1 // SPDX-License-Identifier: GPL-2.0-or-later
3  *  Copyright 2011-2012 Calxeda, Inc.
4  *  Copyright (C) 2012-2013 Altera Corporation <www.altera.com>
6  * Based from clk-highbank.c
9 #include <linux/clk-provider.h>
94 	if (socfpgaclk->fixed_div)  in socfpga_clk_get_div()
95 		div = socfpgaclk->fixed_div;  in socfpga_clk_get_div()
96 	else if (socfpgaclk->div_reg) {  in socfpga_clk_get_div()
97 		val = readl(socfpgaclk->div_reg) >> socfpgaclk->shift;  in socfpga_clk_get_div()
98 		val &= GENMASK(socfpgaclk->width - 1, 0);  in socfpga_clk_get_div()
100 		if ((uintptr_t) socfpgaclk->div_reg & SOCFPGA_GPIO_DB_CLK_OFFSET)  in socfpga_clk_get_div()
125 	req->rate = req->best_parent_rate / div;  in socfpga_clk_determine_rate()
144 	const char *clk_name = node->name;  in socfpga_gate_init()
158 	rc = of_property_read_u32_array(node, "clk-gate", clk_gate, 2);  in socfpga_gate_init()
163 		socfpga_clk->hw.reg = clk_mgr_base_addr + clk_gate[0];  in socfpga_gate_init()
164 		socfpga_clk->hw.bit_idx = clk_gate[1];  in socfpga_gate_init()
166 		ops->enable = clk_gate_ops.enable;  in socfpga_gate_init()
167 		ops->disable = clk_gate_ops.disable;  in socfpga_gate_init()
170 	rc = of_property_read_u32(node, "fixed-divider", &fixed_div);  in socfpga_gate_init()
172 		socfpga_clk->fixed_div = 0;  in socfpga_gate_init()
174 		socfpga_clk->fixed_div = fixed_div;  in socfpga_gate_init()
176 	rc = of_property_read_u32_array(node, "div-reg", div_reg, 3);  in socfpga_gate_init()
178 		socfpga_clk->div_reg = clk_mgr_base_addr + div_reg[0];  in socfpga_gate_init()
179 		socfpga_clk->shift = div_reg[1];  in socfpga_gate_init()
180 		socfpga_clk->width = div_reg[2];  in socfpga_gate_init()
182 		socfpga_clk->div_reg = NULL;  in socfpga_gate_init()
185 	of_property_read_string(node, "clock-output-names", &clk_name);  in socfpga_gate_init()
193 		ops->get_parent = NULL;  in socfpga_gate_init()
194 		ops->set_parent = NULL;  in socfpga_gate_init()
198 	socfpga_clk->hw.hw.init = &init;  in socfpga_gate_init()
200 	hw_clk = &socfpga_clk->hw.hw;  in socfpga_gate_init()