--- /dev/null
+/*
+ * UniPhier DDR MultiPHY registers
+ *
+ * Copyright (C) 2015 Masahiro Yamada <yamada.masahiro@socionext.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef ARCH_DDRMPHY_REGS_H
+#define ARCH_DDRMPHY_REGS_H
+
+#include <linux/bitops.h>
+
+#define DMPHY_SHIFT 2
+
+#define DMPHY_RIDR (0x000 << DMPHY_SHIFT)
+#define DMPHY_PIR (0x001 << DMPHY_SHIFT)
+#define DMPHY_PIR_INIT BIT(0) /* Initialization Trigger */
+#define DMPHY_PIR_ZCAL BIT(1) /* Impedance Calibration */
+#define DMPHY_PIR_PLLINIT BIT(4) /* PLL Initialization */
+#define DMPHY_PIR_DCAL BIT(5) /* DDL Calibration */
+#define DMPHY_PIR_PHYRST BIT(6) /* PHY Reset */
+#define DMPHY_PIR_DRAMRST BIT(7) /* DRAM Reset */
+#define DMPHY_PIR_DRAMINIT BIT(8) /* DRAM Initialization */
+#define DMPHY_PIR_WL BIT(9) /* Write Leveling */
+#define DMPHY_PIR_QSGATE BIT(10) /* Read DQS Gate Training */
+#define DMPHY_PIR_WLADJ BIT(11) /* Write Leveling Adjust */
+#define DMPHY_PIR_RDDSKW BIT(12) /* Read Data Bit Deskew */
+#define DMPHY_PIR_WRDSKW BIT(13) /* Write Data Bit Deskew */
+#define DMPHY_PIR_RDEYE BIT(14) /* Read Data Eye Training */
+#define DMPHY_PIR_WREYE BIT(15) /* Write Data Eye Training */
+#define DMPHY_PIR_ZCALBYP BIT(30) /* Impedance Calib Bypass */
+#define DMPHY_PIR_INITBYP BIT(31) /* Initialization Bypass */
+#define DMPHY_PGCR0 (0x002 << DMPHY_SHIFT)
+#define DMPHY_PGCR0_PHYFRST BIT(26) /* PHY FIFO Reset */
+#define DMPHY_PGCR1 (0x003 << DMPHY_SHIFT)
+#define DMPHY_PGCR1_INHVT BIT(26) /* VT Calculation Inhibit */
+#define DMPHY_PGCR2 (0x004 << DMPHY_SHIFT)
+#define DMPHY_PGCR2_DUALCHN BIT(28) /* Dual Channel Configuration*/
+#define DMPHY_PGCR2_ACPDDC BIT(29) /* AC Power-Down with Dual Ch*/
+#define DMPHY_PGCR3 (0x005 << DMPHY_SHIFT)
+#define DMPHY_PGSR0 (0x006 << DMPHY_SHIFT)
+#define DMPHY_PGSR0_IDONE BIT(0) /* Initialization Done */
+#define DMPHY_PGSR0_PLDONE BIT(1) /* PLL Lock Done */
+#define DMPHY_PGSR0_DCDONE BIT(2) /* DDL Calibration Done */
+#define DMPHY_PGSR0_ZCDONE BIT(3) /* Impedance Calibration Done */
+#define DMPHY_PGSR0_DIDONE BIT(4) /* DRAM Initialization Done */
+#define DMPHY_PGSR0_WLDONE BIT(5) /* Write Leveling Done */
+#define DMPHY_PGSR0_QSGDONE BIT(6) /* DQS Gate Training Done */
+#define DMPHY_PGSR0_WLADONE BIT(7) /* Write Leveling Adjust Done */
+#define DMPHY_PGSR0_RDDONE BIT(8) /* Read Bit Deskew Done */
+#define DMPHY_PGSR0_WDDONE BIT(9) /* Write Bit Deskew Done */
+#define DMPHY_PGSR0_REDONE BIT(10) /* Read Eye Training Done */
+#define DMPHY_PGSR0_WEDONE BIT(11) /* Write Eye Training Done */
+#define DMPHY_PGSR0_ZCERR BIT(20) /* Impedance Calib Error */
+#define DMPHY_PGSR0_WLERR BIT(21) /* Write Leveling Error */
+#define DMPHY_PGSR0_QSGERR BIT(22) /* DQS Gate Training Error */
+#define DMPHY_PGSR0_WLAERR BIT(23) /* Write Leveling Adj Error */
+#define DMPHY_PGSR0_RDERR BIT(24) /* Read Bit Deskew Error */
+#define DMPHY_PGSR0_WDERR BIT(25) /* Write Bit Deskew Error */
+#define DMPHY_PGSR0_REERR BIT(26) /* Read Eye Training Error */
+#define DMPHY_PGSR0_WEERR BIT(27) /* Write Eye Training Error */
+#define DMPHY_PGSR1 (0x007 << DMPHY_SHIFT)
+#define DMPHY_PGSR1_VTSTOP BIT(30) /* VT Stop */
