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gerrit.devboardsforandroid.linaro.org / platform / external / u-boot / 042b28f436cb52db1a58af93d7159fcb171e3d36 / . / arch / arm / mach-uniphier / clk / clk-ph1-ld4.c
blob: 8b95fbb008a7a03c097ce13a5caa3f23c8102c0c [file] [log] [blame]
Masahiro Yamada5894ca02014-10-03 19:21:06 +0900[diff] [blame]1/*
Masahiro Yamadaf6e7f072015-05-29 17:30:00 +0900[diff] [blame]2 * Copyright (C) 2011-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
Masahiro Yamada5894ca02014-10-03 19:21:06 +0900[diff] [blame]3 *
4 * SPDX-License-Identifier: GPL-2.0+
5 */
6
Masahiro Yamadaf6e7f072015-05-29 17:30:00 +0900[diff] [blame]7#include <linux/io.h>
Masahiro Yamada323d1f92015-09-22 00:27:39 +0900[diff] [blame]8#include <mach/init.h>
Masahiro Yamadaa86ac952015-02-27 02:26:44 +0900[diff] [blame]9#include <mach/sc-regs.h>
Masahiro Yamada5894ca02014-10-03 19:21:06 +0900[diff] [blame]10
Masahiro Yamada323d1f92015-09-22 00:27:39 +0900[diff] [blame]11void ph1_ld4_clk_init(void)
Masahiro Yamada5894ca02014-10-03 19:21:06 +0900[diff] [blame]12{
13 u32 tmp;
14
15 /* deassert reset */
16 tmp = readl(SC_RSTCTRL);
Masahiro Yamada198a97a2015-02-27 02:26:51 +0900[diff] [blame]17#ifdef CONFIG_UNIPHIER_ETH
18 tmp |= SC_RSTCTRL_NRST_ETHER;
19#endif
Masahiro Yamada42ca6982015-02-27 02:26:53 +0900[diff] [blame]20#ifdef CONFIG_USB_EHCI_UNIPHIER
21 tmp |= SC_RSTCTRL_NRST_STDMAC;
22#endif
Masahiro Yamada198a97a2015-02-27 02:26:51 +0900[diff] [blame]23#ifdef CONFIG_NAND_DENALI
24 tmp |= SC_RSTCTRL_NRST_NAND;
25#endif
Masahiro Yamada5894ca02014-10-03 19:21:06 +0900[diff] [blame]26 writel(tmp, SC_RSTCTRL);
27 readl(SC_RSTCTRL); /* dummy read */
28
29 /* privide clocks */
30 tmp = readl(SC_CLKCTRL);
Masahiro Yamada198a97a2015-02-27 02:26:51 +0900[diff] [blame]31#ifdef CONFIG_UNIPHIER_ETH
32 tmp |= SC_CLKCTRL_CEN_ETHER;
33#endif
34#ifdef CONFIG_USB_EHCI_UNIPHIER
Masahiro Yamada42ca6982015-02-27 02:26:53 +0900[diff] [blame]35 tmp |= SC_CLKCTRL_CEN_MIO | SC_CLKCTRL_CEN_STDMAC;
Masahiro Yamada198a97a2015-02-27 02:26:51 +0900[diff] [blame]36#endif
37#ifdef CONFIG_NAND_DENALI
38 tmp |= SC_CLKCTRL_CEN_NAND;
39#endif
Masahiro Yamada5894ca02014-10-03 19:21:06 +0900[diff] [blame]40 writel(tmp, SC_CLKCTRL);
41 readl(SC_CLKCTRL); /* dummy read */
42}