// SPDX-License-Identifier: GPL-2.0+ | |
/* | |
* Copyright (C) 2011-2014 Panasonic Corporation | |
* Copyright (C) 2015-2017 Socionext Inc. | |
*/ | |
#include <spl.h> | |
#include <linux/io.h> | |
#include "../init.h" | |
#include "../sc-regs.h" | |
void uniphier_ld4_dram_clk_init(void) | |
{ | |
u32 tmp; | |
/* deassert reset */ | |
tmp = readl(sc_base + SC_RSTCTRL); | |
tmp |= SC_RSTCTRL_NRST_UMC1 | SC_RSTCTRL_NRST_UMC0; | |
writel(tmp, sc_base + SC_RSTCTRL); | |
readl(sc_base + SC_RSTCTRL); /* dummy read */ | |
/* provide clocks */ | |
tmp = readl(sc_base + SC_CLKCTRL); | |
tmp |= SC_CLKCTRL_CEN_UMC; | |
writel(tmp, sc_base + SC_CLKCTRL); | |
readl(sc_base + SC_CLKCTRL); /* dummy read */ | |
} |