+#define DMPHY_PLLCR (0x008 << DMPHY_SHIFT)
+#define DMPHY_PTR0 (0x009 << DMPHY_SHIFT)
+#define DMPHY_PTR1 (0x00A << DMPHY_SHIFT)
+#define DMPHY_PTR2 (0x00B << DMPHY_SHIFT)
+#define DMPHY_PTR3 (0x00C << DMPHY_SHIFT)
+#define DMPHY_PTR4 (0x00D << DMPHY_SHIFT)
+#define DMPHY_ACMDLR (0x00E << DMPHY_SHIFT)
+#define DMPHY_ACLCDLR (0x00F << DMPHY_SHIFT)
+#define DMPHY_ACBDLR0 (0x010 << DMPHY_SHIFT)
+#define DMPHY_ACBDLR1 (0x011 << DMPHY_SHIFT)
+#define DMPHY_ACBDLR2 (0x012 << DMPHY_SHIFT)
+#define DMPHY_ACBDLR3 (0x013 << DMPHY_SHIFT)
+#define DMPHY_ACBDLR4 (0x014 << DMPHY_SHIFT)
+#define DMPHY_ACBDLR5 (0x015 << DMPHY_SHIFT)
+#define DMPHY_ACBDLR6 (0x016 << DMPHY_SHIFT)
+#define DMPHY_ACBDLR7 (0x017 << DMPHY_SHIFT)
+#define DMPHY_ACBDLR8 (0x018 << DMPHY_SHIFT)
+#define DMPHY_ACBDLR9 (0x019 << DMPHY_SHIFT)
+#define DMPHY_ACIOCR0 (0x01A << DMPHY_SHIFT)
+#define DMPHY_ACIOCR1 (0x01B << DMPHY_SHIFT)
+#define DMPHY_ACIOCR2 (0x01C << DMPHY_SHIFT)
+#define DMPHY_ACIOCR3 (0x01D << DMPHY_SHIFT)
+#define DMPHY_ACIOCR4 (0x01E << DMPHY_SHIFT)
+#define DMPHY_ACIOCR5 (0x01F << DMPHY_SHIFT)
+#define DMPHY_DXCCR (0x020 << DMPHY_SHIFT)
+#define DMPHY_DSGCR (0x021 << DMPHY_SHIFT)
+#define DMPHY_DCR (0x022 << DMPHY_SHIFT)
+#define DMPHY_DTPR0 (0x023 << DMPHY_SHIFT)
+#define DMPHY_DTPR1 (0x024 << DMPHY_SHIFT)
+#define DMPHY_DTPR2 (0x025 << DMPHY_SHIFT)
+#define DMPHY_DTPR3 (0x026 << DMPHY_SHIFT)
+#define DMPHY_MR0 (0x027 << DMPHY_SHIFT)
+#define DMPHY_MR1 (0x028 << DMPHY_SHIFT)
+#define DMPHY_MR2 (0x029 << DMPHY_SHIFT)
+#define DMPHY_MR3 (0x02A << DMPHY_SHIFT)
+#define DMPHY_ODTCR (0x02B << DMPHY_SHIFT)
+#define DMPHY_DTCR (0x02C << DMPHY_SHIFT)
+#define DMPHY_DTCR_RANKEN_SHIFT 24 /* Rank Enable */
+#define DMPHY_DTCR_RANKEN_MASK (0xf << (DMPHY_DTCR_RANKEN_SHIFT))
+#define DMPHY_DTAR0 (0x02D << DMPHY_SHIFT)
+#define DMPHY_DTAR1 (0x02E << DMPHY_SHIFT)
+#define DMPHY_DTAR2 (0x02F << DMPHY_SHIFT)
+#define DMPHY_DTAR3 (0x030 << DMPHY_SHIFT)
+#define DMPHY_DTDR0 (0x031 << DMPHY_SHIFT)
+#define DMPHY_DTDR1 (0x032 << DMPHY_SHIFT)
+#define DMPHY_DTEDR0 (0x033 << DMPHY_SHIFT)
+#define DMPHY_DTEDR1 (0x034 << DMPHY_SHIFT)
+#define DMPHY_ZQCR (0x090 << DMPHY_SHIFT)
+#define DMPHY_ZQCR_AVGEN BIT(16) /* Average Algorithm */
+#define DMPHY_ZQCR_FORCE_ZCAL_VT_UPDATE BIT(27) /* force VT update */
+/* ZQ */
+#define DMPHY_ZQ_BASE (0x091 << DMPHY_SHIFT)
+#define DMPHY_ZQ_STRIDE (0x004 << DMPHY_SHIFT)
+#define DMPHY_ZQ_PR (0x000 << DMPHY_SHIFT)
+#define DMPHY_ZQ_DR (0x001 << DMPHY_SHIFT)
+#define DMPHY_ZQ_SR (0x002 << DMPHY_SHIFT)
+/* DATX8 */
+#define DMPHY_DX_BASE (0x0A0 << DMPHY_SHIFT)
+#define DMPHY_DX_STRIDE (0x020 << DMPHY_SHIFT)
+#define DMPHY_DX_GCR0 (0x000 << DMPHY_SHIFT)
+#define DMPHY_DX_GCR0_WLRKEN_SHIFT 26 /* Write Level Rank Enable */
+#define DMPHY_DX_GCR0_WLRKEN_MASK (0xf << (DMPHY_DX_GCR0_WLRKEN_SHIFT))
+#define DMPHY_DX_GCR1 (0x001 << DMPHY_SHIFT)
+#define DMPHY_DX_GCR2 (0x002 << DMPHY_SHIFT)
+#define DMPHY_DX_GCR3 (0x003 << DMPHY_SHIFT)
+#define DMPHY_DX_GSR0 (0x004 << DMPHY_SHIFT)
+#define DMPHY_DX_GSR1 (0x005 << DMPHY_SHIFT)
+#define DMPHY_DX_GSR2 (0x006 << DMPHY_SHIFT)
+#define DMPHY_DX_BDLR0 (0x007 << DMPHY_SHIFT)
