| Masahiro Yamada | 28f40d4 | 2015-09-22 00:27:40 +0900 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2015 Masahiro Yamada <yamada.m@jp.panasonic.com> |
| 3 | * |
| 4 | * SPDX-License-Identifier: GPL-2.0+ |
| 5 | */ |
| 6 | |
| 7 | #include <linux/io.h> |
| Masahiro Yamada | 107b3fb | 2016-01-09 01:51:13 +0900 | [diff] [blame] | 8 | |
| 9 | #include "../init.h" |
| 10 | #include "../sc-regs.h" |
| Masahiro Yamada | 28f40d4 | 2015-09-22 00:27:40 +0900 | [diff] [blame] | 11 | |
| Masahiro Yamada | 5b66006 | 2016-03-30 20:17:02 +0900 | [diff] [blame] | 12 | int uniphier_pro5_early_clk_init(const struct uniphier_board_data *bd) |
| Masahiro Yamada | 28f40d4 | 2015-09-22 00:27:40 +0900 | [diff] [blame] | 13 | { |
| 14 | u32 tmp; |
| 15 | |
| 16 | /* |
| 17 | * deassert reset |
| 18 | * UMCA2: Ch1 (DDR3) |
| 19 | * UMCA1, UMC31: Ch0 (WIO1) |
| 20 | * UMCA0, UMC30: Ch0 (WIO0) |
| 21 | */ |
| 22 | tmp = readl(SC_RSTCTRL4); |
| 23 | tmp |= SC_RSTCTRL4_NRST_UMCSB | SC_RSTCTRL4_NRST_UMCA2 | |
| 24 | SC_RSTCTRL4_NRST_UMCA1 | SC_RSTCTRL4_NRST_UMCA0 | |
| 25 | SC_RSTCTRL4_NRST_UMC31 | SC_RSTCTRL4_NRST_UMC30; |
| 26 | writel(tmp, SC_RSTCTRL4); |
| 27 | readl(SC_RSTCTRL); /* dummy read */ |
| 28 | |
| Masahiro Yamada | 6797630 | 2016-03-30 20:17:42 +0900 | [diff] [blame] | 29 | /* provide clocks */ |
| Masahiro Yamada | 28f40d4 | 2015-09-22 00:27:40 +0900 | [diff] [blame] | 30 | tmp = readl(SC_CLKCTRL); |
| 31 | tmp |= SC_CLKCTRL_CEN_SBC | SC_CLKCTRL_CEN_PERI; |
| 32 | writel(tmp, SC_CLKCTRL); |
| 33 | tmp = readl(SC_CLKCTRL4); |
| 34 | tmp |= SC_CLKCTRL4_CEN_UMCSB | SC_CLKCTRL4_CEN_UMC1 | |
| 35 | SC_CLKCTRL4_CEN_UMC0; |
| 36 | writel(tmp, SC_CLKCTRL4); |
| 37 | readl(SC_CLKCTRL4); /* dummy read */ |
| 38 | |
| 39 | return 0; |
| 40 | } |