diff options
Diffstat (limited to 'arch/arm/mach-uniphier/ph1-ld4/clkrst_init.c')
| -rw-r--r-- | arch/arm/mach-uniphier/ph1-ld4/clkrst_init.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/arch/arm/mach-uniphier/ph1-ld4/clkrst_init.c b/arch/arm/mach-uniphier/ph1-ld4/clkrst_init.c new file mode 100644 index 0000000000..4ac5411562 --- /dev/null +++ b/arch/arm/mach-uniphier/ph1-ld4/clkrst_init.c @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2011-2015 Panasonic Corporation + * Author: Masahiro Yamada <yamada.m@jp.panasonic.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <asm/io.h> +#include <mach/sc-regs.h> + +void clkrst_init(void) +{ + u32 tmp; + + /* deassert reset */ + tmp = readl(SC_RSTCTRL); +#ifdef CONFIG_UNIPHIER_ETH + tmp |= SC_RSTCTRL_NRST_ETHER; +#endif +#ifdef CONFIG_USB_EHCI_UNIPHIER + tmp |= SC_RSTCTRL_NRST_STDMAC; +#endif +#ifdef CONFIG_NAND_DENALI + tmp |= SC_RSTCTRL_NRST_NAND; +#endif + writel(tmp, SC_RSTCTRL); + readl(SC_RSTCTRL); /* dummy read */ + + /* privide clocks */ + tmp = readl(SC_CLKCTRL); +#ifdef CONFIG_UNIPHIER_ETH + tmp |= SC_CLKCTRL_CEN_ETHER; +#endif +#ifdef CONFIG_USB_EHCI_UNIPHIER + tmp |= SC_CLKCTRL_CEN_MIO | SC_CLKCTRL_CEN_STDMAC; +#endif +#ifdef CONFIG_NAND_DENALI + tmp |= SC_CLKCTRL_CEN_NAND; +#endif + writel(tmp, SC_CLKCTRL); + readl(SC_CLKCTRL); /* dummy read */ +} |