+#define DMPHY_DX_BDLR1 (0x008 << DMPHY_SHIFT)
+#define DMPHY_DX_BDLR2 (0x009 << DMPHY_SHIFT)
+#define DMPHY_DX_BDLR3 (0x00A << DMPHY_SHIFT)
+#define DMPHY_DX_BDLR4 (0x00B << DMPHY_SHIFT)
+#define DMPHY_DX_BDLR5 (0x00C << DMPHY_SHIFT)
+#define DMPHY_DX_BDLR6 (0x00D << DMPHY_SHIFT)
+#define DMPHY_DX_LCDLR0 (0x00E << DMPHY_SHIFT)
+#define DMPHY_DX_LCDLR1 (0x00F << DMPHY_SHIFT)
+#define DMPHY_DX_LCDLR2 (0x010 << DMPHY_SHIFT)
+#define DMPHY_DX_MDLR (0x011 << DMPHY_SHIFT)
+#define DMPHY_DX_GTR (0x012 << DMPHY_SHIFT)
+
+#endif /* ARCH_DDRMPHY_REGS_H */
--- /dev/null
+/*
+ * Copyright (C) 2015 Masahiro Yamada <yamada.masahiro@socionext.com>
+ *
+ * based on commit 21b6e480f92ccc38fe0502e3116411d6509d3bf2 of Diag by:
+ * Copyright (C) 2015 Socionext Inc.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/sizes.h>
+#include <asm/processor.h>
+
+#include "../init.h"
+#include "../soc-info.h"
+#include "ddrmphy-regs.h"
+
+/* UM registers */
+#define UMC_MBUS0 0x00080004
+#define UMC_MBUS1 0x00081004
+#define UMC_MBUS2 0x00082004
+#define UMC_MBUS3 0x00083004
+
+/* UD registers */
+#define UMC_BITPERPIXELMODE_D0 0x010
+#define UMC_PAIR1DOFF_D0 0x054
+
+/* DC registers */
+#define UMC_INITSET 0x014
+#define UMC_INITSTAT 0x018
+#define UMC_CMDCTLA 0x000
+#define UMC_CMDCTLB 0x004
+#define UMC_SPCCTLA 0x030
+#define UMC_SPCCTLB 0x034
+#define UMC_SPCSETB 0x03c
+#define UMC_SPCSETB_AREFMD_MASK (0x3) /* Auto Refresh Mode */
+#define UMC_SPCSETB_AREFMD_ARB (0x0) /* control by arbitor */
+#define UMC_SPCSETB_AREFMD_CONT (0x1) /* control by DRAMCONT */
+#define UMC_SPCSETB_AREFMD_REG (0x2) /* control by register */
+#define UMC_ACSSETA 0x060
+#define UMC_FLOWCTLA 0x400
+#define UMC_FLOWCTLB 0x404
+#define UMC_FLOWCTLC 0x408
+#define UMC_FLOWCTLG 0x508
+#define UMC_FLOWCTLOB0 0x520
+#define UMC_FLOWCTLOB1 0x524
+#define UMC_RDATACTL_D0 0x600
+#define UMC_RDATACTL_RADLTY_SHIFT 4
+#define UMC_RDATACTL_RADLTY_MASK (0xf << (UMC_RDATACTL_RADLTY_SHIFT))
+#define UMC_RDATACTL_RAD2LTY_SHIFT 8
+#define UMC_RDATACTL_RAD2LTY_MASK (0xf << (UMC_RDATACTL_RAD2LTY_SHIFT))
+#define UMC_WDATACTL_D0 0x604
+#define UMC_RDATACTL_D1 0x608
+#define UMC_WDATACTL_D1 0x60c
+#define UMC_DATASET 0x610
+#define UMC_RESPCTL 0x624
+#define UMC_DCCGCTL 0x720
+#define UMC_ERRMASKA 0x958
+#define UMC_ERRMASKB 0x95c
+#define UMC_BSICMAPSET 0x988
+#define UMC_DIOCTLA 0xc00
+#define UMC_DIOCTLA_CTL_NRST BIT(8) /* ctl_rst_n */
+#define UMC_DIOCTLA_CFG_NRST BIT(0) /* cfg_rst_n */
+#define UMC_DFICUPDCTLA 0xc20
+
+enum dram_freq {
+ FREQ_1866M,
+ FREQ_2133M,
+ FREQ_NR,
+};
+
+enum dram_size {
+ SIZE_0,
+ SIZE_512M,
+ SIZE_1G,
+ SIZE_NR,
+};
+
+static u32 ddrphy_pgcr2[FREQ_NR] = {0x00FC7E5D, 0x00FC90AB};
+static u32 ddrphy_ptr0[FREQ_NR] = {0x0EA09205, 0x10C0A6C6};
+static u32 ddrphy_ptr1[FREQ_NR] = {0x0DAC041B, 0x0FA104B1};
+static u32 ddrphy_ptr3[FREQ_NR] = {0x15171e45, 0x18182357};
+static u32 ddrphy_ptr4[FREQ_NR] = {0x0e9ad8e9, 0x10b34157};
+static u32 ddrphy_dtpr0[FREQ_NR] = {0x35a00d88, 0x39e40e88};
+static u32 ddrphy_dtpr1[FREQ_NR] = {0x2288cc2c, 0x228a04d0};
+static u32 ddrphy_dtpr2[FREQ_NR] = {0x50005e00, 0x50006a00};
