/* * Copyright (C) 2011-2015 Masahiro Yamada <yamada.m@jp.panasonic.com> * * SPDX-License-Identifier: GPL-2.0+ */ #include <common.h> #include <spl.h> #include <linux/io.h> #include <mach/sc-regs.h> void early_clkrst_init(void) { u32 tmp; /* deassert reset */ tmp = readl(SC_RSTCTRL); tmp |= SC_RSTCTRL_NRST_UMC1 | SC_RSTCTRL_NRST_UMC0; if (spl_boot_device() != BOOT_DEVICE_NAND) tmp &= ~SC_RSTCTRL_NRST_NAND; writel(tmp, SC_RSTCTRL); readl(SC_RSTCTRL); /* dummy read */ /* privide clocks */ tmp = readl(SC_CLKCTRL); tmp |= SC_CLKCTRL_CEN_UMC | SC_CLKCTRL_CEN_SBC | SC_CLKCTRL_CEN_PERI; writel(tmp, SC_CLKCTRL); readl(SC_CLKCTRL); /* dummy read */ }