arch/arm/mach-uniphier/umc/umc-ph1-ld4.c

   1 /*
   2  * Copyright (C) 2011-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include <common.h>
   8 #include <linux/err.h>
   9 #include <linux/io.h>
  10 #include <linux/sizes.h>
  11 #include <mach/init.h>
  12 #include <mach/umc-regs.h>
  13 #include <mach/ddrphy-regs.h>
  14
  15 static void umc_start_ssif(void __iomem *ssif_base)
  16 {
  17         writel(0x00000000, ssif_base + 0x0000b004);
  18         writel(0xffffffff, ssif_base + 0x0000c004);
  19         writel(0x000fffcf, ssif_base + 0x0000c008);
  20         writel(0x00000001, ssif_base + 0x0000b000);
  21         writel(0x00000001, ssif_base + 0x0000c000);
  22         writel(0x03010101, ssif_base + UMC_MDMCHSEL);
  23         writel(0x03010100, ssif_base + UMC_DMDCHSEL);
  24
  25         writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_FETCH);
  26         writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_COMQUE0);
  27         writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_COMWC0);
  28         writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_COMRC0);
  29         writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_COMQUE1);
  30         writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_COMWC1);
  31         writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_COMRC1);
  32         writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_WC);
  33         writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_RC);
  34         writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_DST);
  35
  36         writel(0x00000001, ssif_base + UMC_CPURST);
  37         writel(0x00000001, ssif_base + UMC_IDSRST);
  38         writel(0x00000001, ssif_base + UMC_IXMRST);
  39         writel(0x00000001, ssif_base + UMC_MDMRST);
  40         writel(0x00000001, ssif_base + UMC_MDDRST);
  41         writel(0x00000001, ssif_base + UMC_SIORST);
  42         writel(0x00000001, ssif_base + UMC_VIORST);
  43         writel(0x00000001, ssif_base + UMC_FRCRST);
  44         writel(0x00000001, ssif_base + UMC_RGLRST);
  45         writel(0x00000001, ssif_base + UMC_AIORST);
  46         writel(0x00000001, ssif_base + UMC_DMDRST);
  47 }
  48
  49 static void umc_dramcont_init(void __iomem *dramcont, void __iomem *ca_base,
  50                               int size, int freq)
  51 {
  52         if (freq == 1333) {
  53                 writel(0x45990b11, dramcont + UMC_CMDCTLA);
  54                 writel(0x16958924, dramcont + UMC_CMDCTLB);
  55                 writel(0x5101046A, dramcont + UMC_INITCTLA);
  56
  57                 if (size == 1)
  58                         writel(0x27028B0A, dramcont + UMC_INITCTLB);
  59                 else if (size == 2)
  60                         writel(0x38028B0A, dramcont + UMC_INITCTLB);
  61
  62                 writel(0x000FF0FF, dramcont + UMC_INITCTLC);
  63                 writel(0x00000b51, dramcont + UMC_DRMMR0);
  64         } else if (freq == 1600) {
  65                 writel(0x36BB0F17, dramcont + UMC_CMDCTLA);
  66                 writel(0x18C6AA24, dramcont + UMC_CMDCTLB);
  67                 writel(0x5101387F, dramcont + UMC_INITCTLA);
  68
  69                 if (size == 1)
  70                         writel(0x2F030D3F, dramcont + UMC_INITCTLB);
  71                 else if (size == 2)
  72                         writel(0x43030D3F, dramcont + UMC_INITCTLB);
  73
  74                 writel(0x00FF00FF, dramcont + UMC_INITCTLC);
  75                 writel(0x00000d71, dramcont + UMC_DRMMR0);
  76         }
  77
  78         writel(0x00000006, dramcont + UMC_DRMMR1);
  79
  80         if (freq == 1333)
  81                 writel(0x00000290, dramcont + UMC_DRMMR2);
  82         else if (freq == 1600)
  83                 writel(0x00000298, dramcont + UMC_DRMMR2);
  84
  85         writel(0x00000800, dramcont + UMC_DRMMR3);
  86
  87         if (freq == 1333) {
