X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=arch%2Farm%2Fcpu%2Farmv7%2Fomap-common%2Femif-common.c;h=cd6289b4fca0827e40819be8f7253137c25d8f18;hb=7f673c99c2d8d1aa21996c5b914f06d784b080ca;hp=9eb1279d4112699d93c9ca511d267b7af1aaeeba;hpb=0ce033d2582129243aca10d3072a221386bbba44;p=platform%2Fkernel%2Fu-boot.git diff --git a/arch/arm/cpu/armv7/omap-common/emif-common.c b/arch/arm/cpu/armv7/omap-common/emif-common.c index 9eb1279..cd6289b 100644 --- a/arch/arm/cpu/armv7/omap-common/emif-common.c +++ b/arch/arm/cpu/armv7/omap-common/emif-common.c @@ -6,28 +6,12 @@ * * Aneesh V * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA + * SPDX-License-Identifier: GPL-2.0+ */ #include #include -#include +#include #include #include #include @@ -66,20 +50,6 @@ inline u32 emif_num(u32 base) return 0; } -/* - * Get SDRAM type connected to EMIF. - * Assuming similar SDRAM parts are connected to both EMIF's - * which is typically the case. So it is sufficient to get - * SDRAM type from EMIF1. - */ -u32 emif_sdram_type() -{ - struct emif_reg_struct *emif = (struct emif_reg_struct *)EMIF1_BASE; - - return (readl(&emif->emif_sdram_config) & - EMIF_REG_SDRAM_TYPE_MASK) >> EMIF_REG_SDRAM_TYPE_SHIFT; -} - static inline u32 get_mr(u32 base, u32 cs, u32 mr_addr) { u32 mr; @@ -169,7 +139,7 @@ static void lpddr2_init(u32 base, const struct emif_regs *regs) * un-locked frequency & default RL */ writel(regs->sdram_config_init, &emif->emif_sdram_config); - writel(regs->emif_ddr_phy_ctlr_1, &emif->emif_ddr_phy_ctrl_1); + writel(regs->emif_ddr_phy_ctlr_1_init, &emif->emif_ddr_phy_ctrl_1); do_ext_phy_settings(base, regs); @@ -209,7 +179,8 @@ void emif_update_timings(u32 base, const struct emif_regs *regs) writel(regs->temp_alert_config, &emif->emif_temp_alert_config); writel(regs->emif_ddr_phy_ctlr_1, &emif->emif_ddr_phy_ctrl_1_shdw); - if (omap_revision() >= OMAP5430_ES1_0) { + if ((omap_revision() >= OMAP5430_ES1_0) || + (omap_revision() == DRA752_ES1_0)) { writel(EMIF_L3_CONFIG_VAL_SYS_10_MPU_5_LL_0, &emif->emif_l3_config); } else if (omap_revision() >= OMAP4460_ES1_0) { @@ -221,7 +192,7 @@ void emif_update_timings(u32 base, const struct emif_regs *regs) } } -static void ddr3_leveling(u32 base, const struct emif_regs *regs) +static void omap5_ddr3_leveling(u32 base, const struct emif_regs *regs) { struct emif_reg_struct *emif = (struct emif_reg_struct *)base; @@ -232,35 +203,86 @@ static void ddr3_leveling(u32 base, const struct emif_regs *regs) /* * Set invert_clkout (if activated)--DDR_PHYCTRL_1 - * Invert clock adds an additional half cycle delay on the command - * interface. The additional half cycle, is usually meant to enable - * leveling in the situation that DQS is later than CK on the board.It - * also helps provide some additional margin for leveling. + * Invert clock adds an additional half cycle delay on the + * command interface. The additional half cycle, is usually + * meant to enable leveling in the situation that DQS is later + * than CK on the board.It also helps provide some additional + * margin for leveling. */ - writel(regs->emif_ddr_phy_ctlr_1, &emif->emif_ddr_phy_ctrl_1); - writel(regs->emif_ddr_phy_ctlr_1, &emif->emif_ddr_phy_ctrl_1_shdw); + writel(regs->emif_ddr_phy_ctlr_1, + &emif->emif_ddr_phy_ctrl_1); + + writel(regs->emif_ddr_phy_ctlr_1, + &emif->emif_ddr_phy_ctrl_1_shdw); __udelay(130); writel(((LP_MODE_DISABLE << EMIF_REG_LP_MODE_SHIFT) - & EMIF_REG_LP_MODE_MASK), &emif->emif_pwr_mgmt_ctrl); + & EMIF_REG_LP_MODE_MASK), &emif->emif_pwr_mgmt_ctrl); /* Launch Full leveling */ writel(DDR3_FULL_LVL, &emif->emif_rd_wr_lvl_ctl); /* Wait till full leveling is complete */ readl(&emif->emif_rd_wr_lvl_ctl); - __udelay(130); + __udelay(130); /* Read data eye leveling no of samples */ config_data_eye_leveling_samples(base); - /* Launch 8 incremental WR_LVL- to compensate for PHY limitation */ - writel(0x2 << EMIF_REG_WRLVLINC_INT_SHIFT, &emif->emif_rd_wr_lvl_ctl); + /* + * Launch 8 incremental WR_LVL- to compensate for + * PHY limitation. + */ + writel(0x2 << EMIF_REG_WRLVLINC_INT_SHIFT, + &emif->emif_rd_wr_lvl_ctl); + __udelay(130); /* Launch Incremental leveling */ writel(DDR3_INC_LVL, &emif->emif_rd_wr_lvl_ctl); - __udelay(130); + __udelay(130); +} + +static void dra7_ddr3_leveling(u32 base, const struct emif_regs *regs) +{ + struct emif_reg_struct *emif = (struct emif_reg_struct *)base; + + u32 fifo_reg; + + fifo_reg = readl(&emif->emif_ddr_fifo_misaligned_clear_1); + writel(fifo_reg | 0x00000100, + &emif->emif_ddr_fifo_misaligned_clear_1); + + fifo_reg = readl(&emif->emif_ddr_fifo_misaligned_clear_2); + writel(fifo_reg | 0x00000100, + &emif->emif_ddr_fifo_misaligned_clear_2); + + /* Launch Full leveling */ + writel(DDR3_FULL_LVL, &emif->emif_rd_wr_lvl_ctl); + + /* Wait till full leveling is complete */ + readl(&emif->emif_rd_wr_lvl_ctl); + __udelay(130); + + /* Read data eye leveling no of samples */ + config_data_eye_leveling_samples(base); + + /* + * Disable leveling. This is because if leveling is kept + * enabled, then PHY triggers a false leveling during + * EMIF-idle scenario which results in wrong delay + * values getting updated. After this the EMIF becomes + * unaccessible. So disable it after the first time + */ + writel(0x0, &emif->emif_rd_wr_lvl_rmp_ctl); +} + +static void ddr3_leveling(u32 base, const struct emif_regs *regs) +{ + if (is_omap54xx()) + omap5_ddr3_leveling(base, regs); + else + dra7_ddr3_leveling(base, regs); } static void ddr3_init(u32 base, const struct emif_regs *regs) @@ -273,8 +295,6 @@ static void ddr3_init(u32 base, const struct emif_regs *regs) * defined, contents of mode Registers must be fully initialized. * H/W takes care of this initialization */ - writel(regs->sdram_config_init, &emif->emif_sdram_config); - writel(regs->emif_ddr_phy_ctlr_1_init, &emif->emif_ddr_phy_ctrl_1); /* Update timing registers */ @@ -285,7 +305,19 @@ static void ddr3_init(u32 base, const struct emif_regs *regs) writel(regs->ref_ctrl, &emif->emif_sdram_ref_ctrl); writel(regs->read_idle_ctrl, &emif->emif_read_idlectrl); - do_ext_phy_settings(base, regs); + /* + * The same sequence should work on OMAP5432 as well. But strange that + * it is not working + */ + if (omap_revision() == DRA752_ES1_0) { + do_ext_phy_settings(base, regs); + writel(regs->sdram_config2, &emif->emif_lpddr2_nvm_config); + writel(regs->sdram_config_init, &emif->emif_sdram_config); + } else { + writel(regs->sdram_config2, &emif->emif_lpddr2_nvm_config); + writel(regs->sdram_config_init, &emif->emif_sdram_config); + do_ext_phy_settings(base, regs); + } /* enable leveling */ writel(regs->emif_rd_wr_lvl_rmp_ctl, &emif->emif_rd_wr_lvl_rmp_ctl); @@ -655,20 +687,27 @@ static u32 get_ddr_phy_ctrl_1(u32 freq, u8 RL) return phy; } -static u32 get_emif_mem_size(struct emif_device_details *devices) +static u32 get_emif_mem_size(u32 base) { u32 size_mbytes = 0, temp; + struct emif_device_details dev_details; + struct lpddr2_device_details cs0_dev_details, cs1_dev_details; + u32 emif_nr = emif_num(base); - if (!devices) - return 0; + emif_reset_phy(base); + dev_details.cs0_device_details = emif_get_device_details(emif_nr, CS0, + &cs0_dev_details); + dev_details.cs1_device_details = emif_get_device_details(emif_nr, CS1, + &cs1_dev_details); + emif_reset_phy(base); - if (devices->cs0_device_details) { - temp = devices->cs0_device_details->density; + if (dev_details.cs0_device_details) { + temp = dev_details.cs0_device_details->density; size_mbytes += lpddr2_density_2_size_in_mbytes[temp]; } - if (devices->cs1_device_details) { - temp = devices->cs1_device_details->density; + if (dev_details.cs1_device_details) { + temp = dev_details.cs1_device_details->density; size_mbytes += lpddr2_density_2_size_in_mbytes[temp]; } /* convert to bytes */ @@ -1040,13 +1079,9 @@ static void do_sdram_init(u32 base) /* Return if no devices on this EMIF */ if (!dev_details.cs0_device_details && !dev_details.cs1_device_details) { - emif_sizes[emif_nr - 1] = 0; return; } - if (!in_sdram) - emif_sizes[emif_nr - 1] = get_emif_mem_size(&dev_details); - /* * Get device timings: * - Default timings specified by JESD209-2 if @@ -1072,6 +1107,11 @@ static void do_sdram_init(u32 base) else ddr3_init(base, regs); } + if (warm_reset() && (emif_sdram_type() == EMIF_SDRAM_TYPE_DDR3)) { + set_lpmode_selfrefresh(base); + emif_reset_phy(base); + ddr3_leveling(base, regs); + } /* Write to the shadow registers */ emif_update_timings(base, regs); @@ -1108,8 +1148,8 @@ void dmm_init(u32 base) mapped_size = 0; section_cnt = 3; sys_addr = CONFIG_SYS_SDRAM_BASE; - emif1_size = emif_sizes[0]; - emif2_size = emif_sizes[1]; + emif1_size = get_emif_mem_size(EMIF1_BASE); + emif2_size = get_emif_mem_size(EMIF2_BASE); debug("emif1_size 0x%x emif2_size 0x%x\n", emif1_size, emif2_size); if (!emif1_size && !emif2_size) @@ -1172,6 +1212,9 @@ void dmm_init(u32 base) /* TRAP for invalid TILER mappings in section 0 */ lis_map_regs_calculated.dmm_lisa_map_0 = DMM_LISA_MAP_0_INVAL_ADDR_TRAP; + if (omap_revision() >= OMAP4460_ES1_0) + lis_map_regs_calculated.is_ma_present = 1; + lisa_map_regs = &lis_map_regs_calculated; #endif struct dmm_lisa_map_regs *hw_lisa_map_regs = @@ -1229,6 +1272,42 @@ void dmm_init(u32 base) } +static void do_bug0039_workaround(u32 base) +{ + u32 val, i, clkctrl; + struct emif_reg_struct *emif_base = (struct emif_reg_struct *)base; + const struct read_write_regs *bug_00339_regs; + u32 iterations; + u32 *phy_status_base = &emif_base->emif_ddr_phy_status[0]; + u32 *phy_ctrl_base = &emif_base->emif_ddr_ext_phy_ctrl_1; + + if (is_dra7xx()) + phy_status_base++; + + bug_00339_regs = get_bug_regs(&iterations); + + /* Put EMIF in to idle */ + clkctrl = __raw_readl((*prcm)->cm_memif_clkstctrl); + __raw_writel(0x0, (*prcm)->cm_memif_clkstctrl); + + /* Copy the phy status registers in to phy ctrl shadow registers */ + for (i = 0; i < iterations; i++) { + val = __raw_readl(phy_status_base + + bug_00339_regs[i].read_reg - 1); + + __raw_writel(val, phy_ctrl_base + + ((bug_00339_regs[i].write_reg - 1) << 1)); + + __raw_writel(val, phy_ctrl_base + + (bug_00339_regs[i].write_reg << 1) - 1); + } + + /* Disable leveling */ + writel(0x0, &emif_base->emif_rd_wr_lvl_rmp_ctl); + + __raw_writel(clkctrl, (*prcm)->cm_memif_clkstctrl); +} + /* * SDRAM initialization: * SDRAM initialization has two parts: @@ -1259,10 +1338,10 @@ void sdram_init(void) in_sdram = running_from_sdram(); debug("in_sdram = %d\n", in_sdram); - if (!(in_sdram || warm_reset())) { - if (sdram_type == EMIF_SDRAM_TYPE_LPDDR2) + if (!in_sdram) { + if ((sdram_type == EMIF_SDRAM_TYPE_LPDDR2) && !warm_reset()) bypass_dpll((*prcm)->cm_clkmode_dpll_core); - else + else if (sdram_type == EMIF_SDRAM_TYPE_DDR3) writel(CM_DLL_CTRL_NO_OVERRIDE, (*prcm)->cm_dll_ctrl); } @@ -1304,5 +1383,11 @@ void sdram_init(void) debug("get_ram_size() successful"); } + if (sdram_type == EMIF_SDRAM_TYPE_DDR3 && + (!in_sdram && !warm_reset())) { + do_bug0039_workaround(EMIF1_BASE); + do_bug0039_workaround(EMIF2_BASE); + } + debug("<