_freq;
9b9d8632f51f360 Joseph Lo 2019-05-29 589 /* constant configuration parameters */
9b9d8632f51f360 Joseph Lo 2019-05-29 590 const bool save_restore_clkstop_pd = true;
9b9d8632f51f360 Joseph Lo 2019-05-29 591 const u32 zqcal_before_cc_cutoff = 2400;
9b9d8632f51f360 Joseph Lo 2019-05-29 592 const bool cya_allow_ref_cc = false;
9b9d8632f51f360 Joseph Lo 2019-05-29 593 const bool cya_issue_pc_ref = false;
9b9d8632f51f360 Joseph Lo 2019-05-29 594 const bool opt_cc_short_zcal = true;
9b9d8632f51f360 Joseph Lo 2019-05-29 595 const bool ref_b4_sref_en = false;
9b9d8632f51f360 Joseph Lo 2019-05-29 596 const u32 tZQCAL_lpddr4 = 1000000;
9b9d8632f51f360 Joseph Lo 2019-05-29 597 const bool opt_short_zcal = true;
9b9d8632f51f360 Joseph Lo 2019-05-29 598 const bool opt_do_sw_qrst = true;
9b9d8632f51f360 Joseph Lo 2019-05-29 599 const u32 opt_dvfs_mode = MAN_SR;
9b9d8632f51f360 Joseph Lo 2019-05-29 600 /*
9b9d8632f51f360 Joseph Lo 2019-05-29 601 * This is the timing table for the source frequency. It does _not_
9b9d8632f51f360 Joseph Lo 2019-05-29 602 * necessarily correspond to the actual timing values in the EMC at the
9b9d8632f51f360 Joseph Lo 2019-05-29 603 * moment. If the boot BCT differs from the table then this can happen.
9b9d8632f51f360 Joseph Lo 2019-05-29 604 * However, we need it for accessing the dram_timings (which are not
9b9d8632f51f360 Joseph Lo 2019-05-29 605 * really registers) array for the current frequency.
9b9d8632f51f360 Joseph Lo 2019-05-29 606 */
9b9d8632f51f360 Joseph Lo 2019-05-29 607 struct tegra210_emc_timing *fake, *last = emc->last, *next = emc->next;
9b9d8632f51f360 Joseph Lo 2019-05-29 608 u32 tRTM, RP_war, R2P_war, TRPab_war, deltaTWATM, W2P_war, tRPST;
9b9d8632f51f360 Joseph Lo 2019-05-29 609 u32 mr13_flip_fspwr, mr13_flip_fspop, ramp_up_wait, ramp_down_wait;
9b9d8632f51f360 Joseph Lo 2019-05-29 610 u32 zq_wait_long, zq_latch_dvfs_wait_time, tZQCAL_lpddr4_fc_adj;
9b9d8632f51f360 Joseph Lo 2019-05-29 611 u32 emc_auto_cal_config, auto_cal_en, emc_cfg, emc_sel_dpd_ctrl;
9b9d8632f51f360 Joseph Lo 2019-05-29 612 u32 tFC_lpddr4 = 1000 * next->dram_timings[T_FC_LPDDR4];
9b9d8632f51f360 Joseph Lo 2019-05-29 613 u32 bg_reg_mode_change, enable_bglp_reg, enable_bg_reg;
9b9d8632f51f360 Joseph Lo 2019-05-29 614 bool opt_zcal_en_cc = false, is_lpddr3 = false;
9b9d8632f51f360 Joseph Lo 2019-05-29 615 bool compensate_trimmer_applicable = false;
9b9d8632f51f360 Joseph Lo 2019-05-29 616 u32 emc_dbg, emc_cfg_pipe_clk, emc_pin;
9b9d8632f51f360 Joseph Lo 2019-05-29 617 u32 src_clk_period, dst_clk_period; /* in picoseconds */
9b9d8632f51f360 Joseph Lo 2019-05-29 618 bool shared_zq_resistor = false;
9b9d8632f51f360 Joseph Lo 2019-05-29 619 u32 value, dram_type;
9b9d8632f51f360 Joseph Lo 2019-05-29 620 u32 opt_dll_mode = 0;
9b9d8632f51f360 Joseph Lo 2019-05-29 621 unsigned long delay;
9b9d8632f51f360 Joseph Lo 2019-05-29 622 unsigned int i;
9b9d8632f51f360 Joseph Lo 2019-05-29 623
9b9d8632f51f360 Joseph Lo 2019-05-29 624 emc_dbg(emc, INFO, "Running clock change.\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 625
9b9d8632f51f360 Joseph Lo 2019-05-29 626 /* XXX fake == last */
9b9d8632f51f360 Joseph Lo 2019-05-29 627 fake = tegra210_emc_find_timing(emc, last->rate * 1000UL);
9b9d8632f51f360 Joseph Lo 2019-05-29 628 fsp_for_next_freq = !fsp_for_next_freq;
9b9d8632f51f360 Joseph Lo 2019-05-29 629
9b9d8632f51f360 Joseph Lo 2019-05-29 630 value = emc_readl(emc, EMC_FBIO_CFG5) & EMC_FBIO_CFG5_DRAM_TYPE_MASK;
9b9d8632f51f360 Joseph Lo 2019-05-29 631 dram_type = value >> EMC_FBIO_CFG5_DRAM_TYPE_SHIFT;
9b9d8632f51f360 Joseph Lo 2019-05-29 632
9b9d8632f51f360 Joseph Lo 2019-05-29 633 if (last->burst_regs[EMC_ZCAL_WAIT_CNT_INDEX] & BIT(31))
9b9d8632f51f360 Joseph Lo 2019-05-29 634 shared_zq_resistor = true;
9b9d8632f51f360 Joseph Lo 2019-05-29 635
9b9d8632f51f360 Joseph Lo 2019-05-29 636 if ((next->burst_regs[EMC_ZCAL_INTERVAL_INDEX] != 0 &&
9b9d8632f51f360 Joseph Lo 2019-05-29 637 last->burst_regs[EMC_ZCAL_INTERVAL_INDEX] == 0) ||
9b9d8632f51f360 Joseph Lo 2019-05-29 638 dram_type == DRAM_TYPE_LPDDR4)
9b9d8632f51f360 Joseph Lo 2019-05-29 639 opt_zcal_en_cc = true;
9b9d8632f51f360 Joseph Lo 2019-05-29 640
9b9d8632f51f360 Joseph Lo 2019-05-29 641 if (dram_type == DRAM_TYPE_DDR3)
9b9d8632f51f360 Joseph Lo 2019-05-29 642 opt_dll_mode = tegra210_emc_get_dll_state(next);
9b9d8632f51f360 Joseph Lo 2019-05-29 643
9b9d8632f51f360 Joseph Lo 2019-05-29 644 if ((next->burst_regs[EMC_FBIO_CFG5_INDEX] & BIT(25)) &&
9b9d8632f51f360 Joseph Lo 2019-05-29 645 (dram_type == DRAM_TYPE_LPDDR2))
9b9d8632f51f360 Joseph Lo 2019-05-29 646 is_lpddr3 = true;
9b9d8632f51f360 Joseph Lo 2019-05-29 647
9b9d8632f51f360 Joseph Lo 2019-05-29 648 emc_readl(emc, EMC_CFG);
9b9d8632f51f360 Joseph Lo 2019-05-29 649 emc_readl(emc, EMC_AUTO_CAL_CONFIG);
9b9d8632f51f360 Joseph Lo 2019-05-29 650
9b9d8632f51f360 Joseph Lo 2019-05-29 651 src_clk_period = 1000000000 / last->rate;
9b9d8632f51f360 Joseph Lo 2019-05-29 652 dst_clk_period = 1000000000 / next->rate;
9b9d8632f51f360 Joseph Lo 2019-05-29 653
9b9d8632f51f360 Joseph Lo 2019-05-29 654 if (dst_clk_period <= zqcal_before_cc_cutoff)
9b9d8632f51f360 Joseph Lo 2019-05-29 655 tZQCAL_lpddr4_fc_adj = tZQCAL_lpddr4 - tFC_lpddr4;
9b9d8632f51f360 Joseph Lo 2019-05-29 656 else
9b9d8632f51f360 Joseph Lo 2019-05-29 657 tZQCAL_lpddr4_fc_adj = tZQCAL_lpddr4;
9b9d8632f51f360 Joseph Lo 2019-05-29 658
9b9d8632f51f360 Joseph Lo 2019-05-29 659 tZQCAL_lpddr4_fc_adj /= dst_clk_period;
9b9d8632f51f360 Joseph Lo 2019-05-29 660
9b9d8632f51f360 Joseph Lo 2019-05-29 661 emc_dbg = emc_readl(emc, EMC_DBG);
9b9d8632f51f360 Joseph Lo 2019-05-29 662 emc_pin = emc_readl(emc, EMC_PIN);
9b9d8632f51f360 Joseph Lo 2019-05-29 663 emc_cfg_pipe_clk = emc_readl(emc, EMC_CFG_PIPE_CLK);
9b9d8632f51f360 Joseph Lo 2019-05-29 664
9b9d8632f51f360 Joseph Lo 2019-05-29 665 emc_cfg = next->burst_regs[EMC_CFG_INDEX];
9b9d8632f51f360 Joseph Lo 2019-05-29 666 emc_cfg &= ~(EMC_CFG_DYN_SELF_REF | EMC_CFG_DRAM_ACPD |
9b9d8632f51f360 Joseph Lo 2019-05-29 667 EMC_CFG_DRAM_CLKSTOP_SR | EMC_CFG_DRAM_CLKSTOP_PD);
9b9d8632f51f360 Joseph Lo 2019-05-29 668 emc_sel_dpd_ctrl = next->emc_sel_dpd_ctrl;
9b9d8632f51f360 Joseph Lo 2019-05-29 669 emc_sel_dpd_ctrl &= ~(EMC_SEL_DPD_CTRL_CLK_SEL_DPD_EN |
9b9d8632f51f360 Joseph Lo 2019-05-29 670 EMC_SEL_DPD_CTRL_CA_SEL_DPD_EN |
9b9d8632f51f360 Joseph Lo 2019-05-29 671 EMC_SEL_DPD_CTRL_RESET_SEL_DPD_EN |
9b9d8632f51f360 Joseph Lo 2019-05-29 672 EMC_SEL_DPD_CTRL_ODT_SEL_DPD_EN |
9b9d8632f51f360 Joseph Lo 2019-05-29 673 EMC_SEL_DPD_CTRL_DATA_SEL_DPD_EN);
9b9d8632f51f360 Joseph Lo 2019-05-29 674
9b9d8632f51f360 Joseph Lo 2019-05-29 675 emc_dbg(emc, INFO, "Clock change version: %d\n",
9b9d8632f51f360 Joseph Lo 2019-05-29 676 DVFS_CLOCK_CHANGE_VERSION);
9b9d8632f51f360 Joseph Lo 2019-05-29 677 emc_dbg(emc, INFO, "DRAM type = %d\n", dram_type);
9b9d8632f51f360 Joseph Lo 2019-05-29 678 emc_dbg(emc, INFO, "DRAM dev #: %u\n", emc->num_devices);
9b9d8632f51f360 Joseph Lo 2019-05-29 679 emc_dbg(emc, INFO, "Next EMC clksrc: 0x%08x\n", clksrc);
9b9d8632f51f360 Joseph Lo 2019-05-29 680 emc_dbg(emc, INFO, "DLL clksrc: 0x%08x\n", next->dll_clk_src);
9b9d8632f51f360 Joseph Lo 2019-05-29 681 emc_dbg(emc, INFO, "last rate: %u, next rate %u\n", last->rate,
9b9d8632f51f360 Joseph Lo 2019-05-29 682 next->rate);
9b9d8632f51f360 Joseph Lo 2019-05-29 683 emc_dbg(emc, INFO, "last period: %u, next period: %u\n",
9b9d8632f51f360 Joseph Lo 2019-05-29 684 src_clk_period, dst_clk_period);
9b9d8632f51f360 Joseph Lo 2019-05-29 685 emc_dbg(emc, INFO, " shared_zq_resistor: %d\n", !!shared_zq_resistor);
9b9d8632f51f360 Joseph Lo 2019-05-29 686 emc_dbg(emc, INFO, " num_channels: %u\n", emc->num_channels);
9b9d8632f51f360 Joseph Lo 2019-05-29 687 emc_dbg(emc, INFO, " opt_dll_mode: %d\n", opt_dll_mode);
9b9d8632f51f360 Joseph Lo 2019-05-29 688
9b9d8632f51f360 Joseph Lo 2019-05-29 689 /*
9b9d8632f51f360 Joseph Lo 2019-05-29 690 * Step 1:
9b9d8632f51f360 Joseph Lo 2019-05-29 691 * Pre DVFS SW sequence.
