1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2019 DENX Software Engineering
4 * Lukasz Majewski, DENX Software Engineering, lukma@denx.de
10 #include <clk-uclass.h>
11 #include <dm/device.h>
12 #include <dm/uclass.h>
16 #define UBOOT_DM_CLK_IMX_PLLV3 "imx_clk_pllv3"
25 #define to_clk_pllv3(_clk) container_of(_clk, struct clk_pllv3, clk)
27 static ulong clk_pllv3_get_rate(struct clk *clk)
29 struct clk_pllv3 *pll = to_clk_pllv3(dev_get_clk_ptr(clk->dev));
30 unsigned long parent_rate = clk_get_parent_rate(clk);
32 u32 div = (readl(pll->base) >> pll->div_shift) & pll->div_mask;
34 return (div == 1) ? parent_rate * 22 : parent_rate * 20;
37 static const struct clk_ops clk_pllv3_generic_ops = {
38 .get_rate = clk_pllv3_get_rate,
41 struct clk *imx_clk_pllv3(enum imx_pllv3_type type, const char *name,
42 const char *parent_name, void __iomem *base,
45 struct clk_pllv3 *pll;
50 pll = kzalloc(sizeof(*pll), GFP_KERNEL);
52 return ERR_PTR(-ENOMEM);
55 case IMX_PLLV3_GENERIC:
57 drv_name = UBOOT_DM_CLK_IMX_PLLV3;
61 return ERR_PTR(-ENOTSUPP);
65 pll->div_mask = div_mask;
68 ret = clk_register(clk, drv_name, name, parent_name);
77 U_BOOT_DRIVER(clk_pllv3_generic) = {
78 .name = UBOOT_DM_CLK_IMX_PLLV3,
80 .ops = &clk_pllv3_generic_ops,
81 .flags = DM_FLAG_PRE_RELOC,