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f77d4410 PF |
1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* | |
3 | * Copyright 2018 NXP | |
4 | * Peng Fan <peng.fan@nxp.com> | |
5 | */ | |
6 | ||
d678a59d | 7 | #include <common.h> |
f77d4410 PF |
8 | #include <clk-uclass.h> |
9 | #include <dm.h> | |
f7ae49fc | 10 | #include <log.h> |
336d4615 | 11 | #include <malloc.h> |
99ac6c76 | 12 | #include <firmware/imx/sci/sci.h> |
f77d4410 PF |
13 | #include <asm/arch/clock.h> |
14 | #include <dt-bindings/clock/imx8qxp-clock.h> | |
15 | #include <dt-bindings/soc/imx_rsrc.h> | |
16 | #include <misc.h> | |
17 | ||
98c63a78 | 18 | #include "clk-imx8.h" |
f77d4410 | 19 | |
98c63a78 | 20 | __weak ulong imx8_clk_get_rate(struct clk *clk) |
f77d4410 | 21 | { |
98c63a78 | 22 | return 0; |
f77d4410 PF |
23 | } |
24 | ||
98c63a78 | 25 | __weak ulong imx8_clk_set_rate(struct clk *clk, unsigned long rate) |
f77d4410 | 26 | { |
98c63a78 | 27 | return 0; |
f77d4410 PF |
28 | } |
29 | ||
98c63a78 | 30 | __weak int __imx8_clk_enable(struct clk *clk, bool enable) |
f77d4410 | 31 | { |
9042bf6f | 32 | return -EINVAL; |
f77d4410 PF |
33 | } |
34 | ||
35 | static int imx8_clk_disable(struct clk *clk) | |
36 | { | |
37 | return __imx8_clk_enable(clk, 0); | |
38 | } | |
39 | ||
40 | static int imx8_clk_enable(struct clk *clk) | |
41 | { | |
42 | return __imx8_clk_enable(clk, 1); | |
43 | } | |
44 | ||
8dd86205 | 45 | #if IS_ENABLED(CONFIG_CMD_CLK) |
bc3e313f | 46 | static void imx8_clk_dump(struct udevice *dev) |
f77d4410 | 47 | { |
f77d4410 PF |
48 | struct clk clk; |
49 | unsigned long rate; | |
50 | int i, ret; | |
51 | ||
f77d4410 PF |
52 | printf("Clk\t\tHz\n"); |
53 | ||
98c63a78 | 54 | for (i = 0; i < num_clks; i++) { |
f77d4410 PF |
55 | clk.id = imx8_clk_names[i].id; |
56 | ret = clk_request(dev, &clk); | |
57 | if (ret < 0) { | |
58 | debug("%s clk_request() failed: %d\n", __func__, ret); | |
59 | continue; | |
60 | } | |
61 | ||
62 | ret = clk_get_rate(&clk); | |
63 | rate = ret; | |
64 | ||
9042bf6f | 65 | if (ret == -EINVAL) { |
f77d4410 PF |
66 | printf("clk ID %lu not supported yet\n", |
67 | imx8_clk_names[i].id); | |
68 | continue; | |
69 | } | |
70 | if (ret < 0) { | |
71 | printf("%s %lu: get_rate err: %d\n", | |
72 | __func__, imx8_clk_names[i].id, ret); | |
73 | continue; | |
74 | } | |
75 | ||
76 | printf("%s(%3lu):\t%lu\n", | |
77 | imx8_clk_names[i].name, imx8_clk_names[i].id, rate); | |
78 | } | |
f77d4410 PF |
79 | } |
80 | #endif | |
81 | ||
82 | static struct clk_ops imx8_clk_ops = { | |
83 | .set_rate = imx8_clk_set_rate, | |
84 | .get_rate = imx8_clk_get_rate, | |
85 | .enable = imx8_clk_enable, | |
86 | .disable = imx8_clk_disable, | |
bc3e313f IP |
87 | #if IS_ENABLED(CONFIG_CMD_CLK) |
88 | .dump = imx8_clk_dump, | |
89 | #endif | |
f77d4410 PF |
90 | }; |
91 | ||
92 | static int imx8_clk_probe(struct udevice *dev) | |
93 | { | |
94 | return 0; | |
95 | } | |
96 | ||
97 | static const struct udevice_id imx8_clk_ids[] = { | |
98 | { .compatible = "fsl,imx8qxp-clk" }, | |
e45efe90 | 99 | { .compatible = "fsl,imx8qm-clk" }, |
f77d4410 PF |
100 | { }, |
101 | }; | |
102 | ||
103 | U_BOOT_DRIVER(imx8_clk) = { | |
104 | .name = "clk_imx8", | |
105 | .id = UCLASS_CLK, | |
106 | .of_match = imx8_clk_ids, | |
107 | .ops = &imx8_clk_ops, | |
108 | .probe = imx8_clk_probe, | |
109 | .flags = DM_FLAG_PRE_RELOC, | |
110 | }; |