9b9d8632f51f360 Joseph Lo 2019-05-29 692 */
9b9d8632f51f360 Joseph Lo 2019-05-29 693 emc_dbg(emc, STEPS, "Step 1\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 694 emc_dbg(emc, STEPS, "Step 1.1: Disable DLL temporarily.\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 695
9b9d8632f51f360 Joseph Lo 2019-05-29 696 value = emc_readl(emc, EMC_CFG_DIG_DLL);
9b9d8632f51f360 Joseph Lo 2019-05-29 697 value &= ~EMC_CFG_DIG_DLL_CFG_DLL_EN;
9b9d8632f51f360 Joseph Lo 2019-05-29 698 emc_writel(emc, value, EMC_CFG_DIG_DLL);
9b9d8632f51f360 Joseph Lo 2019-05-29 699
9b9d8632f51f360 Joseph Lo 2019-05-29 700 tegra210_emc_timing_update(emc);
9b9d8632f51f360 Joseph Lo 2019-05-29 701
9b9d8632f51f360 Joseph Lo 2019-05-29 702 for (i = 0; i < emc->num_channels; i++)
9b9d8632f51f360 Joseph Lo 2019-05-29 703 tegra210_emc_wait_for_update(emc, i, EMC_CFG_DIG_DLL,
9b9d8632f51f360 Joseph Lo 2019-05-29 704 EMC_CFG_DIG_DLL_CFG_DLL_EN, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 705
9b9d8632f51f360 Joseph Lo 2019-05-29 706 emc_dbg(emc, STEPS, "Step 1.2: Disable AUTOCAL temporarily.\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 707
9b9d8632f51f360 Joseph Lo 2019-05-29 708 emc_auto_cal_config = next->emc_auto_cal_config;
9b9d8632f51f360 Joseph Lo 2019-05-29 709 auto_cal_en = emc_auto_cal_config & EMC_AUTO_CAL_CONFIG_AUTO_CAL_ENABLE;
9b9d8632f51f360 Joseph Lo 2019-05-29 710 emc_auto_cal_config &= ~EMC_AUTO_CAL_CONFIG_AUTO_CAL_START;
9b9d8632f51f360 Joseph Lo 2019-05-29 711 emc_auto_cal_config |= EMC_AUTO_CAL_CONFIG_AUTO_CAL_MEASURE_STALL;
9b9d8632f51f360 Joseph Lo 2019-05-29 712 emc_auto_cal_config |= EMC_AUTO_CAL_CONFIG_AUTO_CAL_UPDATE_STALL;
9b9d8632f51f360 Joseph Lo 2019-05-29 713 emc_auto_cal_config |= auto_cal_en;
9b9d8632f51f360 Joseph Lo 2019-05-29 714 emc_writel(emc, emc_auto_cal_config, EMC_AUTO_CAL_CONFIG);
9b9d8632f51f360 Joseph Lo 2019-05-29 715 emc_readl(emc, EMC_AUTO_CAL_CONFIG); /* Flush write. */
9b9d8632f51f360 Joseph Lo 2019-05-29 716
9b9d8632f51f360 Joseph Lo 2019-05-29 717 emc_dbg(emc, STEPS, "Step 1.3: Disable other power features.\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 718
9b9d8632f51f360 Joseph Lo 2019-05-29 719 tegra210_emc_set_shadow_bypass(emc, ACTIVE);
9b9d8632f51f360 Joseph Lo 2019-05-29 720 emc_writel(emc, emc_cfg, EMC_CFG);
9b9d8632f51f360 Joseph Lo 2019-05-29 721 emc_writel(emc, emc_sel_dpd_ctrl, EMC_SEL_DPD_CTRL);
9b9d8632f51f360 Joseph Lo 2019-05-29 722 tegra210_emc_set_shadow_bypass(emc, ASSEMBLY);
9b9d8632f51f360 Joseph Lo 2019-05-29 723
9b9d8632f51f360 Joseph Lo 2019-05-29 724 if (next->periodic_training) {
9b9d8632f51f360 Joseph Lo 2019-05-29 725 tegra210_emc_reset_dram_clktree_values(next);
9b9d8632f51f360 Joseph Lo 2019-05-29 726
9b9d8632f51f360 Joseph Lo 2019-05-29 727 for (i = 0; i < emc->num_channels; i++)
9b9d8632f51f360 Joseph Lo 2019-05-29 728 tegra210_emc_wait_for_update(emc, i, EMC_EMC_STATUS,
9b9d8632f51f360 Joseph Lo 2019-05-29 729 EMC_EMC_STATUS_DRAM_IN_POWERDOWN_MASK,
9b9d8632f51f360 Joseph Lo 2019-05-29 730 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 731
9b9d8632f51f360 Joseph Lo 2019-05-29 732 for (i = 0; i < emc->num_channels; i++)
9b9d8632f51f360 Joseph Lo 2019-05-29 733 tegra210_emc_wait_for_update(emc, i, EMC_EMC_STATUS,
9b9d8632f51f360 Joseph Lo 2019-05-29 734 EMC_EMC_STATUS_DRAM_IN_SELF_REFRESH_MASK,
9b9d8632f51f360 Joseph Lo 2019-05-29 735 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 736
9b9d8632f51f360 Joseph Lo 2019-05-29 737 tegra210_emc_start_periodic_compensation(emc);
9b9d8632f51f360 Joseph Lo 2019-05-29 738
9b9d8632f51f360 Joseph Lo 2019-05-29 739 delay = 1000 * tegra210_emc_actual_osc_clocks(last->run_clocks);
9b9d8632f51f360 Joseph Lo 2019-05-29 740 udelay((delay / last->rate) + 2);
9b9d8632f51f360 Joseph Lo 2019-05-29 741
9b9d8632f51f360 Joseph Lo 2019-05-29 742 value = periodic_compensation_handler(emc, DVFS_SEQUENCE, fake,
9b9d8632f51f360 Joseph Lo 2019-05-29 743 next);
9b9d8632f51f360 Joseph Lo 2019-05-29 744 value = (value * 128 * next->rate / 1000) / 1000000;
9b9d8632f51f360 Joseph Lo 2019-05-29 745
9b9d8632f51f360 Joseph Lo 2019-05-29 746 if (next->periodic_training && value > next->tree_margin)
9b9d8632f51f360 Joseph Lo 2019-05-29 747 compensate_trimmer_applicable = true;
9b9d8632f51f360 Joseph Lo 2019-05-29 748 }
9b9d8632f51f360 Joseph Lo 2019-05-29 749
9b9d8632f51f360 Joseph Lo 2019-05-29 750 emc_writel(emc, EMC_INTSTATUS_CLKCHANGE_COMPLETE, EMC_INTSTATUS);
9b9d8632f51f360 Joseph Lo 2019-05-29 751 tegra210_emc_set_shadow_bypass(emc, ACTIVE);
9b9d8632f51f360 Joseph Lo 2019-05-29 752 emc_writel(emc, emc_cfg, EMC_CFG);
9b9d8632f51f360 Joseph Lo 2019-05-29 753 emc_writel(emc, emc_sel_dpd_ctrl, EMC_SEL_DPD_CTRL);
9b9d8632f51f360 Joseph Lo 2019-05-29 754 emc_writel(emc, emc_cfg_pipe_clk | EMC_CFG_PIPE_CLK_CLK_ALWAYS_ON,
9b9d8632f51f360 Joseph Lo 2019-05-29 755 EMC_CFG_PIPE_CLK);
9b9d8632f51f360 Joseph Lo 2019-05-29 756 emc_writel(emc, next->emc_fdpd_ctrl_cmd_no_ramp &
9b9d8632f51f360 Joseph Lo 2019-05-29 757 ~EMC_FDPD_CTRL_CMD_NO_RAMP_CMD_DPD_NO_RAMP_ENABLE,
9b9d8632f51f360 Joseph Lo 2019-05-29 758 EMC_FDPD_CTRL_CMD_NO_RAMP);
9b9d8632f51f360 Joseph Lo 2019-05-29 759
9b9d8632f51f360 Joseph Lo 2019-05-29 760 bg_reg_mode_change =
9b9d8632f51f360 Joseph Lo 2019-05-29 761 ((next->burst_regs[EMC_PMACRO_BG_BIAS_CTRL_0_INDEX] &
9b9d8632f51f360 Joseph Lo 2019-05-29 762 EMC_PMACRO_BG_BIAS_CTRL_0_BGLP_E_PWRD) ^
9b9d8632f51f360 Joseph Lo 2019-05-29 763 (last->burst_regs[EMC_PMACRO_BG_BIAS_CTRL_0_INDEX] &
9b9d8632f51f360 Joseph Lo 2019-05-29 764 EMC_PMACRO_BG_BIAS_CTRL_0_BGLP_E_PWRD)) ||
9b9d8632f51f360 Joseph Lo 2019-05-29 765 ((next->burst_regs[EMC_PMACRO_BG_BIAS_CTRL_0_INDEX] &
9b9d8632f51f360 Joseph Lo 2019-05-29 766 EMC_PMACRO_BG_BIAS_CTRL_0_BG_E_PWRD) ^
9b9d8632f51f360 Joseph Lo 2019-05-29 767 (last->burst_regs[EMC_PMACRO_BG_BIAS_CTRL_0_INDEX] &
9b9d8632f51f360 Joseph Lo 2019-05-29 768 EMC_PMACRO_BG_BIAS_CTRL_0_BG_E_PWRD));
9b9d8632f51f360 Joseph Lo 2019-05-29 769 enable_bglp_reg =
9b9d8632f51f360 Joseph Lo 2019-05-29 770 (next->burst_regs[EMC_PMACRO_BG_BIAS_CTRL_0_INDEX] &
9b9d8632f51f360 Joseph Lo 2019-05-29 771 EMC_PMACRO_BG_BIAS_CTRL_0_BGLP_E_PWRD) == 0;
9b9d8632f51f360 Joseph Lo 2019-05-29 772 enable_bg_reg =
9b9d8632f51f360 Joseph Lo 2019-05-29 773 (next->burst_regs[EMC_PMACRO_BG_BIAS_CTRL_0_INDEX] &
9b9d8632f51f360 Joseph Lo 2019-05-29 774 EMC_PMACRO_BG_BIAS_CTRL_0_BG_E_PWRD) == 0;
9b9d8632f51f360 Joseph Lo 2019-05-29 775
9b9d8632f51f360 Joseph Lo 2019-05-29 776 if (bg_reg_mode_change) {
9b9d8632f51f360 Joseph Lo 2019-05-29 777 if (enable_bg_reg)
9b9d8632f51f360 Joseph Lo 2019-05-29 778 emc_writel(emc, last->burst_regs
9b9d8632f51f360 Joseph Lo 2019-05-29 779 [EMC_PMACRO_BG_BIAS_CTRL_0_INDEX] &
9b9d8632f51f360 Joseph Lo 2019-05-29 780 ~EMC_PMACRO_BG_BIAS_CTRL_0_BG_E_PWRD,
9b9d8632f51f360 Joseph Lo 2019-05-29 781 EMC_PMACRO_BG_BIAS_CTRL_0);
9b9d8632f51f360 Joseph Lo 2019-05-29 782
9b9d8632f51f360 Joseph Lo 2019-05-29 783 if (enable_bglp_reg)
9b9d8632f51f360 Joseph Lo 2019-05-29 784 emc_writel(emc, last->burst_regs
9b9d8632f51f360 Joseph Lo 2019-05-29 785 [EMC_PMACRO_BG_BIAS_CTRL_0_INDEX] &
9b9d8632f51f360 Joseph Lo 2019-05-29 786 ~EMC_PMACRO_BG_BIAS_CTRL_0_BGLP_E_PWRD,
9b9d8632f51f360 Joseph Lo 2019-05-29 787 EMC_PMACRO_BG_BIAS_CTRL_0);
9b9d8632f51f360 Joseph Lo 2019-05-29 788 }
9b9d8632f51f360 Joseph Lo 2019-05-29 789
9b9d8632f51f360 Joseph Lo 2019-05-29 790 /* Check if we need to turn on VREF generator. */
9b9d8632f51f360 Joseph Lo 2019-05-29 791 if ((((last->burst_regs[EMC_PMACRO_DATA_PAD_TX_CTRL_INDEX] &
9b9d8632f51f360 Joseph Lo 2019-05-29 792 EMC_PMACRO_DATA_PAD_TX_CTRL_DATA_DQ_E_IVREF) == 0) &&
9b9d8632f51f360 Joseph Lo 2019-05-29 793 ((next->burst_regs[EMC_PMACRO_DATA_PAD_TX_CTRL_INDEX] &
9b9d8632f51f360 Joseph Lo 2019-05-29 794 EMC_PMACRO_DATA_PAD_TX_CTRL_DATA_DQ_E_IVREF) == 1)) ||
9b9d8632f51f360 Joseph Lo 2019-05-29 795 (((last->burst_regs[EMC_PMACRO_DATA_PAD_TX_CTRL_INDEX] &
9b9d8632f51f360 Joseph Lo 2019-05-29 796 EMC_PMACRO_DATA_PAD_TX_CTRL_DATA_DQS_E_IVREF) == 0) &&
9b9d8632f51f360 Joseph Lo 2019-05-29 797 ((next->burst_regs[EMC_PMACRO_DATA_PAD_TX_CTRL_INDEX] &
9b9d8632f51f360 Joseph Lo 2019-05-29 798 EMC_PMACRO_DATA_PAD_TX_CTRL_DATA_DQS_E_IVREF) != 0))) {
9b9d8632f51f360 Joseph Lo 2019-05-29 799 u32 pad_tx_ctrl =
9b9d8632f51f360 Joseph Lo 2019-05-29 800 next->burst_regs[EMC_PMACRO_DATA_PAD_TX_CTRL_INDEX];
9b9d8632f51f360 Joseph Lo 2019-05-29 801 u32 last_pad_tx_ctrl =
9b9d8632f51f360 Joseph Lo 2019-05-29 802 last->burst_regs[EMC_PMACRO_DATA_PAD_TX_CTRL_INDEX];
9b9d8632f51f360 Joseph Lo 2019-05-29 803 u32 next_dq_e_ivref, next_dqs_e_ivref;
9b9d8632f51f360 Joseph Lo 2019-05-29 804
9b9d8632f51f360 Joseph Lo 2019-05-29 805 next_dqs_e_ivref = pad_tx_ctrl &
9b9d8632f51f360 Joseph Lo 2019-05-29 806 EMC_PMACRO_DATA_PAD_TX_CTRL_DATA_DQS_E_IVREF;
9b9d8632f51f360 Joseph Lo 2019-05-29 807 next_dq_e_ivref = pad_tx_ctrl &
9b9d8632f51f360 Joseph Lo 2019-05-29 808 EMC_PMACRO_DATA_PAD_TX_CTRL_DATA_DQ_E_IVREF;
9b9d8632f51f360 Joseph Lo 2019-05-29 809 value = (last_pad_tx_ctrl &
9b9d8632f51f360 Joseph Lo 2019-05-29 810 ~EMC_PMACRO_DATA_PAD_TX_CTRL_DATA_DQ_E_IVREF &
9b9d8632f51f360 Joseph Lo 2019-05-29 811 ~EMC_PMACRO_DATA_PAD_TX_CTRL_DATA_DQS_E_IVREF) |
9b9d8632f51f360 Joseph Lo 2019-05-29 812 next_dq_e_ivref | next_dqs_e_ivref;
9b9d8632f51f360 Joseph Lo 2019-05-29 813 emc_writel(emc, value, EMC_PMACRO_DATA_PAD_TX_CTRL);
9b9d8632f51f360 Joseph Lo 2019-05-29 814 udelay(1);
9b9d8632f51f360 Joseph Lo 2019-05-29 815 } else if (bg_reg_mode_change) {
9b9d8632f51f360 Joseph Lo 2019-05-29 816 udelay(1);
9b9d8632f51f360 Joseph Lo 2019-05-29 817 }
9b9d8632f51f360 Joseph Lo 2019-05-29 818
9b9d8632f51f360 Joseph Lo 2019-05-29 819 tegra210_emc_set_shadow_bypass(emc, ASSEMBLY);
9b9d8632f51f360 Joseph Lo 2019-05-29 820
9b9d8632f51f360 Joseph Lo 2019-05-29 821 /*
9b9d8632f51f360 Joseph Lo 2019-05-29 822 * Step 2:
9b9d8632f51f360 Joseph Lo 2019-05-29 823 * Prelock the DLL.
9b9d8632f51f360 Joseph Lo 2019-05-29 824 */
9b9d8632f51f360 Joseph Lo 2019-05-29 825 emc_dbg(emc, STEPS, "Step 2\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 826
9b9d8632f51f360 Joseph Lo 2019-05-29 827 if (next->burst_regs[EMC_CFG_DIG_DLL_INDEX] &
9b9d8632f51f360 Joseph Lo 2019-05-29 828 EMC_CFG_DIG_DLL_CFG_DLL_EN) {
9b9d8632f51f360 Joseph Lo 2019-05-29 829 emc_dbg(emc, INFO, "Prelock enabled for target frequency.\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 830 value = tegra210_emc_dll_prelock(emc, clksrc);
9b9d8632f51f360 Joseph Lo 2019-05-29 831 emc_dbg(emc, INFO, "DLL out: 0x%03x\n", value);
9b9d8632f51f360 Joseph Lo 2019-05-29 832 } else {
9b9d8632f51f360 Joseph Lo 2019-05-29 833 emc_dbg(emc, INFO, "Disabling DLL for target frequency.\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 834 tegra210_emc_dll_disable(emc);
9b9d8632f51f360 Joseph Lo 2019-05-29 835 }
9b9d8632f51f360 Joseph Lo 2019-05-29 836
9b9d8632f51f360 Joseph Lo 2019-05-29 837 /*
9b9d8632f51f360 Joseph Lo 2019-05-29 838 * Step 3:
9b9d8632f51f360 Joseph Lo 2019-05-29 839 * Prepare autocal for the clock change.
9b9d8632f51f360 Joseph Lo 2019-05-29 840 */
9b9d8632f51f360 Joseph Lo 2019-05-29 841 emc_dbg(emc, STEPS, "Step 3\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 842
9b9d8632f51f360 Joseph Lo 2019-05-29 843 tegra210_emc_set_shadow_bypass(emc, ACTIVE);
9b9d8632f51f360 Joseph Lo 2019-05-29 844 emc_writel(emc, next->emc_auto_cal_config2, EMC_AUTO_CAL_CONFIG2);
9b9d8632f51f360 Joseph Lo 2019-05-29 845 emc_writel(emc, next->emc_auto_cal_config3, EMC_AUTO_CAL_CONFIG3);
9b9d8632f51f360 Joseph Lo 2019-05-29 846 emc_writel(emc, next->emc_auto_cal_config4, EMC_AUTO_CAL_CONFIG4);
9b9d8632f51f360 Joseph Lo 2019-05-29 847 emc_writel(emc, next->emc_auto_cal_config5, EMC_AUTO_CAL_CONFIG5);
9b9d8632f51f360 Joseph Lo 2019-05-29 848 emc_writel(emc, next->emc_auto_cal_config6, EMC_AUTO_CAL_CONFIG6);
9b9d8632f51f360 Joseph Lo 2019-05-29 849 emc_writel(emc, next->emc_auto_cal_config7, EMC_AUTO_CAL_CONFIG7);
9b9d8632f51f360 Joseph Lo 2019-05-29 850 emc_writel(emc, next->emc_auto_cal_config8, EMC_AUTO_CAL_CONFIG8);
9b9d8632f51f360 Joseph Lo 2019-05-29 851 tegra210_emc_set_shadow_bypass(emc, ASSEMBLY);
9b9d8632f51f360 Joseph Lo 2019-05-29 852
9b9d8632f51f360 Joseph Lo 2019-05-29 853 emc_auto_cal_config |= (EMC_AUTO_CAL_CONFIG_AUTO_CAL_COMPUTE_START |
9b9d8632f51f360 Joseph Lo 2019-05-29 854 auto_cal_en);
9b9d8632f51f360 Joseph Lo 2019-05-29 855 emc_writel(emc, emc_auto_cal_config, EMC_AUTO_CAL_CONFIG);
9b9d8632f51f360 Joseph Lo 2019-05-29 856
9b9d8632f51f360 Joseph Lo 2019-05-29 857 /*
9b9d8632f51f360 Joseph Lo 2019-05-29 858 * Step 4:
9b9d8632f51f360 Joseph Lo 2019-05-29 859 * Update EMC_CFG. (??)
