From: Paweł Jarosz paweljarosz3691@gmail.com
Add rockchip rk3066 sdram driver
Signed-off-by: Paweł Jarosz paweljarosz3691@gmail.com Signed-off-by: Johan Jonker jbx6244@gmail.com ---
Changed V7: restyle rename TEST_PATTERN changed function prefix changed #if where possible restyle U_BOOT_DRIVER structure remove rk3066_dmc_of_to_plat because dmc DT data only used in TPL in combination with OF_PLATDATA --- drivers/ram/rockchip/Makefile | 1 + drivers/ram/rockchip/sdram_rk3066.c | 892 ++++++++++++++++++++++++++++ 2 files changed, 893 insertions(+) create mode 100644 drivers/ram/rockchip/sdram_rk3066.c
diff --git a/drivers/ram/rockchip/Makefile b/drivers/ram/rockchip/Makefile index ca1c289b..6d530c29 100644 --- a/drivers/ram/rockchip/Makefile +++ b/drivers/ram/rockchip/Makefile @@ -5,6 +5,7 @@
obj-$(CONFIG_ROCKCHIP_PX30) += sdram_px30.o sdram_pctl_px30.o sdram_phy_px30.o obj-$(CONFIG_ROCKCHIP_RK3368) = dmc-rk3368.o +obj-$(CONFIG_ROCKCHIP_RK3066) = sdram_rk3066.o obj-$(CONFIG_ROCKCHIP_RK3128) = sdram_rk3128.o obj-$(CONFIG_ROCKCHIP_RK3188) = sdram_rk3188.o obj-$(CONFIG_ROCKCHIP_RK322X) = sdram_rk322x.o diff --git a/drivers/ram/rockchip/sdram_rk3066.c b/drivers/ram/rockchip/sdram_rk3066.c new file mode 100644 index 00000000..832154ee --- /dev/null +++ b/drivers/ram/rockchip/sdram_rk3066.c @@ -0,0 +1,892 @@ +// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause +/* + * (C) Copyright 2015 Google, Inc + * Copyright 2014 Rockchip Inc. + * + * Adapted from the very similar rk3188 ddr init. + */ + +#include <common.h> +#include <clk.h> +#include <dm.h> +#include <dt-structs.h> +#include <errno.h> +#include <hang.h> +#include <init.h> +#include <log.h> +#include <ram.h> +#include <regmap.h> +#include <syscon.h> +#include <asm/io.h> +#include <asm/arch-rockchip/clock.h> +#include <asm/arch-rockchip/cru_rk3066.h> +#include <asm/arch-rockchip/ddr_rk3188.h> +#include <asm/arch-rockchip/grf_rk3066.h> +#include <asm/arch-rockchip/hardware.h> +#include <asm/arch-rockchip/pmu_rk3188.h> +#include <asm/arch-rockchip/sdram_rk3288.h> +#include <asm/arch-rockchip/sdram.h> +#include <linux/delay.h> +#include <linux/err.h> + +struct rk3066_dmc_chan_info { + struct rk3288_ddr_pctl *pctl; + struct rk3288_ddr_publ *publ; + struct rk3188_msch *msch; +}; + +struct rk3066_dmc_dram_info { + struct rk3066_dmc_chan_info chan[1]; + struct ram_info info; + struct clk ddr_clk; + struct rk3066_cru *cru; + struct rk3066_grf *grf; + struct rk3066_sgrf *sgrf; + struct rk3188_pmu *pmu; +}; + +struct rk3066_dmc_sdram_params { +#if CONFIG_IS_ENABLED(OF_PLATDATA) + struct dtd_rockchip_rk3066_dmc of_plat; +#endif + struct rk3288_sdram_channel ch[2]; + struct rk3288_sdram_pctl_timing pctl_timing; + struct rk3288_sdram_phy_timing phy_timing; + struct rk3288_base_params base; + int num_channels; + struct regmap *map; +}; + +const int rk3066_dmc_ddrconf_table[] = { + /* + * [5:4] row(13+n) + * [1:0] col(9+n), assume bw=2 + * row col,bw + */ + 0, + (2 << DDRCONF_ROW_SHIFT) | 1 << DDRCONF_COL_SHIFT, + (1 << DDRCONF_ROW_SHIFT) | 1 << DDRCONF_COL_SHIFT, + (0 << DDRCONF_ROW_SHIFT) | 1 << DDRCONF_COL_SHIFT, + (2 << DDRCONF_ROW_SHIFT) | 2 << DDRCONF_COL_SHIFT, + (1 << DDRCONF_ROW_SHIFT) | 2 << DDRCONF_COL_SHIFT, + (0 << DDRCONF_ROW_SHIFT) | 2 << DDRCONF_COL_SHIFT, + (1 << DDRCONF_ROW_SHIFT) | 0 << DDRCONF_COL_SHIFT, + (0 << DDRCONF_ROW_SHIFT) | 0 << DDRCONF_COL_SHIFT, + 0, + 0, + 0, + 0, + 0, + 0, + 0, +}; + +#define TEST_PATTERN 0x5aa5f00f +#define DQS_GATE_TRAINING_ERROR_RANK0 BIT(4) +#define DQS_GATE_TRAINING_ERROR_RANK1 BIT(5) + +static void rk3066_dmc_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++; + } +} + +static void rk3066_dmc_ddr_reset(struct rk3066_cru *cru, u32 ch, u32 ctl, u32 phy) +{ + u32 phy_ctl_srstn_shift = 13; + u32 ctl_psrstn_shift = 11; + u32 ctl_srstn_shift = 10; + u32 phy_psrstn_shift = 9; + u32 phy_srstn_shift = 8; + + rk_clrsetreg(&cru->cru_softrst_con[5], + 1 << phy_ctl_srstn_shift | 1 << ctl_psrstn_shift | + 1 << ctl_srstn_shift | 1 << phy_psrstn_shift | + 1 << phy_srstn_shift, + phy << phy_ctl_srstn_shift | ctl << ctl_psrstn_shift | + ctl << ctl_srstn_shift | phy << phy_psrstn_shift | + phy << phy_srstn_shift); +} + +static void rk3066_dmc_ddr_phy_ctl_reset(struct rk3066_cru *cru, u32 ch, u32 n) +{ + u32 phy_ctl_srstn_shift = 13; + + rk_clrsetreg(&cru->cru_softrst_con[5], + 1 << phy_ctl_srstn_shift, n << phy_ctl_srstn_shift); +} + +static void rk3066_dmc_phy_pctrl_reset(struct rk3066_cru *cru, + struct rk3288_ddr_publ *publ, + int channel) +{ + int i; + + rk3066_dmc_ddr_reset(cru, channel, 1, 1); + udelay(1); + clrbits_le32(&publ->acdllcr, ACDLLCR_DLLSRST); + for (i = 0; i < 4; i++) + clrbits_le32(&publ->datx8[i].dxdllcr, DXDLLCR_DLLSRST); + + udelay(10); + setbits_le32(&publ->acdllcr, ACDLLCR_DLLSRST); + for (i = 0; i < 4; i++) + setbits_le32(&publ->datx8[i].dxdllcr, DXDLLCR_DLLSRST); + + udelay(10); + rk3066_dmc_ddr_reset(cru, channel, 1, 0); + udelay(10); + rk3066_dmc_ddr_reset(cru, channel, 0, 0); + udelay(10); +} + +static void rk3066_dmc_phy_dll_bypass_set(struct rk3288_ddr_publ *publ, u32 freq) +{ + int i; + + if (freq <= 250000000) { + if (freq <= 150000000) + clrbits_le32(&publ->dllgcr, SBIAS_BYPASS); + else + setbits_le32(&publ->dllgcr, SBIAS_BYPASS); + setbits_le32(&publ->acdllcr, ACDLLCR_DLLDIS); + for (i = 0; i < 4; i++) + setbits_le32(&publ->datx8[i].dxdllcr, + DXDLLCR_DLLDIS); + + setbits_le32(&publ->pir, PIR_DLLBYP); + } else { + clrbits_le32(&publ->dllgcr, SBIAS_BYPASS); + clrbits_le32(&publ->acdllcr, ACDLLCR_DLLDIS); + for (i = 0; i < 4; i++) { + clrbits_le32(&publ->datx8[i].dxdllcr, + DXDLLCR_DLLDIS); + } + + clrbits_le32(&publ->pir, PIR_DLLBYP); + } +} + +static void rk3066_dmc_dfi_cfg(struct rk3288_ddr_pctl *pctl, u32 dramtype) +{ + writel(DFI_INIT_START, &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(7 << TLP_RESP_TIME_SHIFT | LP_SR_EN | LP_PD_EN, + &pctl->dfilpcfg0); + + writel(2 << TCTRL_DELAY_TIME_SHIFT, &pctl->dfitctrldelay); + writel(1 << TPHY_WRDATA_TIME_SHIFT, &pctl->dfitphywrdata); + writel(0xf << TPHY_RDLAT_TIME_SHIFT, &pctl->dfitphyrdlat); + writel(2 << TDRAM_CLK_DIS_TIME_SHIFT, &pctl->dfitdramclkdis); + writel(2 << TDRAM_CLK_EN_TIME_SHIFT, &pctl->dfitdramclken); + writel(1, &pctl->dfitphyupdtype0); + + /* CS0 and CS1 write ODT enable. */ + writel((RANK0_ODT_WRITE_SEL | RANK1_ODT_WRITE_SEL), + &pctl->dfiodtcfg); + /* Write ODT length. */ + writel(7 << ODT_LEN_BL8_W_SHIFT, &pctl->dfiodtcfg1); + /* Disable phyupd and ctrlupd. */ + writel(0, &pctl->dfiupdcfg); +} + +static void rk3066_dmc_ddr_set_ddr3_mode(struct rk3066_grf *grf, uint channel, + bool ddr3_mode) +{ + uint mask, val; + + mask = MSCH4_MAINDDR3_MASK << MSCH4_MAINDDR3_SHIFT; + val = ddr3_mode << MSCH4_MAINDDR3_SHIFT; + rk_clrsetreg(&grf->soc_con2, mask, val); +} + +static void rk3066_dmc_ddr_rank_2_row15en(struct rk3066_grf *grf, bool enable) +{ + uint mask, val; + + mask = RANK_TO_ROW15_EN_MASK << RANK_TO_ROW15_EN_SHIFT; + val = enable << RANK_TO_ROW15_EN_SHIFT; + rk_clrsetreg(&grf->soc_con2, mask, val); +} + +static void rk3066_dmc_pctl_cfg(int channel, struct rk3288_ddr_pctl *pctl, + struct rk3066_dmc_sdram_params *sdram_params, + struct rk3066_grf *grf) +{ + rk3066_dmc_copy_to_reg(&pctl->togcnt1u, &sdram_params->pctl_timing.togcnt1u, + sizeof(sdram_params->pctl_timing)); + switch (sdram_params->base.dramtype) { + case DDR3: + if (sdram_params->phy_timing.mr[1] & DDR3_DLL_DISABLE) { + writel(sdram_params->pctl_timing.tcl - 3, + &pctl->dfitrddataen); + } else { + writel(sdram_params->pctl_timing.tcl - 2, + &pctl->dfitrddataen); + } + writel(sdram_params->pctl_timing.tcwl - 1, + &pctl->dfitphywrlat); + 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); + rk3066_dmc_ddr_set_ddr3_mode(grf, channel, true); + break; + } + + setbits_le32(&pctl->scfg, 1); +} + +static void rk3066_dmc_phy_cfg(const struct rk3066_dmc_chan_info *chan, int channel, + struct rk3066_dmc_sdram_params *sdram_params) +{ + struct rk3288_ddr_publ *publ = chan->publ; + struct rk3188_msch *msch = chan->msch; + uint ddr_freq_mhz = sdram_params->base.ddr_freq / 1000000; + u32 dinit2; + int i; + + dinit2 = DIV_ROUND_UP(ddr_freq_mhz * 200000, 1000); + /* Set DDR PHY timing. */ + rk3066_dmc_copy_to_reg(&publ->dtpr[0], &sdram_params->phy_timing.dtpr0, + sizeof(sdram_params->phy_timing)); + writel(sdram_params->base.noc_timing, &msch->ddrtiming); + writel(0x3f, &msch->readlatency); + writel(DIV_ROUND_UP(ddr_freq_mhz * 5120, 1000) << PRT_DLLLOCK_SHIFT | + DIV_ROUND_UP(ddr_freq_mhz * 50, 1000) << PRT_DLLSRST_SHIFT | + 8 << PRT_ITMSRST_SHIFT, &publ->ptr[0]); + writel(DIV_ROUND_UP(ddr_freq_mhz * 500000, 1000) << PRT_DINIT0_SHIFT | + DIV_ROUND_UP(ddr_freq_mhz * 400, 1000) << PRT_DINIT1_SHIFT, + &publ->ptr[1]); + writel(min(dinit2, 0x1ffffU) << PRT_DINIT2_SHIFT | + DIV_ROUND_UP(ddr_freq_mhz * 1000, 1000) << PRT_DINIT3_SHIFT, + &publ->ptr[2]); + + switch (sdram_params->base.dramtype) { + case DDR3: + clrbits_le32(&publ->pgcr, 0x1f); + clrsetbits_le32(&publ->dcr, DDRMD_MASK << DDRMD_SHIFT, + DDRMD_DDR3 << DDRMD_SHIFT); + break; + } + if (sdram_params->base.odt) { + /* Enable dynamic RTT. */ + for (i = 0; i < 4; i++) + setbits_le32(&publ->datx8[i].dxgcr, DQSRTT | DQRTT); + } else { + /* Disable dynamic RTT. */ + for (i = 0; i < 4; i++) + clrbits_le32(&publ->datx8[i].dxgcr, DQSRTT | DQRTT); + } +} + +static void rk3066_dmc_phy_init(struct rk3288_ddr_publ *publ) +{ + setbits_le32(&publ->pir, PIR_INIT | PIR_DLLSRST + | PIR_DLLLOCK | PIR_ZCAL | PIR_ITMSRST | PIR_CLRSR); + udelay(1); + while ((readl(&publ->pgsr) & + (PGSR_IDONE | PGSR_DLDONE | PGSR_ZCDONE)) != + (PGSR_IDONE | PGSR_DLDONE | PGSR_ZCDONE)) + ; +} + +static void rk3066_dmc_send_command(struct rk3288_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 inline void rk3066_dmc_send_command_op(struct rk3288_ddr_pctl *pctl, + u32 rank, u32 cmd, u32 ma, u32 op) +{ + rk3066_dmc_send_command(pctl, rank, cmd, (ma & LPDDR2_MA_MASK) << LPDDR2_MA_SHIFT | + (op & LPDDR2_OP_MASK) << LPDDR2_OP_SHIFT); +} + +static void rk3066_dmc_memory_init(struct rk3288_ddr_publ *publ, + u32 dramtype) +{ + setbits_le32(&publ->pir, + (PIR_INIT | PIR_DRAMINIT | PIR_LOCKBYP + | PIR_ZCALBYP | PIR_CLRSR | PIR_ICPC + | (dramtype == DDR3 ? PIR_DRAMRST : 0))); + udelay(1); + while ((readl(&publ->pgsr) & (PGSR_IDONE | PGSR_DLDONE)) + != (PGSR_IDONE | PGSR_DLDONE)) + ; +} + +static void rk3066_dmc_move_to_config_state(struct rk3288_ddr_publ *publ, + struct rk3288_ddr_pctl *pctl) +{ + unsigned int state; + + while (1) { + state = readl(&pctl->stat) & PCTL_STAT_MSK; + + switch (state) { + case LOW_POWER: + writel(WAKEUP_STATE, &pctl->sctl); + while ((readl(&pctl->stat) & PCTL_STAT_MSK) + != ACCESS) + ; + /* Wait DLL lock. */ + while ((readl(&publ->pgsr) & PGSR_DLDONE) + != PGSR_DLDONE) + ; + /* + * If at low power state we need to wakeup first + * and then enter the config. + */ + fallthrough; + case ACCESS: + fallthrough; + case INIT_MEM: + writel(CFG_STATE, &pctl->sctl); + while ((readl(&pctl->stat) & PCTL_STAT_MSK) != CONFIG) + ; + break; + case CONFIG: + return; + default: + break; + } + } +} + +static void rk3066_dmc_set_bandwidth_ratio(const struct rk3066_dmc_chan_info *chan, int channel, + u32 n, struct rk3066_grf *grf) +{ + struct rk3288_ddr_pctl *pctl = chan->pctl; + struct rk3288_ddr_publ *publ = chan->publ; + struct rk3188_msch *msch = chan->msch; + + if (n == 1) { + setbits_le32(&pctl->ppcfg, 1); + setbits_le32(&msch->ddrtiming, 1 << 31); + /* Data byte disable. */ + clrbits_le32(&publ->datx8[2].dxgcr, 1); + clrbits_le32(&publ->datx8[3].dxgcr, 1); + /* Disable DLL. */ + setbits_le32(&publ->datx8[2].dxdllcr, DXDLLCR_DLLDIS); + setbits_le32(&publ->datx8[3].dxdllcr, DXDLLCR_DLLDIS); + } else { + clrbits_le32(&pctl->ppcfg, 1); + clrbits_le32(&msch->ddrtiming, 1 << 31); + /* Data byte enable.*/ + setbits_le32(&publ->datx8[2].dxgcr, 1); + setbits_le32(&publ->datx8[3].dxgcr, 1); + + /* Enable DLL. */ + clrbits_le32(&publ->datx8[2].dxdllcr, DXDLLCR_DLLDIS); + clrbits_le32(&publ->datx8[3].dxdllcr, DXDLLCR_DLLDIS); + /* Reset DLL. */ + clrbits_le32(&publ->datx8[2].dxdllcr, DXDLLCR_DLLSRST); + clrbits_le32(&publ->datx8[3].dxdllcr, DXDLLCR_DLLSRST); + udelay(10); + setbits_le32(&publ->datx8[2].dxdllcr, DXDLLCR_DLLSRST); + setbits_le32(&publ->datx8[3].dxdllcr, DXDLLCR_DLLSRST); + } + setbits_le32(&pctl->dfistcfg0, 1 << 2); +} + +static int rk3066_dmc_data_training(const struct rk3066_dmc_chan_info *chan, int channel, + struct rk3066_dmc_sdram_params *sdram_params) +{ + unsigned int j; + int ret = 0; + u32 rank; + int i; + u32 step[2] = { PIR_QSTRN, PIR_RVTRN }; + struct rk3288_ddr_publ *publ = chan->publ; + struct