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/*
* Copyright (C) 2011-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <linux/err.h>
#include <linux/io.h>
#include <linux/sizes.h>
#include "../init.h"
#include "ddrphy-regs.h"
#include "umc-regs.h"
enum dram_freq {
DRAM_FREQ_1333M,
DRAM_FREQ_1600M,
DRAM_FREQ_NR,
};
enum dram_size {
DRAM_SZ_128M,
DRAM_SZ_256M,
DRAM_SZ_NR,
};
static u32 umc_cmdctla_plus[DRAM_FREQ_NR] = {0x45990b11, 0x36bb0f17};
static u32 umc_cmdctlb_plus[DRAM_FREQ_NR] = {0x16958924, 0x18c6aa24};
static u32 umc_spcctla[DRAM_FREQ_NR][DRAM_SZ_NR] = {
{0x00240512, 0x00350512},
{0x002b0617, 0x003f0617},
};
static u32 umc_spcctlb[DRAM_FREQ_NR] = {0x00ff0006, 0x00ff0008};
static u32 umc_rdatactl[DRAM_FREQ_NR] = {0x000a00ac, 0x000c00ae};
static void umc_start_ssif(void __iomem *ssif_base)
{
writel(0x00000000, ssif_base + 0x0000b004);
writel(0xffffffff, ssif_base + 0x0000c004);
writel(0x000fffcf, ssif_base + 0x0000c008);
writel(0x00000001, ssif_base + 0x0000b000);
writel(0x00000001, ssif_base + 0x0000c000);
writel(0x03010101, ssif_base + UMC_MDMCHSEL);
writel(0x03010100, ssif_base + UMC_DMDCHSEL);
writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_FETCH);
writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_COMQUE0);
writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_COMWC0);
writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_COMRC0);
writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_COMQUE1);
writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_COMWC1);
writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_COMRC1);
writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_WC);
writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_RC);
writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_DST);
writel(0x00000001, ssif_base + UMC_CPURST);
writel(0x00000001, ssif_base + UMC_IDSRST);
writel(0x00000001, ssif_base + UMC_IXMRST);
writel(0x00000001, ssif_base + UMC_MDMRST);
writel(0x00000001, ssif_base + UMC_MDDRST);
writel(0x00000001, ssif_base + UMC_SIORST);
writel(0x00000001, ssif_base + UMC_VIORST);
writel(0x00000001, ssif_base + UMC_FRCRST);
writel(0x00000001, ssif_base + UMC_RGLRST);
writel(0x00000001, ssif_base + UMC_AIORST);
writel(0x00000001, ssif_base + UMC_DMDRST);
}
static int umc_dramcont_init(void __iomem *dramcont, void __iomem *ca_base,
int size, int freq)
{
enum dram_freq freq_e;
enum dram_size size_e;
switch (freq) {
case 1333:
freq_e = DRAM_FREQ_1333M;
break;
case 1600:
freq_e = DRAM_FREQ_1600M;
break;
default:
pr_err("unsupported DRAM frequency %d MHz\n", freq);
return -EINVAL;
}
switch (size) {
case 0:
return 0;
case 1:
size_e = DRAM_SZ_128M;
break;
case 2:
size_e = DRAM_SZ_256M;
break;
default:
pr_err("unsupported DRAM size\n");
return -EINVAL;
}
writel(umc_cmdctla_plus[freq_e], dramcont + UMC_CMDCTLA);
writel(umc_cmdctlb_plus[freq_e], dramcont + UMC_CMDCTLB);
writel(umc_spcctla[freq_e][size_e], dramcont + UMC_SPCCTLA);
writel(umc_spcctlb[freq_e], dramcont + UMC_SPCCTLB);
writel(umc_rdatactl[freq_e], dramcont + UMC_RDATACTL_D0);
writel(0x04060806, dramcont + UMC_WDATACTL_D0);
writel(0x04a02000, dramcont + UMC_DATASET);
writel(0x00000000, ca_base + 0x2300);
writel(0x00400020, dramcont + UMC_DCCGCTL);
writel(0x00000003, dramcont + 0x7000);
writel(0x0000000f, dramcont + 0x8000);
writel(0x000000c3, dramcont + 0x8004);
writel(0x00000071, dramcont + 0x8008);
writel(0x0000003b, dramcont + UMC_DICGCTLA);
writel(0x020a0808, dramcont + UMC_DICGCTLB);
writel(0x00000004, dramcont + UMC_FLOWCTLG);
writel(0x80000201, ca_base + 0xc20);
writel(0x0801e01e, dramcont + UMC_FLOWCTLA);
writel(0x00200000, dramcont + UMC_FLOWCTLB);
writel(0x00004444, dramcont + UMC_FLOWCTLC);
writel(0x200a0a00, dramcont + UMC_SPCSETB);
writel(0x00000000, dramcont + UMC_SPCSETD);
writel(0x00000520, dramcont + UMC_DFICUPDCTLA);
return 0;
}
static int umc_init_sub(int freq, int size_ch0, int size_ch1, bool ddr3plus)
{
void __iomem *ssif_base = (void __iomem *)UMC_SSIF_BASE;
void __iomem *ca_base0 = (void __iomem *)UMC_CA_BASE(0);
void __iomem *ca_base1 = (void __iomem *)UMC_CA_BASE(1);
void __iomem *dramcont0 = (void __iomem *)UMC_DRAMCONT_BASE(0);
void __iomem *dramcont1 = (void __iomem *)UMC_DRAMCONT_BASE(1);
void __iomem *phy0_0 = (void __iomem *)DDRPHY_BASE(0, 0);
void __iomem *phy1_0 = (void __iomem *)DDRPHY_BASE(1, 0);
umc_dram_init_start(dramcont0);
umc_dram_init_start(dramcont1);
umc_dram_init_poll(dramcont0);
umc_dram_init_poll(dramcont1);
writel(0x00000101, dramcont0 + UMC_DIOCTLA);
ph1_ld4_ddrphy_init(phy0_0, freq, ddr3plus);
ddrphy_prepare_training(phy0_0, 0);
ddrphy_training(phy0_0);
writel(0x00000101, dramcont1 + UMC_DIOCTLA);
ph1_ld4_ddrphy_init(phy1_0, freq, ddr3plus);
ddrphy_prepare_training(phy1_0, 1);
ddrphy_training(phy1_0);
umc_dramcont_init(dramcont0, ca_base0, size_ch0, freq);
umc_dramcont_init(dramcont1, ca_base1, size_ch1, freq);
umc_start_ssif(ssif_base);
return 0;
}
int ph1_ld4_umc_init(const struct uniphier_board_data *bd)
{
if ((bd->dram_ch[0].size == SZ_128M || bd->dram_ch[0].size == SZ_256M) &&
(bd->dram_ch[1].size == SZ_128M || bd->dram_ch[1].size == SZ_256M) &&
(bd->dram_freq == 1333 || bd->dram_freq == 1600) &&
bd->dram_ch[0].width == 16 && bd->dram_ch[1].width == 16) {
return umc_init_sub(bd->dram_freq,
bd->dram_ch[0].size / SZ_128M,
bd->dram_ch[1].size / SZ_128M,
bd->dram_ddr3plus);
} else {
pr_err("Unsupported DDR configuration\n");
return -EINVAL;
}
}
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