| Masahiro Yamada | c04368f | 2015-02-27 02:26:51 +0900 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2011-2015 Panasonic Corporation |
| 3 | * Author: Masahiro Yamada <yamada.m@jp.panasonic.com> |
| 4 | * |
| 5 | * SPDX-License-Identifier: GPL-2.0+ |
| 6 | */ |
| 7 | |
| Masahiro Yamada | 4b9c6f2 | 2015-02-27 02:26:52 +0900 | [diff] [blame] | 8 | #include <common.h> |
| 9 | #include <spl.h> |
| Masahiro Yamada | c04368f | 2015-02-27 02:26:51 +0900 | [diff] [blame] | 10 | #include <asm/io.h> |
| 11 | #include <mach/sc-regs.h> |
| 12 | |
| 13 | void early_clkrst_init(void) |
| 14 | { |
| 15 | u32 tmp; |
| 16 | |
| 17 | /* deassert reset */ |
| 18 | tmp = readl(SC_RSTCTRL); |
| Masahiro Yamada | 4b9c6f2 | 2015-02-27 02:26:52 +0900 | [diff] [blame] | 19 | |
| Masahiro Yamada | c04368f | 2015-02-27 02:26:51 +0900 | [diff] [blame] | 20 | tmp |= SC_RSTCTRL_NRST_UMC1 | SC_RSTCTRL_NRST_UMC0; |
| Masahiro Yamada | 4b9c6f2 | 2015-02-27 02:26:52 +0900 | [diff] [blame] | 21 | if (spl_boot_device() != BOOT_DEVICE_NAND) |
| 22 | tmp &= ~SC_RSTCTRL_NRST_NAND; |
| Masahiro Yamada | c04368f | 2015-02-27 02:26:51 +0900 | [diff] [blame] | 23 | writel(tmp, SC_RSTCTRL); |
| 24 | readl(SC_RSTCTRL); /* dummy read */ |
| 25 | |
| 26 | /* privide clocks */ |
| 27 | tmp = readl(SC_CLKCTRL); |
| 28 | tmp |= SC_CLKCTRL_CEN_UMC | SC_CLKCTRL_CEN_SBC | SC_CLKCTRL_CEN_PERI; |
| 29 | writel(tmp, SC_CLKCTRL); |
| 30 | readl(SC_CLKCTRL); /* dummy read */ |
| 31 | } |