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author | Kever Yang <kever.yang@rock-chips.com> | 2019-08-02 10:39:59 +0300 |
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committer | Kever Yang <kever.yang@rock-chips.com> | 2019-08-05 21:14:45 +0800 |
commit | 85a38742e05d7908ae81773a988df28fbb103228 (patch) | |
tree | b11d38b946c1fe14fb3c318742f0f235da869121 /drivers/ram | |
parent | 86e999f1a5d3c1e88bcc03588617f732f19c0398 (diff) | |
download | u-boot-85a38742e05d7908ae81773a988df28fbb103228.tar.gz u-boot-85a38742e05d7908ae81773a988df28fbb103228.tar.bz2 u-boot-85a38742e05d7908ae81773a988df28fbb103228.zip |
rockchip: ram: add full feature rk3328 DRAM driver
This driver supports DDR3/LPDDR3/DDR4 SDRAM initialization.
Signed-off-by: YouMin Chen <cym@rock-chips.com>
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
[cherry picked from commit https://github.com/rockchip-linux/u-boot/commit/9fb0777ec3cc6a89af9d2e0969c3bfe58306a88d with minor modifications]
Signed-off-by: Matwey V. Kornilov <matwey.kornilov@gmail.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Diffstat (limited to 'drivers/ram')
-rw-r--r-- | drivers/ram/rockchip/sdram_rk3328.c | 1018 |
1 files changed, 1015 insertions, 3 deletions
diff --git a/drivers/ram/rockchip/sdram_rk3328.c b/drivers/ram/rockchip/sdram_rk3328.c index f4e0b18447..656696ac3c 100644 --- a/drivers/ram/rockchip/sdram_rk3328.c +++ b/drivers/ram/rockchip/sdram_rk3328.c @@ -2,22 +2,1029 @@ /* * (C) Copyright 2017 Rockchip Electronics Co., Ltd. */ - #include <common.h> +#include <clk.h> +#include <debug_uart.h> #include <dm.h> +#include <dt-structs.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_rk3328.h> #include <asm/arch-rockchip/grf_rk3328.h> #include <asm/arch-rockchip/sdram_common.h> +#include <asm/arch-rockchip/sdram_rk3328.h> +#include <asm/arch-rockchip/uart.h> struct dram_info { +#ifdef CONFIG_TPL_BUILD + struct rk3328_ddr_pctl_regs *pctl; + struct rk3328_ddr_phy_regs *phy; + struct clk ddr_clk; + struct rk3328_cru *cru; + struct rk3328_msch_regs *msch; + struct rk3328_ddr_grf_regs *ddr_grf; +#endif struct ram_info info; struct rk3328_grf_regs *grf; }; +#ifdef CONFIG_TPL_BUILD + +struct rk3328_sdram_channel sdram_ch; + +struct rockchip_dmc_plat { +#if CONFIG_IS_ENABLED(OF_PLATDATA) + struct dtd_rockchip_rk3328_dmc dtplat; +#else + struct rk3328_sdram_params sdram_params; +#endif + struct regmap *map; +}; + +#if CONFIG_IS_ENABLED(OF_PLATDATA) +static int conv_of_platdata(struct udevice *dev) +{ + struct rockchip_dmc_plat *plat = dev_get_platdata(dev); + struct dtd_rockchip_rk3328_dmc *dtplat = &plat->dtplat; + int ret; + + ret = regmap_init_mem_platdata(dev, dtplat->reg, + ARRAY_SIZE(dtplat->reg) / 2, + &plat->map); + if (ret) + return ret; + + return 0; +} +#endif + +static void rkclk_ddr_reset(struct dram_info *dram, + u32 ctl_srstn, u32 ctl_psrstn, + u32 phy_srstn, u32 phy_psrstn) +{ + writel(ddrctrl_srstn_req(ctl_srstn) | ddrctrl_psrstn_req(ctl_psrstn) | + ddrphy_srstn_req(phy_srstn) | ddrphy_psrstn_req(phy_psrstn), + &dram->cru->softrst_con[5]); + writel(ddrctrl_asrstn_req(ctl_srstn), &dram->cru->softrst_con[9]); +} + +static void rkclk_set_dpll(struct dram_info *dram, unsigned int mhz) +{ + unsigned int refdiv, postdiv1, postdiv2, fbdiv; + int delay = 1000; + + refdiv = 1; + if (mhz <= 300) { + postdiv1 = 4; + postdiv2 = 2; + } else if (mhz <= 400) { + postdiv1 = 6; + postdiv2 = 1; + } else if (mhz <= 600) { + postdiv1 = 4; + postdiv2 = 1; + } else if (mhz <= 800) { + postdiv1 = 3; + postdiv2 = 1; + } else if (mhz <= 1600) { + postdiv1 = 2; + postdiv2 = 1; + } else { + postdiv1 = 1; + postdiv2 = 1; + } + fbdiv = (mhz * refdiv * postdiv1 * postdiv2) / 24; + + writel(((0x1 << 