9b9d8632f51f360 Joseph Lo 2019-05-29 860 */
9b9d8632f51f360 Joseph Lo 2019-05-29 861 emc_dbg(emc, STEPS, "Step 4\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 862
9b9d8632f51f360 Joseph Lo 2019-05-29 863 if (src_clk_period > 50000 && dram_type == DRAM_TYPE_LPDDR4)
9b9d8632f51f360 Joseph Lo 2019-05-29 864 ccfifo_writel(emc, 1, EMC_SELF_REF, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 865 else
9b9d8632f51f360 Joseph Lo 2019-05-29 866 emc_writel(emc, next->emc_cfg_2, EMC_CFG_2);
9b9d8632f51f360 Joseph Lo 2019-05-29 867
9b9d8632f51f360 Joseph Lo 2019-05-29 868 /*
9b9d8632f51f360 Joseph Lo 2019-05-29 869 * Step 5:
9b9d8632f51f360 Joseph Lo 2019-05-29 870 * Prepare reference variables for ZQCAL regs.
9b9d8632f51f360 Joseph Lo 2019-05-29 871 */
9b9d8632f51f360 Joseph Lo 2019-05-29 872 emc_dbg(emc, STEPS, "Step 5\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 873
9b9d8632f51f360 Joseph Lo 2019-05-29 874 if (dram_type == DRAM_TYPE_LPDDR4)
9b9d8632f51f360 Joseph Lo 2019-05-29 875 zq_wait_long = max((u32)1, div_o3(1000000, dst_clk_period));
9b9d8632f51f360 Joseph Lo 2019-05-29 876 else if (dram_type == DRAM_TYPE_LPDDR2 || is_lpddr3)
9b9d8632f51f360 Joseph Lo 2019-05-29 877 zq_wait_long = max(next->min_mrs_wait,
9b9d8632f51f360 Joseph Lo 2019-05-29 878 div_o3(360000, dst_clk_period)) + 4;
9b9d8632f51f360 Joseph Lo 2019-05-29 879 else if (dram_type == DRAM_TYPE_DDR3)
9b9d8632f51f360 Joseph Lo 2019-05-29 880 zq_wait_long = max((u32)256,
9b9d8632f51f360 Joseph Lo 2019-05-29 881 div_o3(320000, dst_clk_period) + 2);
9b9d8632f51f360 Joseph Lo 2019-05-29 882 else
9b9d8632f51f360 Joseph Lo 2019-05-29 883 zq_wait_long = 0;
9b9d8632f51f360 Joseph Lo 2019-05-29 884
9b9d8632f51f360 Joseph Lo 2019-05-29 885 /*
9b9d8632f51f360 Joseph Lo 2019-05-29 886 * Step 6:
9b9d8632f51f360 Joseph Lo 2019-05-29 887 * Training code - removed.
9b9d8632f51f360 Joseph Lo 2019-05-29 888 */
9b9d8632f51f360 Joseph Lo 2019-05-29 889 emc_dbg(emc, STEPS, "Step 6\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 890
9b9d8632f51f360 Joseph Lo 2019-05-29 891 /*
9b9d8632f51f360 Joseph Lo 2019-05-29 892 * Step 7:
9b9d8632f51f360 Joseph Lo 2019-05-29 893 * Program FSP reference registers and send MRWs to new FSPWR.
9b9d8632f51f360 Joseph Lo 2019-05-29 894 */
9b9d8632f51f360 Joseph Lo 2019-05-29 895 emc_dbg(emc, STEPS, "Step 7\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 896 emc_dbg(emc, SUB_STEPS, "Step 7.1: Bug 200024907 - Patch RP R2P");
9b9d8632f51f360 Joseph Lo 2019-05-29 897
9b9d8632f51f360 Joseph Lo 2019-05-29 898 /* WAR 200024907 */
9b9d8632f51f360 Joseph Lo 2019-05-29 899 if (dram_type == DRAM_TYPE_LPDDR4) {
9b9d8632f51f360 Joseph Lo 2019-05-29 900 u32 nRTP = 16;
9b9d8632f51f360 Joseph Lo 2019-05-29 901
9b9d8632f51f360 Joseph Lo 2019-05-29 902 if (src_clk_period >= 1000000 / 1866) /* 535.91 ps */
9b9d8632f51f360 Joseph Lo 2019-05-29 903 nRTP = 14;
9b9d8632f51f360 Joseph Lo 2019-05-29 904
9b9d8632f51f360 Joseph Lo 2019-05-29 905 if (src_clk_period >= 1000000 / 1600) /* 625.00 ps */
9b9d8632f51f360 Joseph Lo 2019-05-29 906 nRTP = 12;
9b9d8632f51f360 Joseph Lo 2019-05-29 907
9b9d8632f51f360 Joseph Lo 2019-05-29 908 if (src_clk_period >= 1000000 / 1333) /* 750.19 ps */
9b9d8632f51f360 Joseph Lo 2019-05-29 909 nRTP = 10;
9b9d8632f51f360 Joseph Lo 2019-05-29 910
9b9d8632f51f360 Joseph Lo 2019-05-29 911 if (src_clk_period >= 1000000 / 1066) /* 938.09 ps */
9b9d8632f51f360 Joseph Lo 2019-05-29 912 nRTP = 8;
9b9d8632f51f360 Joseph Lo 2019-05-29 913
9b9d8632f51f360 Joseph Lo 2019-05-29 914 deltaTWATM = max_t(u32, div_o3(7500, src_clk_period), 8);
9b9d8632f51f360 Joseph Lo 2019-05-29 915
9b9d8632f51f360 Joseph Lo 2019-05-29 916 /*
9b9d8632f51f360 Joseph Lo 2019-05-29 917 * Originally there was a + .5 in the tRPST calculation.
9b9d8632f51f360 Joseph Lo 2019-05-29 918 * However since we can't do FP in the kernel and the tRTM
9b9d8632f51f360 Joseph Lo 2019-05-29 919 * computation was in a floating point ceiling function, adding
9b9d8632f51f360 Joseph Lo 2019-05-29 920 * one to tRTP should be ok. There is no other source of non
9b9d8632f51f360 Joseph Lo 2019-05-29 921 * integer values, so the result was always going to be
9b9d8632f51f360 Joseph Lo 2019-05-29 922 * something for the form: f_ceil(N + .5) = N + 1;
9b9d8632f51f360 Joseph Lo 2019-05-29 923 */
9b9d8632f51f360 Joseph Lo 2019-05-29 924 tRPST = (last->emc_mrw & 0x80) >> 7;
9b9d8632f51f360 Joseph Lo 2019-05-29 925 tRTM = fake->dram_timings[RL] + div_o3(3600, src_clk_period) +
9b9d8632f51f360 Joseph Lo 2019-05-29 926 max_t(u32, div_o3(7500, src_clk_period), 8) + tRPST +
9b9d8632f51f360 Joseph Lo 2019-05-29 927 1 + nRTP;
9b9d8632f51f360 Joseph Lo 2019-05-29 928
9b9d8632f51f360 Joseph Lo 2019-05-29 929 emc_dbg(emc, INFO, "tRTM = %u, EMC_RP = %u\n", tRTM,
9b9d8632f51f360 Joseph Lo 2019-05-29 930 next->burst_regs[EMC_RP_INDEX]);
9b9d8632f51f360 Joseph Lo 2019-05-29 931
9b9d8632f51f360 Joseph Lo 2019-05-29 932 if (last->burst_regs[EMC_RP_INDEX] < tRTM) {
9b9d8632f51f360 Joseph Lo 2019-05-29 933 if (tRTM > (last->burst_regs[EMC_R2P_INDEX] +
9b9d8632f51f360 Joseph Lo 2019-05-29 934 last->burst_regs[EMC_RP_INDEX])) {
9b9d8632f51f360 Joseph Lo 2019-05-29 935 R2P_war = tRTM - last->burst_regs[EMC_RP_INDEX];
9b9d8632f51f360 Joseph Lo 2019-05-29 936 RP_war = last->burst_regs[EMC_RP_INDEX];
9b9d8632f51f360 Joseph Lo 2019-05-29 937 TRPab_war = last->burst_regs[EMC_TRPAB_INDEX];
9b9d8632f51f360 Joseph Lo 2019-05-29 938
9b9d8632f51f360 Joseph Lo 2019-05-29 939 if (R2P_war > 63) {
9b9d8632f51f360 Joseph Lo 2019-05-29 940 RP_war = R2P_war +
9b9d8632f51f360 Joseph Lo 2019-05-29 941 last->burst_regs[EMC_RP_INDEX] - 63;
9b9d8632f51f360 Joseph Lo 2019-05-29 942
9b9d8632f51f360 Joseph Lo 2019-05-29 943 if (TRPab_war < RP_war)
9b9d8632f51f360 Joseph Lo 2019-05-29 944 TRPab_war = RP_war;
9b9d8632f51f360 Joseph Lo 2019-05-29 945
9b9d8632f51f360 Joseph Lo 2019-05-29 946 R2P_war = 63;
9b9d8632f51f360 Joseph Lo 2019-05-29 947 }
9b9d8632f51f360 Joseph Lo 2019-05-29 948 } else {
9b9d8632f51f360 Joseph Lo 2019-05-29 949 R2P_war = last->burst_regs[EMC_R2P_INDEX];
9b9d8632f51f360 Joseph Lo 2019-05-29 950 RP_war = last->burst_regs[EMC_RP_INDEX];
9b9d8632f51f360 Joseph Lo 2019-05-29 951 TRPab_war = last->burst_regs[EMC_TRPAB_INDEX];
9b9d8632f51f360 Joseph Lo 2019-05-29 952 }
9b9d8632f51f360 Joseph Lo 2019-05-29 953
9b9d8632f51f360 Joseph Lo 2019-05-29 954 if (RP_war < deltaTWATM) {
9b9d8632f51f360 Joseph Lo 2019-05-29 955 W2P_war = last->burst_regs[EMC_W2P_INDEX]
9b9d8632f51f360 Joseph Lo 2019-05-29 956 + deltaTWATM - RP_war;
9b9d8632f51f360 Joseph Lo 2019-05-29 957 if (W2P_war > 63) {
9b9d8632f51f360 Joseph Lo 2019-05-29 958 RP_war = RP_war + W2P_war - 63;
9b9d8632f51f360 Joseph Lo 2019-05-29 959 if (TRPab_war < RP_war)
9b9d8632f51f360 Joseph Lo 2019-05-29 960 TRPab_war = RP_war;
9b9d8632f51f360 Joseph Lo 2019-05-29 961 W2P_war = 63;
9b9d8632f51f360 Joseph Lo 2019-05-29 962 }
9b9d8632f51f360 Joseph Lo 2019-05-29 963 } else {
9b9d8632f51f360 Joseph Lo 2019-05-29 964 W2P_war = last->burst_regs[
9b9d8632f51f360 Joseph Lo 2019-05-29 965 EMC_W2P_INDEX];
9b9d8632f51f360 Joseph Lo 2019-05-29 966 }
9b9d8632f51f360 Joseph Lo 2019-05-29 967
9b9d8632f51f360 Joseph Lo 2019-05-29 968 if ((last->burst_regs[EMC_W2P_INDEX] ^ W2P_war) ||
9b9d8632f51f360 Joseph Lo 2019-05-29 969 (last->burst_regs[EMC_R2P_INDEX] ^ R2P_war) ||
9b9d8632f51f360 Joseph Lo 2019-05-29 970 (last->burst_regs[EMC_RP_INDEX] ^ RP_war) ||
9b9d8632f51f360 Joseph Lo 2019-05-29 971 (last->burst_regs[EMC_TRPAB_INDEX] ^ TRPab_war)) {
9b9d8632f51f360 Joseph Lo 2019-05-29 972 emc_writel(emc, RP_war, EMC_RP);
9b9d8632f51f360 Joseph Lo 2019-05-29 973 emc_writel(emc, R2P_war, EMC_R2P);
9b9d8632f51f360 Joseph Lo 2019-05-29 974 emc_writel(emc, W2P_war, EMC_W2P);
9b9d8632f51f360 Joseph Lo 2019-05-29 975 emc_writel(emc, TRPab_war, EMC_TRPAB);
9b9d8632f51f360 Joseph Lo 2019-05-29 976 }
9b9d8632f51f360 Joseph Lo 2019-05-29 977
9b9d8632f51f360 Joseph Lo 2019-05-29 978 tegra210_emc_timing_update(emc);
9b9d8632f51f360 Joseph Lo 2019-05-29 979 } else {
9b9d8632f51f360 Joseph Lo 2019-05-29 980 emc_dbg(emc, INFO, "Skipped WAR\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 981 }
9b9d8632f51f360 Joseph Lo 2019-05-29 982 }
9b9d8632f51f360 Joseph Lo 2019-05-29 983
9b9d8632f51f360 Joseph Lo 2019-05-29 984 if (!fsp_for_next_freq) {
9b9d8632f51f360 Joseph Lo 2019-05-29 985 mr13_flip_fspwr = (next->emc_mrw3 & 0xffffff3f) | 0x80;
9b9d8632f51f360 Joseph Lo 2019-05-29 986 mr13_flip_fspop = (next->emc_mrw3 & 0xffffff3f) | 0x00;
9b9d8632f51f360 Joseph Lo 2019-05-29 987 } else {
9b9d8632f51f360 Joseph Lo 2019-05-29 988 mr13_flip_fspwr = (next->emc_mrw3 & 0xffffff3f) | 0x40;
9b9d8632f51f360 Joseph Lo 2019-05-29 989 mr13_flip_fspop = (next->emc_mrw3 & 0xffffff3f) | 0xc0;
9b9d8632f51f360 Joseph Lo 2019-05-29 990 }
9b9d8632f51f360 Joseph Lo 2019-05-29 991
9b9d8632f51f360 Joseph Lo 2019-05-29 992 if (dram_type == DRAM_TYPE_LPDDR4) {
9b9d8632f51f360 Joseph Lo 2019-05-29 993 emc_writel(emc, mr13_flip_fspwr, EMC_MRW3);
9b9d8632f51f360 Joseph Lo 2019-05-29 994 emc_writel(emc, next->emc_mrw, EMC_MRW);
9b9d8632f51f360 Joseph Lo 2019-05-29 995 emc_writel(emc, next->emc_mrw2, EMC_MRW2);
9b9d8632f51f360 Joseph Lo 2019-05-29 996 }
9b9d8632f51f360 Joseph Lo 2019-05-29 997
9b9d8632f51f360 Joseph Lo 2019-05-29 998 /*
9b9d8632f51f360 Joseph Lo 2019-05-29 999 * Step 8:
9b9d8632f51f360 Joseph Lo 2019-05-29 1000 * Program the shadow registers.
