2 * Copyright (C) 2015 Masahiro Yamada <yamada.masahiro@socionext.com>
4 * SPDX-License-Identifier: GPL-2.0+
12 #include "../sc-regs.h"
14 int uniphier_pxs2_early_clk_init(const struct uniphier_board_data *bd)
19 if (spl_boot_device() != BOOT_DEVICE_NAND) {
20 tmp = readl(SC_RSTCTRL);
21 tmp &= ~SC_RSTCTRL_NRST_NAND;
22 writel(tmp, SC_RSTCTRL);
25 tmp = readl(SC_RSTCTRL4);
26 tmp |= SC_RSTCTRL4_NRST_UMCSB | SC_RSTCTRL4_NRST_UMCA2 |
27 SC_RSTCTRL4_NRST_UMCA1 | SC_RSTCTRL4_NRST_UMCA0 |
28 SC_RSTCTRL4_NRST_UMC32 | SC_RSTCTRL4_NRST_UMC31 |
29 SC_RSTCTRL4_NRST_UMC30;
30 writel(tmp, SC_RSTCTRL4);
31 readl(SC_RSTCTRL4); /* dummy read */
34 tmp = readl(SC_CLKCTRL);
35 tmp |= SC_CLKCTRL_CEN_SBC | SC_CLKCTRL_CEN_PERI;
36 writel(tmp, SC_CLKCTRL);
38 tmp = readl(SC_CLKCTRL4);
39 tmp |= SC_CLKCTRL4_CEN_UMCSB | SC_CLKCTRL4_CEN_UMC2 |
40 SC_CLKCTRL4_CEN_UMC1 | SC_CLKCTRL4_CEN_UMC0;
41 writel(tmp, SC_CLKCTRL4);
42 readl(SC_CLKCTRL4); /* dummy read */