xref: /openbmc/u-boot/drivers/misc/stm32_rcc.c (revision e0ed8332)
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Copyright (C) 2017, STMicroelectronics - All Rights Reserved
4  * Author(s): Patrice Chotard, <patrice.chotard@st.com> for STMicroelectronics.
5  */
6 
7 #include <common.h>
8 #include <dm.h>
9 #include <misc.h>
10 #include <stm32_rcc.h>
11 #include <dm/device-internal.h>
12 #include <dm/lists.h>
13 
14 struct stm32_rcc_clk stm32_rcc_clk_f42x = {
15 	.drv_name = "stm32fx_rcc_clock",
16 	.soc = STM32F42X,
17 };
18 
19 struct stm32_rcc_clk stm32_rcc_clk_f469 = {
20 	.drv_name = "stm32fx_rcc_clock",
21 	.soc = STM32F469,
22 };
23 
24 struct stm32_rcc_clk stm32_rcc_clk_f7 = {
25 	.drv_name = "stm32fx_rcc_clock",
26 	.soc = STM32F7,
27 };
28 
29 struct stm32_rcc_clk stm32_rcc_clk_h7 = {
30 	.drv_name = "stm32h7_rcc_clock",
31 };
32 
33 struct stm32_rcc_clk stm32_rcc_clk_mp1 = {
34 	.drv_name = "stm32mp1_clk",
35 	.soc = STM32MP1,
36 };
37 
stm32_rcc_bind(struct udevice * dev)38 static int stm32_rcc_bind(struct udevice *dev)
39 {
40 	struct udevice *child;
41 	struct driver *drv;
42 	struct stm32_rcc_clk *rcc_clk =
43 		(struct stm32_rcc_clk *)dev_get_driver_data(dev);
44 	int ret;
45 
46 	debug("%s(dev=%p)\n", __func__, dev);
47 	drv = lists_driver_lookup_name(rcc_clk->drv_name);
48 	if (!drv) {
49 		debug("Cannot find driver '%s'\n", rcc_clk->drv_name);
50 		return -ENOENT;
51 	}
52 
53 	ret = device_bind_with_driver_data(dev, drv, rcc_clk->drv_name,
54 					   rcc_clk->soc,
55 					   dev_ofnode(dev), &child);
56 
57 	if (ret)
58 		return ret;
59 
60 	drv = lists_driver_lookup_name("stm32_rcc_reset");
61 	if (!drv) {
62 		dev_err(dev, "Cannot find driver stm32_rcc_reset'\n");
63 		return -ENOENT;
64 	}
65 
66 	return device_bind_with_driver_data(dev, drv, "stm32_rcc_reset",
67 					    rcc_clk->soc,
68 					    dev_ofnode(dev), &child);
69 }
70 
71 static const struct misc_ops stm32_rcc_ops = {
72 };
73 
74 static const struct udevice_id stm32_rcc_ids[] = {
75 	{.compatible = "st,stm32f42xx-rcc", .data = (ulong)&stm32_rcc_clk_f42x },
76 	{.compatible = "st,stm32f469-rcc", .data = (ulong)&stm32_rcc_clk_f469 },
77 	{.compatible = "st,stm32f746-rcc", .data = (ulong)&stm32_rcc_clk_f7 },
78 	{.compatible = "st,stm32h743-rcc", .data = (ulong)&stm32_rcc_clk_h7 },
79 	{.compatible = "st,stm32mp1-rcc", .data = (ulong)&stm32_rcc_clk_mp1 },
80 	{ }
81 };
82 
83 U_BOOT_DRIVER(stm32_rcc) = {
84 	.name		= "stm32-rcc",
85 	.id		= UCLASS_MISC,
86 	.of_match	= stm32_rcc_ids,
87 	.bind		= stm32_rcc_bind,
88 	.ops		= &stm32_rcc_ops,
89 };
90