arch/arm/mach-uniphier/dram/umc-ph1-pro4.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
  12 #include "../init.h"
  13 #include "ddrphy-regs.h"
  14 #include "umc-regs.h"
  15
  16 enum dram_size {
  17         DRAM_SZ_128M,
  18         DRAM_SZ_256M,
  19         DRAM_SZ_512M,
  20         DRAM_SZ_NR,
  21 };
  22
  23 static u32 umc_spcctla[DRAM_SZ_NR] = {0x002b0617, 0x003f0617, 0x00770617};
  24
  25 static void umc_start_ssif(void __iomem *ssif_base)
  26 {
  27         writel(0x00000000, ssif_base + 0x0000b004);
  28         writel(0xffffffff, ssif_base + 0x0000c004);
  29         writel(0x000fffcf, ssif_base + 0x0000c008);
  30         writel(0x00000001, ssif_base + 0x0000b000);
  31         writel(0x00000001, ssif_base + 0x0000c000);
  32
  33         writel(0x03010100, ssif_base + UMC_HDMCHSEL);
  34         writel(0x03010101, ssif_base + UMC_MDMCHSEL);
  35         writel(0x03010100, ssif_base + UMC_DVCCHSEL);
  36         writel(0x03010100, ssif_base + UMC_DMDCHSEL);
  37
  38         writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_FETCH);
  39         writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_COMQUE0);
  40         writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_COMWC0);
  41         writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_COMRC0);
  42         writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_COMQUE1);
  43         writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_COMWC1);
  44         writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_COMRC1);
  45         writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_WC);
  46         writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_RC);
  47         writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_DST);
  48         writel(0x00000000, ssif_base + 0x0000c044);             /* DCGIV_SSIF_REG */
  49
  50         writel(0x00000001, ssif_base + UMC_CPURST);
  51         writel(0x00000001, ssif_base + UMC_IDSRST);
  52         writel(0x00000001, ssif_base + UMC_IXMRST);
  53         writel(0x00000001, ssif_base + UMC_HDMRST);
  54         writel(0x00000001, ssif_base + UMC_MDMRST);
  55         writel(0x00000001, ssif_base + UMC_HDDRST);
  56         writel(0x00000001, ssif_base + UMC_MDDRST);
  57         writel(0x00000001, ssif_base + UMC_SIORST);
  58         writel(0x00000001, ssif_base + UMC_GIORST);
  59         writel(0x00000001, ssif_base + UMC_HD2RST);
  60         writel(0x00000001, ssif_base + UMC_VIORST);
  61         writel(0x00000001, ssif_base + UMC_DVCRST);
  62         writel(0x00000001, ssif_base + UMC_RGLRST);
  63         writel(0x00000001, ssif_base + UMC_VPERST);
  64         writel(0x00000001, ssif_base + UMC_AIORST);
  65         writel(0x00000001, ssif_base + UMC_DMDRST);
  66 }
  67
  68 static int umc_dramcont_init(void __iomem *dramcont, void __iomem *ca_base,
  69                              int size, int width)
  70 {
  71         enum dram_size dram_size;
  72
  73         switch (size / (width / 16)) {
  74         case SZ_128M:
  75                 dram_size = DRAM_SZ_128M;
  76                 break;
  77         case SZ_256M:
  78                 dram_size = DRAM_SZ_256M;
  79                 break;
  80         case SZ_512M:
  81                 dram_size = DRAM_SZ_512M;
  82                 break;
  83         default:
  84                 pr_err("unsupported DRAM size\n");
  85                 return -EINVAL;
  86         }
  87
  88         writel(0x66bb0f17, dramcont + UMC_CMDCTLA);
  89         writel(0x18c6aa44, dramcont + UMC_CMDCTLB);
  90         writel(umc_spcctla[dram_size], dramcont + UMC_SPCCTLA);
  91         writel(0x00ff0008, dramcont + UMC_SPCCTLB);
  92         writel(0x000c00ae, dramcont + UMC_RDATACTL_D0);
