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authorMasahiro Yamada <yamada.masahiro@socionext.com>2016-01-21 14:57:30 +0900
committerMasahiro Yamada <yamada.masahiro@socionext.com>2016-02-14 16:36:13 +0900
commit84a7562e49b7168bef3a0b55c4605dea63413c0f (patch)
treef9773a2fed82a8d31af947c2e604e8952fba4bf5 /arch/arm/mach-uniphier
parentd566f754256e71aadd40a0a031997be42fce3d08 (diff)
downloadtalos-obmc-uboot-84a7562e49b7168bef3a0b55c4605dea63413c0f.tar.gz
talos-obmc-uboot-84a7562e49b7168bef3a0b55c4605dea63413c0f.zip
ARM: uniphier: support some more DRAM use cases on PH1-Pro4 boards
Some of PH1-Pro4 boards are equipped with larger amount of DRAM than the reference board. Add UMC settings to support them. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Diffstat (limited to 'arch/arm/mach-uniphier')
-rw-r--r--arch/arm/mach-uniphier/dram/umc-ph1-pro4.c80
1 files changed, 53 insertions, 27 deletions
diff --git a/arch/arm/mach-uniphier/dram/umc-ph1-pro4.c b/arch/arm/mach-uniphier/dram/umc-ph1-pro4.c
index 4d976e3a97..261f7cfce7 100644
--- a/arch/arm/mach-uniphier/dram/umc-ph1-pro4.c
+++ b/arch/arm/mach-uniphier/dram/umc-ph1-pro4.c
@@ -13,6 +13,16 @@
#include "ddrphy-regs.h"
#include "umc-regs.h"
+enum dram_size {
+ DRAM_SZ_128M,
+ DRAM_SZ_256M,
+ DRAM_SZ_512M,
+ DRAM_SZ_NR,
+};
+
+static u32 umc_initctlb[DRAM_SZ_NR] = {0x43030d3f, 0x43030d3f, 0x7b030d3f};
+static u32 umc_spcctla[DRAM_SZ_NR] = {0x002b0617, 0x003f0617, 0x00770617};
+
static void umc_start_ssif(void __iomem *ssif_base)
{
writel(0x00000001, ssif_base + 0x0000b004);
@@ -56,19 +66,36 @@ static void umc_start_ssif(void __iomem *ssif_base)
writel(0x00000001, ssif_base + UMC_DMDRST);
}
-static void umc_dramcont_init(void __iomem *dramcont, void __iomem *ca_base,
- int size, int freq)
+static int umc_dramcont_init(void __iomem *dramcont, void __iomem *ca_base,
+ int size, int width)
{
+ enum dram_size dram_size;
+
+ switch (size / (width / 16)) {
+ case SZ_128M:
+ dram_size = DRAM_SZ_128M;
+ break;
+ case SZ_256M:
+ dram_size = DRAM_SZ_256M;
+ break;
+ case SZ_512M:
+ dram_size = DRAM_SZ_512M;
+ break;
+ default:
+ printf("unsupported DRAM size\n");
+ return -EINVAL;
+ }
+
writel(0x66bb0f17, dramcont + UMC_CMDCTLA);
writel(0x18c6aa44, dramcont + UMC_CMDCTLB);
writel(0x5101387f, dramcont + UMC_INITCTLA);
- writel(0x43030d3f, dramcont + UMC_INITCTLB);
+ writel(umc_initctlb[dram_size], dramcont + UMC_INITCTLB);
writel(0x00ff00ff, dramcont + UMC_INITCTLC);
writel(0x00000d71, dramcont + UMC_DRMMR0);
writel(0x00000006, dramcont + UMC_DRMMR1);
writel(0x00000298, dramcont + UMC_DRMMR2);
writel(0x00000000, dramcont + UMC_DRMMR3);
- writel(0x003f0617, dramcont + UMC_SPCCTLA);
+ writel(umc_spcctla[dram_size], dramcont + UMC_SPCCTLA);
writel(0x00ff0008, dramcont + UMC_SPCCTLB);
writel(0x000c00ae, dramcont + UMC_RDATACTL_D0);
writel(0x000c00ae, dramcont + UMC_RDATACTL_D1);
