1
2
3
4
5
6
7#include <linux/of_address.h>
8#include <dt-bindings/clock/hix5hd2-clock.h>
9#include <linux/slab.h>
10#include <linux/delay.h>
11#include "clk.h"
12
13static struct hisi_fixed_rate_clock hix5hd2_fixed_rate_clks[] __initdata = {
14 { HIX5HD2_FIXED_1200M, "1200m", NULL, 0, 1200000000, },
15 { HIX5HD2_FIXED_400M, "400m", NULL, 0, 400000000, },
16 { HIX5HD2_FIXED_48M, "48m", NULL, 0, 48000000, },
17 { HIX5HD2_FIXED_24M, "24m", NULL, 0, 24000000, },
18 { HIX5HD2_FIXED_600M, "600m", NULL, 0, 600000000, },
19 { HIX5HD2_FIXED_300M, "300m", NULL, 0, 300000000, },
20 { HIX5HD2_FIXED_75M, "75m", NULL, 0, 75000000, },
21 { HIX5HD2_FIXED_200M, "200m", NULL, 0, 200000000, },
22 { HIX5HD2_FIXED_100M, "100m", NULL, 0, 100000000, },
23 { HIX5HD2_FIXED_40M, "40m", NULL, 0, 40000000, },
24 { HIX5HD2_FIXED_150M, "150m", NULL, 0, 150000000, },
25 { HIX5HD2_FIXED_1728M, "1728m", NULL, 0, 1728000000, },
26 { HIX5HD2_FIXED_28P8M, "28p8m", NULL, 0, 28000000, },
27 { HIX5HD2_FIXED_432M, "432m", NULL, 0, 432000000, },
28 { HIX5HD2_FIXED_345P6M, "345p6m", NULL, 0, 345000000, },
29 { HIX5HD2_FIXED_288M, "288m", NULL, 0, 288000000, },
30 { HIX5HD2_FIXED_60M, "60m", NULL, 0, 60000000, },
31 { HIX5HD2_FIXED_750M, "750m", NULL, 0, 750000000, },
32 { HIX5HD2_FIXED_500M, "500m", NULL, 0, 500000000, },
33 { HIX5HD2_FIXED_54M, "54m", NULL, 0, 54000000, },
34 { HIX5HD2_FIXED_27M, "27m", NULL, 0, 27000000, },
35 { HIX5HD2_FIXED_1500M, "1500m", NULL, 0, 1500000000, },
36 { HIX5HD2_FIXED_375M, "375m", NULL, 0, 375000000, },
37 { HIX5HD2_FIXED_187M, "187m", NULL, 0, 187000000, },
38 { HIX5HD2_FIXED_250M, "250m", NULL, 0, 250000000, },
39 { HIX5HD2_FIXED_125M, "125m", NULL, 0, 125000000, },
40 { HIX5HD2_FIXED_2P02M, "2m", NULL, 0, 2000000, },
41 { HIX5HD2_FIXED_50M, "50m", NULL, 0, 50000000, },
42 { HIX5HD2_FIXED_25M, "25m", NULL, 0, 25000000, },
43 { HIX5HD2_FIXED_83M, "83m", NULL, 0, 83333333, },
44};
45
46static const char *const sfc_mux_p[] __initconst = {
47 "24m", "150m", "200m", "100m", "75m", };
48static u32 sfc_mux_table[] = {0, 4, 5, 6, 7};
49
50static const char *const sdio_mux_p[] __initconst = {
51 "75m", "100m", "50m", "15m", };
52static u32 sdio_mux_table[] = {0, 1, 2, 3};
53
54static const char *const fephy_mux_p[] __initconst = { "25m", "125m"};
55static u32 fephy_mux_table[] = {0, 1};
56
57
58static struct hisi_mux_clock hix5hd2_mux_clks[] __initdata = {
59 { HIX5HD2_SFC_MUX, "sfc_mux", sfc_mux_p, ARRAY_SIZE(sfc_mux_p),
60 CLK_SET_RATE_PARENT, 0x5c, 8, 3, 0, sfc_mux_table, },
61 { HIX5HD2_MMC_MUX, "mmc_mux", sdio_mux_p, ARRAY_SIZE(sdio_mux_p),
62 CLK_SET_RATE_PARENT, 0xa0, 8, 2, 0, sdio_mux_table, },
63 { HIX5HD2_SD_MUX, "sd_mux", sdio_mux_p, ARRAY_SIZE(sdio_mux_p),
64 CLK_SET_RATE_PARENT, 0x9c, 8, 2, 0, sdio_mux_table, },
65 { HIX5HD2_FEPHY_MUX, "fephy_mux",
66 fephy_mux_p, ARRAY_SIZE(fephy_mux_p),
67 CLK_SET_RATE_PARENT, 0x120, 8, 2, 0, fephy_mux_table, },
68};
69
70static struct hisi_gate_clock hix5hd2_gate_clks[] __initdata = {
71
72 { HIX5HD2_SFC_CLK, "clk_sfc", "sfc_mux",
