u-boot/arch/arm/mach-uniphier/clk/clk-ld4.c

44 lines
861 B
C
Raw Normal View History

/*
* Copyright (C) 2011-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <linux/io.h>
#include "../init.h"
#include "../sc-regs.h"
void uniphier_ld4_clk_init(void)
{
u32 tmp;
/* deassert reset */
tmp = readl(SC_RSTCTRL);
#ifdef CONFIG_UNIPHIER_ETH
tmp |= SC_RSTCTRL_NRST_ETHER;
#endif
#ifdef CONFIG_USB_EHCI
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 */
/* provide clocks */
tmp = readl(SC_CLKCTRL);
#ifdef CONFIG_UNIPHIER_ETH
tmp |= SC_CLKCTRL_CEN_ETHER;
#endif
#ifdef CONFIG_USB_EHCI
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 */
}