/* * sun8i H3 platform dram controller init * * (C) Copyright 2007-2015 Allwinner Technology Co. * Jerry Wang <wangflord@allwinnertech.com> * (C) Copyright 2015 Vishnu Patekar <vishnupatekar0510@gmail.com> * (C) Copyright 2015 Hans de Goede <hdegoede@redhat.com> * (C) Copyright 2015 Jens Kuske <jenskuske@gmail.com> * * SPDX-License-Identifier: GPL-2.0+ */ #include <common.h> #include <asm/io.h> #include <asm/arch/clock.h> #include <asm/arch/dram.h> #include <asm/arch/cpu.h> #include <linux/kconfig.h> static void mctl_phy_init(u32 val) { struct sunxi_mctl_ctl_reg * const mctl_ctl = (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE; writel(val | PIR_INIT, &mctl_ctl->pir); mctl_await_completion(&mctl_ctl->pgsr[0], PGSR_INIT_DONE, 0x1); } static void mctl_set_bit_delays(struct dram_para *para) { struct sunxi_mctl_ctl_reg * const mctl_ctl = (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE; int i, j; clrbits_le32(&mctl_ctl->pgcr[0], 1 << 26); for (i = 0; i < NR_OF_BYTE_LANES; i++) for (j = 0; j < LINES_PER_BYTE_LANE; j++) writel(DXBDLR_WRITE_DELAY(para->dx_write_delays[i][j]) | DXBDLR_READ_DELAY(para->dx_read_delays[i][j]), &mctl_ctl->dx[i].bdlr[j]); for (i = 0; i < 31; i++) writel(ACBDLR_WRITE_DELAY(para->ac_delays[i]), &mctl_ctl->acbdlr[i]); #ifdef CONFIG_MACH_SUN8I_R40 /* DQSn, DMn, DQn output enable bit delay */ for (i = 0; i < 4; i++) writel(0x6 << 24, &mctl_ctl->dx[i].sdlr); #endif setbits_le32(&mctl_ctl->pgcr[0], 1 << 26); } enum { MBUS_PORT_CPU = 0, MBUS_PORT_GPU = 1, MBUS_PORT_UNUSED = 2, MBUS_PORT_DMA = 3, MBUS_PORT_VE = 4, MBUS_PORT_CSI = 5, MBUS_PORT_NAND = 6, MBUS_PORT_SS = 7, MBUS_PORT_TS = 8, MBUS_PORT_DI = 9, MBUS_PORT_DE = 10, MBUS_PORT_DE_CFD = 11, MBUS_PORT_UNKNOWN1 = 12, MBUS_PORT_UNKNOWN2 = 13, MBUS_PORT_UNKNOWN3 = 14, }; enum { MBUS_QOS_LOWEST = 0, MBUS_QOS_LOW, MBUS_QOS_HIGH, MBUS_QOS_HIGHEST }; inline void mbus_configure_port(u8 port, bool bwlimit, bool priority, u8 qos, /* MBUS_QOS_LOWEST .. MBUS_QOS_HIGEST */ u8 waittime, /* 0 .. 0xf */ u8 acs, /* 0 .. 0xff */ u16 bwl0, /* 0 .. 0xffff, bandwidth limit in MB/s */ u16 bwl1, u16 bwl2) { struct sunxi_mctl_com_reg * const mctl_com = (struct sunxi_mctl_com_reg *)SUNXI_DRAM_COM_BASE; const u32 cfg0 = ( (bwlimit ? (1 << 0) : 0) | (priority ? (1 << 1) : 0) | ((qos & 0x3) << 2) | ((waittime & 0xf) << 4) | ((acs & 0xff) << 8) | (bwl0 << 16) ); const u32 cfg1 = ((u32)bwl2 << 16) | (bwl1 & 0xffff); debug("MBUS port %d cfg0 %08x cfg1 %08x\n", port, cfg0, cfg1); writel(cfg0, &mctl_com->mcr[port][0]); writel(cfg1, &mctl_com->mcr[port][1]); } #define MBUS_CONF(port, bwlimit, qos, acs, bwl0, bwl1, bwl2) \ mbus_configure_port(MBUS_PORT_ ## port, bwlimit, false, \ MBUS_QOS_ ## qos, 0, acs, bwl0, bwl1, bwl2) static void mctl_set_master_priority_h3(void) { struct sunxi_mctl_com_reg * const mctl_com = (struct sunxi_mctl_com_reg *)SUNXI_DRAM_COM_BASE; /* enable bandwidth limit windows and set windows size 1us */ writel((1 << 16) | (400 << 0), &mctl_com->bwcr); /* set cpu high priority */ writel(0x00000001, &mctl_com->mapr); MBUS_CONF( CPU, true, HIGHEST, 0, 512, 256, 128); MBUS_CONF( GPU, true, HIGH, 0, 1536, 1024, 256); MBUS_CONF(UNUSED, true, HIGHEST, 0, 512, 256, 96); MBUS_CONF( DMA, true, HIGHEST, 0, 256, 128, 32); MBUS_CONF( VE, true, HIGH, 0, 1792, 1600, 256); MBUS_CONF( CSI, true, HIGHEST, 0, 256, 128, 32); MBUS_CONF( NAND, true, HIGH, 0, 256, 128, 64); MBUS_CONF( SS, true, HIGHEST, 0, 256, 128, 64); MBUS_CONF( TS, true, HIGHEST, 0, 256, 128, 64); MBUS_CONF( DI, true, HIGH, 0, 1024, 256, 64); MBUS_CONF( DE, true, HIGHEST, 3, 8192, 6120, 1024); MBUS_CONF(DE_CFD, true, HIGH, 0, 1024, 288, 64); } static void mctl_set_master_priority_a64(void) { struct sunxi_mctl_com_reg * const mctl_com = (struct sunxi_mctl_com_reg *)SUNXI_DRAM_COM_BASE; /* enable bandwidth limit windows and set windows size 1us */ writel(399, &mctl_com->tmr); writel((1 << 16), &mctl_com->bwcr); /* Port 2 is reserved per Allwinner's linux-3.10 source, yet they * initialise it */ MBUS_CONF( CPU, true, HIGHEST, 0, 160, 100, 80); MBUS_CONF( GPU, false, HIGH, 0, 1536, 1400, 256); MBUS_CONF(UNUSED, true, HIGHEST, 0, 512, 256, 96); MBUS_CONF( DMA, true, HIGH, 0, 256, 80, 100); MBUS_CONF( VE, true, HIGH, 0, 1792, 1600, 256); MBUS_CONF( CSI, true, HIGH, 0, 256, 128, 0); MBUS_CONF( NAND, true, HIGH, 0, 256, 128, 64); MBUS_CONF( SS, true, HIGHEST, 0, 256, 128, 64); MBUS_CONF( TS, true, HIGHEST, 0, 256, 128, 64); MBUS_CONF( DI, true, HIGH, 0, 1024, 256, 64); MBUS_CONF( DE, true, HIGH, 2, 8192, 6144, 2048); MBUS_CONF(DE_CFD, true, HIGH, 0, 1280, 144, 64); writel(0x81000004, &mctl_com->mdfs_bwlr[2]); } static void mctl_set_master_priority_h5(void) { struct sunxi_mctl_com_reg * const mctl_com = (struct sunxi_mctl_com_reg *)SUNXI_DRAM_COM_BASE; /* enable bandwidth limit windows and set windows size 1us */ writel(399, &mctl_com->tmr); writel((1 << 16), &mctl_com->bwcr); /* set cpu high priority */ writel(0x00000001, &mctl_com->mapr); /* Port 2 is reserved per Allwinner's linux-3.10 source, yet * they initialise it */ MBUS_CONF( CPU, true, HIGHEST, 0, 300, 260, 150); MBUS_CONF( GPU, true, HIGHEST, 0, 600, 400, 200); MBUS_CONF(UNUSED, true, HIGHEST, 0, 512, 256, 96); MBUS_CONF( DMA, true, HIGHEST, 0, 256, 128, 32); MBUS_CONF( VE, true, HIGHEST, 0, 1900, 1500, 1000); MBUS_CONF( CSI, true, HIGHEST, 0, 150, 120, 100); MBUS_CONF( NAND, true, HIGH, 0, 256, 128, 64); MBUS_CONF( SS, true, HIGHEST, 0, 256, 128, 64); MBUS_CONF( TS, true, HIGHEST, 0, 256, 128, 64); MBUS_CONF( DI, true, HIGH, 0, 1024, 256, 64); MBUS_CONF( DE, true, HIGHEST, 3, 3400, 2400, 1024); MBUS_CONF(DE_CFD, true, HIGHEST, 0, 600, 400, 200); } static void mctl_set_master_priority_r40(void) { struct