9b9d8632f51f360 Joseph Lo 2019-05-29 1001 */
9b9d8632f51f360 Joseph Lo 2019-05-29 1002 emc_dbg(emc, STEPS, "Step 8\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 1003 emc_dbg(emc, SUB_STEPS, "Writing burst_regs\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 1004
9b9d8632f51f360 Joseph Lo 2019-05-29 1005 for (i = 0; i < next->num_burst; i++) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1006 const u16 *offsets = emc->offsets->burst;
9b9d8632f51f360 Joseph Lo 2019-05-29 1007 u16 offset;
9b9d8632f51f360 Joseph Lo 2019-05-29 1008
9b9d8632f51f360 Joseph Lo 2019-05-29 1009 if (!offsets[i])
9b9d8632f51f360 Joseph Lo 2019-05-29 1010 continue;
9b9d8632f51f360 Joseph Lo 2019-05-29 1011
9b9d8632f51f360 Joseph Lo 2019-05-29 1012 value = next->burst_regs[i];
9b9d8632f51f360 Joseph Lo 2019-05-29 1013 offset = offsets[i];
9b9d8632f51f360 Joseph Lo 2019-05-29 1014
9b9d8632f51f360 Joseph Lo 2019-05-29 1015 if (dram_type != DRAM_TYPE_LPDDR4 &&
9b9d8632f51f360 Joseph Lo 2019-05-29 1016 (offset == EMC_MRW6 || offset == EMC_MRW7 ||
9b9d8632f51f360 Joseph Lo 2019-05-29 1017 offset == EMC_MRW8 || offset == EMC_MRW9 ||
9b9d8632f51f360 Joseph Lo 2019-05-29 1018 offset == EMC_MRW10 || offset == EMC_MRW11 ||
9b9d8632f51f360 Joseph Lo 2019-05-29 1019 offset == EMC_MRW12 || offset == EMC_MRW13 ||
9b9d8632f51f360 Joseph Lo 2019-05-29 1020 offset == EMC_MRW14 || offset == EMC_MRW15 ||
9b9d8632f51f360 Joseph Lo 2019-05-29 1021 offset == EMC_TRAINING_CTRL))
9b9d8632f51f360 Joseph Lo 2019-05-29 1022 continue;
9b9d8632f51f360 Joseph Lo 2019-05-29 1023
9b9d8632f51f360 Joseph Lo 2019-05-29 1024 /* Pain... And suffering. */
9b9d8632f51f360 Joseph Lo 2019-05-29 1025 if (offset == EMC_CFG) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1026 value &= ~EMC_CFG_DRAM_ACPD;
9b9d8632f51f360 Joseph Lo 2019-05-29 1027 value &= ~EMC_CFG_DYN_SELF_REF;
9b9d8632f51f360 Joseph Lo 2019-05-29 1028
9b9d8632f51f360 Joseph Lo 2019-05-29 1029 if (dram_type == DRAM_TYPE_LPDDR4) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1030 value &= ~EMC_CFG_DRAM_CLKSTOP_SR;
9b9d8632f51f360 Joseph Lo 2019-05-29 1031 value &= ~EMC_CFG_DRAM_CLKSTOP_PD;
9b9d8632f51f360 Joseph Lo 2019-05-29 1032 }
9b9d8632f51f360 Joseph Lo 2019-05-29 1033 } else if (offset == EMC_MRS_WAIT_CNT &&
9b9d8632f51f360 Joseph Lo 2019-05-29 1034 dram_type == DRAM_TYPE_LPDDR2 &&
9b9d8632f51f360 Joseph Lo 2019-05-29 @1035 opt_zcal_en_cc && !opt_cc_short_zcal &&
9b9d8632f51f360 Joseph Lo 2019-05-29 1036 opt_short_zcal) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1037 value = (value & ~(EMC_MRS_WAIT_CNT_SHORT_WAIT_MASK <<
9b9d8632f51f360 Joseph Lo 2019-05-29 1038 EMC_MRS_WAIT_CNT_SHORT_WAIT_SHIFT)) |
9b9d8632f51f360 Joseph Lo 2019-05-29 1039 ((zq_wait_long & EMC_MRS_WAIT_CNT_SHORT_WAIT_MASK) <<
9b9d8632f51f360 Joseph Lo 2019-05-29 1040 EMC_MRS_WAIT_CNT_SHORT_WAIT_SHIFT);
9b9d8632f51f360 Joseph Lo 2019-05-29 1041 } else if (offset == EMC_ZCAL_WAIT_CNT &&
9b9d8632f51f360 Joseph Lo 2019-05-29 1042 dram_type == DRAM_TYPE_DDR3 && opt_zcal_en_cc &&
9b9d8632f51f360 Joseph Lo 2019-05-29 1043 !opt_cc_short_zcal && opt_short_zcal) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1044 value = (value & ~(EMC_ZCAL_WAIT_CNT_ZCAL_WAIT_CNT_MASK <<
9b9d8632f51f360 Joseph Lo 2019-05-29 1045 EMC_ZCAL_WAIT_CNT_ZCAL_WAIT_CNT_SHIFT)) |
9b9d8632f51f360 Joseph Lo 2019-05-29 1046 ((zq_wait_long & EMC_ZCAL_WAIT_CNT_ZCAL_WAIT_CNT_MASK) <<
9b9d8632f51f360 Joseph Lo 2019-05-29 1047 EMC_MRS_WAIT_CNT_SHORT_WAIT_SHIFT);
9b9d8632f51f360 Joseph Lo 2019-05-29 1048 } else if (offset == EMC_ZCAL_INTERVAL && opt_zcal_en_cc) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1049 value = 0; /* EMC_ZCAL_INTERVAL reset value. */
9b9d8632f51f360 Joseph Lo 2019-05-29 1050 } else if (offset == EMC_PMACRO_AUTOCAL_CFG_COMMON) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1051 value |= EMC_PMACRO_AUTOCAL_CFG_COMMON_E_CAL_BYPASS_DVFS;
9b9d8632f51f360 Joseph Lo 2019-05-29 1052 } else if (offset == EMC_PMACRO_DATA_PAD_TX_CTRL) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1053 value &= ~(EMC_PMACRO_DATA_PAD_TX_CTRL_DATA_DQSP_TX_E_DCC |
9b9d8632f51f360 Joseph Lo 2019-05-29 1054 EMC_PMACRO_DATA_PAD_TX_CTRL_DATA_DQSN_TX_E_DCC |
9b9d8632f51f360 Joseph Lo 2019-05-29 1055 EMC_PMACRO_DATA_PAD_TX_CTRL_DATA_DQ_TX_E_DCC |
9b9d8632f51f360 Joseph Lo 2019-05-29 1056 EMC_PMACRO_DATA_PAD_TX_CTRL_DATA_CMD_TX_E_DCC);
9b9d8632f51f360 Joseph Lo 2019-05-29 1057 } else if (offset == EMC_PMACRO_CMD_PAD_TX_CTRL) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1058 value |= EMC_PMACRO_CMD_PAD_TX_CTRL_CMD_DQ_TX_DRVFORCEON;
9b9d8632f51f360 Joseph Lo 2019-05-29 1059 value &= ~(EMC_PMACRO_CMD_PAD_TX_CTRL_CMD_DQSP_TX_E_DCC |
9b9d8632f51f360 Joseph Lo 2019-05-29 1060 EMC_PMACRO_CMD_PAD_TX_CTRL_CMD_DQSN_TX_E_DCC |
9b9d8632f51f360 Joseph Lo 2019-05-29 1061 EMC_PMACRO_CMD_PAD_TX_CTRL_CMD_DQ_TX_E_DCC |
9b9d8632f51f360 Joseph Lo 2019-05-29 1062 EMC_PMACRO_CMD_PAD_TX_CTRL_CMD_CMD_TX_E_DCC);
9b9d8632f51f360 Joseph Lo 2019-05-29 1063 } else if (offset == EMC_PMACRO_BRICK_CTRL_RFU1) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1064 value &= 0xf800f800;
9b9d8632f51f360 Joseph Lo 2019-05-29 1065 } else if (offset == EMC_PMACRO_COMMON_PAD_TX_CTRL) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1066 value &= 0xfffffff0;
9b9d8632f51f360 Joseph Lo 2019-05-29 1067 }
9b9d8632f51f360 Joseph Lo 2019-05-29 1068
9b9d8632f51f360 Joseph Lo 2019-05-29 1069 emc_writel(emc, value, offset);
9b9d8632f51f360 Joseph Lo 2019-05-29 1070 }
9b9d8632f51f360 Joseph Lo 2019-05-29 1071
0553d7b204ef480 Thierry Reding 2020-04-03 1072 /* SW addition: do EMC refresh adjustment here. */
0553d7b204ef480 Thierry Reding 2020-04-03 1073 tegra210_emc_adjust_timing(emc, next);
0553d7b204ef480 Thierry Reding 2020-04-03 1074
9b9d8632f51f360 Joseph Lo 2019-05-29 1075 if (dram_type == DRAM_TYPE_LPDDR4) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1076 value = (23 << EMC_MRW_MRW_MA_SHIFT) |
9b9d8632f51f360 Joseph Lo 2019-05-29 1077 (next->run_clocks & EMC_MRW_MRW_OP_MASK);
9b9d8632f51f360 Joseph Lo 2019-05-29 1078 emc_writel(emc, value, EMC_MRW);
9b9d8632f51f360 Joseph Lo 2019-05-29 1079 }
9b9d8632f51f360 Joseph Lo 2019-05-29 1080
9b9d8632f51f360 Joseph Lo 2019-05-29 1081 /* Per channel burst registers. */
9b9d8632f51f360 Joseph Lo 2019-05-29 1082 emc_dbg(emc, SUB_STEPS, "Writing burst_regs_per_ch\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 1083
9b9d8632f51f360 Joseph Lo 2019-05-29 1084 for (i = 0; i < next->num_burst_per_ch; i++) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1085 const struct tegra210_emc_per_channel_regs *burst =
9b9d8632f51f360 Joseph Lo 2019-05-29 1086 emc->offsets->burst_per_channel;
9b9d8632f51f360 Joseph Lo 2019-05-29 1087
9b9d8632f51f360 Joseph Lo 2019-05-29 1088 if (!burst[i].offset)
9b9d8632f51f360 Joseph Lo 2019-05-29 1089 continue;
9b9d8632f51f360 Joseph Lo 2019-05-29 1090
9b9d8632f51f360 Joseph Lo 2019-05-29 1091 if (dram_type != DRAM_TYPE_LPDDR4 &&
9b9d8632f51f360 Joseph Lo 2019-05-29 1092 (burst[i].offset == EMC_MRW6 ||
9b9d8632f51f360 Joseph Lo 2019-05-29 1093 burst[i].offset == EMC_MRW7 ||
9b9d8632f51f360 Joseph Lo 2019-05-29 1094 burst[i].offset == EMC_MRW8 ||
9b9d8632f51f360 Joseph Lo 2019-05-29 1095 burst[i].offset == EMC_MRW9 ||
9b9d8632f51f360 Joseph Lo 2019-05-29 1096 burst[i].offset == EMC_MRW10 ||
9b9d8632f51f360 Joseph Lo 2019-05-29 1097 burst[i].offset == EMC_MRW11 ||
9b9d8632f51f360 Joseph Lo 2019-05-29 1098 burst[i].offset == EMC_MRW12 ||
9b9d8632f51f360 Joseph Lo 2019-05-29 1099 burst[i].offset == EMC_MRW13 ||
9b9d8632f51f360 Joseph Lo 2019-05-29 1100 burst[i].offset == EMC_MRW14 ||
9b9d8632f51f360 Joseph Lo 2019-05-29 1101 burst[i].offset == EMC_MRW15))
9b9d8632f51f360 Joseph Lo 2019-05-29 1102 continue;
9b9d8632f51f360 Joseph Lo 2019-05-29 1103
9b9d8632f51f360 Joseph Lo 2019-05-29 1104 /* Filter out second channel if not in DUAL_CHANNEL mode. */
9b9d8632f51f360 Joseph Lo 2019-05-29 1105 if (emc->num_channels < 2 && burst[i].bank >= 1)
9b9d8632f51f360 Joseph Lo 2019-05-29 1106 continue;
9b9d8632f51f360 Joseph Lo 2019-05-29 1107
9b9d8632f51f360 Joseph Lo 2019-05-29 1108 emc_dbg(emc, REG_LISTS, "(%u) 0x%08x => 0x%08x\n", i,
9b9d8632f51f360 Joseph Lo 2019-05-29 1109 next->burst_reg_per_ch[i], burst[i].offset);
9b9d8632f51f360 Joseph Lo 2019-05-29 1110 emc_channel_writel(emc, burst[i].bank,
9b9d8632f51f360 Joseph Lo 2019-05-29 1111 next->burst_reg_per_ch[i],
9b9d8632f51f360 Joseph Lo 2019-05-29 1112 burst[i].offset);
9b9d8632f51f360 Joseph Lo 2019-05-29 1113 }
9b9d8632f51f360 Joseph Lo 2019-05-29 1114
9b9d8632f51f360 Joseph Lo 2019-05-29 1115 /* Vref regs. */
9b9d8632f51f360 Joseph Lo 2019-05-29 1116 emc_dbg(emc, SUB_STEPS, "Writing vref_regs\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 1117
9b9d8632f51f360 Joseph Lo 2019-05-29 1118 for (i = 0; i < next->vref_num; i++) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1119 const struct tegra210_emc_per_channel_regs *vref =
9b9d8632f51f360 Joseph Lo 2019-05-29 1120 emc->offsets->vref_per_channel;
9b9d8632f51f360 Joseph Lo 2019-05-29 1121
9b9d8632f51f360 Joseph Lo 2019-05-29 1122 if (!vref[i].offset)
9b9d8632f51f360 Joseph Lo 2019-05-29 1123 continue;
9b9d8632f51f360 Joseph Lo 2019-05-29 1124
9b9d8632f51f360 Joseph Lo 2019-05-29 1125 if (emc->num_channels < 2 && vref[i].bank >= 1)
9b9d8632f51f360 Joseph Lo 2019-05-29 1126 continue;
9b9d8632f51f360 Joseph Lo 2019-05-29 1127
