// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause /* * (C) Copyright 2017 Rockchip Electronics Co., Ltd */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include DECLARE_GLOBAL_DATA_PTR; struct chan_info { struct rk322x_ddr_pctl *pctl; struct rk322x_ddr_phy *phy; struct rk322x_service_sys *msch; }; struct dram_info { struct chan_info chan[1]; struct ram_info info; struct clk ddr_clk; struct rk322x_cru *cru; struct rk322x_grf *grf; }; struct rk322x_sdram_params { #if CONFIG_IS_ENABLED(OF_PLATDATA) struct dtd_rockchip_rk3228_dmc of_plat; #endif struct rk322x_sdram_channel ch[1]; struct rk322x_pctl_timing pctl_timing; struct rk322x_phy_timing phy_timing; struct rk322x_base_params base; int num_channels; struct regmap *map; }; #ifdef CONFIG_TPL_BUILD /* * [7:6] bank(n:n bit bank) * [5:4] row(13+n) * [3] cs(0:1 cs, 1:2 cs) * [2:1] bank(n:n bit bank) * [0] col(10+n) */ const char ddr_cfg_2_rbc[] = { ((0 << 6) | (0 << 4) | (0 << 3) | (1 << 2) | 1), ((0 << 6) | (1 << 4) | (0 << 3) | (1 << 2) | 1), ((0 << 6) | (2 << 4) | (0 << 3) | (1 << 2) | 1), ((0 << 6) | (3 << 4) | (0 << 3) | (1 << 2) | 1), ((0 << 6) | (1 << 4) | (0 << 3) | (1 << 2) | 2), ((0 << 6) | (2 << 4) | (0 << 3) | (1 << 2) | 2), ((0 << 6) | (3 << 4) | (0 << 3) | (1 << 2) | 2), ((0 << 6) | (0 << 4) | (0 << 3) | (1 << 2) | 0), ((0 << 6) | (1 << 4) | (0 << 3) | (1 << 2) | 0), ((0 << 6) | (2 << 4) | (0 << 3) | (1 << 2) | 0), ((0 << 6) | (3 << 4) | (0 << 3) | (1 << 2) | 0), ((0 << 6) | (2 << 4) | (0 << 3) | (0 << 2) | 1), ((1 << 6) | (1 << 4) | (0 << 3) | (0 << 2) | 2), ((1 << 6) | (1 << 4) | (0 << 3) | (0 << 2) | 1), ((0 << 6) | (3 << 4) | (1 << 3) | (1 << 2) | 1), ((0 << 6) | (3 << 4) | (1 << 3) | (1 << 2) | 0), }; static void copy_to_reg(u32 *dest, const u32 *src, u32 n) { int i; for (i = 0; i < n / sizeof(u32); i++) { writel(*src, dest); src++; dest++; } } void phy_pctrl_reset(struct rk322x_cru *cru, struct rk322x_ddr_phy *ddr_phy) { rk_clrsetreg(&cru->cru_softrst_con[5], 1 << DDRCTRL_PSRST_SHIFT | 1 << DDRCTRL_SRST_SHIFT | 1 << DDRPHY_PSRST_SHIFT | 1 << DDRPHY_SRST_SHIFT, 1 << DDRCTRL_PSRST_SHIFT | 1 << DDRCTRL_SRST_SHIFT | 1 << DDRPHY_PSRST_SHIFT | 1 << DDRPHY_SRST_SHIFT); udelay(10); rk_clrreg(&cru->cru_softrst_con[5], 1 << DDRPHY_PSRST_SHIFT | 1 << DDRPHY_SRST_SHIFT); udelay(10); rk_clrreg(&cru->cru_softrst_con[5], 1 << DDRCTRL_PSRST_SHIFT | 1 << DDRCTRL_SRST_SHIFT); udelay(10); clrbits_le32(&ddr_phy->ddrphy_reg[0], SOFT_RESET_MASK << SOFT_RESET_SHIFT); udelay(10); setbits_le32(&ddr_phy->ddrphy_reg[0], SOFT_DERESET_ANALOG); udelay(5); setbits_le32(&ddr_phy->ddrphy_reg[0], SOFT_DERESET_DIGITAL); udelay(1); } void phy_dll_bypass_set(struct rk322x_ddr_phy *ddr_phy, u32 