sunxi_mctl_com_reg * const mctl_com = (struct sunxi_mctl_com_reg *)SUNXI_DRAM_COM_BASE; /* enable bandwidth limit windows and set windows size 1us */ writel(399, &mctl_com->tmr); writel((1 << 16), &mctl_com->bwcr); /* set cpu high priority */ writel(0x00000001, &mctl_com->mapr); /* Port 2 is reserved per Allwinner's linux-3.10 source, yet * they initialise it */ MBUS_CONF( CPU, true, HIGHEST, 0, 300, 260, 150); MBUS_CONF( GPU, true, HIGHEST, 0, 600, 400, 200); MBUS_CONF( UNUSED, true, HIGHEST, 0, 512, 256, 96); MBUS_CONF( DMA, true, HIGHEST, 0, 256, 128, 32); MBUS_CONF( VE, true, HIGHEST, 0, 1900, 1500, 1000); MBUS_CONF( CSI, true, HIGHEST, 0, 150, 120, 100); MBUS_CONF( NAND, true, HIGH, 0, 256, 128, 64); MBUS_CONF( SS, true, HIGHEST, 0, 256, 128, 64); MBUS_CONF( TS, true, HIGHEST, 0, 256, 128, 64); MBUS_CONF( DI, true, HIGH, 0, 1024, 256, 64); /* * The port names are probably wrong, but no correct sources * are available. */ MBUS_CONF( DE, true, HIGH, 0, 128, 48, 0); MBUS_CONF( DE_CFD, true, HIGH, 0, 384, 256, 0); MBUS_CONF(UNKNOWN1, true, HIGHEST, 0, 512, 384, 256); MBUS_CONF(UNKNOWN2, true, HIGHEST, 2, 8192, 6144, 1024); MBUS_CONF(UNKNOWN3, true, HIGH, 0, 1280, 144, 64); } static void mctl_set_master_priority(uint16_t socid) { switch (socid) { case SOCID_H3: mctl_set_master_priority_h3(); return; case SOCID_A64: mctl_set_master_priority_a64(); return; case SOCID_H5: mctl_set_master_priority_h5(); return; case SOCID_R40: mctl_set_master_priority_r40(); return; } } static u32 bin_to_mgray(int val) { static const u8 lookup_table[32] = { 0x00, 0x01, 0x02, 0x03, 0x06, 0x07, 0x04, 0x05, 0x0c, 0x0d, 0x0e, 0x0f, 0x0a, 0x0b, 0x08, 0x09, 0x18, 0x19, 0x1a, 0x1b, 0x1e, 0x1f, 0x1c, 0x1d, 0x14, 0x15, 0x16, 0x17, 0x12, 0x13, 0x10, 0x11, }; return lookup_table[clamp(val, 0, 31)]; } static int mgray_to_bin(u32 val) { static const u8 lookup_table[32] = { 0x00, 0x01, 0x02, 0x03, 0x06, 0x07, 0x04, 0x05, 0x0e, 0x0f, 0x0c, 0x0d, 0x08, 0x09, 0x0a, 0x0b, 0x1e, 0x1f, 0x1c, 0x1d, 0x18, 0x19, 0x1a, 0x1b, 0x10, 0x11, 0x12, 0x13, 0x16, 0x17, 0x14, 0x15, }; return lookup_table[val & 0x1f]; } static void mctl_h3_zq_calibration_quirk(struct dram_para *para) { struct sunxi_mctl_ctl_reg * const mctl_ctl = (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE; int zq_count; #if defined CONFIG_SUNXI_DRAM_DW_16BIT zq_count = 4; #else zq_count = 6; #endif if ((readl(SUNXI_SRAMC_BASE + 0x24) & 0xff) == 0 && (readl(SUNXI_SRAMC_BASE + 0xf0) & 0x1) == 0) { u32 reg_val; clrsetbits_le32(&mctl_ctl->zqcr, 0xffff, CONFIG_DRAM_ZQ & 0xffff); writel(PIR_CLRSR, &mctl_ctl->pir); mctl_phy_init(PIR_ZCAL); reg_val = readl(&mctl_ctl->zqdr[0]); reg_val &= (0x1f << 16) | (0x1f << 0); reg_val |= reg_val << 8; writel(reg_val, &mctl_ctl->zqdr[0]); reg_val = readl(&mctl_ctl->zqdr[1]); reg_val &= (0x1f << 16) | (0x1f << 0); reg_val |= reg_val << 8; writel(reg_val, &mctl_ctl->zqdr[1]); writel(reg_val, &mctl_ctl->zqdr[2]); } else { int i; u16 zq_val[6]; u8 val; writel(0x0a0a0a0a, &mctl_ctl->zqdr[2]); for (i = 0; i < zq_count; i++) { u8 zq = (CONFIG_DRAM_ZQ >> (i * 4)) & 0xf; writel((zq << 20) | (zq << 16) | (zq << 12) | (zq << 8) | (zq << 4) | (zq << 0), &mctl_ctl->zqcr); writel(PIR_CLRSR, &mctl_ctl->pir); mctl_phy_init(PIR_ZCAL); zq_val[i] = readl(&mctl_ctl->zqdr[0]) & 0xff; writel(REPEAT_BYTE(zq_val[i]), &mctl_ctl->zqdr[2]); writel(PIR_CLRSR, &mctl_ctl->pir); mctl_phy_init(PIR_ZCAL); val = readl(&mctl_ctl->zqdr[0]) >> 24; zq_val[i] |= bin_to_mgray(mgray_to_bin(val) - 1) << 8; } writel((zq_val[1] << 16) | zq_val[0], &mctl_ctl->zqdr[0]); writel((zq_val[3] << 16) | zq_val[2], &mctl_ctl->zqdr[1]); if (zq_count > 4) writel((zq_val[5] << 16) | zq_val[4], &mctl_ctl->zqdr[2]); } } static void mctl_set_cr(uint16_t socid, struct dram_para *para) { struct sunxi_mctl_com_reg * const mctl_com = (struct sunxi_mctl_com_reg *)SUNXI_DRAM_COM_BASE; writel(MCTL_CR_BL8 | MCTL_CR_INTERLEAVED | #if defined CONFIG_SUNXI_DRAM_DDR3 MCTL_CR_DDR3 | MCTL_CR_2T | #elif defined CONFIG_SUNXI_DRAM_DDR2 MCTL_CR_DDR2 | MCTL_CR_2T | #elif defined CONFIG_SUNXI_DRAM_LPDDR3 MCTL_CR_LPDDR3 | MCTL_CR_1T | #else #error Unsupported DRAM type! #endif (para->bank_bits == 3 ? MCTL_CR_EIGHT_BANKS : MCTL_CR_FOUR_BANKS) | MCTL_CR_BUS_FULL_WIDTH(para->bus_full_width) | (para->dual_rank ? MCTL_CR_DUAL_RANK : MCTL_CR_SINGLE_RANK) | MCTL_CR_PAGE_SIZE(para->page_size) | MCTL_CR_ROW_BITS(para->row_bits), &mctl_com->cr); if (socid == SOCID_R40) { if (para->dual_rank) panic("Dual rank memory not supported\n"); /* Mux pin to A15 address line for single rank memory. */ setbits_le32(&mctl_com->cr_r1, MCTL_CR_R1_MUX_A15); } } static void mctl_sys_init(uint16_t socid, struct dram_para *para) { struct sunxi_ccm_reg * const ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; struct sunxi_mctl_ctl_reg * const mctl_ctl = (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE; clrbits_le32(&ccm->mbus0_clk_cfg, MBUS_CLK_GATE); clrbits_le32(&ccm->mbus_reset, CCM_MBUS_RESET_RESET); clrbits_le32(&ccm->ahb_gate0, 1 << AHB_GATE_OFFSET_MCTL); clrbits_le32(&ccm->ahb_reset0_cfg, 1 << AHB_RESET_OFFSET_MCTL); clrbits_le32(&ccm->pll5_cfg, CCM_PLL5_CTRL_EN); if (socid == SOCID_A64 || socid == SOCID_R40) clrbits_le32(&ccm->pll11_cfg, CCM_PLL11_CTRL_EN); udelay(10); clrbits_le32(&ccm->dram_clk_cfg, CCM_DRAMCLK_CFG_RST); udelay(1000); if (socid == SOCID_A64 || socid == SOCID_R40) { clock_set_pll11(CONFIG_DRAM_CLK * 2 * 1000000, false); clrsetbits_le32(&ccm->dram_clk_cfg, CCM_DRAMCLK_CFG_DIV_MASK | CCM_DRAMCLK_CFG_SRC_MASK, CCM_DRAMCLK_CFG_DIV(1) | CCM_DRAMCLK_CFG_SRC_PLL11 | CCM_DRAMCLK_CFG_UPD); } else if (socid == SOCID_H3 || socid == SOCID_H5) { clock_set_pll5(CONFIG_DRAM_CLK * 2 * 