4) << 16) | (0 << 4), &dram->cru->mode_con); + writel(POSTDIV1(postdiv1) | FBDIV(fbdiv), &dram->cru->dpll_con[0]); + writel(DSMPD(1) | POSTDIV2(postdiv2) | REFDIV(refdiv), + &dram->cru->dpll_con[1]); + + while (delay > 0) { + udelay(1); + if (LOCK(readl(&dram->cru->dpll_con[1]))) + break; + delay--; + } + + writel(((0x1 << 4) << 16) | (1 << 4), &dram->cru->mode_con); +} + +static void rkclk_configure_ddr(struct dram_info *dram, + struct rk3328_sdram_params *sdram_params) +{ + void __iomem *phy_base = dram->phy; + + /* choose DPLL for ddr clk source */ + clrbits_le32(PHY_REG(phy_base, 0xef), 1 << 7); + + /* for inno ddr phy need 2*freq */ + rkclk_set_dpll(dram, sdram_params->ddr_freq * 2); +} + +static void phy_soft_reset(struct dram_info *dram) +{ + void __iomem *phy_base = dram->phy; + + clrbits_le32(PHY_REG(phy_base, 0), 0x3 << 2); + udelay(1); + setbits_le32(PHY_REG(phy_base, 0), ANALOG_DERESET); + udelay(5); + setbits_le32(PHY_REG(phy_base, 0), DIGITAL_DERESET); + udelay(1); +} + +static int pctl_cfg(struct dram_info *dram, + struct rk3328_sdram_params *sdram_params) +{ + u32 i; + void __iomem *pctl_base = dram->pctl; + + for (i = 0; sdram_params->pctl_regs.pctl[i][0] != 0xFFFFFFFF; i++) { + writel(sdram_params->pctl_regs.pctl[i][1], + pctl_base + sdram_params->pctl_regs.pctl[i][0]); + } + clrsetbits_le32(pctl_base + DDR_PCTL2_PWRTMG, + (0xff << 16) | 0x1f, + ((SR_IDLE & 0xff) << 16) | (PD_IDLE & 0x1f)); + /* + * dfi_lp_en_pd=1,dfi_lp_wakeup_pd=2 + * hw_lp_idle_x32=1 + */ + if (sdram_params->dramtype == LPDDR3) { + setbits_le32(pctl_base + DDR_PCTL2_DFILPCFG0, 1); + clrsetbits_le32(pctl_base + DDR_PCTL2_DFILPCFG0, + 0xf << 4, + 2 << 4); + } + clrsetbits_le32(pctl_base + DDR_PCTL2_HWLPCTL, + 0xfff << 16, + 1 << 16); + /* disable zqcs */ + setbits_le32(pctl_base + DDR_PCTL2_ZQCTL0, 1u << 31); + setbits_le32(pctl_base + 0x2000 + DDR_PCTL2_ZQCTL0, 1u << 31); + + return 0; +} + +/* return ddrconfig value + * (-1), find ddrconfig fail + * other, the ddrconfig value + * only support cs0_row >= cs1_row + */ +static unsigned int calculate_ddrconfig(struct rk3328_sdram_params *sdram_params) +{ + static const u16 ddr_cfg_2_rbc[] = { + /*************************** + * [5:4] row(13+n) + * [3] cs(0:0 cs, 1:2 cs) + * [2] bank(0:0bank,1:8bank) + * [1:0] col(11+n) + ****************************/ + /* row, cs, bank, col */ + ((3 << 4) | (0 << 3) | (1 << 2) | 0), + ((3 << 4) | (0 << 3) | (1 << 2) | 1), + ((2 << 4) | (0 << 3) | (1 << 2) | 2), + ((3 << 4) | (0 << 3) | (1 << 2) | 2), + ((2 << 4) | (0 << 3) | (1 << 2) | 3), + ((3 << 4) | (1 << 3) | (1 << 2) | 0), + ((3 << 4) | (1 << 3) | (1 << 2) | 1), + ((2 << 4) | (1 << 3) | (1 << 2) | 2), + ((3 << 4) | (0 << 3) | (0 << 2) | 1), + ((2 << 4) | (0 << 3) | (1 << 2) | 1), + }; + + static const u16 ddr4_cfg_2_rbc[] = { + /*************************** + * [6] cs 0:0cs 1:2 cs + * [5:3] row(13+n) + * [2] cs(0:0 cs, 1:2 cs) + * [1] bw 0: 16bit 1:32bit + * [0] diebw 0:8bit 1:16bit + ***************************/ + /* cs, row, cs, bw, diebw */ + ((0 << 6) | (3 << 3) | (0 << 2) | (1 << 1) | 0), + ((1 << 6) | (2 << 3) | (0 << 2) | (1 << 1) | 0), + ((0 << 6) | (4 << 3) | (0 << 2) | (0 << 1) | 0), + ((1 << 6) | (3 << 3) | (0 << 2) | (0 << 1) | 0), + ((0 << 6) | (4 << 3) | (0 << 2) | (1 << 1) | 1), + ((1 << 6) | (3 << 3) | (0 << 2) | (1 << 1) | 1), + ((1 << 6) | (4 << 3) | (0 << 2) | (0 << 1) | 1), + ((0 << 6) | (2 << 3) | (1 << 2) | (1 << 1) | 0), + ((0 << 6) | (3 << 3) | (1 << 2) | (0 << 1) | 0), + ((0 << 6) | (3 << 3) | (1 << 2) | (1 << 1) | 1), + ((0 << 6) | (4 << 3) | (1 << 2) | (0 << 1) | 1), + }; + + u32 cs, bw, die_bw, col, row, bank; + u32 i, tmp; + u32 ddrconf = -1; + + cs = sdram_ch.rank; + bw = sdram_ch.bw; + die_bw = sdram_ch.dbw; + col = sdram_ch.col; + row = sdram_ch.cs0_row; + bank = sdram_ch.bk; + + if (sdram_params->dramtype == DDR4) { + tmp = ((cs - 1) << 6) | ((row - 13) << 3) | (bw & 0x2) | die_bw; + for (i = 10; i < 17; i++) { + if (((tmp & 0x7) == (ddr4_cfg_2_rbc[i - 10] & 0x7)) && + ((tmp & 0x3c) <= (ddr4_cfg_2_rbc[i - 10] & 0x3c)) && + ((tmp & 0x40) <= (ddr4_cfg_2_rbc[i - 10] & 0x40))) { + ddrconf = i; + goto out; + } + } + } else { + if (bank == 2) { + ddrconf = 8; + goto out; + } + + tmp = ((row - 13) << 4) | (1 << 2) | ((bw + col - 11) << 0); + for (i = 0; i < 5; i++) + if (((tmp & 0xf) == (ddr_cfg_2_rbc[i] & 0xf)) && + ((tmp & 0x30) <= (ddr_cfg_2_rbc[i] & 0x30))) { + ddrconf = i; + goto out; + } + } + +out: + if (ddrconf > 20) + printf("calculate_ddrconfig error\n"); + + return ddrconf; +} + +/* n: Unit bytes */ +static void copy_to_reg(u32 *dest, u32 *src, u32 n) +{ + int i; + + for (i = 0; i < n / sizeof(u32); i++) { + writel(*src, dest); + src++; + dest++; + } +} + +/******* + * calculate controller dram address map, and setting to register. + * argument sdram_ch.ddrconf must be right value before + * call this function. + *******/ +static void set_ctl_address_map(struct dram_info *dram, + struct rk3328_sdram_params *sdram_params) +{ + void __iomem *pctl_base = dram->pctl; + + copy_to_reg((u32 *)(pctl_base + DDR_PCTL2_ADDRMAP0), + &addrmap[sdram_ch.ddrconfig][0], 9 * 4); + if (sdram_params->dramtype == LPDDR3 && sdram_ch.row_3_4) + setbits_le32(pctl_base + DDR_PCTL2_ADDRMAP6, 1 << 31); + if (sdram_params->dramtype == DDR4 && sdram_ch.bw == 0x1) + setbits_le32(pctl_base + DDR_PCTL2_PCCFG, 1 << 8); + + if (sdram_ch.rank == 1) + clrsetbits_le32(pctl_base + DDR_PCTL2_ADDRMAP0, 0x1f, 0x1f); +} + +static void phy_dll_bypass_set(struct dram_info *dram, u32 freq) +{ + u32 tmp; + void __iomem *phy_base = dram->phy; + + setbits_le32(PHY_REG(phy_base, 0x13), 1 << 4); + clrbits_le32(PHY_REG(phy_base, 0x14), 1 << 3); + setbits_le32(PHY_REG(phy_base, 0x26), 1 << 4); + clrbits_le32(PHY_REG(phy_base, 0x27), 1 << 3); + setbits_le32(PHY_REG(phy_base, 0x36), 1 << 4); + clrbits_le32(PHY_REG(phy_base, 0x37), 1 << 3); + setbits_le32(PHY_REG(phy_base, 0x46), 1 << 4); + clrbits_le32(PHY_REG(phy_base, 0x47), 1 << 3); + setbits_le32(PHY_REG(phy_base, 0x56), 1 << 4); + clrbits_le32(PHY_REG(phy_base, 0x57), 1 << 3); + + if (freq <= (400 * MHz)) + /* DLL bypass */ + setbits_le32(PHY_REG(phy_base, 0xa4), 0x1f); + else + clrbits_le32(PHY_REG(phy_base, 0xa4), 0x1f); + if (freq <= (680 * MHz)) + tmp = 2; + else + tmp = 1; + writel(tmp, PHY_REG(phy_base, 0x28)); + writel(tmp, PHY_REG(phy_base, 0x38)); + writel(tmp, PHY_REG(phy_base, 0x48)); + writel(tmp, PHY_REG(phy_base, 0x58)); +} + +static void set_ds_odt(struct dram_info *dram, + struct rk3328_sdram_params *sdram_params) +{ + u32 cmd_drv, clk_drv, dqs_drv, dqs_odt; + void __iomem *phy_base = dram->phy; + + if (sdram_params->dramtype == DDR3) { + cmd_drv = PHY_DDR3_RON_RTT_34ohm; + clk_drv = PHY_DDR3_RON_RTT_45ohm; + dqs_drv = PHY_DDR3_RON_RTT_34ohm; + dqs_odt = PHY_DDR3_RON_RTT_225ohm; + } else { + cmd_drv = PHY_DDR4_LPDDR3_RON_RTT_34ohm; + clk_drv = PHY_DDR4_LPDDR3_RON_RTT_43ohm; + dqs_drv = PHY_DDR4_LPDDR3_RON_RTT_34ohm; + dqs_odt = PHY_DDR4_LPDDR3_RON_RTT_240ohm; + } + /* DS */ + writel(cmd_drv, PHY_REG(phy_base, 0x11)); + clrsetbits_le32(PHY_REG(phy_base, 0x12), 0x1f << 3, cmd_drv << 3); + writel(clk_drv, PHY_REG(phy_base, 0x16)); + writel(clk_drv, PHY_REG(phy_base, 0x18)); + writel(dqs_drv, PHY_REG(phy_base, 0x20)); + writel(dqs_drv, PHY_REG(phy_base, 0x2f)); + writel(dqs_drv, PHY_REG(phy_base, 0x30)); + writel(dqs_drv, PHY_REG(phy_base, 0x3f)); + writel(dqs_drv, PHY_REG(phy_base, 0x40)); + writel(dqs_drv, PHY_REG(phy_base, 