freq) { u32 tmp; setbits_le32(&ddr_phy->ddrphy_reg[0x13], 0x10); setbits_le32(&ddr_phy->ddrphy_reg[0x26], 0x10); setbits_le32(&ddr_phy->ddrphy_reg[0x36], 0x10); setbits_le32(&ddr_phy->ddrphy_reg[0x46], 0x10); setbits_le32(&ddr_phy->ddrphy_reg[0x56], 0x10); clrbits_le32(&ddr_phy->ddrphy_reg[0x14], 0x8); clrbits_le32(&ddr_phy->ddrphy_reg[0x27], 0x8); clrbits_le32(&ddr_phy->ddrphy_reg[0x37], 0x8); clrbits_le32(&ddr_phy->ddrphy_reg[0x47], 0x8); clrbits_le32(&ddr_phy->ddrphy_reg[0x57], 0x8); if (freq <= 400) setbits_le32(&ddr_phy->ddrphy_reg[0xa4], 0x1f); else clrbits_le32(&ddr_phy->ddrphy_reg[0xa4], 0x1f); if (freq <= 680) tmp = 3; else tmp = 2; writel(tmp, &ddr_phy->ddrphy_reg[0x28]); writel(tmp, &ddr_phy->ddrphy_reg[0x38]); writel(tmp, &ddr_phy->ddrphy_reg[0x48]); writel(tmp, &ddr_phy->ddrphy_reg[0x58]); } static void send_command(struct rk322x_ddr_pctl *pctl, u32 rank, u32 cmd, u32 arg) { writel((START_CMD | (rank << 20) | arg | cmd), &pctl->mcmd); udelay(1); while (readl(&pctl->mcmd) & START_CMD) ; } static void memory_init(struct chan_info *chan, struct rk322x_sdram_params *sdram_params) { struct rk322x_ddr_pctl *pctl = chan->pctl; u32 dramtype = sdram_params->base.dramtype; if (dramtype == DDR3) { send_command(pctl, 3, DESELECT_CMD, 0); udelay(1); send_command(pctl, 3, PREA_CMD, 0); send_command(pctl, 3, MRS_CMD, (0x02 & BANK_ADDR_MASK) << BANK_ADDR_SHIFT | (sdram_params->phy_timing.mr[2] & CMD_ADDR_MASK) << CMD_ADDR_SHIFT); send_command(pctl, 3, MRS_CMD, (0x03 & BANK_ADDR_MASK) << BANK_ADDR_SHIFT | (sdram_params->phy_timing.mr[3] & CMD_ADDR_MASK) << CMD_ADDR_SHIFT); send_command(pctl, 3, MRS_CMD, (0x01 & BANK_ADDR_MASK) << BANK_ADDR_SHIFT | (sdram_params->phy_timing.mr[1] & CMD_ADDR_MASK) << CMD_ADDR_SHIFT); send_command(pctl, 3, MRS_CMD, (0x00 & BANK_ADDR_MASK) << BANK_ADDR_SHIFT | ((sdram_params->phy_timing.mr[0] | DDR3_DLL_RESET) & CMD_ADDR_MASK) << CMD_ADDR_SHIFT); send_command(pctl, 3, ZQCL_CMD, 0); } else { send_command(pctl, 3, MRS_CMD, (0x63 & LPDDR23_MA_MASK) << LPDDR23_MA_SHIFT | (0 & LPDDR23_OP_MASK) << LPDDR23_OP_SHIFT); udelay(10); send_command(pctl, 3, MRS_CMD, (0x10 & LPDDR23_MA_MASK) << LPDDR23_MA_SHIFT | (0xff & LPDDR23_OP_MASK) << LPDDR23_OP_SHIFT); udelay(1); send_command(pctl, 3, MRS_CMD, (0x10 & LPDDR23_MA_MASK) << LPDDR23_MA_SHIFT | (0xff & LPDDR23_OP_MASK) << LPDDR23_OP_SHIFT); udelay(1); send_command(pctl, 3, MRS_CMD, (1 & LPDDR23_MA_MASK) << LPDDR23_MA_SHIFT | (sdram_params->phy_timing.mr[1] & LPDDR23_OP_MASK) << LPDDR23_OP_SHIFT); send_command(pctl, 3, MRS_CMD, (2 & LPDDR23_MA_MASK) << LPDDR23_MA_SHIFT | (sdram_params->phy_timing.mr[2] & LPDDR23_OP_MASK) << LPDDR23_OP_SHIFT); send_command(pctl, 3, MRS_CMD, (3 & LPDDR23_MA_MASK) << LPDDR23_MA_SHIFT | (sdram_params->phy_timing.mr[3] & LPDDR23_OP_MASK) << LPDDR23_OP_SHIFT); if (dramtype == LPDDR3) send_command(pctl, 3, MRS_CMD, (11 & LPDDR23_MA_MASK) << LPDDR23_MA_SHIFT | (sdram_params->phy_timing.mr11 & LPDDR23_OP_MASK) << LPDDR23_OP_SHIFT); } } static u32 data_training(struct chan_info *chan) { struct rk322x_ddr_phy *ddr_phy = chan->phy; struct rk322x_ddr_pctl *pctl = chan->pctl; u32 value; u32 bw = (readl(&ddr_phy->ddrphy_reg[0]) >> 4) & 0xf; u32 ret; /* disable auto refresh */ value = readl(&pctl->trefi) | (1 << 31); writel(1 << 31, &pctl->trefi); clrsetbits_le32(&ddr_phy->ddrphy_reg[2], 0x30, DQS_SQU_CAL_SEL_CS0); setbits_le32(&ddr_phy->ddrphy_reg[2], DQS_SQU_CAL_START); udelay(30); ret = readl(&ddr_phy->ddrphy_reg[0xff]); clrbits_le32(&ddr_phy->ddrphy_reg[2], DQS_SQU_CAL_START); /* * since data training will take about 20us, so send some auto * refresh(about 7.8us) to complement the lost time */ send_command(pctl, 3, PREA_CMD, 0); send_command(pctl, 3, REF_CMD, 0); writel(value, &pctl->trefi); if (ret & 0x10) { ret = -1; } else { ret = (ret & 0xf) ^ bw; ret = (ret == 0) ? 0 : -1; } return ret; } static void move_to_config_state(struct rk322x_ddr_pctl *pctl) { unsigned int state; while (1) { state = readl(&pctl->stat) & PCTL_STAT_MASK; switch (state) { case LOW_POWER: writel(WAKEUP_STATE, &pctl->sctl); while ((readl(&pctl->stat) & PCTL_STAT_MASK) != ACCESS) ; /* * If at low power state, need wakeup first, and then * enter the config, so fallthrough */ case ACCESS: /* fallthrough */ case INIT_MEM: writel(CFG_STATE, &pctl->sctl); while ((readl(&pctl->stat) & PCTL_STAT_MASK) != CONFIG) ; break; case CONFIG: return; default: break; } } } static void move_to_access_state(struct rk322x_ddr_pctl *pctl) { unsigned int state; while (1) { state = readl(&pctl->stat) & PCTL_STAT_MASK; switch (state) { case LOW_POWER: writel(WAKEUP_STATE, &pctl->sctl); while ((readl(&pctl->stat) & PCTL_STAT_MASK) != ACCESS) ; break; case INIT_MEM: writel(CFG_STATE, &pctl->sctl); while ((readl(&pctl->stat) & PCTL_STAT_MASK) != CONFIG) ; /* fallthrough */ case CONFIG: writel(GO_STATE, &pctl->sctl); while ((readl(&pctl->stat) & PCTL_STAT_MASK) != ACCESS) ; break; case ACCESS: return; default: break; } } } static void move_to_lowpower_state(struct rk322x_ddr_pctl *pctl) { unsigned int state; while (1) { state = readl(&pctl->stat) & PCTL_STAT_MASK; switch (state) { case INIT_MEM: writel(CFG_STATE, &pctl->sctl); while ((readl(&pctl->stat) & PCTL_STAT_MASK) != CONFIG) ; /* fallthrough */ case CONFIG: writel(GO_STATE, &pctl->sctl); while ((readl(&pctl->stat) & PCTL_STAT_MASK) != ACCESS) ; break; case ACCESS: writel(SLEEP_STATE, &pctl->sctl); while ((readl(&pctl->stat) & PCTL_STAT_MASK) != LOW_POWER) ; break; case LOW_POWER: return; default: break; } } } /* pctl should in low power mode when call this function */ static void phy_softreset(struct dram_info *dram) { struct rk322x_ddr_phy *ddr_phy = dram->chan[0].phy; struct rk322x_grf *grf = dram->grf; writel(GRF_DDRPHY_BUFFEREN_CORE_EN, &grf->soc_con[0]); clrbits_le32(&ddr_phy->ddrphy_reg[0], 0x3 << 2); udelay(1); setbits_le32(&ddr_phy->ddrphy_reg[0], 1 << 2); udelay(5); setbits_le32(&ddr_phy->ddrphy_reg[0], 1 << 3); writel(GRF_DDRPHY_BUFFEREN_CORE_DIS, &grf->soc_con[0]); } /* bw: 2: 32bit, 1:16bit */ static void set_bw(struct dram_info *dram, u32 bw) { struct rk322x_ddr_pctl *pctl = dram->chan[0].pctl; struct rk322x_ddr_phy *ddr_phy = dram->chan[0].phy; struct rk322x_grf *grf = dram->grf; if (bw == 1) { setbits_le32(&pctl->ppcfg, 1); clrbits_le32(&ddr_phy->ddrphy_reg[0], 0xc << 4); writel(GRF_MSCH_NOC_16BIT_EN, &grf->soc_con[0]); clrbits_le32(&ddr_phy->ddrphy_reg[0x46], 0x8); clrbits_le32(&ddr_phy->ddrphy_reg[0x56], 0x8); } else { clrbits_le32(&pctl->ppcfg, 1); setbits_le32(&ddr_phy->ddrphy_reg[0], 0xf << 4); writel(GRF_DDR_32BIT_EN | GRF_MSCH_NOC_32BIT_EN, &grf->soc_con[0]); setbits_le32(&ddr_phy->ddrphy_reg[0x46], 0x8); setbits_le32(&ddr_phy->ddrphy_reg[0x56], 0x8); } } static void pctl_cfg(struct rk322x_ddr_pctl *pctl, struct rk322x_sdram_params *sdram_params, struct rk322x_grf *grf) { u32 burst_len; u32 bw; u32 dramtype = sdram_params->base.dramtype; if (sdram_params->ch[0].bw == 2) bw = GRF_DDR_32BIT_EN | GRF_MSCH_NOC_32BIT_EN; else bw = GRF_MSCH_NOC_16BIT_EN; writel(DFI_INIT_START | DFI_DATA_BYTE_DISABLE_EN, &pctl->dfistcfg0); writel(DFI_DRAM_CLK_SR_EN | DFI_DRAM_CLK_DPD_EN, &pctl->dfistcfg1); writel(DFI_PARITY_INTR_EN | DFI_PARITY_EN, &pctl->dfistcfg2); writel(0x51010, &pctl->dfilpcfg0); writel(1, &pctl->dfitphyupdtype0); writel(0x0d, &pctl->dfitphyrdlat); writel(0, &pctl->dfitphywrdata); writel(0, &pctl->dfiupdcfg); copy_to_reg(&pctl->togcnt1u, &sdram_params->pctl_timing.togcnt1u, sizeof(struct rk322x_pctl_timing)); if (dramtype == DDR3) { writel((1 << 3) | (1 << 11), &pctl->dfiodtcfg); writel(7 << 16, &pctl->dfiodtcfg1); writel((readl(&pctl->tcl) - 1) / 2 - 1, &pctl->dfitrddataen); writel((readl(&pctl->tcwl) - 1) / 2 - 1, &pctl->dfitphywrlat); writel(500, &pctl->trsth); writel(0 << MDDR_LPDDR2_CLK_STOP_IDLE_SHIFT | DDR3_EN | DDR2_DDR3_BL_8 | (6 - 4) << TFAW_SHIFT | PD_EXIT_SLOW | 1 << PD_TYPE_SHIFT | 0 << PD_IDLE_SHIFT, &pctl->mcfg); writel(bw | GRF_DDR3_EN, &grf->soc_con[0]); } else { if (sdram_params->phy_timing.bl & PHT_BL_8) burst_len = MDDR_LPDDR2_BL_8; else burst_len = MDDR_LPDDR2_BL_4; writel(readl(&pctl->tcl) / 