1 // SPDX-License-Identifier: GPL-2.0-only
3  * Clock definitions for u8500 platform.
5  * Copyright (C) 2012 ST-Ericsson SA
11 #include <linux/clk-provider.h>
12 #include <linux/mfd/dbx500-prcmu.h>
16 #include "reset-prcc.h"
35 	if (clkspec->args_count != 2)  in ux500_twocell_get()
36 		return  ERR_PTR(-EINVAL);  in ux500_twocell_get()
38 	base = clkspec->args[0];  in ux500_twocell_get()
39 	bit = clkspec->args[1];  in ux500_twocell_get()
43 		return ERR_PTR(-EINVAL);  in ux500_twocell_get()
78 	struct clk_hw *clkout;  in ux500_clkout_get()  local
80 	if (clkspec->args_count != 3)  in ux500_clkout_get()
81 		return  ERR_PTR(-EINVAL);  in ux500_clkout_get()
83 	id = clkspec->args[0];  in ux500_clkout_get()
84 	source = clkspec->args[1];  in ux500_clkout_get()
85 	divider = clkspec->args[2];  in ux500_clkout_get()
88 		pr_err("%s: invalid clkout ID %d\n", __func__, id);  in ux500_clkout_get()
89 		return ERR_PTR(-EINVAL);  in ux500_clkout_get()
93 		pr_info("%s: clkout%d already registered, not reconfiguring\n",  in ux500_clkout_get()
100 		return ERR_PTR(-EINVAL);  in ux500_clkout_get()
105 		return ERR_PTR(-EINVAL);  in ux500_clkout_get()
108 	pr_debug("registering clkout%d with source %d and divider %d\n",  in ux500_clkout_get()
111 	clkout = clk_reg_prcmu_clkout(id ? "clkout2" : "clkout1",  in ux500_clkout_get()
115 	if (IS_ERR(clkout)) {  in ux500_clkout_get()
116 		pr_err("failed to register clkout%d\n",  id + 1);  in ux500_clkout_get()
117 		return ERR_CAST(clkout);  in ux500_clkout_get()
120 	clkout_clk[id] = clkout;  in ux500_clkout_get()
122 	return clkout;  in ux500_clkout_get()
152 		rstc->phy_base[i] = r.start;  in u8500_clk_init()
155 	/* Clock sources */  in u8500_clk_init()
169 	 * Read-only clocks that only return their current rate, only used  in u8500_clk_init()
171 	 * clk38m_to_clkgen is the same as the SYSCLK, i.e. the root clock.  in u8500_clk_init()
187 		switch (fw_version->project) {  in u8500_clk_init()
302 	/* PRCC P-clocks */  in u8500_clk_init()
479 	/* PRCC K-clocks  in u8500_clk_init()
482 	 * by enabling just the K-clock, even if it is not a valid parent to  in u8500_clk_init()
483 	 * the K-clock. Until drivers get fixed we might need some kind of  in u8500_clk_init()
595 		if (of_node_name_eq(child, "prcmu-clock"))  in u8500_clk_init()
599 		if (of_node_name_eq(child, "clkout-clock"))  in u8500_clk_init()
602 		if (of_node_name_eq(child, "prcc-periph-clock"))  in u8500_clk_init()
605 		if (of_node_name_eq(child, "prcc-kernel-clock"))  in u8500_clk_init()
608 		if (of_node_name_eq(child, "rtc32k-clock"))  in u8500_clk_init()
611 		if (of_node_name_eq(child, "smp-twd-clock"))  in u8500_clk_init()
614 		if (of_node_name_eq(child, "prcc-reset-controller"))  in u8500_clk_init()
618 CLK_OF_DECLARE(u8500_clks, "stericsson,u8500-clks", u8500_clk_init);