1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * arch/sh/kernel/cpu/clock.c - SuperH clock framework
4 *
5 * Copyright (C) 2005 - 2009 Paul Mundt
6 *
7 * This clock framework is derived from the OMAP version by:
8 *
9 * Copyright (C) 2004 - 2008 Nokia Corporation
10 * Written by Tuukka Tikkanen <tuukka.tikkanen@elektrobit.com>
11 *
12 * Modified for omap shared clock framework by Tony Lindgren <tony@atomide.com>
13 */
14 #include <linux/kernel.h>
15 #include <linux/init.h>
16 #include <linux/clk.h>
17 #include <asm/clock.h>
18 #include <asm/machvec.h>
19
20 int __init clk_init(void)
21 {
22 int ret;
23
24 #ifndef CONFIG_COMMON_CLK
25 ret = arch_clk_init();
26 if (unlikely(ret)) {
27 pr_err("%s: CPU clock registration failed.\n", __func__);
28 return ret;
29 }
30 #endif
31
32 if (sh_mv.mv_clk_init) {
33 ret = sh_mv.mv_clk_init();
34 if (unlikely(ret)) {
35 pr_err("%s: machvec clock initialization failed.\n",
36 __func__);
37 return ret;
38 }
39 }
40
41 #ifndef CONFIG_COMMON_CLK
42 /* Kick the child clocks.. */
43 recalculate_root_clocks();
44
45 /* Enable the necessary init clocks */
46 clk_enable_init_clocks();
47 #endif
48
49 return ret;
50 }
51
52
53
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