1000000, false); clrsetbits_le32(&ccm->dram_clk_cfg, CCM_DRAMCLK_CFG_DIV_MASK | CCM_DRAMCLK_CFG_SRC_MASK, CCM_DRAMCLK_CFG_DIV(1) | CCM_DRAMCLK_CFG_SRC_PLL5 | CCM_DRAMCLK_CFG_UPD); } mctl_await_completion(&ccm->dram_clk_cfg, CCM_DRAMCLK_CFG_UPD, 0); setbits_le32(&ccm->ahb_reset0_cfg, 1 << AHB_RESET_OFFSET_MCTL); setbits_le32(&ccm->ahb_gate0, 1 << AHB_GATE_OFFSET_MCTL); setbits_le32(&ccm->mbus_reset, CCM_MBUS_RESET_RESET); setbits_le32(&ccm->mbus0_clk_cfg, MBUS_CLK_GATE); setbits_le32(&ccm->dram_clk_cfg, CCM_DRAMCLK_CFG_RST); udelay(10); writel(socid == SOCID_H5 ? 0x8000 : 0xc00e, &mctl_ctl->clken); udelay(500); } /* These are more guessed based on some Allwinner code. */ #define DX_GCR_ODT_DYNAMIC (0x0 << 4) #define DX_GCR_ODT_ALWAYS_ON (0x1 << 4) #define DX_GCR_ODT_OFF (0x2 << 4) static int mctl_channel_init(uint16_t socid, struct dram_para *para) { struct sunxi_mctl_com_reg * const mctl_com = (struct sunxi_mctl_com_reg *)SUNXI_DRAM_COM_BASE; struct sunxi_mctl_ctl_reg * const mctl_ctl = (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE; unsigned int i; mctl_set_cr(socid, para); mctl_set_timing_params(socid, para); mctl_set_master_priority(socid); /* setting VTC, default disable all VT */ clrbits_le32(&mctl_ctl->pgcr[0], (1 << 30) | 0x3f); if (socid == SOCID_H5) setbits_le32(&mctl_ctl->pgcr[1], (1 << 24) | (1 << 26)); else clrsetbits_le32(&mctl_ctl->pgcr[1], 1 << 24, 1 << 26); /* increase DFI_PHY_UPD clock */ writel(PROTECT_MAGIC, &mctl_com->protect); udelay(100); clrsetbits_le32(&mctl_ctl->upd2, 0xfff << 16, 0x50 << 16); writel(0x0, &mctl_com->protect); udelay(100); /* set dramc odt */ for (i = 0; i < 4; i++) { u32 clearmask = (0x3 << 4) | (0x1 << 1) | (0x3 << 2) | (0x3 << 12) | (0x3 << 14); u32 setmask = IS_ENABLED(CONFIG_DRAM_ODT_EN) ? DX_GCR_ODT_DYNAMIC : DX_GCR_ODT_OFF; if (socid == SOCID_H5) { clearmask |= 0x2 << 8; setmask |= 0x4 << 8; } clrsetbits_le32(&mctl_ctl->dx[i].gcr, clearmask, setmask); } /* AC PDR should always ON */ clrsetbits_le32(&mctl_ctl->aciocr, socid == SOCID_H5 ? (0x1 << 11) : 0, 0x1 << 1); /* set DQS auto gating PD mode */ setbits_le32(&mctl_ctl->pgcr[2], 0x3 << 6); if (socid == SOCID_H3) { /* dx ddr_clk & hdr_clk dynamic mode */ clrbits_le32(&mctl_ctl->pgcr[0], (0x3 << 14) | (0x3 << 12)); /* dphy & aphy phase select 270 degree */ clrsetbits_le32(&mctl_ctl->pgcr[2], (0x3 << 10) | (0x3 << 8), (0x1 << 10) | (0x2 << 8)); } else if (socid == SOCID_A64 || socid == SOCID_H5) { /* dphy & aphy phase select ? */ clrsetbits_le32(&mctl_ctl->pgcr[2], (0x3 << 10) | (0x3 << 8), (0x0 << 10) | (0x3 << 8)); } else if (socid == SOCID_R40) { /* dx ddr_clk & hdr_clk dynamic mode (tpr13[9] == 0) */ clrbits_le32(&mctl_ctl->pgcr[0], (0x3 << 14) | (0x3 << 12)); /* dphy & aphy phase select ? */ clrsetbits_le32(&mctl_ctl->pgcr[2], (0x3 << 10) | (0x3 << 8), (0x0 << 10) | (0x3 << 8)); } /* set half DQ */ if (!para->bus_full_width) { #if defined CONFIG_SUNXI_DRAM_DW_32BIT writel(0x0, &mctl_ctl->dx[2].gcr); writel(0x0, &mctl_ctl->dx[3].gcr); #elif defined CONFIG_SUNXI_DRAM_DW_16BIT writel(0x0, &mctl_ctl->dx[1].gcr); #else #error Unsupported DRAM bus width! #endif } /* data training configuration */ clrsetbits_le32(&mctl_ctl->dtcr, 0xf << 24, (para->dual_rank ? 