  93         writel(0x000c00ae, dramcont + UMC_RDATACTL_D1);
  94         writel(0x04060802, dramcont + UMC_WDATACTL_D0);
  95         writel(0x04060802, dramcont + UMC_WDATACTL_D1);
  96         writel(0x04a02000, dramcont + UMC_DATASET);
  97         writel(0x00000000, ca_base + 0x2300);
  98         writel(0x00400020, dramcont + UMC_DCCGCTL);
  99         writel(0x0000000f, dramcont + 0x7000);
 100         writel(0x0000000f, dramcont + 0x8000);
 101         writel(0x000000c3, dramcont + 0x8004);
 102         writel(0x00000071, dramcont + 0x8008);
 103         writel(0x00000004, dramcont + UMC_FLOWCTLG);
 104         writel(0x00000000, dramcont + 0x0060);
 105         writel(0x80000201, ca_base + 0xc20);
 106         writel(0x0801e01e, dramcont + UMC_FLOWCTLA);
 107         writel(0x00200000, dramcont + UMC_FLOWCTLB);
 108         writel(0x00004444, dramcont + UMC_FLOWCTLC);
 109         writel(0x200a0a00, dramcont + UMC_SPCSETB);
 110         writel(0x00010000, dramcont + UMC_SPCSETD);
 111         writel(0x80000020, dramcont + UMC_DFICUPDCTLA);
 112
 113         return 0;
 114 }
 115
 116 int ph1_pro4_umc_init(const struct uniphier_board_data *bd)
 117 {
 118         void __iomem *ssif_base = (void __iomem *)UMC_SSIF_BASE;
 119         void __iomem *ca_base0 = (void __iomem *)UMC_CA_BASE(0);
 120         void __iomem *ca_base1 = (void __iomem *)UMC_CA_BASE(1);
 121         void __iomem *dramcont0 = (void __iomem *)UMC_DRAMCONT_BASE(0);
 122         void __iomem *dramcont1 = (void __iomem *)UMC_DRAMCONT_BASE(1);
 123         void __iomem *phy0_0 = (void __iomem *)DDRPHY_BASE(0, 0);
 124         void __iomem *phy0_1 = (void __iomem *)DDRPHY_BASE(0, 1);
 125         void __iomem *phy1_0 = (void __iomem *)DDRPHY_BASE(1, 0);
 126         void __iomem *phy1_1 = (void __iomem *)DDRPHY_BASE(1, 1);
 127         int ret;
 128
 129         if (bd->dram_freq != 1600) {
 130                 pr_err("Unsupported DDR configuration\n");
 131                 return -EINVAL;
 132         }
 133
 134         umc_dram_init_start(dramcont0);
 135         umc_dram_init_start(dramcont1);
 136         umc_dram_init_poll(dramcont0);
 137         umc_dram_init_poll(dramcont1);
 138
 139         writel(0x00000101, dramcont0 + UMC_DIOCTLA);
 140
 141         ph1_ld4_ddrphy_init(phy0_0, bd->dram_freq, bd->dram_ch[0].size,
 142                             bd->dram_ddr3plus);
 143
 144         ddrphy_prepare_training(phy0_0, 0);
 145         ddrphy_training(phy0_0);
 146
 147         writel(0x00000103, dramcont0 + UMC_DIOCTLA);
 148
 149         ph1_ld4_ddrphy_init(phy0_1, bd->dram_freq, bd->dram_ch[0].size,
 150                             bd->dram_ddr3plus);
 151
 152         ddrphy_prepare_training(phy0_1, 1);
 153         ddrphy_training(phy0_1);
 154
 155         writel(0x00000101, dramcont1 + UMC_DIOCTLA);
 156
 157         ph1_ld4_ddrphy_init(phy1_0, bd->dram_freq, bd->dram_ch[1].size,
 158                             bd->dram_ddr3plus);
 159
 160         ddrphy_prepare_training(phy1_0, 0);
 161         ddrphy_training(phy1_0);
 162
 163         writel(0x00000103, dramcont1 + UMC_DIOCTLA);
 164
 165         ph1_ld4_ddrphy_init(phy1_1, bd->dram_freq, bd->dram_ch[1].size,
 166                             bd->dram_ddr3plus);
 167
 168         ddrphy_prepare_training(phy1_1, 1);
 169         ddrphy_training(phy1_1);
 170
 171         ret = umc_dramcont_init(dramcont0, ca_base0, bd->dram_ch[0].size,
 172                                 bd->dram_ch[0].width);
 173         if (ret)
 174                 return ret;
 175
 176         ret = umc_dramcont_init(dramcont1, ca_base1, bd->dram_ch[1].size,
 177                                 bd->dram_ch[1].width);
 178         if (ret)
 179                 return ret;
 180
 181         umc_start_ssif(ssif_base);
 182
 183         return 0;
 184 }