+static u32 ddrphy_dtpr3[FREQ_NR] = {0x0010cb49, 0x0010ec89};
+static u32 ddrphy_mr0[FREQ_NR] = {0x00000115, 0x00000125};
+static u32 ddrphy_mr2[FREQ_NR] = {0x000002a0, 0x000002a8};
+
+static u32 umc_cmdctla[FREQ_NR] = {0x66DD131D, 0x77EE1722};
+/*
+ * The ch2 is a different generation UMC core.
+ * The register spec is different, unfortunately.
+ */
+static u32 umc_cmdctlb_ch01[FREQ_NR] = {0x13E87C44, 0x18F88C44};
+static u32 umc_cmdctlb_ch2[FREQ_NR] = {0x19E8DC44, 0x1EF8EC44};
+static u32 umc_spcctla[FREQ_NR][SIZE_NR] = {
+ {0x00000000, 0x004A071D, 0x0078071D},
+ {0x00000000, 0x0055081E, 0x0089081E},
+};
+
+static u32 umc_spcctlb[] = {0x00FF000A, 0x00FF000B};
+/* The ch2 is different for some reason only hardware guys know... */
+static u32 umc_flowctla_ch01[] = {0x0800001E, 0x08000022};
+static u32 umc_flowctla_ch2[] = {0x0800001E, 0x0800001E};
+
+/* DDR multiPHY */
+static inline int ddrphy_get_rank(int dx)
+{
+ return dx / 2;
+}
+
+static void ddrphy_fifo_reset(void __iomem *phy_base)
+{
+ u32 tmp;
+
+ tmp = readl(phy_base + DMPHY_PGCR0);
+ tmp &= ~DMPHY_PGCR0_PHYFRST;
+ writel(tmp, phy_base + DMPHY_PGCR0);
+
+ udelay(1);
+
+ tmp |= DMPHY_PGCR0_PHYFRST;
+ writel(tmp, phy_base + DMPHY_PGCR0);
+
+ udelay(1);
+}
+
+static void ddrphy_vt_ctrl(void __iomem *phy_base, int enable)
+{
+ u32 tmp;
+
+ tmp = readl(phy_base + DMPHY_PGCR1);
+
+ if (enable)
+ tmp &= ~DMPHY_PGCR1_INHVT;
+ else
+ tmp |= DMPHY_PGCR1_INHVT;
+
+ writel(tmp, phy_base + DMPHY_PGCR1);
+
+ if (!enable) {
+ while (!(readl(phy_base + DMPHY_PGSR1) & DMPHY_PGSR1_VTSTOP))
+ cpu_relax();
+ }
+}
+
+static void ddrphy_dqs_delay_fixup(void __iomem *phy_base, int nr_dx, int step)
+{
+ int dx;
+ u32 lcdlr1, rdqsd;
+ void __iomem *dx_base = phy_base + DMPHY_DX_BASE;
+
+ ddrphy_vt_ctrl(phy_base, 0);
+
+ for (dx = 0; dx < nr_dx; dx++) {
+ lcdlr1 = readl(dx_base + DMPHY_DX_LCDLR1);
+ rdqsd = (lcdlr1 >> 8) & 0xff;
+ rdqsd = clamp(rdqsd + step, 0U, 0xffU);
+ lcdlr1 = (lcdlr1 & ~(0xff << 8)) | (rdqsd << 8);
+ writel(lcdlr1, dx_base + DMPHY_DX_LCDLR1);
+ readl(dx_base + DMPHY_DX_LCDLR1); /* relax */
+ dx_base += DMPHY_DX_STRIDE;
+ }
+
+ ddrphy_vt_ctrl(phy_base, 1);
+}
+
+static int ddrphy_get_system_latency(void __iomem *phy_base, int width)
+{
+ void __iomem *dx_base = phy_base + DMPHY_DX_BASE;
+ const int nr_dx = width / 8;
+ int dx, rank;
+ u32 gtr;
+ int dgsl, dgsl_min = INT_MAX, dgsl_max = 0;
+
+ for (dx = 0; dx < nr_dx; dx++) {
+ gtr = readl(dx_base + DMPHY_DX_GTR);
+ for (rank = 0; rank < 4; rank++) {
+ dgsl = gtr & 0x7;
+ /* if dgsl is zero, this rank was not trained. skip. */
+ if (dgsl) {
+ dgsl_min = min(dgsl_min, dgsl);
+ dgsl_max = max(dgsl_max, dgsl);
+ }
+ gtr >>= 3;
+ }
+ dx_base += DMPHY_DX_STRIDE;
+ }
+
+ if (dgsl_min != dgsl_max)
+ printf("DQS Gateing System Latencies are not all leveled.\n");
+
+ return dgsl_max;
+}
+
+static void ddrphy_init(void __iomem *phy_base, enum dram_freq freq, int width)
+{
+ u32 tmp;
+ void __iomem *zq_base, *dx_base;
+ int zq, dx;
+ int nr_dx;
+
+ nr_dx = width / 8;
+
+ writel(DMPHY_PIR_ZCALBYP, phy_base + DMPHY_PIR);
+ /*
+ * Disable RGLVT bit (Read DQS Gating LCDL Delay VT Compensation)
+ * to avoid read error issue.