@@ -90,9 +117,11 @@ static void umc_dramcont_init(void __iomem *dramcont, void __iomem *ca_base,
writel(0x200a0a00, dramcont + UMC_SPCSETB);
writel(0x00010000, dramcont + UMC_SPCSETD);
writel(0x80000020, dramcont + UMC_DFICUPDCTLA);
+
+ return 0;
}
-static int umc_init_sub(int freq, int size_ch0, int size_ch1)
+int ph1_pro4_umc_init(const struct uniphier_board_data *bd)
{
void __iomem *ssif_base = (void __iomem *)UMC_SSIF_BASE;
void __iomem *ca_base0 = (void __iomem *)UMC_CA_BASE(0);
@@ -103,6 +132,12 @@ static int umc_init_sub(int freq, int size_ch0, int size_ch1)
void __iomem *phy0_1 = (void __iomem *)DDRPHY_BASE(0, 1);
void __iomem *phy1_0 = (void __iomem *)DDRPHY_BASE(1, 0);
void __iomem *phy1_1 = (void __iomem *)DDRPHY_BASE(1, 1);
+ int ret;
+
+ if (bd->dram_freq != 1600) {
+ pr_err("Unsupported DDR configuration\n");
+ return -EINVAL;
+ }
umc_dram_init_start(dramcont0);
umc_dram_init_start(dramcont1);
@@ -111,52 +146,43 @@ static int umc_init_sub(int freq, int size_ch0, int size_ch1)
writel(0x00000101, dramcont0 + UMC_DIOCTLA);
- ph1_pro4_ddrphy_init(phy0_0, freq, size_ch0);
+ ph1_pro4_ddrphy_init(phy0_0, bd->dram_freq, bd->dram_ch0_size);
ddrphy_prepare_training(phy0_0, 0);
ddrphy_training(phy0_0);
writel(0x00000103, dramcont0 + UMC_DIOCTLA);
- ph1_pro4_ddrphy_init(phy0_1, freq, size_ch0);
+ ph1_pro4_ddrphy_init(phy0_1, bd->dram_freq, bd->dram_ch0_size);
ddrphy_prepare_training(phy0_1, 1);
ddrphy_training(phy0_1);
writel(0x00000101, dramcont1 + UMC_DIOCTLA);
- ph1_pro4_ddrphy_init(phy1_0, freq, size_ch1);
+ ph1_pro4_ddrphy_init(phy1_0, bd->dram_freq, bd->dram_ch1_size);
ddrphy_prepare_training(phy1_0, 0);
ddrphy_training(phy1_0);
writel(0x00000103, dramcont1 + UMC_DIOCTLA);
- ph1_pro4_ddrphy_init(phy1_1, freq, size_ch1);
+ ph1_pro4_ddrphy_init(phy1_1, bd->dram_freq, bd->dram_ch1_size);
ddrphy_prepare_training(phy1_1, 1);
ddrphy_training(phy1_1);
- umc_dramcont_init(dramcont0, ca_base0, size_ch0, freq);
- umc_dramcont_init(dramcont1, ca_base1, size_ch1, freq);
+ ret = umc_dramcont_init(dramcont0, ca_base0, bd->dram_ch0_size,
+ bd->dram_ch0_width);
+ if (ret)
+ return ret;
+
+ ret = umc_dramcont_init(dramcont1, ca_base1, bd->dram_ch1_size,
+ bd->dram_ch1_width);
+ if (ret)
+ return ret;
umc_start_ssif(ssif_base);
return 0;
}
-
-int ph1_pro4_umc_init(const struct uniphier_board_data *bd)
-{
- if (((bd->dram_ch0_size == SZ_512M && bd->dram_ch0_width == 32) ||
- (bd->dram_ch0_size == SZ_256M && bd->dram_ch0_width == 16)) &&
- ((bd->dram_ch1_size == SZ_512M && bd->dram_ch1_width == 32) ||
- (bd->dram_ch1_size == SZ_256M && bd->dram_ch1_width == 16)) &&
- bd->dram_freq == 1600) {
- return umc_init_sub(bd->dram_freq,
- bd->dram_ch0_size / SZ_128M,
- bd->dram_ch1_size / SZ_128M);
- } else {
- pr_err("Unsupported DDR configuration\n");
- return -EINVAL;
- }
-}
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