  88                 if (size == 1)
  89                         writel(0x00240512, dramcont + UMC_SPCCTLA);
  90                 else if (size == 2)
  91                         writel(0x00350512, dramcont + UMC_SPCCTLA);
  92
  93                 writel(0x00ff0006, dramcont + UMC_SPCCTLB);
  94                 writel(0x000a00ac, dramcont + UMC_RDATACTL_D0);
  95         } else if (freq == 1600) {
  96                 if (size == 1)
  97                         writel(0x002B0617, dramcont + UMC_SPCCTLA);
  98                 else if (size == 2)
  99                         writel(0x003F0617, dramcont + UMC_SPCCTLA);
 100
 101                 writel(0x00ff0008, dramcont + UMC_SPCCTLB);
 102                 writel(0x000c00ae, dramcont + UMC_RDATACTL_D0);
 103         }
 104
 105         writel(0x04060806, dramcont + UMC_WDATACTL_D0);
 106         writel(0x04a02000, dramcont + UMC_DATASET);
 107         writel(0x00000000, ca_base + 0x2300);
 108         writel(0x00400020, dramcont + UMC_DCCGCTL);
 109         writel(0x00000003, dramcont + 0x7000);
 110         writel(0x0000000f, dramcont + 0x8000);
 111         writel(0x000000c3, dramcont + 0x8004);
 112         writel(0x00000071, dramcont + 0x8008);
 113         writel(0x0000003b, dramcont + UMC_DICGCTLA);
 114         writel(0x020a0808, dramcont + UMC_DICGCTLB);
 115         writel(0x00000004, dramcont + UMC_FLOWCTLG);
 116         writel(0x80000201, ca_base + 0xc20);
 117         writel(0x0801e01e, dramcont + UMC_FLOWCTLA);
 118         writel(0x00200000, dramcont + UMC_FLOWCTLB);
 119         writel(0x00004444, dramcont + UMC_FLOWCTLC);
 120         writel(0x200a0a00, dramcont + UMC_SPCSETB);
 121         writel(0x00000000, dramcont + UMC_SPCSETD);
 122         writel(0x00000520, dramcont + UMC_DFICUPDCTLA);
 123 }
 124
 125 static int umc_init_sub(int freq, int size_ch0, int size_ch1)
 126 {
 127         void __iomem *ssif_base = (void __iomem *)UMC_SSIF_BASE;
 128         void __iomem *ca_base0 = (void __iomem *)UMC_CA_BASE(0);
 129         void __iomem *ca_base1 = (void __iomem *)UMC_CA_BASE(1);
 130         void __iomem *dramcont0 = (void __iomem *)UMC_DRAMCONT_BASE(0);
 131         void __iomem *dramcont1 = (void __iomem *)UMC_DRAMCONT_BASE(1);
 132         void __iomem *phy0_0 = (void __iomem *)DDRPHY_BASE(0, 0);
 133         void __iomem *phy1_0 = (void __iomem *)DDRPHY_BASE(1, 0);
 134
 135         umc_dram_init_start(dramcont0);
 136         umc_dram_init_start(dramcont1);
 137         umc_dram_init_poll(dramcont0);
 138         umc_dram_init_poll(dramcont1);
 139
 140         writel(0x00000101, dramcont0 + UMC_DIOCTLA);
 141
 142         ph1_ld4_ddrphy_init(phy0_0, freq, size_ch0);
 143
 144         ddrphy_prepare_training(phy0_0, 0);
 145         ddrphy_training(phy0_0);
 146
 147         writel(0x00000101, dramcont1 + UMC_DIOCTLA);
 148
 149         ph1_ld4_ddrphy_init(phy1_0, freq, size_ch1);
 150
 151         ddrphy_prepare_training(phy1_0, 1);
 152         ddrphy_training(phy1_0);
 153
 154         umc_dramcont_init(dramcont0, ca_base0, size_ch0, freq);
 155         umc_dramcont_init(dramcont1, ca_base1, size_ch1, freq);
 156
 157         umc_start_ssif(ssif_base);
 158
 159         return 0;
 160 }
 161
 162 int ph1_ld4_umc_init(const struct uniphier_board_data *bd)
 163 {
 164         if ((bd->dram_ch0_size == SZ_128M || bd->dram_ch0_size == SZ_256M) &&
 165             (bd->dram_ch1_size == SZ_128M || bd->dram_ch1_size == SZ_256M) &&
 166             (bd->dram_freq == 1333 || bd->dram_freq == 1600) &&
 167             bd->dram_ch0_width == 16 && bd->dram_ch1_width == 16) {
 168                 return umc_init_sub(bd->dram_freq,
 169                                     bd->dram_ch0_size / SZ_128M,
 170                                     bd->dram_ch1_size / SZ_128M);
 171         } else {
 172                 pr_err("Unsupported DDR configuration\n");
 173                 return -EINVAL;
 174         }
 175 }