diff options
Diffstat (limited to 'roms/u-boot/arch/arm/mach-uniphier/clk/clk-pro4.c')
| -rw-r--r-- | roms/u-boot/arch/arm/mach-uniphier/clk/clk-pro4.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/roms/u-boot/arch/arm/mach-uniphier/clk/clk-pro4.c b/roms/u-boot/arch/arm/mach-uniphier/clk/clk-pro4.c new file mode 100644 index 000000000..798128b30 --- /dev/null +++ b/roms/u-boot/arch/arm/mach-uniphier/clk/clk-pro4.c @@ -0,0 +1,37 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2011-2015 Panasonic Corporation + * Copyright (C) 2015-2016 Socionext Inc. + * Author: Masahiro Yamada <yamada.masahiro@socionext.com> + */ + +#include <linux/io.h> + +#include "../init.h" +#include "../sc-regs.h" + +void uniphier_pro4_clk_init(void) +{ +#ifdef CONFIG_USB_DWC3_UNIPHIER + u32 tmp; + + /* deassert reset */ + tmp = readl(sc_base + SC_RSTCTRL); + tmp |= SC_RSTCTRL_NRST_USB3B0 | SC_RSTCTRL_NRST_USB3C0 | + SC_RSTCTRL_NRST_GIO; + writel(tmp, sc_base + SC_RSTCTRL); + readl(sc_base + SC_RSTCTRL); /* dummy read */ + + tmp = readl(sc_base + SC_RSTCTRL2); + tmp |= SC_RSTCTRL2_NRST_USB3B1 | SC_RSTCTRL2_NRST_USB3C1; + writel(tmp, sc_base + SC_RSTCTRL2); + readl(sc_base + SC_RSTCTRL2); /* dummy read */ + + /* provide clocks */ + tmp = readl(sc_base + SC_CLKCTRL); + tmp |= SC_CLKCTRL_CEN_USB31 | SC_CLKCTRL_CEN_USB30 | + SC_CLKCTRL_CEN_GIO; + writel(tmp, sc_base + SC_CLKCTRL); + readl(sc_base + SC_CLKCTRL); /* dummy read */ +#endif +} |