2 - 1, &pctl->dfitrddataen); writel(readl(&pctl->tcwl) / 2 - 1, &pctl->dfitphywrlat); writel(0, &pctl->trsth); if (dramtype == LPDDR2) { writel(0 << MDDR_LPDDR2_CLK_STOP_IDLE_SHIFT | LPDDR2_S4 | LPDDR2_EN | burst_len | (6 - 4) << TFAW_SHIFT | PD_EXIT_FAST | 1 << PD_TYPE_SHIFT | 0 << PD_IDLE_SHIFT, &pctl->mcfg); writel(0, &pctl->dfiodtcfg); writel(0, &pctl->dfiodtcfg1); } else { writel(0 << MDDR_LPDDR2_CLK_STOP_IDLE_SHIFT | LPDDR2_S4 | LPDDR3_EN | burst_len | (6 - 4) << TFAW_SHIFT | PD_EXIT_FAST | 1 << PD_TYPE_SHIFT | 0 << PD_IDLE_SHIFT, &pctl->mcfg); writel((1 << 3) | (1 << 2), &pctl->dfiodtcfg); writel((7 << 16) | 4, &pctl->dfiodtcfg1); } writel(bw | GRF_LPDDR2_3_EN, &grf->soc_con[0]); } setbits_le32(&pctl->scfg, 1); } static void phy_cfg(struct chan_info *chan, struct rk322x_sdram_params *sdram_params) { struct rk322x_ddr_phy *ddr_phy = chan->phy; struct rk322x_service_sys *axi_bus = chan->msch; struct rk322x_msch_timings *noc_timing = &sdram_params->base.noc_timing; struct rk322x_phy_timing *phy_timing = &sdram_params->phy_timing; struct rk322x_pctl_timing *pctl_timing = &sdram_params->pctl_timing; u32 cmd_drv, clk_drv, dqs_drv, dqs_odt; writel(noc_timing->ddrtiming, &axi_bus->ddrtiming); writel(noc_timing->ddrmode, &axi_bus->ddrmode); writel(noc_timing->readlatency, &axi_bus->readlatency); writel(noc_timing->activate, &axi_bus->activate); writel(noc_timing->devtodev, &axi_bus->devtodev); switch (sdram_params->base.dramtype) { case DDR3: writel(PHY_DDR3 | phy_timing->bl, &ddr_phy->ddrphy_reg[1]); break; case LPDDR2: writel(PHY_LPDDR2 | phy_timing->bl, &ddr_phy->ddrphy_reg[1]); break; default: writel(PHY_LPDDR2 | phy_timing->bl, &ddr_phy->ddrphy_reg[1]); break; } writel(phy_timing->cl_al, &ddr_phy->ddrphy_reg[0xb]); writel(pctl_timing->tcwl, &ddr_phy->ddrphy_reg[0xc]); cmd_drv = PHY_RON_RTT_34OHM; clk_drv = PHY_RON_RTT_45OHM; dqs_drv = PHY_RON_RTT_34OHM; if (sdram_params->base.dramtype == LPDDR2) dqs_odt = PHY_RON_RTT_DISABLE; else dqs_odt = PHY_RON_RTT_225OHM; writel(cmd_drv, &ddr_phy->ddrphy_reg[0x11]); clrsetbits_le32(&ddr_phy->ddrphy_reg[0x12], (0x1f << 3), cmd_drv << 3); writel(clk_drv, &ddr_phy->ddrphy_reg[0x16]); writel(clk_drv, &ddr_phy->ddrphy_reg[0x18]); writel(dqs_drv, &ddr_phy->ddrphy_reg[0x20]); writel(dqs_drv, &ddr_phy->ddrphy_reg[0x2f]); writel(dqs_drv, &ddr_phy->ddrphy_reg[0x30]); writel(dqs_drv, &ddr_phy->ddrphy_reg[0x3f]); writel(dqs_drv, &ddr_phy->ddrphy_reg[0x40]); writel(dqs_drv, &ddr_phy->ddrphy_reg[0x4f]); writel(dqs_drv, &ddr_phy->ddrphy_reg[0x50]); writel(dqs_drv, &ddr_phy->ddrphy_reg[0x5f]); writel(dqs_odt, &ddr_phy->ddrphy_reg[0x21]); writel(dqs_odt, &ddr_phy->ddrphy_reg[0x2e]); writel(dqs_odt, &ddr_phy->ddrphy_reg[0x31]); writel(dqs_odt, &ddr_phy->ddrphy_reg[0x3e]); writel(dqs_odt, &ddr_phy->ddrphy_reg[0x41]); writel(dqs_odt, &ddr_phy->ddrphy_reg[0x4e]); writel(dqs_odt, &ddr_phy->ddrphy_reg[0x51]); writel(dqs_odt, &ddr_phy->ddrphy_reg[0x5e]); } void