rk3288_ddr_pctl *pctl = chan->pctl; + + /* Disable auto refresh. */ + writel(0, &pctl->trefi); + + if (sdram_params->base.dramtype != LPDDR3) + setbits_le32(&publ->pgcr, 1 << PGCR_DQSCFG_SHIFT); + rank = sdram_params->ch[channel].rank | 1; + for (j = 0; j < ARRAY_SIZE(step); j++) { + /* + * Trigger QSTRN and RVTRN. + * Clear DTDONE status. + */ + setbits_le32(&publ->pir, PIR_CLRSR); + + /* Trigger DTT. */ + setbits_le32(&publ->pir, + PIR_INIT | step[j] | PIR_LOCKBYP | PIR_ZCALBYP | + PIR_CLRSR); + udelay(1); + /* Wait echo byte DTDONE. */ + while ((readl(&publ->datx8[0].dxgsr[0]) & rank) + != rank) + ; + while ((readl(&publ->datx8[1].dxgsr[0]) & rank) + != rank) + ; + if (!(readl(&pctl->ppcfg) & 1)) { + while ((readl(&publ->datx8[2].dxgsr[0]) + & rank) != rank) + ; + while ((readl(&publ->datx8[3].dxgsr[0]) + & rank) != rank) + ; + } + if (readl(&publ->pgsr) & + (PGSR_DTERR | PGSR_RVERR | PGSR_RVEIRR)) { + ret = -1; + break; + } + } + /* Send some auto refresh to complement the lost while DTT. */ + for (i = 0; i < (rank > 1 ? 8 : 4); i++) + rk3066_dmc_send_command(pctl, rank, REF_CMD, 0); + + if (sdram_params->base.dramtype != LPDDR3) + clrbits_le32(&publ->pgcr, 1 << PGCR_DQSCFG_SHIFT); + + /* Resume auto refresh. */ + writel(sdram_params->pctl_timing.trefi, &pctl->trefi); + + return ret; +} + +static void rk3066_dmc_move_to_access_state(const struct rk3066_dmc_chan_info *chan) +{ + struct rk3288_ddr_publ *publ = chan->publ; + struct rk3288_ddr_pctl *pctl = chan->pctl; + unsigned int state; + + while (1) { + state = readl(&pctl->stat) & PCTL_STAT_MSK; + + switch (state) { + case LOW_POWER: + if (((readl(&pctl->stat) >> LP_TRIG_SHIFT) & + LP_TRIG_MASK) == 1) + return; + + writel(WAKEUP_STATE, &pctl->sctl); + while ((readl(&pctl->stat) & PCTL_STAT_MSK) != ACCESS) + ; + /* Wait DLL lock. */ + while ((readl(&publ->pgsr) & PGSR_DLDONE) + != PGSR_DLDONE) + ; + break; + case INIT_MEM: + writel(CFG_STATE, &pctl->sctl); + while ((readl(&pctl->stat) & PCTL_STAT_MSK) != CONFIG) + ; + fallthrough; + case CONFIG: + writel(GO_STATE, &pctl->sctl); + while ((readl(&pctl->stat) & PCTL_STAT_MSK) == CONFIG) + ; + break; + case ACCESS: + return; + default: + break; + } + } +} + +static void rk3066_dmc_dram_cfg_rbc(const struct rk3066_dmc_chan_info *chan, u32 chnum, + struct rk3066_dmc_sdram_params *sdram_params) +{ + struct rk3288_ddr_publ *publ = chan->publ; + + if (sdram_params->ch[chnum].bk == 3) + clrsetbits_le32(&publ->dcr, PDQ_MASK << PDQ_SHIFT, + 1 << PDQ_SHIFT); + else + clrbits_le32(&publ->dcr, PDQ_MASK << PDQ_SHIFT); + + writel(sdram_params->base.ddrconfig, &chan->msch->ddrconf); +} + +static void rk3066_dmc_dram_all_config(const struct rk3066_dmc_dram_info *dram, + struct rk3066_dmc_sdram_params *sdram_params) +{ + unsigned int chan; + u32 sys_reg = 0; + + sys_reg |= sdram_params->base.dramtype << SYS_REG_DDRTYPE_SHIFT; + sys_reg |= (sdram_params->num_channels - 1) << SYS_REG_NUM_CH_SHIFT; + for (chan = 0; chan < sdram_params->num_channels; chan++) { + const struct rk3288_sdram_channel *info = + &sdram_params->ch[chan]; + + sys_reg |= info->row_3_4 << SYS_REG_ROW_3_4_SHIFT(chan); + sys_reg |= 1 << SYS_REG_CHINFO_SHIFT(chan); + sys_reg |= (info->rank - 1) << SYS_REG_RANK_SHIFT(chan); + sys_reg |= (info->col - 9) << SYS_REG_COL_SHIFT(chan); + sys_reg |= info->bk == 3 ? 