blob: 75eaab7d290c4781723778d276f83021d707b125 [file] [log] [blame]
/*
* Copyright (C) 2016-2017 Socionext Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <spl.h>
#include <linux/io.h>
#include "../init.h"
#include "../sc-regs.h"
void uniphier_pxs2_dram_clk_init(void)
{
u32 tmp;
/* deassert reset */
tmp = readl(SC_RSTCTRL4);
tmp |= SC_RSTCTRL4_NRST_UMCSB | SC_RSTCTRL4_NRST_UMCA2 |
SC_RSTCTRL4_NRST_UMCA1 | SC_RSTCTRL4_NRST_UMCA0 |
SC_RSTCTRL4_NRST_UMC32 | SC_RSTCTRL4_NRST_UMC31 |
SC_RSTCTRL4_NRST_UMC30;
writel(tmp, SC_RSTCTRL4);
readl(SC_RSTCTRL4); /* dummy read */
/* provide clocks */
tmp = readl(SC_CLKCTRL4);
tmp |= SC_CLKCTRL4_CEN_UMCSB | SC_CLKCTRL4_CEN_UMC2 |
SC_CLKCTRL4_CEN_UMC1 | SC_CLKCTRL4_CEN_UMC0;
writel(tmp, SC_CLKCTRL4);
readl(SC_CLKCTRL4); /* dummy read */
}