diff options
| author | Masahiro Yamada <yamada.m@jp.panasonic.com> | 2014-10-03 19:21:06 +0900 |
|---|---|---|
| committer | Masahiro Yamada <yamada.m@jp.panasonic.com> | 2014-10-05 14:10:09 +0900 |
| commit | 5894ca007d217a2fa845facfbb62c6512396a145 (patch) | |
| tree | 872971789f6bf682ff9fd9b0a0199ccd8f59febe /arch/arm/cpu/armv7/uniphier/ph1-sld8/clkrst_init.c | |
| parent | 7f368553fcada0b38e8a096fcba4fcd64e0d2020 (diff) | |
ARM: UniPhier: add UniPhier SoC support code
These are used by Panasonic UniPhier SoC family.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Diffstat (limited to 'arch/arm/cpu/armv7/uniphier/ph1-sld8/clkrst_init.c')
| -rw-r--r-- | arch/arm/cpu/armv7/uniphier/ph1-sld8/clkrst_init.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/uniphier/ph1-sld8/clkrst_init.c b/arch/arm/cpu/armv7/uniphier/ph1-sld8/clkrst_init.c new file mode 100644 index 0000000000..18965a94c5 --- /dev/null +++ b/arch/arm/cpu/armv7/uniphier/ph1-sld8/clkrst_init.c @@ -0,0 +1,29 @@ +/* + * Copyright (C) 2011-2014 Panasonic Corporation + * Author: Masahiro Yamada <yamada.m@jp.panasonic.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/arch/sc-regs.h> + +void clkrst_init(void) +{ + u32 tmp; + + /* deassert reset */ + tmp = readl(SC_RSTCTRL); + tmp |= SC_RSTCTRL_NRST_ETHER | SC_RSTCTRL_NRST_UMC1 + | SC_RSTCTRL_NRST_UMC0 | SC_RSTCTRL_NRST_NAND; + writel(tmp, SC_RSTCTRL); + readl(SC_RSTCTRL); /* dummy read */ + + /* privide clocks */ + tmp = readl(SC_CLKCTRL); + tmp |= SC_CLKCTRL_CLK_ETHER | SC_CLKCTRL_CLK_MIO | SC_CLKCTRL_CLK_UMC + | SC_CLKCTRL_CLK_NAND | SC_CLKCTRL_CLK_SBC | SC_CLKCTRL_CLK_PERI; + writel(tmp, SC_CLKCTRL); + readl(SC_CLKCTRL); /* dummy read */ +} |