0 : 1 << SYS_REG_BK_SHIFT(chan); + sys_reg |= (info->cs0_row - 13) << SYS_REG_CS0_ROW_SHIFT(chan); + sys_reg |= (info->cs1_row - 13) << SYS_REG_CS1_ROW_SHIFT(chan); + sys_reg |= (2 >> info->bw) << SYS_REG_BW_SHIFT(chan); + sys_reg |= (2 >> info->dbw) << SYS_REG_DBW_SHIFT(chan); + + rk3066_dmc_dram_cfg_rbc(&dram->chan[chan], chan, sdram_params); + } + if (sdram_params->ch[0].rank == 2) + rk3066_dmc_ddr_rank_2_row15en(dram->grf, 0); + else + rk3066_dmc_ddr_rank_2_row15en(dram->grf, 1); + + writel(sys_reg, &dram->pmu->sys_reg[2]); +} + +static int rk3066_dmc_sdram_rank_bw_detect(struct rk3066_dmc_dram_info *dram, int channel, + struct rk3066_dmc_sdram_params *sdram_params) +{ + int reg; + int need_trainig = 0; + const struct rk3066_dmc_chan_info *chan = &dram->chan[channel]; + struct rk3288_ddr_publ *publ = chan->publ; + + rk3066_dmc_ddr_rank_2_row15en(dram->grf, 0); + + if (rk3066_dmc_data_training(chan, channel, sdram_params) < 0) { + debug("first data training fail!\n"); + reg = readl(&publ->datx8[0].dxgsr[0]); + /* Check the result for rank 0. */ + if (channel == 0 && (reg & DQS_GATE_TRAINING_ERROR_RANK0)) { + debug("data training fail!\n"); + return -EIO; + } + + /* Check the result for rank 1. */ + if (reg & DQS_GATE_TRAINING_ERROR_RANK1) { + sdram_params->ch[channel].rank = 1; + clrsetbits_le32(&publ->pgcr, 0xF << 18, + sdram_params->ch[channel].rank << 18); + need_trainig = 1; + } + reg = readl(&publ->datx8[2].dxgsr[0]); + if (reg & (1 << 4)) { + sdram_params->ch[channel].bw = 1; + rk3066_dmc_set_bandwidth_ratio(chan, channel, + sdram_params->ch[channel].bw, + dram->grf); + need_trainig = 1; + } + } + /* Assume that the die bit width is equel to the chip bit width. */ + sdram_params->ch[channel].dbw = sdram_params->ch[channel].bw; + + if (need_trainig && + (rk3066_dmc_data_training(chan, channel, sdram_params) < 0)) { + if (sdram_params->base.dramtype == LPDDR3) { + rk3066_dmc_ddr_phy_ctl_reset(dram->cru, channel, 1); + udelay(10); + rk3066_dmc_ddr_phy_ctl_reset(dram->cru, channel, 0); + udelay(10); + } + debug("2nd data training failed!"); + return -EIO; + } + + return 0; +} + +static int rk3066_dmc_sdram_col_row_detect(struct rk3066_dmc_dram_info *dram, int channel, + struct rk3066_dmc_sdram_params *sdram_params) +{ + int row, col; + unsigned int addr; + const struct rk3066_dmc_chan_info *chan = &dram->chan[channel]; + struct rk3288_ddr_pctl *pctl = chan->pctl; + struct rk3288_ddr_publ *publ = chan->publ; + int ret = 0; + + /* Detect col. */ + for (col = 11; col >= 9; col--) { + writel(0, CONFIG_SYS_SDRAM_BASE); + addr = CONFIG_SYS_SDRAM_BASE + + (1 << (col + sdram_params->ch[channel].bw - 1)); + writel(TEST_PATTERN, addr); + if ((readl(addr) == TEST_PATTERN) && + (readl(CONFIG_SYS_SDRAM_BASE) == 0)) + break; + } + if (col == 8) { + debug("Col detect error\n"); + ret = -EINVAL; + goto out; + } else { + sdram_params->ch[channel].col = col; + } + + rk3066_dmc_ddr_rank_2_row15en(dram->grf, 