+ */
+ writel(0x07d81e37, phy_base + DMPHY_PGCR0);
+ writel(0x0200c4e0, phy_base + DMPHY_PGCR1);
+
+ tmp = ddrphy_pgcr2[freq];
+ if (width >= 32)
+ tmp |= DMPHY_PGCR2_DUALCHN | DMPHY_PGCR2_ACPDDC;
+ writel(tmp, phy_base + DMPHY_PGCR2);
+
+ writel(ddrphy_ptr0[freq], phy_base + DMPHY_PTR0);
+ writel(ddrphy_ptr1[freq], phy_base + DMPHY_PTR1);
+ writel(0x00083def, phy_base + DMPHY_PTR2);
+ writel(ddrphy_ptr3[freq], phy_base + DMPHY_PTR3);
+ writel(ddrphy_ptr4[freq], phy_base + DMPHY_PTR4);
+
+ writel(0x55555555, phy_base + DMPHY_ACIOCR1);
+ writel(0x00000000, phy_base + DMPHY_ACIOCR2);
+ writel(0x55555555, phy_base + DMPHY_ACIOCR3);
+ writel(0x00000000, phy_base + DMPHY_ACIOCR4);
+ writel(0x00000055, phy_base + DMPHY_ACIOCR5);
+ writel(0x00181aa4, phy_base + DMPHY_DXCCR);
+
+ writel(0x0024641e, phy_base + DMPHY_DSGCR);
+ writel(0x0000040b, phy_base + DMPHY_DCR);
+ writel(ddrphy_dtpr0[freq], phy_base + DMPHY_DTPR0);
+ writel(ddrphy_dtpr1[freq], phy_base + DMPHY_DTPR1);
+ writel(ddrphy_dtpr2[freq], phy_base + DMPHY_DTPR2);
+ writel(ddrphy_dtpr3[freq], phy_base + DMPHY_DTPR3);
+ writel(ddrphy_mr0[freq], phy_base + DMPHY_MR0);
+ writel(0x00000006, phy_base + DMPHY_MR1);
+ writel(ddrphy_mr2[freq], phy_base + DMPHY_MR2);
+ writel(0x00000000, phy_base + DMPHY_MR3);
+
+ tmp = 0;
+ for (dx = 0; dx < nr_dx; dx++)
+ tmp |= BIT(DMPHY_DTCR_RANKEN_SHIFT + ddrphy_get_rank(dx));
+ writel(0x90003087 | tmp, phy_base + DMPHY_DTCR);
+
+ writel(0x00000000, phy_base + DMPHY_DTAR0);
+ writel(0x00000008, phy_base + DMPHY_DTAR1);
+ writel(0x00000010, phy_base + DMPHY_DTAR2);
+ writel(0x00000018, phy_base + DMPHY_DTAR3);
+ writel(0xdd22ee11, phy_base + DMPHY_DTDR0);
+ writel(0x7788bb44, phy_base + DMPHY_DTDR1);
+
+ /* impedance control settings */
+ writel(0x04048900, phy_base + DMPHY_ZQCR);
+
+ zq_base = phy_base + DMPHY_ZQ_BASE;
+ for (zq = 0; zq < 4; zq++) {
+ /*
+ * board-dependent
+ * PXS2: CH0ZQ0=0x5B, CH1ZQ0=0x5B, CH2ZQ0=0x59, others=0x5D
+ */
+ writel(0x0007BB5D, zq_base + DMPHY_ZQ_PR);
+ zq_base += DMPHY_ZQ_STRIDE;
+ }
+
+ /* DATX8 settings */
+ dx_base = phy_base + DMPHY_DX_BASE;
+ for (dx = 0; dx < 4; dx++) {
+ tmp = readl(dx_base + DMPHY_DX_GCR0);
+ tmp &= ~DMPHY_DX_GCR0_WLRKEN_MASK;
+ tmp |= BIT(DMPHY_DX_GCR0_WLRKEN_SHIFT + ddrphy_get_rank(dx)) &
+ DMPHY_DX_GCR0_WLRKEN_MASK;
+ writel(tmp, dx_base + DMPHY_DX_GCR0);
+
+ writel(0x00000000, dx_base + DMPHY_DX_GCR1);
+ writel(0x00000000, dx_base + DMPHY_DX_GCR2);
+ writel(0x00000000, dx_base + DMPHY_DX_GCR3);
+ dx_base += DMPHY_DX_STRIDE;
+ }
+
+ while (!(readl(phy_base + DMPHY_PGSR0) & DMPHY_PGSR0_IDONE))
+ cpu_relax();
+
+ ddrphy_dqs_delay_fixup(phy_base, nr_dx, -4);
+}
+