9b9d8632f51f360 Joseph Lo 2019-05-29 1128 emc_dbg(emc, REG_LISTS, "(%u) 0x%08x => 0x%08x\n", i,
9b9d8632f51f360 Joseph Lo 2019-05-29 1129 next->vref_perch_regs[i], vref[i].offset);
9b9d8632f51f360 Joseph Lo 2019-05-29 1130 emc_channel_writel(emc, vref[i].bank, next->vref_perch_regs[i],
9b9d8632f51f360 Joseph Lo 2019-05-29 1131 vref[i].offset);
9b9d8632f51f360 Joseph Lo 2019-05-29 1132 }
9b9d8632f51f360 Joseph Lo 2019-05-29 1133
9b9d8632f51f360 Joseph Lo 2019-05-29 1134 /* Trimmers. */
9b9d8632f51f360 Joseph Lo 2019-05-29 1135 emc_dbg(emc, SUB_STEPS, "Writing trim_regs\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 1136
9b9d8632f51f360 Joseph Lo 2019-05-29 1137 for (i = 0; i < next->num_trim; i++) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1138 const u16 *offsets = emc->offsets->trim;
9b9d8632f51f360 Joseph Lo 2019-05-29 1139
9b9d8632f51f360 Joseph Lo 2019-05-29 1140 if (!offsets[i])
9b9d8632f51f360 Joseph Lo 2019-05-29 1141 continue;
9b9d8632f51f360 Joseph Lo 2019-05-29 1142
9b9d8632f51f360 Joseph Lo 2019-05-29 1143 if (compensate_trimmer_applicable &&
9b9d8632f51f360 Joseph Lo 2019-05-29 1144 (offsets[i] == EMC_PMACRO_OB_DDLL_LONG_DQ_RANK0_0 ||
9b9d8632f51f360 Joseph Lo 2019-05-29 1145 offsets[i] == EMC_PMACRO_OB_DDLL_LONG_DQ_RANK0_1 ||
9b9d8632f51f360 Joseph Lo 2019-05-29 1146 offsets[i] == EMC_PMACRO_OB_DDLL_LONG_DQ_RANK0_2 ||
9b9d8632f51f360 Joseph Lo 2019-05-29 1147 offsets[i] == EMC_PMACRO_OB_DDLL_LONG_DQ_RANK0_3 ||
9b9d8632f51f360 Joseph Lo 2019-05-29 1148 offsets[i] == EMC_PMACRO_OB_DDLL_LONG_DQ_RANK1_0 ||
9b9d8632f51f360 Joseph Lo 2019-05-29 1149 offsets[i] == EMC_PMACRO_OB_DDLL_LONG_DQ_RANK1_1 ||
9b9d8632f51f360 Joseph Lo 2019-05-29 1150 offsets[i] == EMC_PMACRO_OB_DDLL_LONG_DQ_RANK1_2 ||
9b9d8632f51f360 Joseph Lo 2019-05-29 1151 offsets[i] == EMC_PMACRO_OB_DDLL_LONG_DQ_RANK1_3 ||
9b9d8632f51f360 Joseph Lo 2019-05-29 1152 offsets[i] == EMC_DATA_BRLSHFT_0 ||
9b9d8632f51f360 Joseph Lo 2019-05-29 1153 offsets[i] == EMC_DATA_BRLSHFT_1)) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1154 value = tegra210_emc_compensate(next, offsets[i]);
9b9d8632f51f360 Joseph Lo 2019-05-29 1155 emc_dbg(emc, REG_LISTS, "(%u) 0x%08x => 0x%08x\n", i,
9b9d8632f51f360 Joseph Lo 2019-05-29 1156 value, offsets[i]);
9b9d8632f51f360 Joseph Lo 2019-05-29 1157 emc_dbg(emc, EMA_WRITES, "0x%08x <= 0x%08x\n",
9b9d8632f51f360 Joseph Lo 2019-05-29 1158 (u32)(u64)offsets[i], value);
9b9d8632f51f360 Joseph Lo 2019-05-29 1159 emc_writel(emc, value, offsets[i]);
9b9d8632f51f360 Joseph Lo 2019-05-29 1160 } else {
9b9d8632f51f360 Joseph Lo 2019-05-29 1161 emc_dbg(emc, REG_LISTS, "(%u) 0x%08x => 0x%08x\n", i,
9b9d8632f51f360 Joseph Lo 2019-05-29 1162 next->trim_regs[i], offsets[i]);
9b9d8632f51f360 Joseph Lo 2019-05-29 1163 emc_writel(emc, next->trim_regs[i], offsets[i]);
9b9d8632f51f360 Joseph Lo 2019-05-29 1164 }
9b9d8632f51f360 Joseph Lo 2019-05-29 1165 }
9b9d8632f51f360 Joseph Lo 2019-05-29 1166
9b9d8632f51f360 Joseph Lo 2019-05-29 1167 /* Per channel trimmers. */
9b9d8632f51f360 Joseph Lo 2019-05-29 1168 emc_dbg(emc, SUB_STEPS, "Writing trim_regs_per_ch\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 1169
9b9d8632f51f360 Joseph Lo 2019-05-29 1170 for (i = 0; i < next->num_trim_per_ch; i++) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1171 const struct tegra210_emc_per_channel_regs *trim =
9b9d8632f51f360 Joseph Lo 2019-05-29 1172 &emc->offsets->trim_per_channel[0];
9b9d8632f51f360 Joseph Lo 2019-05-29 1173 unsigned int offset;
9b9d8632f51f360 Joseph Lo 2019-05-29 1174
9b9d8632f51f360 Joseph Lo 2019-05-29 1175 if (!trim[i].offset)
9b9d8632f51f360 Joseph Lo 2019-05-29 1176 continue;
9b9d8632f51f360 Joseph Lo 2019-05-29 1177
9b9d8632f51f360 Joseph Lo 2019-05-29 1178 if (emc->num_channels < 2 && trim[i].bank >= 1)
9b9d8632f51f360 Joseph Lo 2019-05-29 1179 continue;
9b9d8632f51f360 Joseph Lo 2019-05-29 1180
9b9d8632f51f360 Joseph Lo 2019-05-29 1181 offset = trim[i].offset;
9b9d8632f51f360 Joseph Lo 2019-05-29 1182
9b9d8632f51f360 Joseph Lo 2019-05-29 1183 if (compensate_trimmer_applicable &&
9b9d8632f51f360 Joseph Lo 2019-05-29 1184 (offset == EMC_PMACRO_OB_DDLL_LONG_DQ_RANK0_0 ||
9b9d8632f51f360 Joseph Lo 2019-05-29 1185 offset == EMC_PMACRO_OB_DDLL_LONG_DQ_RANK0_1 ||
9b9d8632f51f360 Joseph Lo 2019-05-29 1186 offset == EMC_PMACRO_OB_DDLL_LONG_DQ_RANK0_2 ||
9b9d8632f51f360 Joseph Lo 2019-05-29 1187 offset == EMC_PMACRO_OB_DDLL_LONG_DQ_RANK0_3 ||
9b9d8632f51f360 Joseph Lo 2019-05-29 1188 offset == EMC_PMACRO_OB_DDLL_LONG_DQ_RANK1_0 ||
9b9d8632f51f360 Joseph Lo 2019-05-29 1189 offset == EMC_PMACRO_OB_DDLL_LONG_DQ_RANK1_1 ||
9b9d8632f51f360 Joseph Lo 2019-05-29 1190 offset == EMC_PMACRO_OB_DDLL_LONG_DQ_RANK1_2 ||
9b9d8632f51f360 Joseph Lo 2019-05-29 1191 offset == EMC_PMACRO_OB_DDLL_LONG_DQ_RANK1_3 ||
9b9d8632f51f360 Joseph Lo 2019-05-29 1192 offset == EMC_DATA_BRLSHFT_0 ||
9b9d8632f51f360 Joseph Lo 2019-05-29 1193 offset == EMC_DATA_BRLSHFT_1)) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1194 value = tegra210_emc_compensate(next, offset);
9b9d8632f51f360 Joseph Lo 2019-05-29 1195 emc_dbg(emc, REG_LISTS, "(%u) 0x%08x => 0x%08x\n", i,
9b9d8632f51f360 Joseph Lo 2019-05-29 1196 value, offset);
9b9d8632f51f360 Joseph Lo 2019-05-29 1197 emc_dbg(emc, EMA_WRITES, "0x%08x <= 0x%08x\n", offset,
9b9d8632f51f360 Joseph Lo 2019-05-29 1198 value);
9b9d8632f51f360 Joseph Lo 2019-05-29 1199 emc_channel_writel(emc, trim[i].bank, value, offset);
9b9d8632f51f360 Joseph Lo 2019-05-29 1200 } else {
9b9d8632f51f360 Joseph Lo 2019-05-29 1201 emc_dbg(emc, REG_LISTS, "(%u) 0x%08x => 0x%08x\n", i,
9b9d8632f51f360 Joseph Lo 2019-05-29 1202 next->trim_perch_regs[i], offset);
9b9d8632f51f360 Joseph Lo 2019-05-29 1203 emc_channel_writel(emc, trim[i].bank,
9b9d8632f51f360 Joseph Lo 2019-05-29 1204 next->trim_perch_regs[i], offset);
9b9d8632f51f360 Joseph Lo 2019-05-29 1205 }
9b9d8632f51f360 Joseph Lo 2019-05-29 1206 }
9b9d8632f51f360 Joseph Lo 2019-05-29 1207
9b9d8632f51f360 Joseph Lo 2019-05-29 1208 emc_dbg(emc, SUB_STEPS, "Writing burst_mc_regs\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 1209
9b9d8632f51f360 Joseph Lo 2019-05-29 1210 for (i = 0; i < next->num_mc_regs; i++) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1211 const u16 *offsets = emc->offsets->burst_mc;
9b9d8632f51f360 Joseph Lo 2019-05-29 1212 u32 *values = next->burst_mc_regs;
9b9d8632f51f360 Joseph Lo 2019-05-29 1213
9b9d8632f51f360 Joseph Lo 2019-05-29 1214 emc_dbg(emc, REG_LISTS, "(%u) 0x%08x => 0x%08x\n", i,
9b9d8632f51f360 Joseph Lo 2019-05-29 1215 values[i], offsets[i]);
9b9d8632f51f360 Joseph Lo 2019-05-29 1216 mc_writel(emc->mc, values[i], offsets[i]);
9b9d8632f51f360 Joseph Lo 2019-05-29 1217 }
9b9d8632f51f360 Joseph Lo 2019-05-29 1218
9b9d8632f51f360 Joseph Lo 2019-05-29 1219 /* Registers to be programmed on the faster clock. */
9b9d8632f51f360 Joseph Lo 2019-05-29 1220 if (next->rate < last->rate) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1221 const u16 *la = emc->offsets->la_scale;
9b9d8632f51f360 Joseph Lo 2019-05-29 1222
9b9d8632f51f360 Joseph Lo 2019-05-29 1223 emc_dbg(emc, SUB_STEPS, "Writing la_scale_regs\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 1224
9b9d8632f51f360 Joseph Lo 2019-05-29 1225 for (i = 0; i < next->num_up_down; i++) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1226 emc_dbg(emc, REG_LISTS, "(%u) 0x%08x => 0x%08x\n", i,
9b9d8632f51f360 Joseph Lo 2019-05-29 1227 next->la_scale_regs[i], la[i]);
9b9d8632f51f360 Joseph Lo 2019-05-29 1228 mc_writel(emc->mc, next->la_scale_regs[i], la[i]);
9b9d8632f51f360 Joseph Lo 2019-05-29 1229 }
9b9d8632f51f360 Joseph Lo 2019-05-29 1230 }
9b9d8632f51f360 Joseph Lo 2019-05-29 1231
9b9d8632f51f360 Joseph Lo 2019-05-29 1232 /* Flush all the burst register writes. */
9b9d8632f51f360 Joseph Lo 2019-05-29 1233 mc_readl(emc->mc, MC_EMEM_ADR_CFG);
9b9d8632f51f360 Joseph Lo 2019-05-29 1234
9b9d8632f51f360 Joseph Lo 2019-05-29 1235 /*
9b9d8632f51f360 Joseph Lo 2019-05-29 1236 * Step 9:
9b9d8632f51f360 Joseph Lo 2019-05-29 1237 * LPDDR4 section A.
9b9d8632f51f360 Joseph Lo 2019-05-29 1238 */
9b9d8632f51f360 Joseph Lo 2019-05-29 1239 emc_dbg(emc, STEPS, "Step 9\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 1240
9b9d8632f51f360 Joseph Lo 2019-05-29 1241 value = next->burst_regs[EMC_ZCAL_WAIT_CNT_INDEX];
9b9d8632f51f360 Joseph Lo 2019-05-29 1242 value &= ~EMC_ZCAL_WAIT_CNT_ZCAL_WAIT_CNT_MASK;
9b9d8632f51f360 Joseph Lo 2019-05-29 1243
9b9d8632f51f360 Joseph Lo 2019-05-29 1244 if (dram_type == DRAM_TYPE_LPDDR4) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1245 emc_writel(emc, 0, EMC_ZCAL_INTERVAL);
9b9d8632f51f360 Joseph Lo 2019-05-29 1246 emc_writel(emc, value, EMC_ZCAL_WAIT_CNT);
9b9d8632f51f360 Joseph Lo 2019-05-29 1247
9b9d8632f51f360 Joseph Lo 2019-05-29 1248 value = emc_dbg | (EMC_DBG_WRITE_MUX_ACTIVE |
9b9d8632f51f360 Joseph Lo 2019-05-29 1249 EMC_DBG_WRITE_ACTIVE_ONLY);
9b9d8632f51f360 Joseph Lo 2019-05-29 1250
9b9d8632f51f360 Joseph Lo 2019-05-29 1251 emc_writel(emc, value, EMC_DBG);
9b9d8632f51f360 Joseph Lo 2019-05-29 1252 emc_writel(emc, 0, EMC_ZCAL_INTERVAL);
9b9d8632f51f360 Joseph Lo 2019-05-29 1253 emc_writel(emc, emc_dbg, EMC_DBG);
9b9d8632f51f360 Joseph Lo 2019-05-29 1254 }
9b9d8632f51f360 Joseph Lo 2019-05-29 1255
9b9d8632f51f360 Joseph Lo 2019-05-29 1256 /*
9b9d8632f51f360 Joseph Lo 2019-05-29 1257 * Step 10:
9b9d8632f51f360 Joseph Lo 2019-05-29 1258 * LPDDR4 and DDR3 common section.
