1 // SPDX-License-Identifier: GPL-2.0-only
2 //
3 // Copyright (c) 2022 MediaTek Inc.
4 // Author: Chun-Jie Chen <chun-jie.chen@mediatek.com>
5
6 #include <linux/clk-provider.h>
7 #include <linux/platform_device.h>
8 #include <dt-bindings/clock/mt8186-clk.h>
9
10 #include "clk-mtk.h"
11 #include "clk-pll.h"
12
13 #define MT8186_PLL_FMAX (3800UL * MHZ)
14 #define MT8186_PLL_FMIN (1500UL * MHZ)
15 #define MT8186_INTEGER_BITS (8)
16
17 #define PLL(_id, _name, _reg, _pwr_reg, _en_mask, _flags, \
18 _rst_bar_mask, _pcwbits, _pd_reg, _pd_shift, \
19 _tuner_reg, _tuner_en_reg, _tuner_en_bit, \
20 _pcw_reg) { \
21 .id = _id, \
22 .name = _name, \
23 .reg = _reg, \
24 .pwr_reg = _pwr_reg, \
25 .en_mask = _en_mask, \
26 .flags = _flags, \
27 .rst_bar_mask = _rst_bar_mask, \
28 .fmax = MT8186_PLL_FMAX, \
29 .fmin = MT8186_PLL_FMIN, \
30 .pcwbits = _pcwbits, \
31 .pcwibits = MT8186_INTEGER_BITS, \
32 .pd_reg = _pd_reg, \
33 .pd_shift = _pd_shift, \
34 .tuner_reg = _tuner_reg, \
35 .tuner_en_reg = _tuner_en_reg, \
36 .tuner_en_bit = _tuner_en_bit, \
37 .pcw_reg = _pcw_reg, \
38 .pcw_shift = 0, \
39 .pcw_chg_reg = 0, \
40 .en_reg = 0, \
41 .pll_en_bit = 0, \
42 }
43
44 static const struct mtk_pll_data plls[] = {
45 /*
46 * armpll_ll/armpll_bl/ccipll are main clock source of AP MCU,
47 * should not be closed in Linux world.
48 */
49 PLL(CLK_APMIXED_ARMPLL_LL, "armpll_ll", 0x0204, 0x0210, 0,
50 PLL_AO, 0, 22, 0x0208, 24, 0, 0, 0, 0x0208),
51 PLL(CLK_APMIXED_ARMPLL_BL, "armpll_bl", 0x0214, 0x0220, 0,
52 PLL_AO, 0, 22, 0x0218, 24, 0, 0, 0, 0x0218),
53 PLL(CLK_APMIXED_CCIPLL, "ccipll", 0x0224, 0x0230, 0,
54 PLL_AO, 0, 22, 0x0228, 24, 0, 0, 0, 0x0228),
55 PLL(CLK_APMIXED_MAINPLL, "mainpll", 0x0244, 0x0250, 0xff000000,
56 HAVE_RST_BAR, BIT(23), 22, 0x0248, 24, 0, 0, 0, 0x0248),
57 PLL(CLK_APMIXED_UNIV2PLL, "univ2pll", 0x0324, 0x0330, 0xff000000,
58 HAVE_RST_BAR, BIT(23), 22, 0x0328, 24, 0, 0, 0, 0x0328),
59 PLL(CLK_APMIXED_MSDCPLL, "msdcpll", 0x038C, 0x0398, 0,
60 0, 0, 22, 0x0390, 24, 0, 0, 0, 0x0390),
61 PLL(CLK_APMIXED_MMPLL, "mmpll", 0x0254, 0x0260, 0,
62 0, 0, 22, 0x0258, 24, 0, 0, 0, 0x0258),
63 PLL(CLK_APMIXED_NNAPLL, "nnapll", 0x035C, 0x0368, 0,
64 0, 0, 22, 0x0360, 24, 0, 0, 0, 0x0360),
65 PLL(CLK_APMIXED_NNA2PLL, "nna2pll", 0x036C, 0x0378, 0,
66 0, 0, 22, 0x0370, 24, 0, 0, 0, 0x0370),
67 PLL(CLK_APMIXED_ADSPPLL, "adsppll", 0x0304, 0x0310, 0,
68 0, 0, 22, 0x0308, 24, 0, 0, 0, 0x0308),
69 PLL(CLK_APMIXED_MFGPLL, "mfgpll", 0x0314, 0x0320, 0,
70 0, 0, 22, 0x0318, 24, 0, 0, 0, 0x0318),
71 PLL(CLK_APMIXED_TVDPLL, "tvdpll", 0x0264, 0x0270, 0,
72 0, 0, 22, 0x0268, 24, 0, 0, 0, 0x0268),
73 PLL(CLK_APMIXED_APLL1, "apll1", 0x0334, 0x0344, 0,
74 0, 0, 32, 0x0338, 24, 0x0040, 0x000C, 0, 0x033C),
75 PLL(CLK_APMIXED_APLL2, "apll2", 0x0348, 0x0358, 0,
76 0, 0, 32, 0x034C, 24, 0x0044, 0x000C, 5, 0x0350),
77 };
78
79 static const struct of_device_id of_match_clk_mt8186_apmixed[] = {
80 { .compatible = "mediatek,mt8186-apmixedsys", },
81 {}
82 };
83
clk_mt8186_apmixed_probe(struct platform_device * pdev)84 static int clk_mt8186_apmixed_probe(struct platform_device *pdev)
85 {
86 struct clk_hw_onecell_data *clk_data;
87 struct device_node *node = pdev->dev.of_node;
88 int r;
89
90 clk_data = mtk_alloc_clk_data(CLK_APMIXED_NR_CLK);
91 if (!clk_data)
92 return -ENOMEM;
93
94 r = mtk_clk_register_plls(node, plls, ARRAY_SIZE(plls), clk_data);
95 if (r)
96 goto free_apmixed_data;
97
98 r = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
99 if (r)
100 goto unregister_plls;
101
102 platform_set_drvdata(pdev, clk_data);
103
104 return r;
105
106 unregister_plls:
107 mtk_clk_unregister_plls(plls, ARRAY_SIZE(plls), clk_data);
108 free_apmixed_data:
109 mtk_free_clk_data(clk_data);
110 return r;
111 }
112
clk_mt8186_apmixed_remove(struct platform_device * pdev)113 static int clk_mt8186_apmixed_remove(struct platform_device *pdev)
114 {
115 struct device_node *node = pdev->dev.of_node;
116 struct clk_hw_onecell_data *clk_data = platform_get_drvdata(pdev);
117
118 of_clk_del_provider(node);
119 mtk_clk_unregister_plls(plls, ARRAY_SIZE(plls), clk_data);
120 mtk_free_clk_data(clk_data);
121
122 return 0;
123 }
124
125 static struct platform_driver clk_mt8186_apmixed_drv = {
126 .probe = clk_mt8186_apmixed_probe,
127 .remove = clk_mt8186_apmixed_remove,
128 .driver = {
129 .name = "clk-mt8186-apmixed",
130 .of_match_table = of_match_clk_mt8186_apmixed,
131 },
132 };
133 builtin_platform_driver(clk_mt8186_apmixed_drv);
134