0x4f)); + writel(dqs_drv, PHY_REG(phy_base, 0x50)); + writel(dqs_drv, PHY_REG(phy_base, 0x5f)); + /* ODT */ + writel(dqs_odt, PHY_REG(phy_base, 0x21)); + writel(dqs_odt, PHY_REG(phy_base, 0x2e)); + writel(dqs_odt, PHY_REG(phy_base, 0x31)); + writel(dqs_odt, PHY_REG(phy_base, 0x3e)); + writel(dqs_odt, PHY_REG(phy_base, 0x41)); + writel(dqs_odt, PHY_REG(phy_base, 0x4e)); + writel(dqs_odt, PHY_REG(phy_base, 0x51)); + writel(dqs_odt, PHY_REG(phy_base, 0x5e)); +} + +static void phy_cfg(struct dram_info *dram, + struct rk3328_sdram_params *sdram_params) +{ + u32 i; + void __iomem *phy_base = dram->phy; + + phy_dll_bypass_set(dram, sdram_params->ddr_freq); + for (i = 0; sdram_params->phy_regs.phy[i][0] != 0xFFFFFFFF; i++) { + writel(sdram_params->phy_regs.phy[i][1], + phy_base + sdram_params->phy_regs.phy[i][0]); + } + if (sdram_ch.bw == 2) { + clrsetbits_le32(PHY_REG(phy_base, 0), 0xf << 4, 0xf << 4); + } else { + clrsetbits_le32(PHY_REG(phy_base, 0), 0xf << 4, 3 << 4); + /* disable DQS2,DQS3 tx dll for saving power */ + clrbits_le32(PHY_REG(phy_base, 0x46), 1 << 3); + clrbits_le32(PHY_REG(phy_base, 0x56), 1 << 3); + } + set_ds_odt(dram, sdram_params); + /* deskew */ + setbits_le32(PHY_REG(phy_base, 2), 8); + copy_to_reg(PHY_REG(phy_base, 0xb0), + &sdram_params->skew.a0_a1_skew[0], 15 * 4); + copy_to_reg(PHY_REG(phy_base, 0x70), + &sdram_params->skew.cs0_dm0_skew[0], 44 * 4); + copy_to_reg(PHY_REG(phy_base, 0xc0), + &sdram_params->skew.cs0_dm1_skew[0], 44 * 4); +} + +static int update_refresh_reg(struct dram_info *dram) +{ + void __iomem *pctl_base = dram->pctl; + u32 ret; + + ret = readl(pctl_base + DDR_PCTL2_RFSHCTL3) ^ (1 << 1); + writel(ret, pctl_base + DDR_PCTL2_RFSHCTL3); + + return 0; +} + +static int data_training(struct dram_info *dram, u32 cs, u32 dramtype) +{ + u32 ret; + u32 dis_auto_zq = 0; + void __iomem *pctl_base = dram->pctl; + void __iomem *phy_base = dram->phy; + + /* disable zqcs */ + if (!(readl(pctl_base + DDR_PCTL2_ZQCTL0) & + (1ul << 31))) { + dis_auto_zq = 1; + setbits_le32(pctl_base + DDR_PCTL2_ZQCTL0, 1 << 31); + } + /* disable auto refresh */ + setbits_le32(pctl_base + DDR_PCTL2_RFSHCTL3, 1); + update_refresh_reg(dram); + + if (dramtype == DDR4) { + clrsetbits_le32(PHY_REG(phy_base, 0x29), 0x3, 0); + clrsetbits_le32(PHY_REG(phy_base, 0x39), 0x3, 0); + clrsetbits_le32(PHY_REG(phy_base, 0x49), 0x3, 0); + clrsetbits_le32(PHY_REG(phy_base, 0x59), 0x3, 0); + } + /* choose training cs */ + clrsetbits_le32(PHY_REG(phy_base, 2), 0x33, (0x20 >> cs)); + /* enable gate training */ + clrsetbits_le32(PHY_REG(phy_base, 2), 0x33, (0x20 >> cs) | 1); + udelay(50); + ret = readl(PHY_REG(phy_base, 0xff)); + /* disable gate training */ + clrsetbits_le32(PHY_REG(phy_base, 2), 0x33, (0x20 >> cs) | 0); + /* restore zqcs */ + if (dis_auto_zq) + clrbits_le32(pctl_base + DDR_PCTL2_ZQCTL0, 1 << 31); + /* restore auto refresh */ + clrbits_le32(pctl_base + DDR_PCTL2_RFSHCTL3, 1); + update_refresh_reg(dram); + + if (dramtype == DDR4) { + clrsetbits_le32(PHY_REG(phy_base, 0x29), 0x3, 0x2); + clrsetbits_le32(PHY_REG(phy_base, 0x39), 0x3, 0x2); + clrsetbits_le32(PHY_REG(phy_base, 0x49), 0x3, 0x2); + clrsetbits_le32(PHY_REG(phy_base, 0x59), 0x3, 0x2); + } + + if (ret & 0x10) { + ret = -1; + } else { + ret = (ret & 0xf) ^ (readl(PHY_REG(phy_base, 0)) >> 4); + ret = (ret == 0) ? 