| Masahiro Yamada | ddb1900 | 2017-01-15 14:59:03 +0900 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2011-2014 Panasonic Corporation |
| 3 | * Copyright (C) 2015-2017 Socionext Inc. |
| 4 | * |
| 5 | * SPDX-License-Identifier: GPL-2.0+ |
| 6 | */ |
| 7 | |
| 8 | #include <common.h> |
| 9 | #include <spl.h> |
| 10 | #include <linux/io.h> |
| 11 | |
| 12 | #include "../init.h" |
| 13 | #include "../sc-regs.h" |
| 14 | |
| 15 | void uniphier_sld3_dram_clk_init(void) |
| 16 | { |
| 17 | u32 tmp; |
| 18 | |
| 19 | /* deassert reset */ |
| 20 | tmp = readl(SC_RSTCTRL); |
| 21 | tmp |= SC_RSTCTRL_NRST_UMC1 | SC_RSTCTRL_NRST_UMC0; |
| 22 | writel(tmp, SC_RSTCTRL); |
| 23 | readl(SC_RSTCTRL); /* dummy read */ |
| 24 | |
| 25 | /* provide clocks */ |
| 26 | tmp = readl(SC_CLKCTRL); |
| 27 | tmp |= SC_CLKCTRL_CEN_UMC; |
| 28 | writel(tmp, SC_CLKCTRL); |
| 29 | readl(SC_CLKCTRL); /* dummy read */ |
| 30 | } |