0x3 : 0x1) << 24); mctl_set_bit_delays(para); udelay(50); if (socid == SOCID_H3) { mctl_h3_zq_calibration_quirk(para); mctl_phy_init(PIR_PLLINIT | PIR_DCAL | PIR_PHYRST | PIR_DRAMRST | PIR_DRAMINIT | PIR_QSGATE); } else if (socid == SOCID_A64 || socid == SOCID_H5) { clrsetbits_le32(&mctl_ctl->zqcr, 0xffffff, CONFIG_DRAM_ZQ); mctl_phy_init(PIR_ZCAL | PIR_PLLINIT | PIR_DCAL | PIR_PHYRST | PIR_DRAMRST | PIR_DRAMINIT | PIR_QSGATE); /* no PIR_QSGATE for H5 ???? */ } else if (socid == SOCID_R40) { clrsetbits_le32(&mctl_ctl->zqcr, 0xffffff, CONFIG_DRAM_ZQ); mctl_phy_init(PIR_ZCAL | PIR_PLLINIT | PIR_DCAL | PIR_PHYRST | PIR_DRAMRST | PIR_DRAMINIT); } /* detect ranks and bus width */ if (readl(&mctl_ctl->pgsr[0]) & (0xfe << 20)) { /* only one rank */ if (((readl(&mctl_ctl->dx[0].gsr[0]) >> 24) & 0x2) #if defined CONFIG_SUNXI_DRAM_DW_32BIT || ((readl(&mctl_ctl->dx[1].gsr[0]) >> 24) & 0x2) #endif ) { clrsetbits_le32(&mctl_ctl->dtcr, 0xf << 24, 0x1 << 24); para->dual_rank = 0; } /* only half DQ width */ #if defined CONFIG_SUNXI_DRAM_DW_32BIT if (((readl(&mctl_ctl->dx[2].gsr[0]) >> 24) & 0x1) || ((readl(&mctl_ctl->dx[3].gsr[0]) >> 24) & 0x1)) { writel(0x0, &mctl_ctl->dx[2].gcr); writel(0x0, &mctl_ctl->dx[3].gcr); para->bus_full_width = 0; } #elif defined CONFIG_SUNXI_DRAM_DW_16BIT if ((readl(&mctl_ctl->dx[1].gsr[0]) >> 24) & 0x1) { writel(0x0, &mctl_ctl->dx[1].gcr); para->bus_full_width = 0; } #endif mctl_set_cr(socid, para); udelay(20); /* re-train */ mctl_phy_init(PIR_QSGATE); if (readl(&mctl_ctl->pgsr[0]) & (0xfe << 20)) return 1; } /* check the dramc status */ mctl_await_completion(&mctl_ctl->statr, 0x1, 0x1); /* liuke added for refresh debug */ setbits_le32(&mctl_ctl->rfshctl0, 0x1 << 31); udelay(10); clrbits_le32(&mctl_ctl->rfshctl0, 0x1 << 31); udelay(10); /* set PGCR3, CKE polarity */ if (socid == SOCID_H3) writel(0x00aa0060, &mctl_ctl->pgcr[3]); else if (socid == SOCID_A64 || socid == SOCID_H5 || socid == SOCID_R40) writel(0xc0aa0060, &mctl_ctl->pgcr[3]); /* power down zq calibration module for power save */ setbits_le32(&mctl_ctl->zqcr, ZQCR_PWRDOWN); /* enable master access */ writel(0xffffffff, &mctl_com->maer); return 0; } static void mctl_auto_detect_dram_size(uint16_t socid, struct dram_para *para) { /* detect row address bits */ para->page_size = 512; para->row_bits = 16; para->bank_bits = 2; mctl_set_cr(socid, para); for (para->row_bits = 11; para->row_bits < 16; para->row_bits++) if (mctl_mem_matches((1 << (para->row_bits + para->bank_bits)) * para->page_size)) break; /* detect bank address bits */ para->bank_bits = 3; mctl_set_cr(socid, para); for (para->bank_bits = 2; para->bank_bits < 3; para->bank_bits++) if (mctl_mem_matches((1 << para->bank_bits) * para->page_size)) break; /* detect page size */ para->page_size = 8192; mctl_set_cr(socid, para); for (para->page_size = 512; para->page_size < 8192; para->page_size *= 2) if (mctl_mem_matches(para->page_size)) break; } /* * The actual values used here are taken from Allwinner provided boot0 * binaries, though they are probably board specific, so would likely benefit * from invidual tuning for each board. Apparently a lot of boards copy from * some Allwinner reference design, so we go with those generic values for now * in the hope that they are reasonable for most (all?) boards. */ #define SUN8I_H3_DX_READ_DELAYS \ {{ 18, 18, 18, 18, 18, 18, 18, 18, 18, 0, 0 }, \ { 14, 14, 14, 14, 14, 14, 14, 14, 14, 0, 0 }, \ { 18, 18, 18, 18, 18, 18, 18, 18, 18, 0, 0 }, \ { 14, 14, 14, 14, 14, 14, 14, 14, 14, 0, 0 }} #define SUN8I_H3_DX_WRITE_DELAYS \ {{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 10, 10 }, \ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 10, 10 }, \ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 10, 10 }, \ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 6, 6 }} #define SUN8I_H3_AC_DELAYS \ { 0, 0, 0, 0, 0, 0, 0, 0, \ 0, 0, 0, 0, 0, 0, 0, 0, \ 0, 0, 0, 0, 0, 0, 0, 0, \ 0, 0, 0, 0, 0, 0, 0 } #define SUN8I_R40_DX_READ_DELAYS \ {{ 14, 14, 14, 14, 14, 14, 14, 14, 14, 0, 0 }, \ { 14, 14, 14, 14, 14, 14, 14, 14, 14, 0, 0 }, \ { 14, 14, 14, 14, 14, 14, 14, 14, 14, 0, 0 }, \ { 14, 14, 14, 14, 14, 14, 14, 14, 14, 0, 0 } } #define SUN8I_R40_DX_WRITE_DELAYS \ {{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 6, 0 }, \ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 6, 0 }, \ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 6, 0 }, \ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 6, 0 } } #define SUN8I_R40_AC_DELAYS \ { 0, 0, 3, 0, 0, 0, 0, 0, \ 0, 0, 0, 0, 0, 0, 0, 0, \ 0, 0, 0, 0, 0, 0, 0, 0, \ 0, 0, 0, 0, 0, 0, 0 } #define SUN50I_A64_DX_READ_DELAYS \ {{ 16, 16, 16, 16, 17, 16, 16, 17, 16, 1, 0 }, \ { 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 0 }, \ { 16, 17, 17, 16, 16, 16, 16, 16, 16, 0, 0 }, \ { 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 0 }} #define SUN50I_A64_DX_WRITE_DELAYS \ {{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 15, 15 }, \ { 0, 0, 0, 0, 1, 1, 1, 1, 0, 10, 10 }, \ { 1, 0, 1, 1, 1, 1, 1, 1, 0, 11, 11 }, \ { 1, 0, 0, 1, 1, 1, 1, 1, 0, 12, 12 }} #define SUN50I_A64_AC_DELAYS \ { 5, 5, 13, 10, 2, 5, 3, 3, \ 0, 3, 3, 3, 1, 0, 0, 0, \ 3, 4, 0, 3, 4, 1, 4, 0, \ 1, 1, 0, 1, 13, 5, 4 } #define SUN8I_H5_DX_READ_DELAYS \ {{ 14, 15, 17, 17, 17, 17, 17, 18, 