9b9d8632f51f360 Joseph Lo 2019-05-29 1259 */
9b9d8632f51f360 Joseph Lo 2019-05-29 1260 emc_dbg(emc, STEPS, "Step 10\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 1261
9b9d8632f51f360 Joseph Lo 2019-05-29 1262 if (opt_dvfs_mode == MAN_SR || dram_type == DRAM_TYPE_LPDDR4) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1263 if (dram_type == DRAM_TYPE_LPDDR4)
9b9d8632f51f360 Joseph Lo 2019-05-29 1264 ccfifo_writel(emc, 0x101, EMC_SELF_REF, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1265 else
9b9d8632f51f360 Joseph Lo 2019-05-29 1266 ccfifo_writel(emc, 0x1, EMC_SELF_REF, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1267
9b9d8632f51f360 Joseph Lo 2019-05-29 1268 if (dram_type == DRAM_TYPE_LPDDR4 &&
9b9d8632f51f360 Joseph Lo 2019-05-29 1269 dst_clk_period <= zqcal_before_cc_cutoff) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1270 ccfifo_writel(emc, mr13_flip_fspwr ^ 0x40, EMC_MRW3, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1271 ccfifo_writel(emc, (next->burst_regs[EMC_MRW6_INDEX] &
9b9d8632f51f360 Joseph Lo 2019-05-29 1272 0xFFFF3F3F) |
9b9d8632f51f360 Joseph Lo 2019-05-29 1273 (last->burst_regs[EMC_MRW6_INDEX] &
9b9d8632f51f360 Joseph Lo 2019-05-29 1274 0x0000C0C0), EMC_MRW6, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1275 ccfifo_writel(emc, (next->burst_regs[EMC_MRW14_INDEX] &
9b9d8632f51f360 Joseph Lo 2019-05-29 1276 0xFFFF0707) |
9b9d8632f51f360 Joseph Lo 2019-05-29 1277 (last->burst_regs[EMC_MRW14_INDEX] &
9b9d8632f51f360 Joseph Lo 2019-05-29 1278 0x00003838), EMC_MRW14, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1279
9b9d8632f51f360 Joseph Lo 2019-05-29 1280 if (emc->num_devices > 1) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1281 ccfifo_writel(emc,
9b9d8632f51f360 Joseph Lo 2019-05-29 1282 (next->burst_regs[EMC_MRW7_INDEX] &
9b9d8632f51f360 Joseph Lo 2019-05-29 1283 0xFFFF3F3F) |
9b9d8632f51f360 Joseph Lo 2019-05-29 1284 (last->burst_regs[EMC_MRW7_INDEX] &
9b9d8632f51f360 Joseph Lo 2019-05-29 1285 0x0000C0C0), EMC_MRW7, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1286 ccfifo_writel(emc,
9b9d8632f51f360 Joseph Lo 2019-05-29 1287 (next->burst_regs[EMC_MRW15_INDEX] &
9b9d8632f51f360 Joseph Lo 2019-05-29 1288 0xFFFF0707) |
9b9d8632f51f360 Joseph Lo 2019-05-29 1289 (last->burst_regs[EMC_MRW15_INDEX] &
9b9d8632f51f360 Joseph Lo 2019-05-29 1290 0x00003838), EMC_MRW15, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1291 }
9b9d8632f51f360 Joseph Lo 2019-05-29 1292
9b9d8632f51f360 Joseph Lo 2019-05-29 1293 if (opt_zcal_en_cc) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1294 if (emc->num_devices < 2)
9b9d8632f51f360 Joseph Lo 2019-05-29 1295 ccfifo_writel(emc,
9b9d8632f51f360 Joseph Lo 2019-05-29 1296 2UL << EMC_ZQ_CAL_DEV_SEL_SHIFT
9b9d8632f51f360 Joseph Lo 2019-05-29 1297 | EMC_ZQ_CAL_ZQ_CAL_CMD,
9b9d8632f51f360 Joseph Lo 2019-05-29 1298 EMC_ZQ_CAL, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1299 else if (shared_zq_resistor)
9b9d8632f51f360 Joseph Lo 2019-05-29 1300 ccfifo_writel(emc,
9b9d8632f51f360 Joseph Lo 2019-05-29 1301 2UL << EMC_ZQ_CAL_DEV_SEL_SHIFT
9b9d8632f51f360 Joseph Lo 2019-05-29 1302 | EMC_ZQ_CAL_ZQ_CAL_CMD,
9b9d8632f51f360 Joseph Lo 2019-05-29 1303 EMC_ZQ_CAL, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1304 else
9b9d8632f51f360 Joseph Lo 2019-05-29 1305 ccfifo_writel(emc,
9b9d8632f51f360 Joseph Lo 2019-05-29 1306 EMC_ZQ_CAL_ZQ_CAL_CMD,
9b9d8632f51f360 Joseph Lo 2019-05-29 1307 EMC_ZQ_CAL, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1308 }
9b9d8632f51f360 Joseph Lo 2019-05-29 1309 }
9b9d8632f51f360 Joseph Lo 2019-05-29 1310 }
9b9d8632f51f360 Joseph Lo 2019-05-29 1311
9b9d8632f51f360 Joseph Lo 2019-05-29 1312 if (dram_type == DRAM_TYPE_LPDDR4) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1313 value = (1000 * fake->dram_timings[T_RP]) / src_clk_period;
9b9d8632f51f360 Joseph Lo 2019-05-29 1314 ccfifo_writel(emc, mr13_flip_fspop | 0x8, EMC_MRW3, value);
9b9d8632f51f360 Joseph Lo 2019-05-29 1315 ccfifo_writel(emc, 0, 0, tFC_lpddr4 / src_clk_period);
9b9d8632f51f360 Joseph Lo 2019-05-29 1316 }
9b9d8632f51f360 Joseph Lo 2019-05-29 1317
9b9d8632f51f360 Joseph Lo 2019-05-29 1318 if (dram_type == DRAM_TYPE_LPDDR4 || opt_dvfs_mode != MAN_SR) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1319 delay = 30;
9b9d8632f51f360 Joseph Lo 2019-05-29 1320
9b9d8632f51f360 Joseph Lo 2019-05-29 1321 if (cya_allow_ref_cc) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1322 delay += (1000 * fake->dram_timings[T_RP]) /
9b9d8632f51f360 Joseph Lo 2019-05-29 1323 src_clk_period;
9b9d8632f51f360 Joseph Lo 2019-05-29 1324 delay += 4000 * fake->dram_timings[T_RFC];
9b9d8632f51f360 Joseph Lo 2019-05-29 1325 }
9b9d8632f51f360 Joseph Lo 2019-05-29 1326
9b9d8632f51f360 Joseph Lo 2019-05-29 1327 ccfifo_writel(emc, emc_pin & ~(EMC_PIN_PIN_CKE_PER_DEV |
9b9d8632f51f360 Joseph Lo 2019-05-29 1328 EMC_PIN_PIN_CKEB |
9b9d8632f51f360 Joseph Lo 2019-05-29 1329 EMC_PIN_PIN_CKE),
9b9d8632f51f360 Joseph Lo 2019-05-29 1330 EMC_PIN, delay);
9b9d8632f51f360 Joseph Lo 2019-05-29 1331 }
9b9d8632f51f360 Joseph Lo 2019-05-29 1332
9b9d8632f51f360 Joseph Lo 2019-05-29 1333 /* calculate reference delay multiplier */
9b9d8632f51f360 Joseph Lo 2019-05-29 1334 value = 1;
9b9d8632f51f360 Joseph Lo 2019-05-29 1335
9b9d8632f51f360 Joseph Lo 2019-05-29 1336 if (ref_b4_sref_en)
9b9d8632f51f360 Joseph Lo 2019-05-29 1337 value++;
9b9d8632f51f360 Joseph Lo 2019-05-29 1338
9b9d8632f51f360 Joseph Lo 2019-05-29 1339 if (cya_allow_ref_cc)
9b9d8632f51f360 Joseph Lo 2019-05-29 1340 value++;
9b9d8632f51f360 Joseph Lo 2019-05-29 1341
9b9d8632f51f360 Joseph Lo 2019-05-29 1342 if (cya_issue_pc_ref)
9b9d8632f51f360 Joseph Lo 2019-05-29 1343 value++;
9b9d8632f51f360 Joseph Lo 2019-05-29 1344
9b9d8632f51f360 Joseph Lo 2019-05-29 1345 if (dram_type != DRAM_TYPE_LPDDR4) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1346 delay = ((1000 * fake->dram_timings[T_RP] / src_clk_period) +
9b9d8632f51f360 Joseph Lo 2019-05-29 1347 (1000 * fake->dram_timings[T_RFC] / src_clk_period));
9b9d8632f51f360 Joseph Lo 2019-05-29 1348 delay = value * delay + 20;
9b9d8632f51f360 Joseph Lo 2019-05-29 1349 } else {
9b9d8632f51f360 Joseph Lo 2019-05-29 1350 delay = 0;
9b9d8632f51f360 Joseph Lo 2019-05-29 1351 }
9b9d8632f51f360 Joseph Lo 2019-05-29 1352
9b9d8632f51f360 Joseph Lo 2019-05-29 1353 /*
9b9d8632f51f360 Joseph Lo 2019-05-29 1354 * Step 11:
9b9d8632f51f360 Joseph Lo 2019-05-29 1355 * Ramp down.
9b9d8632f51f360 Joseph Lo 2019-05-29 1356 */
9b9d8632f51f360 Joseph Lo 2019-05-29 1357 emc_dbg(emc, STEPS, "Step 11\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 1358
9b9d8632f51f360 Joseph Lo 2019-05-29 1359 ccfifo_writel(emc, 0x0, EMC_CFG_SYNC, delay);
9b9d8632f51f360 Joseph Lo 2019-05-29 1360
9b9d8632f51f360 Joseph Lo 2019-05-29 1361 value = emc_dbg | EMC_DBG_WRITE_MUX_ACTIVE | EMC_DBG_WRITE_ACTIVE_ONLY;
9b9d8632f51f360 Joseph Lo 2019-05-29 1362 ccfifo_writel(emc, value, EMC_DBG, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1363
9b9d8632f51f360 Joseph Lo 2019-05-29 1364 ramp_down_wait = tegra210_emc_dvfs_power_ramp_down(emc, src_clk_period,
9b9d8632f51f360 Joseph Lo 2019-05-29 1365 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1366
9b9d8632f51f360 Joseph Lo 2019-05-29 1367 /*
9b9d8632f51f360 Joseph Lo 2019-05-29 1368 * Step 12:
9b9d8632f51f360 Joseph Lo 2019-05-29 1369 * And finally - trigger the clock change.
9b9d8632f51f360 Joseph Lo 2019-05-29 1370 */
9b9d8632f51f360 Joseph Lo 2019-05-29 1371 emc_dbg(emc, STEPS, "Step 12\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 1372
9b9d8632f51f360 Joseph Lo 2019-05-29 1373 ccfifo_writel(emc, 1, EMC_STALL_THEN_EXE_AFTER_CLKCHANGE, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1374 value &= ~EMC_DBG_WRITE_ACTIVE_ONLY;
9b9d8632f51f360 Joseph Lo 2019-05-29 1375 ccfifo_writel(emc, value, EMC_DBG, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1376
9b9d8632f51f360 Joseph Lo 2019-05-29 1377 /*
9b9d8632f51f360 Joseph Lo 2019-05-29 1378 * Step 13:
9b9d8632f51f360 Joseph Lo 2019-05-29 1379 * Ramp up.
9b9d8632f51f360 Joseph Lo 2019-05-29 1380 */
9b9d8632f51f360 Joseph Lo 2019-05-29 1381 emc_dbg(emc, STEPS, "Step 13\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 1382
9b9d8632f51f360 Joseph Lo 2019-05-29 1383 ramp_up_wait = tegra210_emc_dvfs_power_ramp_up(emc, dst_clk_period, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1384 ccfifo_writel(emc, emc_dbg, EMC_DBG, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1385
9b9d8632f51f360 Joseph Lo 2019-05-29 1386 /*
9b9d8632f51f360 Joseph Lo 2019-05-29 1387 * Step 14:
9b9d8632f51f360 Joseph Lo 2019-05-29 1388 * Bringup CKE pins.
9b9d8632f51f360 Joseph Lo 2019-05-29 1389 */
9b9d8632f51f360 Joseph Lo 2019-05-29 1390 emc_dbg(emc, STEPS, "Step 14\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 1391
9b9d8632f51f360 Joseph Lo 2019-05-29 1392 if (dram_type == DRAM_TYPE_LPDDR4) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1393 value = emc_pin | EMC_PIN_PIN_CKE;
9b9d8632f51f360 Joseph Lo 2019-05-29 1394
9b9d8632f51f360 Joseph Lo 2019-05-29 1395 if (emc->num_devices <= 1)
9b9d8632f51f360 Joseph Lo 2019-05-29 1396 value &= ~(EMC_PIN_PIN_CKEB | EMC_PIN_PIN_CKE_PER_DEV);
9b9d8632f51f360 Joseph Lo 2019-05-29 1397 else
9b9d8632f51f360 Joseph Lo 2019-05-29 1398 value |= EMC_PIN_PIN_CKEB | EMC_PIN_PIN_CKE_PER_DEV;
9b9d8632f51f360 Joseph Lo 2019-05-29 1399
9b9d8632f51f360 Joseph Lo 2019-05-29 1400 ccfifo_writel(emc, value, EMC_PIN, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1401 }
9b9d8632f51f360 Joseph Lo 2019-05-29 1402
9b9d8632f51f360 Joseph Lo 2019-05-29 1403 /*
9b9d8632f51f360 Joseph Lo 2019-05-29 1404 * Step 15: (two step 15s ??)
9b9d8632f51f360 Joseph Lo 2019-05-29 1405 * Calculate zqlatch wait time; has dependency on ramping times.
9b9d8632f51f360 Joseph Lo 2019-05-29 1406 */
9b9d8632f51f360 Joseph Lo 2019-05-29 1407 emc_dbg(emc, STEPS, "Step 15\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 1408
9b9d8632f51f360 Joseph Lo 2019-05-29 1409 if (dst_clk_period <= zqcal_before_cc_cutoff) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1410 s32 t = (s32)(ramp_up_wait + ramp_down_wait) /
9b9d8632f51f360 Joseph Lo 2019-05-29 1411 (s32)dst_clk_period;
9b9d8632f51f360 Joseph Lo 2019-05-29 1412 zq_latch_dvfs_wait_time = (s32)tZQCAL_lpddr4_fc_adj - t;
9b9d8632f51f360 Joseph Lo 2019-05-29 1413 } else {
9b9d8632f51f360 Joseph Lo 2019-05-29 1414 zq_latch_dvfs_wait_time = tZQCAL_lpddr4_fc_adj -
9b9d8632f51f360 Joseph Lo 2019-05-29 1415 div_o3(1000 * next->dram_timings[T_PDEX],
9b9d8632f51f360 Joseph Lo 2019-05-29 1416 dst_clk_period);
9b9d8632f51f360 Joseph Lo 2019-05-29 1417 }
9b9d8632f51f360 Joseph Lo 2019-05-29 1418
9b9d8632f51f360 Joseph Lo 2019-05-29 1419 emc_dbg(emc, INFO, "tZQCAL_lpddr4_fc_adj = %u\n", tZQCAL_lpddr4_fc_adj);
9b9d8632f51f360 Joseph Lo 2019-05-29 1420 emc_dbg(emc, INFO, "dst_clk_period = %u\n",
9b9d8632f51f360 Joseph Lo 2019-05-29 1421 dst_clk_period);
9b9d8632f51f360 Joseph Lo 2019-05-29 1422 emc_dbg(emc, INFO, "next->dram_timings[T_PDEX] = %u\n",
9b9d8632f51f360 Joseph Lo 2019-05-29 1423 next->dram_timings[T_PDEX]);
9b9d8632f51f360 Joseph Lo 2019-05-29 1424 emc_dbg(emc, INFO, "zq_latch_dvfs_wait_time = %d\n",
9b9d8632f51f360 Joseph Lo 2019-05-29 1425 max_t(s32, 0, zq_latch_dvfs_wait_time));
9b9d8632f51f360 Joseph Lo 2019-05-29 1426
9b9d8632f51f360 Joseph Lo 2019-05-29 1427 if (dram_type == DRAM_TYPE_LPDDR4 && opt_zcal_en_cc) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1428 delay = div_o3(1000 * next->dram_timings[T_PDEX],
9b9d8632f51f360 Joseph Lo 2019-05-29 1429 dst_clk_period);
9b9d8632f51f360 Joseph Lo 2019-05-29 1430
9b9d8632f51f360 Joseph Lo 2019-05-29 1431 if (emc->num_devices < 2) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1432 if (dst_clk_period > zqcal_before_cc_cutoff)
9b9d8632f51f360 Joseph Lo 2019-05-29 1433 ccfifo_writel(emc,
9b9d8632f51f360 Joseph Lo 2019-05-29 1434 2UL << EMC_ZQ_CAL_DEV_SEL_SHIFT |
9b9d8632f51f360 Joseph Lo 2019-05-29 1435 EMC_ZQ_CAL_ZQ_CAL_CMD, EMC_ZQ_CAL,
9b9d8632f51f360 Joseph Lo 2019-05-29 1436 delay);
9b9d8632f51f360 Joseph Lo 2019-05-29 1437
9b9d8632f51f360 Joseph Lo 2019-05-29 1438 value = (mr13_flip_fspop & 0xfffffff7) | 0x0c000000;
9b9d8632f51f360 Joseph Lo 2019-05-29 1439 ccfifo_writel(emc, value, EMC_MRW3, delay);
9b9d8632f51f360 Joseph Lo 2019-05-29 1440 ccfifo_writel(emc, 0, EMC_SELF_REF, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1441 ccfifo_writel(emc, 0, EMC_REF, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1442 ccfifo_writel(emc, 2UL << EMC_ZQ_CAL_DEV_SEL_SHIFT |
9b9d8632f51f360 Joseph Lo 2019-05-29 1443 EMC_ZQ_CAL_ZQ_LATCH_CMD,
9b9d8632f51f360 Joseph Lo 2019-05-29 1444 EMC_ZQ_CAL,
9b9d8632f51f360 Joseph Lo 2019-05-29 1445 max_t(s32, 0, zq_latch_dvfs_wait_time));
9b9d8632f51f360 Joseph Lo 2019-05-29 1446 } else if (shared_zq_resistor) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1447 if (dst_clk_period > zqcal_before_cc_cutoff)
9b9d8632f51f360 Joseph Lo 2019-05-29 1448 ccfifo_writel(emc,
9b9d8632f51f360 Joseph Lo 2019-05-29 1449 2UL << EMC_ZQ_CAL_DEV_SEL_SHIFT |
9b9d8632f51f360 Joseph Lo 2019-05-29 1450 EMC_ZQ_CAL_ZQ_CAL_CMD, EMC_ZQ_CAL,
9b9d8632f51f360 Joseph Lo 2019-05-29 1451 delay);
9b9d8632f51f360 Joseph Lo 2019-05-29 1452
9b9d8632f51f360 Joseph Lo 2019-05-29 1453 ccfifo_writel(emc, 2UL << EMC_ZQ_CAL_DEV_SEL_SHIFT |
9b9d8632f51f360 Joseph Lo 2019-05-29 1454 EMC_ZQ_CAL_ZQ_LATCH_CMD, EMC_ZQ_CAL,
9b9d8632f51f360 Joseph Lo 2019-05-29 1455 max_t(s32, 0, zq_latch_dvfs_wait_time) +
9b9d8632f51f360 Joseph Lo 2019-05-29 1456 delay);
9b9d8632f51f360 Joseph Lo 2019-05-29 1457 ccfifo_writel(emc, 1UL << EMC_ZQ_CAL_DEV_SEL_SHIFT |
9b9d8632f51f360 Joseph Lo 2019-05-29 1458 EMC_ZQ_CAL_ZQ_LATCH_CMD,
9b9d8632f51f360 Joseph Lo 2019-05-29 1459 EMC_ZQ_CAL, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1460
9b9d8632f51f360 Joseph Lo 2019-05-29 1461 value = (mr13_flip_fspop & 0xfffffff7) | 0x0c000000;
9b9d8632f51f360 Joseph Lo 2019-05-29 1462 ccfifo_writel(emc, value, EMC_MRW3, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1463 ccfifo_writel(emc, 0, EMC_SELF_REF, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1464 ccfifo_writel(emc, 0, EMC_REF, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1465
9b9d8632f51f360 Joseph Lo 2019-05-29 1466 ccfifo_writel(emc, 1UL << EMC_ZQ_CAL_DEV_SEL_SHIFT |
9b9d8632f51f360 Joseph Lo 2019-05-29 1467 EMC_ZQ_CAL_ZQ_LATCH_CMD, EMC_ZQ_CAL,
9b9d8632f51f360 Joseph Lo 2019-05-29 1468 tZQCAL_lpddr4 / dst_clk_period);
9b9d8632f51f360 Joseph Lo 2019-05-29 1469 } else {
9b9d8632f51f360 Joseph Lo 2019-05-29 1470 if (dst_clk_period > zqcal_before_cc_cutoff)
9b9d8632f51f360 Joseph Lo 2019-05-29 1471 ccfifo_writel(emc, EMC_ZQ_CAL_ZQ_CAL_CMD,
9b9d8632f51f360 Joseph Lo 2019-05-29 1472 EMC_ZQ_CAL, delay);
9b9d8632f51f360 Joseph Lo 2019-05-29 1473
9b9d8632f51f360 Joseph Lo 2019-05-29 1474 value = (mr13_flip_fspop & 0xfffffff7) | 0x0c000000;
9b9d8632f51f360 Joseph Lo 2019-05-29 1475 ccfifo_writel(emc, value, EMC_MRW3, delay);
9b9d8632f51f360 Joseph Lo 2019-05-29 1476 ccfifo_writel(emc, 0, EMC_SELF_REF, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1477 ccfifo_writel(emc, 0, EMC_REF, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1478
9b9d8632f51f360 Joseph Lo 2019-05-29 1479 ccfifo_writel(emc, EMC_ZQ_CAL_ZQ_LATCH_CMD, EMC_ZQ_CAL,
9b9d8632f51f360 Joseph Lo 2019-05-29 1480 max_t(s32, 0, zq_latch_dvfs_wait_time));
9b9d8632f51f360 Joseph Lo 2019-05-29 1481 }
9b9d8632f51f360 Joseph Lo 2019-05-29 1482 }
9b9d8632f51f360 Joseph Lo 2019-05-29 1483
9b9d8632f51f360 Joseph Lo 2019-05-29 1484 /* WAR: delay for zqlatch */
9b9d8632f51f360 Joseph Lo 2019-05-29 1485 ccfifo_writel(emc, 0, 0, 10);
9b9d8632f51f360 Joseph Lo 2019-05-29 1486
9b9d8632f51f360 Joseph Lo 2019-05-29 1487 /*
9b9d8632f51f360 Joseph Lo 2019-05-29 1488 * Step 16:
9b9d8632f51f360 Joseph Lo 2019-05-29 1489 * LPDDR4 Conditional Training Kickoff. Removed.
