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ARM: uniphier: support more DRAM use cases for PH1-sLD8 

Support DDR3-1600 / 512MB DDR size.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
utp
Masahiro Yamada 2016-02-26 14:21:45 +09:00
parent 82e5950802
commit 380a8cafc0
1 changed files with 40 additions and 6 deletions
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46
arch/arm/mach-uniphier/dram/umc-ph1-sld8.c
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@ -13,13 +13,29 @@
#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_512M,
DRAM_SZ_NR,
};
static u32 umc_spcctla[DRAM_SZ_NR] = {0x00240512, 0x00350512};
static u32 umc_cmdctla[DRAM_FREQ_NR] = {0x55990b11, 0x66bb0f17};
static u32 umc_cmdctla_plus[DRAM_FREQ_NR] = {0x45990b11, 0x46bb0f17};
static u32 umc_cmdctlb[DRAM_FREQ_NR] = {0x16958944, 0x18c6ab44};
static u32 umc_cmdctlb_plus[DRAM_FREQ_NR] = {0x16958924, 0x18c6ab24};
static u32 umc_spcctla[DRAM_FREQ_NR][DRAM_SZ_NR] = {
{0x00240512, 0x00350512, 0x00000000}, /* no data for 1333MHz,128MB */
{0x002b0617, 0x003f0617, 0x00670617},
};
static u32 umc_spcctlb[DRAM_FREQ_NR] = {0x00ff0006, 0x00ff0008};
static u32 umc_rdatactl[DRAM_FREQ_NR] = {0x000a00ac, 0x000c00ac};
static void umc_start_ssif(void __iomem *ssif_base)
{
@ -58,8 +74,21 @@ static void umc_start_ssif(void __iomem *ssif_base)
static int umc_dramcont_init(void __iomem *dramcont, void __iomem *ca_base,
int size, int freq, bool ddr3plus)
{
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;
@ -69,16 +98,21 @@ static int umc_dramcont_init(void __iomem *dramcont, void __iomem *ca_base,
case 2:
size_e = DRAM_SZ_256M;
break;
case 4:
size_e = DRAM_SZ_512M;
break;
default:
pr_err("unsupported DRAM size\n");
return -EINVAL;
}
writel(ddr3plus ? 0x45990b11 : 0x55990b11, dramcont + UMC_CMDCTLA);
writel(ddr3plus ? 0x16958924 : 0x16958944, dramcont + UMC_CMDCTLB);
writel(umc_spcctla[size_e], dramcont + UMC_SPCCTLA);
writel(0x00ff0006, dramcont + UMC_SPCCTLB);
writel(0x000a00ac, dramcont + UMC_RDATACTL_D0);
writel((ddr3plus ? umc_cmdctla_plus : umc_cmdctla)[freq_e],
dramcont + UMC_CMDCTLA);
writel((ddr3plus ? umc_cmdctlb_plus : umc_cmdctlb)[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);