1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* |
3 | * Copyright (c) 2021 MediaTek Inc. |
4 | * Author: Sam Shih <sam.shih@mediatek.com> |
5 | * Author: Wenzhen Yu <wenzhen.yu@mediatek.com> |
6 | * Author: Jianhui Zhao <zhaojh329@gmail.com> |
7 | * Author: Daniel Golle <daniel@makrotopia.org> |
8 | */ |
9 | |
10 | #include <linux/clk-provider.h> |
11 | #include <linux/mod_devicetable.h> |
12 | #include <linux/platform_device.h> |
13 | |
14 | #include "clk-gate.h" |
15 | #include "clk-mtk.h" |
16 | #include "clk-mux.h" |
17 | #include "clk-pll.h" |
18 | |
19 | #include <dt-bindings/clock/mediatek,mt7981-clk.h> |
20 | #include <linux/clk.h> |
21 | |
22 | #define MT7981_PLL_FMAX (2500UL * MHZ) |
23 | #define CON0_MT7981_RST_BAR BIT(27) |
24 | |
25 | #define PLL_xtal(_id, _name, _reg, _pwr_reg, _en_mask, _flags, _pcwbits, \ |
26 | _pd_reg, _pd_shift, _tuner_reg, _pcw_reg, _pcw_shift, \ |
27 | _div_table, _parent_name) \ |
28 | { \ |
29 | .id = _id, .name = _name, .reg = _reg, .pwr_reg = _pwr_reg, \ |
30 | .en_mask = _en_mask, .flags = _flags, \ |
31 | .rst_bar_mask = CON0_MT7981_RST_BAR, .fmax = MT7981_PLL_FMAX, \ |
32 | .pcwbits = _pcwbits, .pd_reg = _pd_reg, .pd_shift = _pd_shift, \ |
33 | .tuner_reg = _tuner_reg, .pcw_reg = _pcw_reg, \ |
34 | .pcw_shift = _pcw_shift, .div_table = _div_table, \ |
35 | .parent_name = _parent_name, \ |
36 | } |
37 | |
38 | #define PLL(_id, _name, _reg, _pwr_reg, _en_mask, _flags, _pcwbits, _pd_reg, \ |
39 | _pd_shift, _tuner_reg, _pcw_reg, _pcw_shift) \ |
40 | PLL_xtal(_id, _name, _reg, _pwr_reg, _en_mask, _flags, _pcwbits, \ |
41 | _pd_reg, _pd_shift, _tuner_reg, _pcw_reg, _pcw_shift, NULL, \ |
42 | "clkxtal") |
43 | |
44 | static const struct mtk_pll_data plls[] = { |
45 | PLL(CLK_APMIXED_ARMPLL, "armpll" , 0x0200, 0x020C, 0x00000001, PLL_AO, |
46 | 32, 0x0200, 4, 0, 0x0204, 0), |
47 | PLL(CLK_APMIXED_NET2PLL, "net2pll" , 0x0210, 0x021C, 0x00000001, 0, 32, |
48 | 0x0210, 4, 0, 0x0214, 0), |
49 | PLL(CLK_APMIXED_MMPLL, "mmpll" , 0x0220, 0x022C, 0x00000001, 0, 32, |
50 | 0x0220, 4, 0, 0x0224, 0), |
51 | PLL(CLK_APMIXED_SGMPLL, "sgmpll" , 0x0230, 0x023C, 0x00000001, 0, 32, |
52 | 0x0230, 4, 0, 0x0234, 0), |
53 | PLL(CLK_APMIXED_WEDMCUPLL, "wedmcupll" , 0x0240, 0x024C, 0x00000001, 0, 32, |
54 | 0x0240, 4, 0, 0x0244, 0), |
55 | PLL(CLK_APMIXED_NET1PLL, "net1pll" , 0x0250, 0x025C, 0x00000001, 0, 32, |
56 | 0x0250, 4, 0, 0x0254, 0), |
57 | PLL(CLK_APMIXED_MPLL, "mpll" , 0x0260, 0x0270, 0x00000001, 0, 32, |
58 | 0x0260, 4, 0, 0x0264, 0), |
59 | PLL(CLK_APMIXED_APLL2, "apll2" , 0x0278, 0x0288, 0x00000001, 0, 32, |
60 | 0x0278, 4, 0, 0x027C, 0), |
61 | }; |
62 | |
63 | static const struct of_device_id of_match_clk_mt7981_apmixed[] = { |
64 | { .compatible = "mediatek,mt7981-apmixedsys" , }, |
65 | { /* sentinel */ } |
66 | }; |
67 | MODULE_DEVICE_TABLE(of, of_match_clk_mt7981_apmixed); |
68 | |
69 | static int clk_mt7981_apmixed_probe(struct platform_device *pdev) |
70 | { |
71 | struct clk_hw_onecell_data *clk_data; |
72 | struct device_node *node = pdev->dev.of_node; |
73 | int r; |
74 | |
75 | clk_data = mtk_alloc_clk_data(ARRAY_SIZE(plls)); |
76 | if (!clk_data) |
77 | return -ENOMEM; |
78 | |
79 | mtk_clk_register_plls(node, plls, ARRAY_SIZE(plls), clk_data); |
80 | |
81 | r = of_clk_add_hw_provider(np: node, get: of_clk_hw_onecell_get, data: clk_data); |
82 | if (r) { |
83 | pr_err("%s(): could not register clock provider: %d\n" , |
84 | __func__, r); |
85 | goto free_apmixed_data; |
86 | } |
87 | return r; |
88 | |
89 | free_apmixed_data: |
90 | mtk_free_clk_data(clk_data); |
91 | return r; |
92 | } |
93 | |
94 | static struct platform_driver clk_mt7981_apmixed_drv = { |
95 | .probe = clk_mt7981_apmixed_probe, |
96 | .driver = { |
97 | .name = "clk-mt7981-apmixed" , |
98 | .of_match_table = of_match_clk_mt7981_apmixed, |
99 | }, |
100 | }; |
101 | builtin_platform_driver(clk_mt7981_apmixed_drv); |
102 | MODULE_LICENSE("GPL" ); |
103 | |