9b9d8632f51f360 Joseph Lo 2019-05-29 1490 */
9b9d8632f51f360 Joseph Lo 2019-05-29 1491
9b9d8632f51f360 Joseph Lo 2019-05-29 1492 /*
9b9d8632f51f360 Joseph Lo 2019-05-29 1493 * Step 17:
9b9d8632f51f360 Joseph Lo 2019-05-29 1494 * MANSR exit self refresh.
9b9d8632f51f360 Joseph Lo 2019-05-29 1495 */
9b9d8632f51f360 Joseph Lo 2019-05-29 1496 emc_dbg(emc, STEPS, "Step 17\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 1497
9b9d8632f51f360 Joseph Lo 2019-05-29 1498 if (opt_dvfs_mode == MAN_SR && dram_type != DRAM_TYPE_LPDDR4)
9b9d8632f51f360 Joseph Lo 2019-05-29 1499 ccfifo_writel(emc, 0, EMC_SELF_REF, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1500
9b9d8632f51f360 Joseph Lo 2019-05-29 1501 /*
9b9d8632f51f360 Joseph Lo 2019-05-29 1502 * Step 18:
9b9d8632f51f360 Joseph Lo 2019-05-29 1503 * Send MRWs to LPDDR3/DDR3.
9b9d8632f51f360 Joseph Lo 2019-05-29 1504 */
9b9d8632f51f360 Joseph Lo 2019-05-29 1505 emc_dbg(emc, STEPS, "Step 18\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 1506
9b9d8632f51f360 Joseph Lo 2019-05-29 1507 if (dram_type == DRAM_TYPE_LPDDR2) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1508 ccfifo_writel(emc, next->emc_mrw2, EMC_MRW2, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1509 ccfifo_writel(emc, next->emc_mrw, EMC_MRW, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1510 if (is_lpddr3)
9b9d8632f51f360 Joseph Lo 2019-05-29 1511 ccfifo_writel(emc, next->emc_mrw4, EMC_MRW4, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1512 } else if (dram_type == DRAM_TYPE_DDR3) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1513 if (opt_dll_mode)
9b9d8632f51f360 Joseph Lo 2019-05-29 1514 ccfifo_writel(emc, next->emc_emrs &
9b9d8632f51f360 Joseph Lo 2019-05-29 1515 ~EMC_EMRS_USE_EMRS_LONG_CNT, EMC_EMRS, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1516 ccfifo_writel(emc, next->emc_emrs2 &
9b9d8632f51f360 Joseph Lo 2019-05-29 1517 ~EMC_EMRS2_USE_EMRS2_LONG_CNT, EMC_EMRS2, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1518 ccfifo_writel(emc, next->emc_mrs |
9b9d8632f51f360 Joseph Lo 2019-05-29 1519 EMC_EMRS_USE_EMRS_LONG_CNT, EMC_MRS, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1520 }
9b9d8632f51f360 Joseph Lo 2019-05-29 1521
9b9d8632f51f360 Joseph Lo 2019-05-29 1522 /*
9b9d8632f51f360 Joseph Lo 2019-05-29 1523 * Step 19:
9b9d8632f51f360 Joseph Lo 2019-05-29 1524 * ZQCAL for LPDDR3/DDR3
9b9d8632f51f360 Joseph Lo 2019-05-29 1525 */
9b9d8632f51f360 Joseph Lo 2019-05-29 1526 emc_dbg(emc, STEPS, "Step 19\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 1527
9b9d8632f51f360 Joseph Lo 2019-05-29 1528 if (opt_zcal_en_cc) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1529 if (dram_type == DRAM_TYPE_LPDDR2) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1530 value = opt_cc_short_zcal ? 90000 : 360000;
9b9d8632f51f360 Joseph Lo 2019-05-29 1531 value = div_o3(value, dst_clk_period);
9b9d8632f51f360 Joseph Lo 2019-05-29 1532 value = value <<
9b9d8632f51f360 Joseph Lo 2019-05-29 1533 EMC_MRS_WAIT_CNT2_MRS_EXT2_WAIT_CNT_SHIFT |
9b9d8632f51f360 Joseph Lo 2019-05-29 1534 value <<
9b9d8632f51f360 Joseph Lo 2019-05-29 1535 EMC_MRS_WAIT_CNT2_MRS_EXT1_WAIT_CNT_SHIFT;
9b9d8632f51f360 Joseph Lo 2019-05-29 1536 ccfifo_writel(emc, value, EMC_MRS_WAIT_CNT2, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1537
9b9d8632f51f360 Joseph Lo 2019-05-29 1538 value = opt_cc_short_zcal ? 0x56 : 0xab;
9b9d8632f51f360 Joseph Lo 2019-05-29 1539 ccfifo_writel(emc, 2 << EMC_MRW_MRW_DEV_SELECTN_SHIFT |
9b9d8632f51f360 Joseph Lo 2019-05-29 1540 EMC_MRW_USE_MRW_EXT_CNT |
9b9d8632f51f360 Joseph Lo 2019-05-29 1541 10 << EMC_MRW_MRW_MA_SHIFT |
9b9d8632f51f360 Joseph Lo 2019-05-29 1542 value << EMC_MRW_MRW_OP_SHIFT,
9b9d8632f51f360 Joseph Lo 2019-05-29 1543 EMC_MRW, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1544
9b9d8632f51f360 Joseph Lo 2019-05-29 1545 if (emc->num_devices > 1) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1546 value = 1 << EMC_MRW_MRW_DEV_SELECTN_SHIFT |
9b9d8632f51f360 Joseph Lo 2019-05-29 1547 EMC_MRW_USE_MRW_EXT_CNT |
9b9d8632f51f360 Joseph Lo 2019-05-29 1548 10 << EMC_MRW_MRW_MA_SHIFT |
9b9d8632f51f360 Joseph Lo 2019-05-29 1549 value << EMC_MRW_MRW_OP_SHIFT;
9b9d8632f51f360 Joseph Lo 2019-05-29 1550 ccfifo_writel(emc, value, EMC_MRW, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1551 }
9b9d8632f51f360 Joseph Lo 2019-05-29 1552 } else if (dram_type == DRAM_TYPE_DDR3) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1553 value = opt_cc_short_zcal ? 0 : EMC_ZQ_CAL_LONG;
9b9d8632f51f360 Joseph Lo 2019-05-29 1554
9b9d8632f51f360 Joseph Lo 2019-05-29 1555 ccfifo_writel(emc, value |
9b9d8632f51f360 Joseph Lo 2019-05-29 1556 2 << EMC_ZQ_CAL_DEV_SEL_SHIFT |
9b9d8632f51f360 Joseph Lo 2019-05-29 1557 EMC_ZQ_CAL_ZQ_CAL_CMD, EMC_ZQ_CAL,
9b9d8632f51f360 Joseph Lo 2019-05-29 1558 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1559
9b9d8632f51f360 Joseph Lo 2019-05-29 1560 if (emc->num_devices > 1) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1561 value = value | 1 << EMC_ZQ_CAL_DEV_SEL_SHIFT |
9b9d8632f51f360 Joseph Lo 2019-05-29 1562 EMC_ZQ_CAL_ZQ_CAL_CMD;
9b9d8632f51f360 Joseph Lo 2019-05-29 1563 ccfifo_writel(emc, value, EMC_ZQ_CAL, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1564 }
9b9d8632f51f360 Joseph Lo 2019-05-29 1565 }
9b9d8632f51f360 Joseph Lo 2019-05-29 1566 }
9b9d8632f51f360 Joseph Lo 2019-05-29 1567
9b9d8632f51f360 Joseph Lo 2019-05-29 1568 if (bg_reg_mode_change) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1569 tegra210_emc_set_shadow_bypass(emc, ACTIVE);
9b9d8632f51f360 Joseph Lo 2019-05-29 1570
9b9d8632f51f360 Joseph Lo 2019-05-29 1571 if (ramp_up_wait <= 1250000)
9b9d8632f51f360 Joseph Lo 2019-05-29 1572 delay = (1250000 - ramp_up_wait) / dst_clk_period;
9b9d8632f51f360 Joseph Lo 2019-05-29 1573 else
9b9d8632f51f360 Joseph Lo 2019-05-29 1574 delay = 0;
9b9d8632f51f360 Joseph Lo 2019-05-29 1575
9b9d8632f51f360 Joseph Lo 2019-05-29 1576 ccfifo_writel(emc,
9b9d8632f51f360 Joseph Lo 2019-05-29 1577 next->burst_regs[EMC_PMACRO_BG_BIAS_CTRL_0_INDEX],
9b9d8632f51f360 Joseph Lo 2019-05-29 1578 EMC_PMACRO_BG_BIAS_CTRL_0, delay);
9b9d8632f51f360 Joseph Lo 2019-05-29 1579 tegra210_emc_set_shadow_bypass(emc, ASSEMBLY);
9b9d8632f51f360 Joseph Lo 2019-05-29 1580 }
9b9d8632f51f360 Joseph Lo 2019-05-29 1581
9b9d8632f51f360 Joseph Lo 2019-05-29 1582 /*
9b9d8632f51f360 Joseph Lo 2019-05-29 1583 * Step 20:
9b9d8632f51f360 Joseph Lo 2019-05-29 1584 * Issue ref and optional QRST.
9b9d8632f51f360 Joseph Lo 2019-05-29 1585 */
9b9d8632f51f360 Joseph Lo 2019-05-29 1586 emc_dbg(emc, STEPS, "Step 20\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 1587
9b9d8632f51f360 Joseph Lo 2019-05-29 1588 if (dram_type != DRAM_TYPE_LPDDR4)
9b9d8632f51f360 Joseph Lo 2019-05-29 1589 ccfifo_writel(emc, 0, EMC_REF, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1590
9b9d8632f51f360 Joseph Lo 2019-05-29 1591 if (opt_do_sw_qrst) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1592 ccfifo_writel(emc, 1, EMC_ISSUE_QRST, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1593 ccfifo_writel(emc, 0, EMC_ISSUE_QRST, 2);
9b9d8632f51f360 Joseph Lo 2019-05-29 1594 }
9b9d8632f51f360 Joseph Lo 2019-05-29 1595
9b9d8632f51f360 Joseph Lo 2019-05-29 1596 /*
9b9d8632f51f360 Joseph Lo 2019-05-29 1597 * Step 21:
9b9d8632f51f360 Joseph Lo 2019-05-29 1598 * Restore ZCAL and ZCAL interval.
9b9d8632f51f360 Joseph Lo 2019-05-29 1599 */
9b9d8632f51f360 Joseph Lo 2019-05-29 1600 emc_dbg(emc, STEPS, "Step 21\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 1601
9b9d8632f51f360 Joseph Lo 2019-05-29 1602 if (save_restore_clkstop_pd || opt_zcal_en_cc) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1603 ccfifo_writel(emc, emc_dbg | EMC_DBG_WRITE_MUX_ACTIVE,
9b9d8632f51f360 Joseph Lo 2019-05-29 1604 EMC_DBG, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1605 if (opt_zcal_en_cc && dram_type != DRAM_TYPE_LPDDR4)
9b9d8632f51f360 Joseph Lo 2019-05-29 1606 ccfifo_writel(emc, next->burst_regs[EMC_ZCAL_INTERVAL_INDEX],
9b9d8632f51f360 Joseph Lo 2019-05-29 1607 EMC_ZCAL_INTERVAL, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1608
9b9d8632f51f360 Joseph Lo 2019-05-29 1609 if (save_restore_clkstop_pd)
9b9d8632f51f360 Joseph Lo 2019-05-29 1610 ccfifo_writel(emc, next->burst_regs[EMC_CFG_INDEX] &
9b9d8632f51f360 Joseph Lo 2019-05-29 1611 ~EMC_CFG_DYN_SELF_REF,
9b9d8632f51f360 Joseph Lo 2019-05-29 1612 EMC_CFG, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1613 ccfifo_writel(emc, emc_dbg, EMC_DBG, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1614 }
9b9d8632f51f360 Joseph Lo 2019-05-29 1615
9b9d8632f51f360 Joseph Lo 2019-05-29 1616 /*
9b9d8632f51f360 Joseph Lo 2019-05-29 1617 * Step 22:
9b9d8632f51f360 Joseph Lo 2019-05-29 1618 * Restore EMC_CFG_PIPE_CLK.