+struct ddrphy_init_sequence {
+ char *description;
+ u32 init_flag;
+ u32 done_flag;
+ u32 err_flag;
+};
+
+static const struct ddrphy_init_sequence impedance_calibration_sequence[] = {
+ {
+ "Impedance Calibration",
+ DMPHY_PIR_ZCAL,
+ DMPHY_PGSR0_ZCDONE,
+ DMPHY_PGSR0_ZCERR,
+ },
+ { /* sentinel */ }
+};
+
+static const struct ddrphy_init_sequence dram_init_sequence[] = {
+ {
+ "DRAM Initialization",
+ DMPHY_PIR_DRAMRST | DMPHY_PIR_DRAMINIT,
+ DMPHY_PGSR0_DIDONE,
+ 0,
+ },
+ { /* sentinel */ }
+};
+
+static const struct ddrphy_init_sequence training_sequence[] = {
+ {
+ "Write Leveling",
+ DMPHY_PIR_WL,
+ DMPHY_PGSR0_WLDONE,
+ DMPHY_PGSR0_WLERR,
+ },
+ {
+ "Read DQS Gate Training",
+ DMPHY_PIR_QSGATE,
+ DMPHY_PGSR0_QSGDONE,
+ DMPHY_PGSR0_QSGERR,
+ },
+ {
+ "Write Leveling Adjustment",
+ DMPHY_PIR_WLADJ,
+ DMPHY_PGSR0_WLADONE,
+ DMPHY_PGSR0_WLAERR,
+ },
+ {
+ "Read Bit Deskew",
+ DMPHY_PIR_RDDSKW,
+ DMPHY_PGSR0_RDDONE,
+ DMPHY_PGSR0_RDERR,
+ },
+ {
+ "Write Bit Deskew",
+ DMPHY_PIR_WRDSKW,
+ DMPHY_PGSR0_WDDONE,
+ DMPHY_PGSR0_WDERR,
+ },
+ {
+ "Read Eye Training",
+ DMPHY_PIR_RDEYE,
+ DMPHY_PGSR0_REDONE,
+ DMPHY_PGSR0_REERR,
+ },
+ {
+ "Write Eye Training",
+ DMPHY_PIR_WREYE,
+ DMPHY_PGSR0_WEDONE,
+ DMPHY_PGSR0_WEERR,
+ },
+ { /* sentinel */ }
+};
+
+static int __ddrphy_training(void __iomem *phy_base,
+ const struct ddrphy_init_sequence *seq)
+{
+ const struct ddrphy_init_sequence *s;
+ u32 pgsr0;
+ u32 init_flag = DMPHY_PIR_INIT;
+ u32 done_flag = DMPHY_PGSR0_IDONE;
+ int timeout = 50000; /* 50 msec is long enough */
+#ifdef DISPLAY_ELAPSED_TIME
+ ulong start = get_timer(0);
+#endif
+
+ for (s = seq; s->description; s++) {
+ init_flag |= s->init_flag;
+ done_flag |= s->done_flag;
+ }
+
+ writel(init_flag, phy_base + DMPHY_PIR);
+
+ do {
+ if (--timeout < 0) {
+ printf("%s: error: timeout during DDR training\n",
+ __func__);
+ return -ETIMEDOUT;
+ }
+ udelay(1);
+ pgsr0 = readl(phy_base + DMPHY_PGSR0);
+ } while ((pgsr0 & done_flag) != done_flag);
+
+ for (s = seq; s->description; s++) {
+ if (pgsr0 & s->err_flag) {
+ printf("%s: error: %s failed\n", __func__,
+ s->description);
+ return -EIO;
+ }
+ }
+
+#ifdef DISPLAY_ELAPSED_TIME
+ printf("%s: info: elapsed time %ld msec\n", get_timer(start));
+#endif
+
+ return 0;
+}
+
+static int ddrphy_impedance_calibration(void __iomem *phy_base)
+{
+ int ret;
+ u32 tmp;
+
+ ret = __ddrphy_training(phy_base, impedance_calibration_sequence);
+ if (ret)
+ return ret;
+
+ /*
+ * Because of a hardware bug, IDONE flag is set when the first ZQ block
+ * is calibrated. The flag does not guarantee the completion for all
+ * the ZQ blocks. Wait a little more just in case.
