/* * TI Fixed Factor Clock * * 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/err.h> #include <linux/of.h> #include <linux/of_address.h> #include <linux/clk/ti.h> #include "clock.h" #undef pr_fmt #define pr_fmt(fmt) "%s: " fmt, __func__ /** * of_ti_fixed_factor_clk_setup - Setup function for TI fixed factor clock * @node: device node for this clock * * Sets up a simple fixed factor clock based on device tree info. */ static void __init of_ti_fixed_factor_clk_setup(struct device_node *node) { struct clk *clk; const char *clk_name = ti_dt_clk_name(node); const char *parent_name; u32 div, mult; u32 flags = 0; if (of_property_read_u32(node, "ti,clock-div", &div)) { pr_err("%pOFn must have a clock-div property\n", node); return; } if (of_property_read_u32(node, "ti,clock-mult", &mult)) { pr_err("%pOFn must have a clock-mult property\n", node); return; } if (of_property_read_bool(node, "ti,set-rate-parent")) flags |= CLK_SET_RATE_PARENT; parent_name = of_clk_get_parent_name(node, 0); clk = clk_register_fixed_factor(NULL, clk_name, parent_name, flags, mult, div); if (!IS_ERR(clk)) { of_clk_add_provider(node, of_clk_src_simple_get, clk); of_ti_clk_autoidle_setup(node); ti_clk_add_alias(NULL, clk, clk_name); } } CLK_OF_DECLARE(ti_fixed_factor_clk, "ti,fixed-factor-clock", of_ti_fixed_factor_clk_setup);