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| author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2015-09-22 00:27:40 +0900 |
|---|---|---|
| committer | Masahiro Yamada <yamada.masahiro@socionext.com> | 2015-09-25 00:59:28 +0900 |
| commit | 28f40d4a4db2b6c701d349fd4fac286d21369de2 (patch) | |
| tree | 5e5e2fdf2be0c3226ac782c857eb4e3edefbbf54 /arch/arm/mach-uniphier/early-clk | |
| parent | 323d1f9d5bebfe55e97e23c8094055685665afef (diff) | |
| download | talos-obmc-uboot-28f40d4a4db2b6c701d349fd4fac286d21369de2.tar.gz talos-obmc-uboot-28f40d4a4db2b6c701d349fd4fac286d21369de2.zip | |
ARM: uniphier: add PH1-Pro5 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/early-clk')
| -rw-r--r-- | arch/arm/mach-uniphier/early-clk/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm/mach-uniphier/early-clk/early-clk-ph1-pro5.c | 39 |
2 files changed, 40 insertions, 0 deletions
diff --git a/arch/arm/mach-uniphier/early-clk/Makefile b/arch/arm/mach-uniphier/early-clk/Makefile index 58af1add58..939795c26d 100644 --- a/arch/arm/mach-uniphier/early-clk/Makefile +++ b/arch/arm/mach-uniphier/early-clk/Makefile @@ -2,3 +2,4 @@ obj-$(CONFIG_ARCH_UNIPHIER_PH1_SLD3) += early-clk-ph1-ld4.o obj-$(CONFIG_ARCH_UNIPHIER_PH1_LD4) += early-clk-ph1-ld4.o obj-$(CONFIG_ARCH_UNIPHIER_PH1_PRO4) += early-clk-ph1-ld4.o obj-$(CONFIG_ARCH_UNIPHIER_PH1_SLD8) += early-clk-ph1-ld4.o +obj-$(CONFIG_ARCH_UNIPHIER_PH1_PRO5) += early-clk-ph1-pro5.o diff --git a/arch/arm/mach-uniphier/early-clk/early-clk-ph1-pro5.c b/arch/arm/mach-uniphier/early-clk/early-clk-ph1-pro5.c new file mode 100644 index 0000000000..007d3b8570 --- /dev/null +++ b/arch/arm/mach-uniphier/early-clk/early-clk-ph1-pro5.c @@ -0,0 +1,39 @@ +/* + * Copyright (C) 2015 Masahiro Yamada <yamada.m@jp.panasonic.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <linux/io.h> +#include <mach/init.h> +#include <mach/sc-regs.h> + +int ph1_pro5_early_clk_init(const struct uniphier_board_data *bd) +{ + u32 tmp; + + /* + * deassert reset + * UMCA2: Ch1 (DDR3) + * UMCA1, UMC31: Ch0 (WIO1) + * UMCA0, UMC30: Ch0 (WIO0) + */ + tmp = readl(SC_RSTCTRL4); + tmp |= SC_RSTCTRL4_NRST_UMCSB | SC_RSTCTRL4_NRST_UMCA2 | + SC_RSTCTRL4_NRST_UMCA1 | SC_RSTCTRL4_NRST_UMCA0 | + SC_RSTCTRL4_NRST_UMC31 | SC_RSTCTRL4_NRST_UMC30; + writel(tmp, SC_RSTCTRL4); + readl(SC_RSTCTRL); /* dummy read */ + + /* privide clocks */ + tmp = readl(SC_CLKCTRL); + tmp |= SC_CLKCTRL_CEN_SBC | SC_CLKCTRL_CEN_PERI; + writel(tmp, SC_CLKCTRL); + tmp = readl(SC_CLKCTRL4); + tmp |= SC_CLKCTRL4_CEN_UMCSB | SC_CLKCTRL4_CEN_UMC1 | + SC_CLKCTRL4_CEN_UMC0; + writel(tmp, SC_CLKCTRL4); + readl(SC_CLKCTRL4); /* dummy read */ + + return 0; +} |
