2 * OMAP clockdomain support
4 * Copyright (C) 2013 Texas Instruments, Inc.
6 * Tero Kristo <t-kristo@ti.com>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
12 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
13 * kind, whether express or implied; without even the implied warranty
14 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
18 #include <linux/clk-provider.h>
19 #include <linux/slab.h>
21 #include <linux/of_address.h>
22 #include <linux/clk/ti.h>
25 #define pr_fmt(fmt) "%s: " fmt, __func__
27 static void __init
of_ti_clockdomain_setup(struct device_node
*node
)
30 struct clk_hw
*clk_hw
;
31 const char *clkdm_name
= node
->name
;
35 num_clks
= of_clk_get_parent_count(node
);
37 for (i
= 0; i
< num_clks
; i
++) {
38 clk
= of_clk_get(node
, i
);
40 pr_err("%s: Failed get %s' clock nr %d (%ld)\n",
41 __func__
, node
->full_name
, i
, PTR_ERR(clk
));
44 if (__clk_get_flags(clk
) & CLK_IS_BASIC
) {
45 pr_warn("can't setup clkdm for basic clk %s\n",
49 clk_hw
= __clk_get_hw(clk
);
50 to_clk_hw_omap(clk_hw
)->clkdm_name
= clkdm_name
;
51 omap2_init_clk_clkdm(clk_hw
);
55 static const struct of_device_id ti_clkdm_match_table
[] __initconst
= {
56 { .compatible
= "ti,clockdomain" },
61 * ti_dt_clockdomains_setup - setup device tree clockdomains
63 * Initializes clockdomain nodes for a SoC. This parses through all the
64 * nodes with compatible = "ti,clockdomain", and add the clockdomain
65 * info for all the clocks listed under these. This function shall be
66 * called after rest of the DT clock init has completed and all
67 * clock nodes have been registered.
69 void __init
ti_dt_clockdomains_setup(void)
71 struct device_node
*np
;
72 for_each_matching_node(np
, ti_clkdm_match_table
) {
73 of_ti_clockdomain_setup(np
);