| 12345678910111213141516171819202122232425262728293031323334 |
- /*
- * 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 "../init.h"
- #include "../sc-regs.h"
- int uniphier_ld4_early_clk_init(const struct uniphier_board_data *bd)
- {
- 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 */
- /* provide 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 */
- return 0;
- }
|
