2 * Copyright (C) 2011-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
4 * SPDX-License-Identifier: GPL-2.0+
10 #include <linux/sizes.h>
13 #include "ddrphy-regs.h"
16 static void umc_start_ssif(void __iomem *ssif_base)
18 writel(0x00000000, ssif_base + 0x0000b004);
19 writel(0xffffffff, ssif_base + 0x0000c004);
20 writel(0x000fffcf, ssif_base + 0x0000c008);
21 writel(0x00000001, ssif_base + 0x0000b000);
22 writel(0x00000001, ssif_base + 0x0000c000);
23 writel(0x03010101, ssif_base + UMC_MDMCHSEL);
24 writel(0x03010100, ssif_base + UMC_DMDCHSEL);
26 writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_FETCH);
27 writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_COMQUE0);
28 writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_COMWC0);
29 writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_COMRC0);
30 writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_COMQUE1);
31 writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_COMWC1);
32 writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_COMRC1);
33 writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_WC);
34 writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_RC);
35 writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_DST);
37 writel(0x00000001, ssif_base + UMC_CPURST);
38 writel(0x00000001, ssif_base + UMC_IDSRST);
39 writel(0x00000001, ssif_base + UMC_IXMRST);
40 writel(0x00000001, ssif_base + UMC_MDMRST);
41 writel(0x00000001, ssif_base + UMC_MDDRST);
42 writel(0x00000001, ssif_base + UMC_SIORST);
43 writel(0x00000001, ssif_base + UMC_VIORST);
44 writel(0x00000001, ssif_base + UMC_FRCRST);
45 writel(0x00000001, ssif_base + UMC_RGLRST);
46 writel(0x00000001, ssif_base + UMC_AIORST);
47 writel(0x00000001, ssif_base + UMC_DMDRST);
50 static void umc_dramcont_init(void __iomem *dramcont, void __iomem *ca_base,
51 int size, int freq, bool ddr3plus)
53 writel(ddr3plus ? 0x45990b11 : 0x55990b11, dramcont + UMC_CMDCTLA);
54 writel(ddr3plus ? 0x16958924 : 0x16958944, dramcont + UMC_CMDCTLB);
57 writel(0x00240512, dramcont + UMC_SPCCTLA);
59 writel(0x00350512, dramcont + UMC_SPCCTLA);
61 writel(0x00ff0006, dramcont + UMC_SPCCTLB);
62 writel(0x000a00ac, dramcont + UMC_RDATACTL_D0);
63 writel(0x04060806, dramcont + UMC_WDATACTL_D0);
64 writel(0x04a02000, dramcont + UMC_DATASET);
65 writel(0x00000000, ca_base + 0x2300);
66 writel(0x00400020, dramcont + UMC_DCCGCTL);
67 writel(0x00000003, dramcont + 0x7000);
68 writel(0x0000004f, dramcont + 0x8000);
69 writel(0x000000c3, dramcont + 0x8004);
70 writel(0x00000077, dramcont + 0x8008);
71 writel(0x0000003b, dramcont + UMC_DICGCTLA);
72 writel(0x020a0808, dramcont + UMC_DICGCTLB);
73 writel(0x00000004, dramcont + UMC_FLOWCTLG);
74 writel(0x80000201, ca_base + 0xc20);
75 writel(0x0801e01e, dramcont + UMC_FLOWCTLA);
76 writel(0x00200000, dramcont + UMC_FLOWCTLB);
77 writel(0x00004444, dramcont + UMC_FLOWCTLC);
78 writel(0x200a0a00, dramcont + UMC_SPCSETB);
79 writel(0x00000000, dramcont + UMC_SPCSETD);
80 writel(0x00000520, dramcont + UMC_DFICUPDCTLA);
83 static int umc_init_sub(int freq, int size_ch0, int size_ch1, bool ddr3plus)
85 void __iomem *ssif_base = (void __iomem *)UMC_SSIF_BASE;
86 void __iomem *ca_base0 = (void __iomem *)UMC_CA_BASE(0);
87 void __iomem *ca_base1 = (void __iomem *)UMC_CA_BASE(1);
88 void __iomem *dramcont0 = (void __iomem *)UMC_DRAMCONT_BASE(0);
89 void __iomem *dramcont1 = (void __iomem *)UMC_DRAMCONT_BASE(1);
90 void __iomem *phy0_0 = (void __iomem *)DDRPHY_BASE(0, 0);
91 void __iomem *phy1_0 = (void __iomem *)DDRPHY_BASE(1, 0);
93 umc_dram_init_start(dramcont0);
94 umc_dram_init_start(dramcont1);
95 umc_dram_init_poll(dramcont0);
96 umc_dram_init_poll(dramcont1);
98 writel(0x00000101, dramcont0 + UMC_DIOCTLA);
100 ph1_ld4_ddrphy_init(phy0_0, freq, size_ch0, ddr3plus);
102 ddrphy_prepare_training(phy0_0, 0);
103 ddrphy_training(phy0_0);
105 writel(0x00000101, dramcont1 + UMC_DIOCTLA);
107 ph1_ld4_ddrphy_init(phy1_0, freq, size_ch1, ddr3plus);
109 ddrphy_prepare_training(phy1_0, 1);
110 ddrphy_training(phy1_0);
112 umc_dramcont_init(dramcont0, ca_base0, size_ch0, freq, ddr3plus);
113 umc_dramcont_init(dramcont1, ca_base1, size_ch1, freq, ddr3plus);
115 umc_start_ssif(ssif_base);
120 int ph1_sld8_umc_init(const struct uniphier_board_data *bd)
122 if ((bd->dram_ch[0].size == SZ_128M || bd->dram_ch[0].size == SZ_256M) &&
123 (bd->dram_ch[1].size == SZ_128M || bd->dram_ch[1].size == SZ_256M) &&
124 bd->dram_freq == 1333 &&
125 bd->dram_ch[0].width == 16 && bd->dram_ch[1].width == 16) {
126 return umc_init_sub(bd->dram_freq,
127 bd->dram_ch[0].size / SZ_128M,
128 bd->dram_ch[1].size / SZ_128M,
131 pr_err("Unsupported DDR configuration\n");