1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (c) 2017 MediaTek Inc.
4 * Copyright (c) 2023 Collabora, Ltd.
5 * AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
6 */
7
8 #include <dt-bindings/clock/mt7622-clk.h>
9 #include <linux/clk.h>
10 #include <linux/of.h>
11 #include <linux/platform_device.h>
12
13 #include "clk-gate.h"
14 #include "clk-mtk.h"
15 #include "clk-pll.h"
16
17 #define MT7622_PLL_FMAX (2500UL * MHZ)
18 #define CON0_MT7622_RST_BAR BIT(27)
19
20 #define PLL_xtal(_id, _name, _reg, _pwr_reg, _en_mask, _flags, _pcwbits,\
21 _pd_reg, _pd_shift, _tuner_reg, _pcw_reg, \
22 _pcw_shift, _div_table, _parent_name) { \
23 .id = _id, \
24 .name = _name, \
25 .reg = _reg, \
26 .pwr_reg = _pwr_reg, \
27 .en_mask = _en_mask, \
28 .flags = _flags, \
29 .rst_bar_mask = CON0_MT7622_RST_BAR, \
30 .fmax = MT7622_PLL_FMAX, \
31 .pcwbits = _pcwbits, \
32 .pd_reg = _pd_reg, \
33 .pd_shift = _pd_shift, \
34 .tuner_reg = _tuner_reg, \
35 .pcw_reg = _pcw_reg, \
36 .pcw_shift = _pcw_shift, \
37 .div_table = _div_table, \
38 .parent_name = _parent_name, \
39 }
40
41 #define PLL(_id, _name, _reg, _pwr_reg, _en_mask, _flags, _pcwbits, \
42 _pd_reg, _pd_shift, _tuner_reg, _pcw_reg, \
43 _pcw_shift) \
44 PLL_xtal(_id, _name, _reg, _pwr_reg, _en_mask, _flags, _pcwbits,\
45 _pd_reg, _pd_shift, _tuner_reg, _pcw_reg, _pcw_shift, \
46 NULL, "clkxtal")
47
48 static const struct mtk_gate_regs apmixed_cg_regs = {
49 .set_ofs = 0x8,
50 .clr_ofs = 0x8,
51 .sta_ofs = 0x8,
52 };
53
54 #define GATE_APMIXED_AO(_id, _name, _parent, _shift) \
55 GATE_MTK_FLAGS(_id, _name, _parent, &apmixed_cg_regs, _shift, \
56 &mtk_clk_gate_ops_no_setclr_inv, CLK_IS_CRITICAL)
57
58 static const struct mtk_pll_data plls[] = {
59 PLL(CLK_APMIXED_ARMPLL, "armpll", 0x0200, 0x020C, 0,
60 PLL_AO, 21, 0x0204, 24, 0, 0x0204, 0),
61 PLL(CLK_APMIXED_MAINPLL, "mainpll", 0x0210, 0x021C, 0,
62 HAVE_RST_BAR, 21, 0x0214, 24, 0, 0x0214, 0),
63 PLL(CLK_APMIXED_UNIV2PLL, "univ2pll", 0x0220, 0x022C, 0,
64 HAVE_RST_BAR, 7, 0x0224, 24, 0, 0x0224, 14),
65 PLL(CLK_APMIXED_ETH1PLL, "eth1pll", 0x0300, 0x0310, 0,
66 0, 21, 0x0300, 1, 0, 0x0304, 0),
67 PLL(CLK_APMIXED_ETH2PLL, "eth2pll", 0x0314, 0x0320, 0,
68 0, 21, 0x0314, 1, 0, 0x0318, 0),
69 PLL(CLK_APMIXED_AUD1PLL, "aud1pll", 0x0324, 0x0330, 0,
70 0, 31, 0x0324, 1, 0, 0x0328, 0),
71 PLL(CLK_APMIXED_AUD2PLL, "aud2pll", 0x0334, 0x0340, 0,
72 0, 31, 0x0334, 1, 0, 0x0338, 0),
73 PLL(CLK_APMIXED_TRGPLL, "trgpll", 0x0344, 0x0354, 0,
74 0, 21, 0x0344, 1, 0, 0x0348, 0),
75 PLL(CLK_APMIXED_SGMIPLL, "sgmipll", 0x0358, 0x0368, 0,
76 0, 21, 0x0358, 1, 0, 0x035C, 0),
77 };
78
79 static const struct mtk_gate apmixed_clks[] = {
80 GATE_APMIXED_AO(CLK_APMIXED_MAIN_CORE_EN, "main_core_en", "mainpll", 5),
81 };
82
clk_mt7622_apmixed_probe(struct platform_device * pdev)83 static int clk_mt7622_apmixed_probe(struct platform_device *pdev)
84 {
85 void __iomem *base;
86 struct clk_hw_onecell_data *clk_data;
87 struct device_node *node = pdev->dev.of_node;
88 struct device *dev = &pdev->dev;
89 int ret;
90
91 base = devm_platform_ioremap_resource(pdev, 0);
92 if (IS_ERR(base))
93 return PTR_ERR(base);
94
95 clk_data = mtk_devm_alloc_clk_data(dev, CLK_APMIXED_NR_CLK);
96 if (!clk_data)
97 return -ENOMEM;
98
99 ret = mtk_clk_register_plls(node, plls, ARRAY_SIZE(plls), clk_data);
100 if (ret)
101 return ret;
102
103 ret = mtk_clk_register_gates(&pdev->dev, node, apmixed_clks,
104 ARRAY_SIZE(apmixed_clks), clk_data);
105 if (ret)
106 goto unregister_plls;
107
108 ret = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
109 if (ret)
110 goto unregister_gates;
111
112 return 0;
113
114 unregister_gates:
115 mtk_clk_unregister_gates(apmixed_clks, ARRAY_SIZE(apmixed_clks), clk_data);
116 unregister_plls:
117 mtk_clk_unregister_plls(plls, ARRAY_SIZE(plls), clk_data);
118
119 return ret;
120 }
121
clk_mt7622_apmixed_remove(struct platform_device * pdev)122 static void clk_mt7622_apmixed_remove(struct platform_device *pdev)
123 {
124 struct device_node *node = pdev->dev.of_node;
125 struct clk_hw_onecell_data *clk_data = platform_get_drvdata(pdev);
126
127 of_clk_del_provider(node);
128 mtk_clk_unregister_gates(apmixed_clks, ARRAY_SIZE(apmixed_clks), clk_data);
129 mtk_clk_unregister_plls(plls, ARRAY_SIZE(plls), clk_data);
130 }
131
132 static const struct of_device_id of_match_clk_mt7622_apmixed[] = {
133 { .compatible = "mediatek,mt7622-apmixedsys" },
134 { /* sentinel */ }
135 };
136 MODULE_DEVICE_TABLE(of, of_match_clk_mt7622_apmixed);
137
138 static struct platform_driver clk_mt7622_apmixed_drv = {
139 .probe = clk_mt7622_apmixed_probe,
140 .remove_new = clk_mt7622_apmixed_remove,
141 .driver = {
142 .name = "clk-mt7622-apmixed",
143 .of_match_table = of_match_clk_mt7622_apmixed,
144 },
145 };
146 module_platform_driver(clk_mt7622_apmixed_drv)
147
148 MODULE_DESCRIPTION("MediaTek MT7622 apmixedsys clocks driver");
149 MODULE_LICENSE("GPL");
150