0 : -1; + } + return ret; +} + +/* rank = 1: cs0 + * rank = 2: cs1 + * rank = 3: cs0 & cs1 + * note: be careful of keep mr original val + */ +static int write_mr(struct dram_info *dram, u32 rank, u32 mr_num, u32 arg, + u32 dramtype) +{ + void __iomem *pctl_base = dram->pctl; + + while (readl(pctl_base + DDR_PCTL2_MRSTAT) & MR_WR_BUSY) + continue; + if (dramtype == DDR3 || dramtype == DDR4) { + writel((mr_num << 12) | (rank << 4) | (0 << 0), + pctl_base + DDR_PCTL2_MRCTRL0); + writel(arg, pctl_base + DDR_PCTL2_MRCTRL1); + } else { + writel((rank << 4) | (0 << 0), + pctl_base + DDR_PCTL2_MRCTRL0); + writel((mr_num << 8) | (arg & 0xff), + pctl_base + DDR_PCTL2_MRCTRL1); + } + + setbits_le32(pctl_base + DDR_PCTL2_MRCTRL0, 1u << 31); + while (readl(pctl_base + DDR_PCTL2_MRCTRL0) & (1u << 31)) + continue; + while (readl(pctl_base + DDR_PCTL2_MRSTAT) & MR_WR_BUSY) + continue; + + return 0; +} + +/* + * rank : 1:cs0, 2:cs1, 3:cs0&cs1 + * vrefrate: 4500: 45%, + */ +static int write_vrefdq(struct dram_info *dram, u32 rank, u32 vrefrate, + u32 dramtype) +{ + u32 tccd_l, value; + u32 dis_auto_zq = 0; + void __iomem *pctl_base = dram->pctl; + + if (dramtype != DDR4 || vrefrate < 4500 || vrefrate > 9200) + return -1; + + tccd_l = (readl(pctl_base + DDR_PCTL2_DRAMTMG4) >> 16) & 0xf; + tccd_l = (tccd_l - 4) << 10; + + if (vrefrate > 7500) { + /* range 1 */ + value = ((vrefrate - 6000) / 65) | tccd_l; + } else { + /* range 2 */ + value = ((vrefrate - 4500) / 65) | tccd_l | (1 << 6); + } + + /* disable zqcs */ + if (!(readl(pctl_base + DDR_PCTL2_ZQCTL0) & + (1ul << 31))) { + dis_auto_zq = 1; + setbits_le32(pctl_base + DDR_PCTL2_ZQCTL0, 1 << 31); + } + /* disable auto refresh */ + setbits_le32(pctl_base + DDR_PCTL2_RFSHCTL3, 1); + update_refresh_reg(dram); + + /* enable vrefdq calibratin */ + write_mr(dram, rank, 6, value | (1 << 7), dramtype); + udelay(1);/* tvrefdqe */ + /* write vrefdq value */ + write_mr(dram, rank, 6, value | (1 << 7), dramtype); + udelay(1);/* tvref_time */ + write_mr(dram, rank, 6, value | (0 << 7), dramtype); + udelay(1);/* tvrefdqx */ + + /* restore zqcs */ + if (dis_auto_zq) + clrbits_le32(pctl_base + DDR_PCTL2_ZQCTL0, 1 << 31); + /* restore auto refresh */ + clrbits_le32(pctl_base + DDR_PCTL2_RFSHCTL3, 1); + update_refresh_reg(dram); + + return 0; +} + +#define _MAX_(x, y) ((x) > (y) ? (x) : (y)) + +static void rx_deskew_switch_adjust(struct dram_info *dram) +{ + u32 i, deskew_val; + u32 gate_val = 0; + void __iomem *phy_base = dram->phy; + + for (i = 0; i < 4; i++) + gate_val = _MAX_(readl(PHY_REG(phy_base, 0xfb + i)), gate_val); + + deskew_val = (gate_val >> 3) + 1; + deskew_val = (deskew_val > 0x1f) ? 0x1f : deskew_val; + clrsetbits_le32(PHY_REG(phy_base, 0x6e), 0xc, (deskew_val & 0x3) << 2); + clrsetbits_le32(PHY_REG(phy_base, 0x6f), 0x7 << 4, + (deskew_val & 0x1c) << 2); +} + +#undef _MAX_ + +static void tx_deskew_switch_adjust(struct dram_info *dram) +{ + void __iomem *phy_base = dram->phy; + + clrsetbits_le32(PHY_REG(phy_base, 0x6e), 0x3, 1); +} + +static void set_ddrconfig(struct dram_info *dram, u32 ddrconfig) +{ + writel(ddrconfig, &dram->msch->ddrconf); +} + +static void dram_all_config(struct dram_info *dram, + struct rk3328_sdram_params *sdram_params) +{ + u32 sys_reg = 0, tmp = 0; + + set_ddrconfig(dram, sdram_ch.ddrconfig); + + sys_reg |= SYS_REG_ENC_DDRTYPE(sdram_params->dramtype); + sys_reg |= SYS_REG_ENC_ROW_3_4(sdram_ch.row_3_4, 0); + sys_reg |= SYS_REG_ENC_RANK(sdram_ch.rank, 0); + sys_reg |= SYS_REG_ENC_COL(sdram_ch.col, 0); + sys_reg |= SYS_REG_ENC_BK(sdram_ch.bk, 0); + SYS_REG_ENC_CS0_ROW(sdram_ch.cs0_row, sys_reg, tmp, 0); + if (sdram_ch.cs1_row) + SYS_REG_ENC_CS1_ROW(sdram_ch.cs1_row, sys_reg, tmp, 0); + sys_reg |= SYS_REG_ENC_BW(sdram_ch.bw, 0); + sys_reg |= SYS_REG_ENC_DBW(sdram_ch.dbw, 