9b9d8632f51f360 Joseph Lo 2019-05-29 1619 */
9b9d8632f51f360 Joseph Lo 2019-05-29 1620 emc_dbg(emc, STEPS, "Step 22\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 1621
9b9d8632f51f360 Joseph Lo 2019-05-29 1622 ccfifo_writel(emc, emc_cfg_pipe_clk, EMC_CFG_PIPE_CLK, 0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1623
9b9d8632f51f360 Joseph Lo 2019-05-29 1624 if (bg_reg_mode_change) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1625 if (enable_bg_reg)
9b9d8632f51f360 Joseph Lo 2019-05-29 1626 emc_writel(emc,
9b9d8632f51f360 Joseph Lo 2019-05-29 1627 next->burst_regs[EMC_PMACRO_BG_BIAS_CTRL_0_INDEX] &
9b9d8632f51f360 Joseph Lo 2019-05-29 1628 ~EMC_PMACRO_BG_BIAS_CTRL_0_BGLP_E_PWRD,
9b9d8632f51f360 Joseph Lo 2019-05-29 1629 EMC_PMACRO_BG_BIAS_CTRL_0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1630 else
9b9d8632f51f360 Joseph Lo 2019-05-29 1631 emc_writel(emc,
9b9d8632f51f360 Joseph Lo 2019-05-29 1632 next->burst_regs[EMC_PMACRO_BG_BIAS_CTRL_0_INDEX] &
9b9d8632f51f360 Joseph Lo 2019-05-29 1633 ~EMC_PMACRO_BG_BIAS_CTRL_0_BG_E_PWRD,
9b9d8632f51f360 Joseph Lo 2019-05-29 1634 EMC_PMACRO_BG_BIAS_CTRL_0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1635 }
9b9d8632f51f360 Joseph Lo 2019-05-29 1636
9b9d8632f51f360 Joseph Lo 2019-05-29 1637 /*
9b9d8632f51f360 Joseph Lo 2019-05-29 1638 * Step 23:
9b9d8632f51f360 Joseph Lo 2019-05-29 1639 */
9b9d8632f51f360 Joseph Lo 2019-05-29 1640 emc_dbg(emc, STEPS, "Step 23\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 1641
9b9d8632f51f360 Joseph Lo 2019-05-29 1642 value = emc_readl(emc, EMC_CFG_DIG_DLL);
9b9d8632f51f360 Joseph Lo 2019-05-29 1643 value |= EMC_CFG_DIG_DLL_CFG_DLL_STALL_ALL_TRAFFIC;
9b9d8632f51f360 Joseph Lo 2019-05-29 1644 value &= ~EMC_CFG_DIG_DLL_CFG_DLL_STALL_RW_UNTIL_LOCK;
9b9d8632f51f360 Joseph Lo 2019-05-29 1645 value &= ~EMC_CFG_DIG_DLL_CFG_DLL_STALL_ALL_UNTIL_LOCK;
9b9d8632f51f360 Joseph Lo 2019-05-29 1646 value &= ~EMC_CFG_DIG_DLL_CFG_DLL_EN;
9b9d8632f51f360 Joseph Lo 2019-05-29 1647 value = (value & ~EMC_CFG_DIG_DLL_CFG_DLL_MODE_MASK) |
9b9d8632f51f360 Joseph Lo 2019-05-29 1648 (2 << EMC_CFG_DIG_DLL_CFG_DLL_MODE_SHIFT);
9b9d8632f51f360 Joseph Lo 2019-05-29 1649 emc_writel(emc, value, EMC_CFG_DIG_DLL);
9b9d8632f51f360 Joseph Lo 2019-05-29 1650
9b9d8632f51f360 Joseph Lo 2019-05-29 1651 tegra210_emc_do_clock_change(emc, clksrc);
9b9d8632f51f360 Joseph Lo 2019-05-29 1652
9b9d8632f51f360 Joseph Lo 2019-05-29 1653 /*
9b9d8632f51f360 Joseph Lo 2019-05-29 1654 * Step 24:
9b9d8632f51f360 Joseph Lo 2019-05-29 1655 * Save training results. Removed.
9b9d8632f51f360 Joseph Lo 2019-05-29 1656 */
9b9d8632f51f360 Joseph Lo 2019-05-29 1657
9b9d8632f51f360 Joseph Lo 2019-05-29 1658 /*
9b9d8632f51f360 Joseph Lo 2019-05-29 1659 * Step 25:
9b9d8632f51f360 Joseph Lo 2019-05-29 1660 * Program MC updown registers.
9b9d8632f51f360 Joseph Lo 2019-05-29 1661 */
9b9d8632f51f360 Joseph Lo 2019-05-29 1662 emc_dbg(emc, STEPS, "Step 25\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 1663
9b9d8632f51f360 Joseph Lo 2019-05-29 1664 if (next->rate > last->rate) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1665 for (i = 0; i < next->num_up_down; i++)
9b9d8632f51f360 Joseph Lo 2019-05-29 1666 mc_writel(emc->mc, next->la_scale_regs[i],
9b9d8632f51f360 Joseph Lo 2019-05-29 1667 emc->offsets->la_scale[i]);
9b9d8632f51f360 Joseph Lo 2019-05-29 1668
9b9d8632f51f360 Joseph Lo 2019-05-29 1669 tegra210_emc_timing_update(emc);
9b9d8632f51f360 Joseph Lo 2019-05-29 1670 }
9b9d8632f51f360 Joseph Lo 2019-05-29 1671
9b9d8632f51f360 Joseph Lo 2019-05-29 1672 /*
9b9d8632f51f360 Joseph Lo 2019-05-29 1673 * Step 26:
9b9d8632f51f360 Joseph Lo 2019-05-29 1674 * Restore ZCAL registers.
9b9d8632f51f360 Joseph Lo 2019-05-29 1675 */
9b9d8632f51f360 Joseph Lo 2019-05-29 1676 emc_dbg(emc, STEPS, "Step 26\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 1677
9b9d8632f51f360 Joseph Lo 2019-05-29 1678 if (dram_type == DRAM_TYPE_LPDDR4) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1679 tegra210_emc_set_shadow_bypass(emc, ACTIVE);
9b9d8632f51f360 Joseph Lo 2019-05-29 1680 emc_writel(emc, next->burst_regs[EMC_ZCAL_WAIT_CNT_INDEX],
9b9d8632f51f360 Joseph Lo 2019-05-29 1681 EMC_ZCAL_WAIT_CNT);
9b9d8632f51f360 Joseph Lo 2019-05-29 1682 emc_writel(emc, next->burst_regs[EMC_ZCAL_INTERVAL_INDEX],
9b9d8632f51f360 Joseph Lo 2019-05-29 1683 EMC_ZCAL_INTERVAL);
9b9d8632f51f360 Joseph Lo 2019-05-29 1684 tegra210_emc_set_shadow_bypass(emc, ASSEMBLY);
9b9d8632f51f360 Joseph Lo 2019-05-29 1685 }
9b9d8632f51f360 Joseph Lo 2019-05-29 1686
9b9d8632f51f360 Joseph Lo 2019-05-29 1687 if (dram_type != DRAM_TYPE_LPDDR4 && opt_zcal_en_cc &&
9b9d8632f51f360 Joseph Lo 2019-05-29 1688 !opt_short_zcal && opt_cc_short_zcal) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1689 udelay(2);
9b9d8632f51f360 Joseph Lo 2019-05-29 1690
9b9d8632f51f360 Joseph Lo 2019-05-29 1691 tegra210_emc_set_shadow_bypass(emc, ACTIVE);
9b9d8632f51f360 Joseph Lo 2019-05-29 1692 if (dram_type == DRAM_TYPE_LPDDR2)
9b9d8632f51f360 Joseph Lo 2019-05-29 1693 emc_writel(emc, next->burst_regs[EMC_MRS_WAIT_CNT_INDEX],
9b9d8632f51f360 Joseph Lo 2019-05-29 1694 EMC_MRS_WAIT_CNT);
9b9d8632f51f360 Joseph Lo 2019-05-29 1695 else if (dram_type == DRAM_TYPE_DDR3)
9b9d8632f51f360 Joseph Lo 2019-05-29 1696 emc_writel(emc, next->burst_regs[EMC_ZCAL_WAIT_CNT_INDEX],
9b9d8632f51f360 Joseph Lo 2019-05-29 1697 EMC_ZCAL_WAIT_CNT);
9b9d8632f51f360 Joseph Lo 2019-05-29 1698 tegra210_emc_set_shadow_bypass(emc, ASSEMBLY);
9b9d8632f51f360 Joseph Lo 2019-05-29 1699 }
9b9d8632f51f360 Joseph Lo 2019-05-29 1700
9b9d8632f51f360 Joseph Lo 2019-05-29 1701 /*
9b9d8632f51f360 Joseph Lo 2019-05-29 1702 * Step 27:
9b9d8632f51f360 Joseph Lo 2019-05-29 1703 * Restore EMC_CFG, FDPD registers.
9b9d8632f51f360 Joseph Lo 2019-05-29 1704 */
9b9d8632f51f360 Joseph Lo 2019-05-29 1705 emc_dbg(emc, STEPS, "Step 27\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 1706
9b9d8632f51f360 Joseph Lo 2019-05-29 1707 tegra210_emc_set_shadow_bypass(emc, ACTIVE);
9b9d8632f51f360 Joseph Lo 2019-05-29 1708 emc_writel(emc, next->burst_regs[EMC_CFG_INDEX], EMC_CFG);
9b9d8632f51f360 Joseph Lo 2019-05-29 1709 tegra210_emc_set_shadow_bypass(emc, ASSEMBLY);
9b9d8632f51f360 Joseph Lo 2019-05-29 1710 emc_writel(emc, next->emc_fdpd_ctrl_cmd_no_ramp,
9b9d8632f51f360 Joseph Lo 2019-05-29 1711 EMC_FDPD_CTRL_CMD_NO_RAMP);
9b9d8632f51f360 Joseph Lo 2019-05-29 1712 emc_writel(emc, next->emc_sel_dpd_ctrl, EMC_SEL_DPD_CTRL);
9b9d8632f51f360 Joseph Lo 2019-05-29 1713
9b9d8632f51f360 Joseph Lo 2019-05-29 1714 /*
9b9d8632f51f360 Joseph Lo 2019-05-29 1715 * Step 28:
9b9d8632f51f360 Joseph Lo 2019-05-29 1716 * Training recover. Removed.
9b9d8632f51f360 Joseph Lo 2019-05-29 1717 */
9b9d8632f51f360 Joseph Lo 2019-05-29 1718 emc_dbg(emc, STEPS, "Step 28\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 1719
9b9d8632f51f360 Joseph Lo 2019-05-29 1720 tegra210_emc_set_shadow_bypass(emc, ACTIVE);
9b9d8632f51f360 Joseph Lo 2019-05-29 1721 emc_writel(emc,
9b9d8632f51f360 Joseph Lo 2019-05-29 1722 next->burst_regs[EMC_PMACRO_AUTOCAL_CFG_COMMON_INDEX],
9b9d8632f51f360 Joseph Lo 2019-05-29 1723 EMC_PMACRO_AUTOCAL_CFG_COMMON);
9b9d8632f51f360 Joseph Lo 2019-05-29 1724 tegra210_emc_set_shadow_bypass(emc, ASSEMBLY);
9b9d8632f51f360 Joseph Lo 2019-05-29 1725
9b9d8632f51f360 Joseph Lo 2019-05-29 1726 /*
9b9d8632f51f360 Joseph Lo 2019-05-29 1727 * Step 29:
9b9d8632f51f360 Joseph Lo 2019-05-29 1728 * Power fix WAR.
9b9d8632f51f360 Joseph Lo 2019-05-29 1729 */
9b9d8632f51f360 Joseph Lo 2019-05-29 1730 emc_dbg(emc, STEPS, "Step 29\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 1731
9b9d8632f51f360 Joseph Lo 2019-05-29 1732 emc_writel(emc, EMC_PMACRO_CFG_PM_GLOBAL_0_DISABLE_CFG_BYTE0 |
9b9d8632f51f360 Joseph Lo 2019-05-29 1733 EMC_PMACRO_CFG_PM_GLOBAL_0_DISABLE_CFG_BYTE1 |
9b9d8632f51f360 Joseph Lo 2019-05-29 1734 EMC_PMACRO_CFG_PM_GLOBAL_0_DISABLE_CFG_BYTE2 |
9b9d8632f51f360 Joseph Lo 2019-05-29 1735 EMC_PMACRO_CFG_PM_GLOBAL_0_DISABLE_CFG_BYTE3 |
9b9d8632f51f360 Joseph Lo 2019-05-29 1736 EMC_PMACRO_CFG_PM_GLOBAL_0_DISABLE_CFG_BYTE4 |
9b9d8632f51f360 Joseph Lo 2019-05-29 1737 EMC_PMACRO_CFG_PM_GLOBAL_0_DISABLE_CFG_BYTE5 |
9b9d8632f51f360 Joseph Lo 2019-05-29 1738 EMC_PMACRO_CFG_PM_GLOBAL_0_DISABLE_CFG_BYTE6 |
9b9d8632f51f360 Joseph Lo 2019-05-29 1739 EMC_PMACRO_CFG_PM_GLOBAL_0_DISABLE_CFG_BYTE7,
9b9d8632f51f360 Joseph Lo 2019-05-29 1740 EMC_PMACRO_CFG_PM_GLOBAL_0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1741 emc_writel(emc, EMC_PMACRO_TRAINING_CTRL_0_CH0_TRAINING_E_WRPTR,
9b9d8632f51f360 Joseph Lo 2019-05-29 1742 EMC_PMACRO_TRAINING_CTRL_0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1743 emc_writel(emc, EMC_PMACRO_TRAINING_CTRL_1_CH1_TRAINING_E_WRPTR,
9b9d8632f51f360 Joseph Lo 2019-05-29 1744 EMC_PMACRO_TRAINING_CTRL_1);
9b9d8632f51f360 Joseph Lo 2019-05-29 1745 emc_writel(emc, 0, EMC_PMACRO_CFG_PM_GLOBAL_0);
9b9d8632f51f360 Joseph Lo 2019-05-29 1746
9b9d8632f51f360 Joseph Lo 2019-05-29 1747 /*
9b9d8632f51f360 Joseph Lo 2019-05-29 1748 * Step 30:
9b9d8632f51f360 Joseph Lo 2019-05-29 1749 * Re-enable autocal.
9b9d8632f51f360 Joseph Lo 2019-05-29 1750 */
9b9d8632f51f360 Joseph Lo 2019-05-29 1751 emc_dbg(emc, STEPS, "Step 30: Re-enable DLL and AUTOCAL\n");
9b9d8632f51f360 Joseph Lo 2019-05-29 1752
9b9d8632f51f360 Joseph Lo 2019-05-29 1753 if (next->burst_regs[EMC_CFG_DIG_DLL_INDEX] & EMC_CFG_DIG_DLL_CFG_DLL_EN) {
9b9d8632f51f360 Joseph Lo 2019-05-29 1754 value = emc_readl(emc, EMC_CFG_DIG_DLL);
9b9d8632f51f360 Joseph Lo 2019-05-29 1755 value |= EMC_CFG_DIG_DLL_CFG_DLL_STALL_ALL_TRAFFIC;
9b9d8632f51f360 Joseph Lo 2019-05-29 1756 value |= EMC_CFG_DIG_DLL_CFG_DLL_EN;
9b9d8632f51f360 Joseph Lo 2019-05-29 1757 value &= ~EMC_CFG_DIG_DLL_CFG_DLL_STALL_RW_UNTIL_LOCK;
9b9d8632f51f360 Joseph Lo 2019-05-29 1758 value &= ~EMC_CFG_DIG_DLL_CFG_DLL_STALL_ALL_UNTIL_LOCK;
9b9d8632f51f360 Joseph Lo 2019-05-29 1759 value = (value & ~EMC_CFG_DIG_DLL_CFG_DLL_MODE_MASK) |
9b9d8632f51f360 Joseph Lo 2019-05-29 1760 (2 << EMC_CFG_DIG_DLL_CFG_DLL_MODE_SHIFT);
9b9d8632f51f360 Joseph Lo 2019-05-29 1761 emc_writel(emc, value, EMC_CFG_DIG_DLL);
9b9d8632f51f360 Joseph Lo 2019-05-29 1762 tegra210_emc_timing_update(emc);
9b9d8632f51f360 Joseph Lo 2019-05-29 1763 }
9b9d8632f51f360 Joseph Lo 2019-05-29 1764
9b9d8632f51f360 Joseph Lo 2019-05-29 1765 emc_writel(emc, next->emc_auto_cal_config, EMC_AUTO_CAL_CONFIG);
9b9d8632f51f360 Joseph Lo 2019-05-29 1766
9b9d8632f51f360 Joseph Lo 2019-05-29 1767 /* Done! Yay. */
9b9d8632f51f360 Joseph Lo 2019-05-29 1768 }
9b9d8632f51f360 Joseph Lo 2019-05-29 1769

:::::: The code at line 1035 was first introduced by commit
:::::: 9b9d8632f51f3609dfdfe8efc3c1e4e773c6c385 memory: tegra: Add EMC scaling sequence code for Tegra210

:::::: TO: Joseph Lo <josephl@nvidia.com>
:::::: CC: Thierry Reding <treding@nvidia.com>

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0-DAY CI Kernel Test Service, Intel Corporation