73 CLK_SET_RATE_PARENT, 0x5c, 0, 0, },
74 { HIX5HD2_SFC_RST, "rst_sfc", "clk_sfc",
75 CLK_SET_RATE_PARENT, 0x5c, 4, CLK_GATE_SET_TO_DISABLE, },
76
77 { HIX5HD2_SD_BIU_CLK, "clk_sd_biu", "200m",
78 CLK_SET_RATE_PARENT, 0x9c, 0, 0, },
79 { HIX5HD2_SD_CIU_CLK, "clk_sd_ciu", "sd_mux",
80 CLK_SET_RATE_PARENT, 0x9c, 1, 0, },
81 { HIX5HD2_SD_CIU_RST, "rst_sd_ciu", "clk_sd_ciu",
82 CLK_SET_RATE_PARENT, 0x9c, 4, CLK_GATE_SET_TO_DISABLE, },
83
84 { HIX5HD2_MMC_BIU_CLK, "clk_mmc_biu", "200m",
85 CLK_SET_RATE_PARENT, 0xa0, 0, 0, },
86 { HIX5HD2_MMC_CIU_CLK, "clk_mmc_ciu", "mmc_mux",
87 CLK_SET_RATE_PARENT, 0xa0, 1, 0, },
88 { HIX5HD2_MMC_CIU_RST, "rst_mmc_ciu", "clk_mmc_ciu",
89 CLK_SET_RATE_PARENT, 0xa0, 4, CLK_GATE_SET_TO_DISABLE, },
90
91 { HIX5HD2_FWD_BUS_CLK, "clk_fwd_bus", NULL, 0, 0xcc, 0, 0, },
92 { HIX5HD2_FWD_SYS_CLK, "clk_fwd_sys", "clk_fwd_bus", 0, 0xcc, 5, 0, },
93 { HIX5HD2_MAC0_PHY_CLK, "clk_fephy", "clk_fwd_sys",
94 CLK_SET_RATE_PARENT, 0x120, 0, 0, },
95
96 { HIX5HD2_WDG0_CLK, "clk_wdg0", "24m",
97 CLK_SET_RATE_PARENT, 0x178, 0, 0, },
98 { HIX5HD2_WDG0_RST, "rst_wdg0", "clk_wdg0",
99 CLK_SET_RATE_PARENT, 0x178, 4, CLK_GATE_SET_TO_DISABLE, },
100
101 {HIX5HD2_I2C0_CLK, "clk_i2c0", "100m",
102 CLK_SET_RATE_PARENT, 0x06c, 4, 0, },
103 {HIX5HD2_I2C0_RST, "rst_i2c0", "clk_i2c0",
104 CLK_SET_RATE_PARENT, 0x06c, 5, CLK_GATE_SET_TO_DISABLE, },
105 {HIX5HD2_I2C1_CLK, "clk_i2c1", "100m",
106 CLK_SET_RATE_PARENT, 0x06c, 8, 0, },
107 {HIX5HD2_I2C1_RST, "rst_i2c1", "clk_i2c1",
108 CLK_SET_RATE_PARENT, 0x06c, 9, CLK_GATE_SET_TO_DISABLE, },
109 {HIX5HD2_I2C2_CLK, "clk_i2c2", "100m",
110 CLK_SET_RATE_PARENT, 0x06c, 12, 0, },
111 {HIX5HD2_I2C2_RST, "rst_i2c2", "clk_i2c2",
112 CLK_SET_RATE_PARENT, 0x06c, 13, CLK_GATE_SET_TO_DISABLE, },
113 {HIX5HD2_I2C3_CLK, "clk_i2c3", "100m",
114 CLK_SET_RATE_PARENT, 0x06c, 16, 0, },
115 {HIX5HD2_I2C3_RST, "rst_i2c3", "clk_i2c3",
116 CLK_SET_RATE_PARENT, 0x06c, 17, CLK_GATE_SET_TO_DISABLE, },
117 {HIX5HD2_I2C4_CLK, "clk_i2c4", "100m",
118 CLK_SET_RATE_PARENT, 0x06c, 20, 0, },
119 {HIX5HD2_I2C4_RST, "rst_i2c4", "clk_i2c4",
120 CLK_SET_RATE_PARENT, 0x06c, 21, CLK_GATE_SET_TO_DISABLE, },
121 {HIX5HD2_I2C5_CLK, "clk_i2c5", "100m",
122 CLK_SET_RATE_PARENT, 0x06c, 0, 0, },
123 {HIX5HD2_I2C5_RST, "rst_i2c5", "clk_i2c5",
124 CLK_SET_RATE_PARENT, 0x06c, 1, CLK_GATE_SET_TO_DISABLE, },
125};
126
127enum hix5hd2_clk_type {
128 TYPE_COMPLEX,
129 TYPE_ETHER,
130};
131
132struct hix5hd2_complex_clock {
133 const char *name;
134 const char *parent_name;
135 u32 id;
136 u32 ctrl_reg;
137 u32 ctrl_clk_mask;
138 u32 ctrl_rst_mask;
139 u32 phy_reg;
140 u32 phy_clk_mask;
141 u32 phy_rst_mask;
142 enum hix5hd2_clk_type type;
143};
144
145struct hix5hd2_clk_complex {
146 struct clk_hw hw;
147 u32 id;
148 void __iomem *ctrl_reg;
149 u32 ctrl_clk_mask;
150 u32 ctrl_rst_mask;
151 void __iomem *phy_reg;
152 u32 phy_clk_mask;
153 u32 phy_rst_mask;
154};
155
156static struct hix5hd2_complex_clock hix5hd2_complex_clks[] __initdata = {
157 {"clk_mac0", "clk_fephy", HIX5HD2_MAC0_CLK,