1); + rk3066_dmc_move_to_config_state(publ, pctl); + writel(1, &chan->msch->ddrconf); + rk3066_dmc_move_to_access_state(chan); + /* Detect row, max 15, min13 for rk3066 */ + for (row = 16; row >= 13; row--) { + writel(0, CONFIG_SYS_SDRAM_BASE); + addr = CONFIG_SYS_SDRAM_BASE + (1 << (row + 15 - 1)); + writel(TEST_PATTERN, addr); + if ((readl(addr) == TEST_PATTERN) && + (readl(CONFIG_SYS_SDRAM_BASE) == 0)) + break; + } + if (row == 12) { + debug("Row detect error\n"); + ret = -EINVAL; + } else { + sdram_params->ch[channel].cs1_row = row; + sdram_params->ch[channel].row_3_4 = 0; + debug("chn %d col %d, row %d\n", channel, col, row); + sdram_params->ch[channel].cs0_row = row; + } + +out: + return ret; +} + +static int rk3066_dmc_sdram_get_niu_config(struct rk3066_dmc_sdram_params *sdram_params) +{ + int i, tmp, size, ret = 0; + + tmp = sdram_params->ch[0].col - 9; + tmp -= (sdram_params->ch[0].bw == 2) ? 0 : 1; + tmp |= ((sdram_params->ch[0].cs0_row - 13) << 4); + size = ARRAY_SIZE(rk3066_dmc_ddrconf_table) / sizeof(rk3066_dmc_ddrconf_table[0]); + for (i = 0; i < size; i++) + if (tmp == rk3066_dmc_ddrconf_table[i]) + break; + if (i >= size) { + debug("niu config not found\n"); + ret = -EINVAL; + } else { + debug("niu config %d\n", i); + sdram_params->base.ddrconfig = i; + } + + return ret; +} + +static int rk3066_dmc_sdram_init(struct rk3066_dmc_dram_info *dram, + struct rk3066_dmc_sdram_params *sdram_params) +{ + int channel; + int zqcr; + int ret; + + if ((sdram_params->base.dramtype == DDR3 && + sdram_params->base.ddr_freq > 800000000)) { + debug("SDRAM frequency is too high!"); + return -E2BIG; + } + + ret = clk_set_rate(&dram->ddr_clk, sdram_params->base.ddr_freq); + if (ret) { + debug("Could not set DDR clock\n"); + return ret; + } + + for (channel = 0; channel < 1; channel++) { + const struct rk3066_dmc_chan_info *chan = &dram->chan[channel]; + struct rk3288_ddr_pctl *pctl = chan->pctl; + struct rk3288_ddr_publ *publ = chan->publ; + + rk3066_dmc_phy_pctrl_reset(dram->cru, publ, channel); + rk3066_dmc_phy_dll_bypass_set(publ, sdram_params->base.ddr_freq); + + rk3066_dmc_dfi_cfg(pctl, sdram_params->base.dramtype); + + rk3066_dmc_pctl_cfg(channel, pctl, sdram_params, dram->grf); + + rk3066_dmc_phy_cfg(chan, channel, sdram_params); + + rk3066_dmc_phy_init(publ); + + writel(POWER_UP_START, &pctl->powctl); + while (!(readl(&pctl->powstat) & POWER_UP_DONE)) + ; + + rk3066_dmc_memory_init(publ, sdram_params->base.dramtype); + rk3066_dmc_move_to_config_state(publ, pctl); + + /* Use 32bit bus width for detection. */ + sdram_params->ch[channel].bw = 2; + rk3066_dmc_set_bandwidth_ratio(chan, channel, + sdram_params->ch[channel].bw, dram->grf); + /* + * set cs, using n=3 for detect + * CS0, n=1 + * CS1, n=2 + * CS0 & CS1, n = 3 + */ + sdram_params->ch[channel].rank = 2; + clrsetbits_le32(&publ->pgcr, 0xF << 18, + (sdram_params->ch[channel].rank | 1) << 18); + + /* DS=40ohm,ODT=155ohm */ + zqcr = 1 << ZDEN_SHIFT | 2 << PU_ONDIE_SHIFT | + 2 << PD_ONDIE_SHIFT | 0x19 << PU_OUTPUT_SHIFT | + 0x19 << PD_OUTPUT_SHIFT; + writel(zqcr, &publ->zq1cr[0]); + writel(zqcr, &publ->zq0cr[0]); + + /* Detect the rank and bit-width with data-training. */ + writel(1, &chan->msch->ddrconf); + rk3066_dmc_sdram_rank_bw_detect(dram, channel, sdram_params); + + if (sdram_params->base.dramtype == LPDDR3) { + u32 i; + + writel(0, &pctl->mrrcfg0); + + for (i = 0; i < 17; i++) + rk3066_dmc_send_command_op(pctl, 1, MRR_CMD, i, 0); + } + writel(4, &chan->msch->ddrconf); + rk3066_dmc_move_to_access_state(chan); + /* DDR3 and LPDDR3 are always 8 bank, no need to detect. */ + sdram_params->ch[channel].bk = 3; + /* Detect Col and Row number. */ + ret = rk3066_dmc_sdram_col_row_detect(dram, channel, sdram_params); + if (ret) + goto error; + } + /* Find NIU DDR configuration. */ + ret = rk3066_dmc_sdram_get_niu_config(sdram_params); + if (ret) + goto error; + + rk3066_dmc_dram_all_config(dram, sdram_params); + debug("SDRAM init OK!\n"); + + return 0; +error: + debug("SDRAM init failed!\n"); + hang(); +} + +static int rk3066_dmc_setup_sdram(struct udevice *dev) +{ + struct rk3066_dmc_dram_info *priv = dev_get_priv(dev); + struct rk3066_dmc_sdram_params *params = dev_get_plat(dev); + + return rk3066_dmc_sdram_init(priv, params); +} + +static int rk3066_dmc_conv_of_plat(struct udevice *dev) +{ +#if CONFIG_IS_ENABLED(OF_PLATDATA) + struct rk3066_dmc_sdram_params *plat = dev_get_plat(dev); + struct dtd_rockchip_rk3066_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)); + /* RK3066 supports dual-channel, set default channel num to 2. */ + 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; +#else + return -EINVAL; +#endif +} + +static int rk3066_dmc_probe(struct udevice *dev) +{ + struct rk3066_dmc_dram_info *priv = dev_get_priv(dev); + + priv->pmu = syscon_get_first_range(ROCKCHIP_SYSCON_PMU); + + if (IS_ENABLED(CONFIG_TPL_BUILD)) { + struct rk3066_dmc_sdram_params *plat = dev_get_plat(dev); + struct regmap *map; + struct udevice *dev_clk; + int ret; + + ret = rk3066_dmc_conv_of_plat(dev); + if (ret) + return ret; + + map = syscon_get_regmap_by_driver_data(ROCKCHIP_SYSCON_NOC); + if (IS_ERR(map)) + return PTR_ERR(map); + priv->chan[0].msch = regmap_get_range(map, 0); + priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF); + + priv->chan[0].pctl = regmap_get_range(plat->map, 0); + priv->chan[0].publ = 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 = rk3066_dmc_setup_sdram(dev); + if (ret) + return ret; + } else { + priv->info.base = CONFIG_SYS_SDRAM_BASE; + priv->info.size = rockchip_sdram_size((phys_addr_t)&priv->pmu->sys_reg[2]); + } + + return 0; +} + +static int rk3066_dmc_get_info(struct udevice *dev, struct ram_info *info) +{ + struct rk3066_dmc_dram_info *priv = dev_get_priv(dev); + + *info = priv->info; + + return 0; +} + +static struct ram_ops rk3066_dmc_ops = { + .get_info = rk3066_dmc_get_info, +}; + +static const struct udevice_id rk3066_dmc_ids[] = { + { .compatible = "rockchip,rk3066-dmc" }, + { } +}; + +U_BOOT_DRIVER(rockchip_rk3066_dmc) = { + .name = "rockchip_rk3066_dmc", + .id = UCLASS_RAM, + .ops = &rk3066_dmc_ops, + .probe = rk3066_dmc_probe, + .of_match = rk3066_dmc_ids, + .priv_auto = sizeof(struct rk3066_dmc_dram_info), +#if IS_ENABLED(CONFIG_TPL_BUILD) + .plat_auto = sizeof(struct rk3066_dmc_sdram_params), +#endif +};