17, 3, 3 }, \ { 21, 21, 12, 22, 21, 21, 21, 21, 21, 3, 3 }, \ { 16, 19, 19, 17, 22, 22, 21, 22, 19, 3, 3 }, \ { 21, 21, 22, 22, 20, 21, 19, 19, 19, 3, 3 } } #define SUN8I_H5_DX_WRITE_DELAYS \ {{ 1, 2, 3, 4, 3, 4, 4, 4, 6, 6, 6 }, \ { 6, 6, 6, 5, 5, 5, 5, 5, 6, 6, 6 }, \ { 0, 2, 4, 2, 6, 5, 5, 5, 6, 6, 6 }, \ { 3, 3, 3, 2, 2, 1, 1, 1, 4, 4, 4 } } #define SUN8I_H5_AC_DELAYS \ { 0, 0, 5, 5, 0, 0, 0, 0, \ 0, 0, 0, 0, 3, 3, 3, 3, \ 3, 3, 3, 3, 3, 3, 3, 3, \ 3, 3, 3, 3, 2, 0, 0 } unsigned long sunxi_dram_init(void) { struct sunxi_mctl_com_reg * const mctl_com = (struct sunxi_mctl_com_reg *)SUNXI_DRAM_COM_BASE; struct sunxi_mctl_ctl_reg * const mctl_ctl = (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE; struct dram_para para = { .dual_rank = 1, .bus_full_width = 1, .row_bits = 15, .bank_bits = 3, .page_size = 4096, #if defined(CONFIG_MACH_SUN8I_H3) .dx_read_delays = SUN8I_H3_DX_READ_DELAYS, .dx_write_delays = SUN8I_H3_DX_WRITE_DELAYS, .ac_delays = SUN8I_H3_AC_DELAYS, #elif defined(CONFIG_MACH_SUN8I_R40) .dx_read_delays = SUN8I_R40_DX_READ_DELAYS, .dx_write_delays = SUN8I_R40_DX_WRITE_DELAYS, .ac_delays = SUN8I_R40_AC_DELAYS, #elif defined(CONFIG_MACH_SUN50I) .dx_read_delays = SUN50I_A64_DX_READ_DELAYS, .dx_write_delays = SUN50I_A64_DX_WRITE_DELAYS, .ac_delays = SUN50I_A64_AC_DELAYS, #elif defined(CONFIG_MACH_SUN50I_H5) .dx_read_delays = SUN8I_H5_DX_READ_DELAYS, .dx_write_delays = SUN8I_H5_DX_WRITE_DELAYS, .ac_delays = SUN8I_H5_AC_DELAYS, #endif }; /* * Let the compiler optimize alternatives away by passing this value into * the static functions. This saves us #ifdefs, but still keeps the binary * small. */ #if defined(CONFIG_MACH_SUN8I_H3) uint16_t socid = SOCID_H3; #elif defined(CONFIG_MACH_SUN8I_R40) uint16_t socid = SOCID_R40; /* Currently we cannot support R40 with dual rank memory */ para.dual_rank = 0; #elif defined(CONFIG_MACH_SUN8I_V3S) /* TODO: set delays and mbus priority for V3s */ uint16_t socid = SOCID_H3; #elif defined(CONFIG_MACH_SUN50I) uint16_t socid = SOCID_A64; #elif defined(CONFIG_MACH_SUN50I_H5) uint16_t socid = SOCID_H5; #endif mctl_sys_init(socid, ¶); if (mctl_channel_init(socid, ¶)) return 0; if (para.dual_rank) writel(0x00000303, &mctl_ctl->odtmap); else writel(0x00000201, &mctl_ctl->odtmap); udelay(1); /* odt delay */ if (socid == SOCID_H3) writel(0x0c000400, &mctl_ctl->odtcfg); if (socid == SOCID_A64 || socid == SOCID_H5 || socid == SOCID_R40) { /* VTF enable (tpr13[8] == 1) */ setbits_le32(&mctl_ctl->vtfcr, (socid != SOCID_A64 ? 3 : 2) << 8); /* DQ hold disable (tpr13[26] == 1) */ clrbits_le32(&mctl_ctl->pgcr[2], (1 << 13)); } /* clear credit value */ setbits_le32(&mctl_com->cccr, 1 << 31); udelay(10); mctl_auto_detect_dram_size(socid, ¶); mctl_set_cr(socid, ¶); return (1UL << (para.row_bits + para.bank_bits)) * para.page_size * (para.dual_rank ? 2 : 1); }