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