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| author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2015-09-22 00:27:41 +0900 |
|---|---|---|
| committer | Masahiro Yamada <yamada.masahiro@socionext.com> | 2015-09-25 00:59:33 +0900 |
| commit | 019df879a93e266ac19f5eb00e4ee605db279b14 (patch) | |
| tree | b11ab5f86fa406775d870b1a51b2cf44fc8f7acc /arch/arm/mach-uniphier/memconf | |
| parent | 28f40d4a4db2b6c701d349fd4fac286d21369de2 (diff) | |
| download | u-boot-019df879a93e266ac19f5eb00e4ee605db279b14.tar.gz | |
ARM: uniphier: add ProXstream2 and PH1-LD6b support
The DDR SDRAM initialization code has not been mainlined yet, but
U-Boot proper should work.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Diffstat (limited to 'arch/arm/mach-uniphier/memconf')
| -rw-r--r-- | arch/arm/mach-uniphier/memconf/Makefile | 2 | ||||
| -rw-r--r-- | arch/arm/mach-uniphier/memconf/memconf-proxstream2.c | 64 |
2 files changed, 66 insertions, 0 deletions
diff --git a/arch/arm/mach-uniphier/memconf/Makefile b/arch/arm/mach-uniphier/memconf/Makefile index 1a718f31fa..42057a2077 100644 --- a/arch/arm/mach-uniphier/memconf/Makefile +++ b/arch/arm/mach-uniphier/memconf/Makefile @@ -1,2 +1,4 @@ obj-y += memconf.o obj-$(CONFIG_ARCH_UNIPHIER_PH1_SLD3) += memconf-ph1-sld3.o +obj-$(CONFIG_ARCH_UNIPHIER_PROXSTREAM2) += memconf-proxstream2.o +obj-$(CONFIG_ARCH_UNIPHIER_PH1_LD6B) += memconf-proxstream2.o diff --git a/arch/arm/mach-uniphier/memconf/memconf-proxstream2.c b/arch/arm/mach-uniphier/memconf/memconf-proxstream2.c new file mode 100644 index 0000000000..d7bf0d4e5f --- /dev/null +++ b/arch/arm/mach-uniphier/memconf/memconf-proxstream2.c @@ -0,0 +1,64 @@ +/* + * Copyright (C) 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 <mach/init.h> +#include <mach/sg-regs.h> + +int proxstream2_memconf_init(const struct uniphier_board_data *bd) +{ + u32 tmp; + unsigned long size_per_word; + + tmp = readl(SG_MEMCONF); + + tmp &= ~(SG_MEMCONF_CH2_SZ_MASK | SG_MEMCONF_CH2_NUM_MASK); + + switch (bd->dram_ch2_width) { + case 16: + tmp |= SG_MEMCONF_CH2_NUM_1; + size_per_word = bd->dram_ch2_size; + break; + case 32: + tmp |= SG_MEMCONF_CH2_NUM_2; + size_per_word = bd->dram_ch2_size >> 1; + break; + default: + pr_err("error: unsupported DRAM Ch2 width\n"); + return -EINVAL; + } + + /* Set DDR size */ + switch (size_per_word) { + case SZ_64M: + tmp |= SG_MEMCONF_CH2_SZ_64M; + break; + case SZ_128M: + tmp |= SG_MEMCONF_CH2_SZ_128M; + break; + case SZ_256M: + tmp |= SG_MEMCONF_CH2_SZ_256M; + break; + case SZ_512M: + tmp |= SG_MEMCONF_CH2_SZ_512M; + break; + default: + pr_err("error: unsupported DRAM Ch2 size\n"); + return -EINVAL; + } + + if (size_per_word) + tmp &= ~SG_MEMCONF_CH2_DISABLE; + else + tmp |= SG_MEMCONF_CH2_DISABLE; + + writel(tmp, SG_MEMCONF); + + return 0; +} |