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75 lines
2.1 KiB
75 lines
2.1 KiB
/* |
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* OMAP clockdomain support |
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* |
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* Copyright (C) 2013 Texas Instruments, Inc. |
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* |
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* Tero Kristo <t-kristo@ti.com> |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License version 2 as |
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* published by the Free Software Foundation. |
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* |
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any |
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* kind, whether express or implied; without even the implied warranty |
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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*/ |
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#include <linux/clk-provider.h> |
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#include <linux/slab.h> |
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#include <linux/of.h> |
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#include <linux/of_address.h> |
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#include <linux/clk/ti.h> |
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#undef pr_fmt |
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#define pr_fmt(fmt) "%s: " fmt, __func__ |
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static void __init of_ti_clockdomain_setup(struct device_node *node) |
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{ |
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struct clk *clk; |
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struct clk_hw *clk_hw; |
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const char *clkdm_name = node->name; |
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int i; |
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int num_clks; |
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num_clks = of_count_phandle_with_args(node, "clocks", "#clock-cells"); |
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for (i = 0; i < num_clks; i++) { |
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clk = of_clk_get(node, i); |
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if (IS_ERR(clk)) { |
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pr_err("%s: Failed get %s' clock nr %d (%ld)\n", |
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__func__, node->full_name, i, PTR_ERR(clk)); |
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continue; |
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} |
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if (__clk_get_flags(clk) & CLK_IS_BASIC) { |
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pr_warn("can't setup clkdm for basic clk %s\n", |
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__clk_get_name(clk)); |
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continue; |
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} |
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clk_hw = __clk_get_hw(clk); |
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to_clk_hw_omap(clk_hw)->clkdm_name = clkdm_name; |
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omap2_init_clk_clkdm(clk_hw); |
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} |
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} |
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static struct of_device_id ti_clkdm_match_table[] __initdata = { |
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{ .compatible = "ti,clockdomain" }, |
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{ } |
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}; |
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/** |
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* ti_dt_clockdomains_setup - setup device tree clockdomains |
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* |
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* Initializes clockdomain nodes for a SoC. This parses through all the |
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* nodes with compatible = "ti,clockdomain", and add the clockdomain |
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* info for all the clocks listed under these. This function shall be |
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* called after rest of the DT clock init has completed and all |
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* clock nodes have been registered. |
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*/ |
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void __init ti_dt_clockdomains_setup(void) |
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{ |
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struct device_node *np; |
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for_each_matching_node(np, ti_clkdm_match_table) { |
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of_ti_clockdomain_setup(np); |
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} |
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}
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