+ */
+ udelay(1);
+
+ /* reflect ZQ settings and enable average algorithm*/
+ tmp = readl(phy_base + DMPHY_ZQCR);
+ tmp |= DMPHY_ZQCR_FORCE_ZCAL_VT_UPDATE;
+ writel(tmp, phy_base + DMPHY_ZQCR);
+ tmp &= ~DMPHY_ZQCR_FORCE_ZCAL_VT_UPDATE;
+ tmp |= DMPHY_ZQCR_AVGEN;
+ writel(tmp, phy_base + DMPHY_ZQCR);
+
+ return 0;
+}
+
+static int ddrphy_dram_init(void __iomem *phy_base)
+{
+ return __ddrphy_training(phy_base, dram_init_sequence);
+}
+
+static int ddrphy_training(void __iomem *phy_base)
+{
+ return __ddrphy_training(phy_base, training_sequence);
+}
+
+/* UMC */
+static void umc_set_system_latency(void __iomem *umc_dc_base, int phy_latency)
+{
+ u32 val;
+ int latency;
+
+ val = readl(umc_dc_base + UMC_RDATACTL_D0);
+ latency = (val & UMC_RDATACTL_RADLTY_MASK) >> UMC_RDATACTL_RADLTY_SHIFT;
+ latency += (val & UMC_RDATACTL_RAD2LTY_MASK) >>
+ UMC_RDATACTL_RAD2LTY_SHIFT;
+ /*
+ * UMC works at the half clock rate of the PHY.
+ * The LSB of latency is ignored
+ */
+ latency += phy_latency & ~1;
+
+ val &= ~(UMC_RDATACTL_RADLTY_MASK | UMC_RDATACTL_RAD2LTY_MASK);
+ if (latency > 0xf) {
+ val |= 0xf << UMC_RDATACTL_RADLTY_SHIFT;
+ val |= (latency - 0xf) << UMC_RDATACTL_RAD2LTY_SHIFT;
+ } else {
+ val |= latency << UMC_RDATACTL_RADLTY_SHIFT;
+ }
+
+ writel(val, umc_dc_base + UMC_RDATACTL_D0);
+ writel(val, umc_dc_base + UMC_RDATACTL_D1);
+
+ readl(umc_dc_base + UMC_RDATACTL_D1); /* relax */
+}
+
+/* enable/disable auto refresh */
+void umc_refresh_ctrl(void __iomem *umc_dc_base, int enable)
+{
+ u32 tmp;
+
+ tmp = readl(umc_dc_base + UMC_SPCSETB);
+ tmp &= ~UMC_SPCSETB_AREFMD_MASK;
+
+ if (enable)
+ tmp |= UMC_SPCSETB_AREFMD_ARB;
+ else
+ tmp |= UMC_SPCSETB_AREFMD_REG;
+
+ writel(tmp, umc_dc_base + UMC_SPCSETB);
+ udelay(1);
+}
+
+static void umc_ud_init(void __iomem *umc_base, int ch)
+{
+ writel(0x00000003, umc_base + UMC_BITPERPIXELMODE_D0);
+
+ if (ch == 2)
+ writel(0x00000033, umc_base + UMC_PAIR1DOFF_D0);
+}
+
+static void umc_dc_init(void __iomem *umc_dc_base, enum dram_freq freq,
+ enum dram_size size, int ch, int width)
+{
+ int latency;
+ u32 val;
+
+ writel(umc_cmdctla[freq], umc_dc_base + UMC_CMDCTLA);
+
+ writel(ch == 2 ? umc_cmdctlb_ch2[freq] : umc_cmdctlb_ch01[freq],
+ umc_dc_base + UMC_CMDCTLB);
+
+ writel(umc_spcctla[freq][size / (width / 16)],
+ umc_dc_base + UMC_SPCCTLA);
+ writel(umc_spcctlb[freq], umc_dc_base + UMC_SPCCTLB);
+
+ val = 0x000e000e;
+ latency = 12;
+ /* ES2 inserted one more FF to the logic. */
+ if (uniphier_get_soc_model() >= 2)
+ latency += 2;
+
+ if (latency > 0xf) {
+ val |= 0xf << UMC_RDATACTL_RADLTY_SHIFT;
+ val |= (latency - 0xf) << UMC_RDATACTL_RAD2LTY_SHIFT;
+ } else {
+ val |= latency << UMC_RDATACTL_RADLTY_SHIFT;
+ }
+
+ writel(val, umc_dc_base + UMC_RDATACTL_D0);
+ if (width >= 32)
+ writel(val, umc_dc_base + UMC_RDATACTL_D1);
+
+ writel(0x04060A02, umc_dc_base + UMC_WDATACTL_D0);
+ if (width >= 32)
+ writel(0x04060A02, umc_dc_base + UMC_WDATACTL_D1);
+ writel(0x04000000, umc_dc_base + UMC_DATASET);
+ writel(0x00400020, umc_dc_base + UMC_DCCGCTL);
+ writel(0x00000084, umc_dc_base + UMC_FLOWCTLG);
+ writel(0x00000000, umc_dc_base + UMC_ACSSETA);
+
+ writel(ch == 2 ? umc_flowctla_ch2[freq] : umc_flowctla_ch01[freq],
