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https://github.com/brain-hackers/u-boot-brain
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739ba41d5a
The SC_* macros represent the address of SysCtrl registers. For a planned new SoC, its base address will be changed. Turn the SC_* macros into the offset from the base address. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
31 lines
666 B
C
31 lines
666 B
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2011-2014 Panasonic Corporation
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* Copyright (C) 2015-2017 Socionext Inc.
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*/
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#include <common.h>
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#include <spl.h>
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#include <linux/io.h>
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#include "../init.h"
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#include "../sc-regs.h"
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void uniphier_ld4_early_clk_init(void)
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{
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u32 tmp;
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/* deassert reset */
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if (spl_boot_device() != BOOT_DEVICE_NAND) {
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tmp = readl(sc_base + SC_RSTCTRL);
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tmp &= ~SC_RSTCTRL_NRST_NAND;
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writel(tmp, sc_base + SC_RSTCTRL);
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};
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/* provide clocks */
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tmp = readl(sc_base + SC_CLKCTRL);
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tmp |= SC_CLKCTRL_CEN_SBC | SC_CLKCTRL_CEN_PERI;
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writel(tmp, sc_base + SC_CLKCTRL);
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readl(sc_base + SC_CLKCTRL); /* dummy read */
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}
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