dram_cfg_rbc(struct chan_info *chan, struct rk322x_sdram_params *sdram_params) { char noc_config; int i = 0; struct rk322x_sdram_channel *config = &sdram_params->ch[0]; struct rk322x_service_sys *axi_bus = chan->msch; move_to_config_state(chan->pctl); if ((config->rank == 2) && (config->cs1_row == config->cs0_row)) { if ((config->col + config->bw) == 12) { i = 14; goto finish; } else if ((config->col + config->bw) == 11) { i = 15; goto finish; } } noc_config = ((config->cs0_row - 13) << 4) | ((config->bk - 2) << 2) | (config->col + config->bw - 11); for (i = 0; i < 11; i++) { if (noc_config == ddr_cfg_2_rbc[i]) break; } if (i < 11) goto finish; noc_config = ((config->bk - 2) << 6) | ((config->cs0_row - 13) << 4) | (config->col + config->bw - 11); for (i = 11; i < 14; i++) { if (noc_config == ddr_cfg_2_rbc[i]) break; } if (i < 14) goto finish; else i = 0; finish: writel(i, &axi_bus->ddrconf); move_to_access_state(chan->pctl); } static void dram_all_config(const struct dram_info *dram, struct rk322x_sdram_params *sdram_params) { struct rk322x_sdram_channel *info = &sdram_params->ch[0]; u32 sys_reg = 0; sys_reg |= sdram_params->base.dramtype << SYS_REG_DDRTYPE_SHIFT; sys_reg |= (1 - 1) << SYS_REG_NUM_CH_SHIFT; sys_reg |= info->row_3_4 << SYS_REG_ROW_3_4_SHIFT(0); sys_reg |= 1 << SYS_REG_CHINFO_SHIFT(0); sys_reg |= (info->rank - 1) << SYS_REG_RANK_SHIFT(0); sys_reg |= (info->col - 9) << SYS_REG_COL_SHIFT(0); sys_reg |= info->bk == 3 ? 0 : 1 << SYS_REG_BK_SHIFT(0); sys_reg |= (info->cs0_row - 13) << SYS_REG_CS0_ROW_SHIFT(0); sys_reg |= (info->cs1_row - 13) << SYS_REG_CS1_ROW_SHIFT(0); sys_reg |= (2 >> info->bw) << SYS_REG_BW_SHIFT(0); sys_reg |= (2 >> info->dbw) << SYS_REG_DBW_SHIFT(0); writel(sys_reg, &dram->grf->os_reg[2]); } #define TEST_PATTEN 0x5aa5f00f static int dram_cap_detect(struct dram_info *dram, struct rk322x_sdram_params *sdram_params) { u32 bw, row, col, addr; u32 ret = 0; struct rk322x_service_sys *axi_bus = dram->chan[0].msch; if (sdram_params->base.dramtype == DDR3) sdram_params->ch[0].dbw = 1; else sdram_params->ch[0].dbw = 2; move_to_config_state(dram->chan[0].pctl); /* bw detect */ set_bw(dram, 2); if (data_training(&dram->chan[0]) == 0) { bw = 2; } else { bw = 1; set_bw(dram, 1); move_to_lowpower_state(dram->chan[0].pctl); phy_softreset(dram); move_to_config_state(dram->chan[0].pctl); if (data_training(&dram->chan[0])) { printf("BW detect error\n"); ret = -EINVAL; } } sdram_params->ch[0].bw = bw; sdram_params->ch[0].bk = 3; if (bw == 2) writel(6, &axi_bus->ddrconf); else writel(3, &axi_bus->ddrconf); move_to_access_state(dram->chan[0].pctl); for (col = 11; col >= 9; col--) { writel(0, CFG_SYS_SDRAM_BASE); addr = CFG_SYS_SDRAM_BASE + (1 << (col + bw - 1)); writel(TEST_PATTEN, addr); if ((readl(addr) == TEST_PATTEN) && (readl(CFG_SYS_SDRAM_BASE) == 0)) break; } if (col == 8) { printf("Col detect error\n"); ret = -EINVAL; goto out; } else { sdram_params->ch[0].col = col; } writel(10, &axi_bus->ddrconf); /* Detect row*/ for (row = 16; row >= 12; row--) { writel(0, CFG_SYS_SDRAM_BASE); addr = CFG_SYS_SDRAM_BASE + (1u << (row + 11 + 3 - 1)); writel(TEST_PATTEN, addr); if ((readl(addr) == TEST_PATTEN) && (readl(CFG_SYS_SDRAM_BASE) == 0)) break; } if (row == 11) { printf("Row detect error\n"); ret = -EINVAL; } else { sdram_params->ch[0].cs1_row = row; sdram_params->ch[0].row_3_4 = 0; sdram_params->ch[0].cs0_row = row; } /* cs detect */ writel(0, CFG_SYS_SDRAM_BASE); writel(TEST_PATTEN, CFG_SYS_SDRAM_BASE + (1u << 30)); writel(~TEST_PATTEN, CFG_SYS_SDRAM_BASE + (1u << 30) + 4); if ((readl(CFG_SYS_SDRAM_BASE + (1u << 30)) == TEST_PATTEN) && (readl(CFG_SYS_SDRAM_BASE) == 0)) sdram_params->ch[0].rank = 2; else sdram_params->ch[0].rank = 1; out: return ret; } static int sdram_init(struct dram_info *dram, struct rk322x_sdram_params *sdram_params) { int ret; ret = clk_set_rate(&dram->ddr_clk, sdram_params->base.ddr_freq * MHz * 2); if (ret < 0) { printf("Could not set DDR clock\n"); return ret; } phy_pctrl_reset(dram->cru, dram->chan[0].phy); phy_dll_bypass_set(dram->chan[0].phy, sdram_params->base.ddr_freq); pctl_cfg(dram->chan[0].pctl, sdram_params, dram->grf); phy_cfg(&dram->chan[0], sdram_params); writel(POWER_UP_START, &dram->chan[0].pctl->powctl); while (!(readl(&dram->chan[0].pctl->powstat) & POWER_UP_DONE)) ; memory_init(&dram->chan[0], sdram_params); move_to_access_state(dram->chan[0].pctl); ret = dram_cap_detect(dram, sdram_params); if (ret) goto out; dram_cfg_rbc(&dram->chan[0], sdram_params); dram_all_config(dram, sdram_params); out: return ret; } static int rk322x_dmc_of_to_plat(struct udevice *dev) { struct rk322x_sdram_params *params = dev_get_plat(dev); const void *blob = gd->fdt_blob; int node = dev_of_offset(dev); int ret; if (!CONFIG_IS_ENABLED(OF_REAL)) return 0; params->num_channels = 1; ret = fdtdec_get_int_array(blob, node, "rockchip,pctl-timing", (u32 *)¶ms->pctl_timing, sizeof(params->pctl_timing) / sizeof(u32)); if (ret) { printf("%s: Cannot read rockchip,pctl-timing\n", __func__); return -EINVAL; } ret = fdtdec_get_int_array(blob, node, "rockchip,phy-timing", (u32 *)¶ms->phy_timing, sizeof(params->phy_timing) / sizeof(u32)); if (ret) { printf("%s: Cannot read rockchip,phy-timing\n", __func__); return -EINVAL; } ret = fdtdec_get_int_array(blob, node, "rockchip,sdram-params", (u32 *)¶ms->base, sizeof(params->base) / sizeof(u32)); if (ret) { printf("%s: Cannot read rockchip,sdram-params\n", __func__); return -EINVAL; } ret = regmap_init_mem(dev_ofnode(dev), ¶ms->map); if (ret) return ret; return 0; } #endif /* CONFIG_TPL_BUILD */ #if CONFIG_IS_ENABLED(OF_PLATDATA) static int conv_of_plat(struct udevice *dev) { struct rk322x_sdram_params *plat = dev_get_plat(dev); struct dtd_rockchip_rk322x_dmc *of_plat = &plat->of_plat; int ret; memcpy(&plat->pctl_timing, of_plat->rockchip_pctl_timing, sizeof(plat->pctl_timing)); memcpy(&plat->phy_timing, of_plat->rockchip_phy_timing, sizeof(plat->phy_timing)); memcpy(&plat->base, of_plat->rockchip_sdram_params, sizeof(plat->base)); plat->num_channels = 1; ret = regmap_init_mem_plat(dev, of_plat->reg, ARRAY_SIZE(of_plat->reg) / 2, &plat->map); if (ret) return ret; return 0; } #endif static int rk322x_dmc_probe(struct udevice *dev) { #ifdef CONFIG_TPL_BUILD struct rk322x_sdram_params *plat = dev_get_plat(dev); int ret; struct udevice *dev_clk; #endif struct dram_info *priv = dev_get_priv(dev); priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF); #ifdef CONFIG_TPL_BUILD #if CONFIG_IS_ENABLED(OF_PLATDATA) ret = conv_of_plat(dev); if (ret) return ret; #endif priv->chan[0].msch = syscon_get_first_range(ROCKCHIP_SYSCON_MSCH); priv->chan[0].pctl = regmap_get_range(plat->map, 0); priv->chan[0].phy = regmap_get_range(plat->map, 1); ret = rockchip_get_clk(&dev_clk); if (ret) return ret; priv->ddr_clk.id = CLK_DDR; ret = clk_request(dev_clk, &priv->ddr_clk); if (ret) return ret; priv->cru = rockchip_get_cru(); if (IS_ERR(priv->cru)) return PTR_ERR(priv->cru); ret = sdram_init(priv, plat); if (ret) return ret; #else priv->info.base = CFG_SYS_SDRAM_BASE; priv->info.size = rockchip_sdram_size( (phys_addr_t)&priv->grf->os_reg[2]); #endif return 0; } static int rk322x_dmc_get_info(struct udevice *dev, struct ram_info *info) { struct dram_info *priv = dev_get_priv(dev); *info = priv->info; return 0; } static struct ram_ops rk322x_dmc_ops = { .get_info = rk322x_dmc_get_info, }; static const struct udevice_id rk322x_dmc_ids[] = { { .compatible = "rockchip,rk3228-dmc" }, { } }; U_BOOT_DRIVER(dmc_rk322x) = { .name = "rockchip_rk322x_dmc", .id = UCLASS_RAM, .of_match = rk322x_dmc_ids, .ops = &rk322x_dmc_ops, #ifdef CONFIG_TPL_BUILD .of_to_plat = rk322x_dmc_of_to_plat, #endif .probe = rk322x_dmc_probe, .priv_auto = sizeof(struct dram_info), #ifdef CONFIG_TPL_BUILD .plat_auto = sizeof(struct rk322x_sdram_params), #endif };