1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (C) 2019 DENX Software Engineering
4 * Lukasz Majewski, DENX Software Engineering, lukma@denx.de
6 * Copyright (C) 2011 Sascha Hauer, Pengutronix <s.hauer@pengutronix.de>
10 #include <clk-uclass.h>
11 #include <dm/device.h>
12 #include <linux/clk-provider.h>
17 #define UBOOT_DM_CLK_IMX_FIXED_FACTOR "ccf_clk_fixed_factor"
19 static ulong clk_factor_recalc_rate(struct clk *clk)
21 struct clk_fixed_factor *fix =
22 to_clk_fixed_factor(dev_get_clk_ptr(clk->dev));
23 unsigned long parent_rate = clk_get_parent_rate(clk);
24 unsigned long long int rate;
26 rate = (unsigned long long int)parent_rate * fix->mult;
27 do_div(rate, fix->div);
31 const struct clk_ops ccf_clk_fixed_factor_ops = {
32 .get_rate = clk_factor_recalc_rate,
35 struct clk *clk_hw_register_fixed_factor(struct device *dev,
36 const char *name, const char *parent_name, unsigned long flags,
37 unsigned int mult, unsigned int div)
39 struct clk_fixed_factor *fix;
43 fix = kzalloc(sizeof(*fix), GFP_KERNEL);
45 return ERR_PTR(-ENOMEM);
47 /* struct clk_fixed_factor assignments */
52 ret = clk_register(clk, UBOOT_DM_CLK_IMX_FIXED_FACTOR, name,
62 struct clk *clk_register_fixed_factor(struct device *dev, const char *name,
63 const char *parent_name, unsigned long flags,
64 unsigned int mult, unsigned int div)
68 clk = clk_hw_register_fixed_factor(dev, name, parent_name, flags, mult,
75 U_BOOT_DRIVER(imx_clk_fixed_factor) = {
76 .name = UBOOT_DM_CLK_IMX_FIXED_FACTOR,
78 .ops = &ccf_clk_fixed_factor_ops,
79 .flags = DM_FLAG_PRE_RELOC,