+ umc_dc_base + UMC_FLOWCTLA);
+
+ writel(0x00004400, umc_dc_base + UMC_FLOWCTLC);
+ writel(0x200A0A00, umc_dc_base + UMC_SPCSETB);
+ writel(0x00000520, umc_dc_base + UMC_DFICUPDCTLA);
+ writel(0x0000000D, umc_dc_base + UMC_RESPCTL);
+
+ if (ch != 2) {
+ writel(0x00202000, umc_dc_base + UMC_FLOWCTLB);
+ writel(0xFDBFFFFF, umc_dc_base + UMC_FLOWCTLOB0);
+ writel(0xFFFFFFFF, umc_dc_base + UMC_FLOWCTLOB1);
+ writel(0x00080700, umc_dc_base + UMC_BSICMAPSET);
+ } else {
+ writel(0x00200000, umc_dc_base + UMC_FLOWCTLB);
+ writel(0x00000000, umc_dc_base + UMC_BSICMAPSET);
+ }
+
+ writel(0x00000000, umc_dc_base + UMC_ERRMASKA);
+ writel(0x00000000, umc_dc_base + UMC_ERRMASKB);
+}
+
+static int umc_init(void __iomem *umc_base, enum dram_freq freq, int ch,
+ enum dram_size size, int width)
+{
+ void __iomem *umc_dc_base = umc_base + 0x00011000;
+ void __iomem *phy_base = umc_base + 0x00030000;
+ int ret;
+
+ writel(0x00000002, umc_dc_base + UMC_INITSET);
+ while (readl(umc_dc_base + UMC_INITSTAT) & BIT(2))
+ cpu_relax();
+
+ /* deassert PHY reset signals */
+ writel(UMC_DIOCTLA_CTL_NRST | UMC_DIOCTLA_CFG_NRST,
+ umc_dc_base + UMC_DIOCTLA);
+
+ ddrphy_init(phy_base, freq, width);
+
+ ret = ddrphy_impedance_calibration(phy_base);
+ if (ret)
+ return ret;
+
+ ddrphy_dram_init(phy_base);
+ if (ret)
+ return ret;
+
+ umc_dc_init(umc_dc_base, freq, size, ch, width);
+
+ umc_ud_init(umc_base, ch);
+
+ if (size) {
+ ret = ddrphy_training(phy_base);
+ if (ret)
+ return ret;
+ }
+
+ udelay(1);
+
+ /* match the system latency between UMC and PHY */
+ umc_set_system_latency(umc_dc_base,
+ ddrphy_get_system_latency(phy_base, width));
+
+ udelay(1);
+
+ /* stop auto refresh before clearing FIFO in PHY */
+ umc_refresh_ctrl(umc_dc_base, 0);
+ ddrphy_fifo_reset(phy_base);
+ umc_refresh_ctrl(umc_dc_base, 1);
+
+ udelay(10);
+
+ return 0;
+}
+
+static void um_init(void __iomem *um_base)
+{
+ writel(0x000000ff, um_base + UMC_MBUS0);
+ writel(0x000000ff, um_base + UMC_MBUS1);
+ writel(0x000000ff, um_base + UMC_MBUS2);
+ writel(0x000000ff, um_base + UMC_MBUS3);
+}
+
+int proxstream2_umc_init(const struct uniphier_board_data *bd)
+{
+ void __iomem *um_base = (void __iomem *)0x5b600000;
+ void __iomem *umc_ch0_base = (void __iomem *)0x5b800000;
+ void __iomem *umc_ch1_base = (void __iomem *)0x5ba00000;
+ void __iomem *umc_ch2_base = (void __iomem *)0x5bc00000;
+ enum dram_freq freq;
+ int ret;
+
+ switch (bd->dram_freq) {
+ case 1866:
+ freq = FREQ_1866M;
+ break;
+ case 2133:
+ freq = FREQ_2133M;
+ break;
+ default:
+ printf("unsupported DRAM frequency %d MHz\n", bd->dram_freq);
+ return -EINVAL;
+ }
+
+ ret = umc_init(umc_ch0_base, freq, 0, bd->dram_ch0_size / SZ_256M,
+ bd->dram_ch0_width);
+ if (ret) {
+ printf("failed to initialize UMC ch0\n");
+ return ret;
+ }
+
+ ret = umc_init(umc_ch1_base, freq, 1, bd->dram_ch1_size / SZ_256M,
+ bd->dram_ch1_width);
+ if (ret) {
+ printf("failed to initialize UMC ch1\n");
+ return ret;
+ }
+
+ ret = umc_init(umc_ch2_base, freq, 2, bd->dram_ch2_size / SZ_256M,
+ bd->dram_ch2_width);
+ if (ret) {
+ printf("failed to initialize UMC ch2\n");
+ return ret;
+ }
+
+ um_init(um_base);
+
+ return 0;
+}
projects / u-boot.git / commitdiff