0); + + writel(sys_reg, &dram->grf->os_reg[2]); + + writel(sdram_ch.noc_timings.ddrtiming.d32, &dram->msch->ddrtiming); + + writel(sdram_ch.noc_timings.ddrmode.d32, &dram->msch->ddrmode); + writel(sdram_ch.noc_timings.readlatency, &dram->msch->readlatency); + + writel(sdram_ch.noc_timings.activate.d32, &dram->msch->activate); + writel(sdram_ch.noc_timings.devtodev.d32, &dram->msch->devtodev); + writel(sdram_ch.noc_timings.ddr4timing.d32, &dram->msch->ddr4_timing); + writel(sdram_ch.noc_timings.agingx0, &dram->msch->aging0); + writel(sdram_ch.noc_timings.agingx0, &dram->msch->aging1); + writel(sdram_ch.noc_timings.agingx0, &dram->msch->aging2); + writel(sdram_ch.noc_timings.agingx0, &dram->msch->aging3); + writel(sdram_ch.noc_timings.agingx0, &dram->msch->aging4); + writel(sdram_ch.noc_timings.agingx0, &dram->msch->aging5); +} + +static void enable_low_power(struct dram_info *dram, + struct rk3328_sdram_params *sdram_params) +{ + void __iomem *pctl_base = dram->pctl; + + /* enable upctl2 axi clock auto gating */ + writel(0x00800000, &dram->ddr_grf->ddr_grf_con[0]); + writel(0x20012001, &dram->ddr_grf->ddr_grf_con[2]); + /* enable upctl2 core clock auto gating */ + writel(0x001e001a, &dram->ddr_grf->ddr_grf_con[2]); + /* enable sr, pd */ + if (PD_IDLE == 0) + clrbits_le32(pctl_base + DDR_PCTL2_PWRCTL, (1 << 1)); + else + setbits_le32(pctl_base + DDR_PCTL2_PWRCTL, (1 << 1)); + if (SR_IDLE == 0) + clrbits_le32(pctl_base + DDR_PCTL2_PWRCTL, 1); + else + setbits_le32(pctl_base + DDR_PCTL2_PWRCTL, 1); + setbits_le32(pctl_base + DDR_PCTL2_PWRCTL, (1 << 3)); +} + +static int sdram_init(struct dram_info *dram, + struct rk3328_sdram_params *sdram_params, u32 pre_init) +{ + void __iomem *pctl_base = dram->pctl; + + rkclk_ddr_reset(dram, 1, 1, 1, 1); + udelay(10); + /* + * dereset ddr phy psrstn to config pll, + * if using phy pll psrstn must be dereset + * before config pll + */ + rkclk_ddr_reset(dram, 1, 1, 1, 0); + rkclk_configure_ddr(dram, sdram_params); + if (pre_init == 0) { + switch (sdram_params->dramtype) { + case DDR3: + printf("DDR3\n"); + break; + case DDR4: + printf("DDR4\n"); + break; + case LPDDR3: + default: + printf("LPDDR3\n"); + break; + } + } + /* release phy srst to provide clk to ctrl */ + rkclk_ddr_reset(dram, 1, 1, 0, 0); + udelay(10); + phy_soft_reset(dram); + /* release ctrl presetn, and config ctl registers */ + rkclk_ddr_reset(dram, 1, 0, 0, 0); + pctl_cfg(dram, sdram_params); + sdram_ch.ddrconfig = calculate_ddrconfig(sdram_params); + set_ctl_address_map(dram, sdram_params); + phy_cfg(dram, sdram_params); + + /* enable dfi_init_start to init phy after ctl srstn deassert */ + setbits_le32(pctl_base + DDR_PCTL2_DFIMISC, (1 << 5) | (1 << 4)); + rkclk_ddr_reset(dram, 0, 0, 0, 0); + /* wait for dfi_init_done and dram init complete */ + while ((readl(pctl_base + DDR_PCTL2_STAT) & 0x7) == 0) + continue; + + /* do ddr gate training */ + if (data_training(dram, 0, sdram_params->dramtype) != 0) { + printf("data training error\n"); + return -1; + } + + if (sdram_params->dramtype == DDR4) + write_vrefdq(dram, 0x3, 5670, sdram_params->dramtype); + + if (pre_init == 0) { + rx_deskew_switch_adjust(dram); + tx_deskew_switch_adjust(dram); + } + + dram_all_config(dram, sdram_params); + enable_low_power(dram, sdram_params); + + return 0; +} + +static u64 dram_detect_cap(struct dram_info *dram, + struct rk3328_sdram_params *sdram_params, + unsigned char channel) +{ + void __iomem *pctl_base = dram->pctl; + + /* + * for ddr3: ddrconf = 3 + * for ddr4: ddrconf = 12 + * for lpddr3: ddrconf = 3 + * default bw = 1 + */ + u32 bk, bktmp; + u32 col, coltmp; + u32 row, rowtmp, row_3_4; + void __iomem *test_addr, *test_addr1; + u32 dbw; + u32 cs; + u32 bw = 1; + u64 cap = 0; + u32 dram_type = sdram_params->dramtype; + u32 pwrctl; + + if (dram_type != DDR4) { + /* detect col and bk for ddr3/lpddr3 */ + coltmp = 12; + bktmp = 3; + rowtmp = 16; + + for (col = coltmp; col >= 9; col -= 1) { + writel(0, SDRAM_ADDR); + test_addr = (void __iomem *)(SDRAM_ADDR + + (1ul << (col + bw - 1ul))); + writel(PATTERN, test_addr); + if ((readl(test_addr) == PATTERN) && + (readl(SDRAM_ADDR) == 0)) + break; + } + if (col == 8) { + printf("col error\n"); + goto cap_err; + } + + test_addr = (void __iomem *)(SDRAM_ADDR + + (1ul << (coltmp + bktmp + bw - 1ul))); + writel(0, SDRAM_ADDR); + writel(PATTERN, test_addr); + if ((readl(test_addr) == PATTERN) && + (readl(SDRAM_ADDR) == 0)) + bk = 3; + else + bk = 2; + if (dram_type == LPDDR3) + dbw = 2; + else + dbw = 1; + } else { + /* detect bg for ddr4 */ + coltmp = 10; + bktmp = 4; + rowtmp = 17; + + col = 10; + bk = 2; + test_addr = (void __iomem *)(SDRAM_ADDR + + (1ul << (coltmp + bw + 1ul))); + writel(0, SDRAM_ADDR); + writel(PATTERN, test_addr); + if ((readl(test_addr) == PATTERN) && + (readl(SDRAM_ADDR) == 0)) + dbw = 0; + else + dbw = 1; + } + /* detect row */ + for (row = rowtmp; row > 12; row--) { + writel(0, SDRAM_ADDR); + test_addr = (void __iomem *)(SDRAM_ADDR + + (1ul << (row + bktmp + coltmp + bw - 1ul))); + writel(PATTERN, test_addr); + if ((readl(test_addr) == PATTERN) && + (readl(SDRAM_ADDR) == 0)) + break; + } + if (row == 12) { + printf("row error"); + goto cap_err; + } + /* detect row_3_4 */ + test_addr = SDRAM_ADDR; + test_addr1 = (void __iomem *)(SDRAM_ADDR + + (0x3ul << (row + bktmp + coltmp + bw - 1ul - 1ul))); + + writel(0, test_addr); + writel(PATTERN, test_addr1); + if ((readl(test_addr) == 0) && + (readl(test_addr1) == PATTERN)) + row_3_4 = 0; + else + row_3_4 = 1; + + /* disable auto low-power */ + pwrctl = readl(pctl_base + DDR_PCTL2_PWRCTL); + writel(0, pctl_base + DDR_PCTL2_PWRCTL); + + /* bw and cs detect using phy read gate training */ + if (data_training(dram, 1, dram_type) == 0) + cs = 1; + else + cs = 0; + + bw = 2; + + /* restore auto low-power */ + writel(pwrctl, pctl_base + DDR_PCTL2_PWRCTL); + + sdram_ch.rank = cs + 1; + sdram_ch.col = col; + sdram_ch.bk = bk; + sdram_ch.dbw = dbw; + sdram_ch.bw = bw; + sdram_ch.cs0_row = row; + if (cs) + sdram_ch.cs1_row = row; + else + sdram_ch.cs1_row = 0; + sdram_ch.row_3_4 = row_3_4; + + if (dram_type == DDR4) + cap = 1llu << (cs + row + bk + col + ((dbw == 0) ? 2 : 1) + bw); + else + cap = 1llu << (cs + row + bk + col + bw); + + return cap; + +cap_err: + return 0; +} + +static u32 remodify_sdram_params(struct rk3328_sdram_params *sdram_params) +{ + u32 tmp = 0, tmp_adr = 0, i; + + for (i = 0; sdram_params->pctl_regs.pctl[i][0] != 0xFFFFFFFF; i++) { + if (sdram_params->pctl_regs.pctl[i][0] == 0) { + tmp = sdram_params->pctl_regs.pctl[i][1];/* MSTR */ + tmp_adr = i; + } + } + + tmp &= ~((3ul << 30) | (3ul << 24) | (3ul << 12)); + + switch (sdram_ch.dbw) { + case 2: + tmp |= (3ul << 30); + break; + case 1: + tmp |= (2ul << 30); + break; + case 0: + default: + tmp |= (1ul << 30); + break; + } + + if (sdram_ch.rank == 2) + tmp |= 3 << 24; + else + tmp |= 1 << 24; + + tmp |= (2 - sdram_ch.bw) << 12; + + sdram_params->pctl_regs.pctl[tmp_adr][1] = tmp; + + if (sdram_ch.bw == 2) + sdram_ch.noc_timings.ddrtiming.b.bwratio = 0; + else + sdram_ch.noc_timings.ddrtiming.b.bwratio = 1; + + return 0; +} + +static int dram_detect_cs1_row(struct rk3328_sdram_params *sdram_params, + unsigned char channel) +{ + u32 ret = 0; + u32 cs1_bit; + void __iomem *test_addr, *cs1_addr; + u32 row, bktmp, coltmp, bw; + u32 ddrconf = sdram_ch.ddrconfig; + + if (sdram_ch.rank == 2) { + cs1_bit = addrmap[ddrconf][0] + 8; + + if (cs1_bit > 31) + goto out; + + cs1_addr = (void __iomem *)(1ul << cs1_bit); + if (cs1_bit < 20) + cs1_bit = 1; + else + cs1_bit = 0; + + if (sdram_params->dramtype == DDR4) { + if (sdram_ch.dbw == 0) + bktmp = sdram_ch.bk + 2; + else + bktmp = sdram_ch.bk + 1; + } else { + bktmp = sdram_ch.bk; + } + bw = sdram_ch.bw; + coltmp = sdram_ch.col; + + /* detect cs1 row */ + for (row = sdram_ch.cs0_row; row > 12; row--) { + test_addr = (void __iomem *)(SDRAM_ADDR + cs1_addr + + (1ul << (row + cs1_bit + bktmp + + coltmp + bw - 1ul))); + writel(0, SDRAM_ADDR + cs1_addr); + writel(PATTERN, test_addr); + if ((readl(test_addr) == PATTERN) && + (readl(SDRAM_ADDR + cs1_addr) == 0)) { + ret = row; + break; + } + } + } + +out: + return ret; +} + +static int sdram_init_detect(struct dram_info *dram, + struct rk3328_sdram_params *sdram_params) +{ + debug("Starting SDRAM initialization...\n"); + + memcpy(&sdram_ch, &sdram_params->ch, + sizeof(struct rk3328_sdram_channel)); + + sdram_init(dram, sdram_params, 1); + dram_detect_cap(dram, sdram_params, 0); + + /* modify bw, cs related timing */ + remodify_sdram_params(sdram_params); + /* reinit sdram by real dram cap */ + sdram_init(dram, sdram_params, 0); + + /* redetect cs1 row */ + sdram_ch.cs1_row = + dram_detect_cs1_row(sdram_params, 0); + + return 0; +} + +static int rk3328_dmc_init(struct udevice *dev) +{ + struct dram_info *priv = dev_get_priv(dev); + struct rockchip_dmc_plat *plat = dev_get_platdata(dev); + int ret; + +#if !CONFIG_IS_ENABLED(OF_PLATDATA) + struct rk3328_sdram_params *params = &plat->sdram_params; +#else + struct dtd_rockchip_rk3328_dmc *dtplat = &plat->dtplat; + struct rk3328_sdram_params *params = + (void *)dtplat->rockchip_sdram_params; + + ret = conv_of_platdata(dev); + if (ret) + return ret; +#endif + priv->phy = regmap_get_range(plat->map, 0); + priv->pctl = regmap_get_range(plat->map, 1); + priv->grf = regmap_get_range(plat->map, 2); + priv->cru = regmap_get_range(plat->map, 3); + priv->msch = regmap_get_range(plat->map, 4); + priv->ddr_grf = regmap_get_range(plat->map, 5); + + debug("%s phy %p pctrl %p grf %p cru %p msch %p ddr_grf %p\n", + __func__, priv->phy, priv->pctl, priv->grf, priv->cru, + priv->msch, priv->ddr_grf); + ret = sdram_init_detect(priv, params); + if (ret < 0) { + printf("%s DRAM init failed%d\n", __func__, ret); + return ret; + } + + return 0; +} + +static int rk3328_dmc_ofdata_to_platdata(struct udevice *dev) +{ +#if !CONFIG_IS_ENABLED(OF_PLATDATA) + struct rockchip_dmc_plat *plat = dev_get_platdata(dev); + int ret; + + ret = dev_read_u32_array(dev, "rockchip,sdram-params", + (u32 *)&plat->sdram_params, + sizeof(plat->sdram_params) / sizeof(u32)); + if (ret) { + printf("%s: Cannot read rockchip,sdram-params %d\n", + __func__, ret); + return ret; + } + ret = regmap_init_mem(dev, &plat->map); + if (ret) + printf("%s: regmap failed %d\n", __func__, ret); +#endif + return 0; +} + +#endif + static int rk3328_dmc_probe(struct udevice *dev) { +#ifdef CONFIG_TPL_BUILD + if (rk3328_dmc_init(dev)) + return 0; +#else struct dram_info *priv = dev_get_priv(dev); priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF); @@ -25,7 +1032,7 @@ static int rk3328_dmc_probe(struct udevice *dev) priv->info.base = CONFIG_SYS_SDRAM_BASE; priv->info.size = rockchip_sdram_size( (phys_addr_t)&priv->grf->os_reg[2]); - +#endif return 0; } @@ -42,7 +1049,6 @@ static struct ram_ops rk3328_dmc_ops = { .get_info = rk3328_dmc_get_info, }; - static const struct udevice_id rk3328_dmc_ids[] = { { .compatible = "rockchip,rk3328-dmc" }, { } @@ -53,6 +1059,12 @@ U_BOOT_DRIVER(dmc_rk3328) = { .id = UCLASS_RAM, .of_match = rk3328_dmc_ids, .ops = &rk3328_dmc_ops, +#ifdef CONFIG_TPL_BUILD + .ofdata_to_platdata = rk3328_dmc_ofdata_to_platdata, +#endif .probe = rk3328_dmc_probe, .priv_auto_alloc_size = sizeof(struct dram_info), +#ifdef CONFIG_TPL_BUILD + .platdata_auto_alloc_size = sizeof(struct rockchip_dmc_plat), +#endif }; 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