158 0xcc, 0xa, 0x500, 0x120, 0, 0x10, TYPE_ETHER},
159 {"clk_mac1", "clk_fwd_sys", HIX5HD2_MAC1_CLK,
160 0xcc, 0x14, 0xa00, 0x168, 0x2, 0, TYPE_ETHER},
161 {"clk_sata", NULL, HIX5HD2_SATA_CLK,
162 0xa8, 0x1f, 0x300, 0xac, 0x1, 0x0, TYPE_COMPLEX},
163 {"clk_usb", NULL, HIX5HD2_USB_CLK,
164 0xb8, 0xff, 0x3f000, 0xbc, 0x7, 0x3f00, TYPE_COMPLEX},
165};
166
167#define to_complex_clk(_hw) container_of(_hw, struct hix5hd2_clk_complex, hw)
168
169static int clk_ether_prepare(struct clk_hw *hw)
170{
171 struct hix5hd2_clk_complex *clk = to_complex_clk(hw);
172 u32 val;
173
174 val = readl_relaxed(clk->ctrl_reg);
175 val |= clk->ctrl_clk_mask | clk->ctrl_rst_mask;
176 writel_relaxed(val, clk->ctrl_reg);
177 val &= ~(clk->ctrl_rst_mask);
178 writel_relaxed(val, clk->ctrl_reg);
179
180 val = readl_relaxed(clk->phy_reg);
181 val |= clk->phy_clk_mask;
182 val &= ~(clk->phy_rst_mask);
183 writel_relaxed(val, clk->phy_reg);
184 mdelay(10);
185
186 val &= ~(clk->phy_clk_mask);
187 val |= clk->phy_rst_mask;
188 writel_relaxed(val, clk->phy_reg);
189 mdelay(10);
190
191 val |= clk->phy_clk_mask;
192 val &= ~(clk->phy_rst_mask);
193 writel_relaxed(val, clk->phy_reg);
194 mdelay(30);
195 return 0;
196}
197
198static void clk_ether_unprepare(struct clk_hw *hw)
199{
200 struct hix5hd2_clk_complex *clk = to_complex_clk(hw);
201 u32 val;
202
203 val = readl_relaxed(clk->ctrl_reg);
204 val &= ~(clk->ctrl_clk_mask);
205 writel_relaxed(val, clk->ctrl_reg);
206}
207
208static const struct clk_ops clk_ether_ops = {
209 .prepare = clk_ether_prepare,
210 .unprepare = clk_ether_unprepare,
211};
212
213static int clk_complex_enable(struct clk_hw *hw)
214{
215 struct hix5hd2_clk_complex *clk = to_complex_clk(hw);
216 u32 val;
217
218 val = readl_relaxed(clk->ctrl_reg);
219 val |= clk->ctrl_clk_mask;
220 val &= ~(clk->ctrl_rst_mask);
221 writel_relaxed(val, clk->ctrl_reg);
222
223 val = readl_relaxed(clk->phy_reg);
224 val |= clk->phy_clk_mask;
225 val &= ~(clk->phy_rst_mask);
226 writel_relaxed(val, clk->phy_reg);
227
228 return 0;
229}
230
231static void clk_complex_disable(struct clk_hw *hw)
232{
233 struct hix5hd2_clk_complex *clk = to_complex_clk(hw);
234 u32 val;
235
236 val = readl_relaxed(clk->ctrl_reg);
237 val |= clk->ctrl_rst_mask;
238 val &= ~(clk->ctrl_clk_mask);
239 writel_relaxed(val, clk->ctrl_reg);
240
241 val = readl_relaxed(clk->phy_reg);
242 val |= clk->phy_rst_mask;
243 val &= ~(clk->phy_clk_mask);
244 writel_relaxed(val, clk->phy_reg);
245}
246
247static const struct clk_ops clk_complex_ops = {
248 .enable = clk_complex_enable,
249 .disable = clk_complex_disable,
250};
251
252static void __init
253hix5hd2_clk_register_complex(struct hix5hd2_complex_clock *clks, int nums,
254 struct hisi_clock_data *data)
255{
256 void __iomem *base = data->base;
257 int i;
258
259 for (i = 0; i < nums; i++) {
260 struct hix5hd2_clk_complex *p_clk;
261 struct clk *clk;
262 struct clk_init_data init;
263
264 p_clk = kzalloc(sizeof(*p_clk), GFP_KERNEL);
265 if (!p_clk)
266 return;
267
268 init.name = clks[i].name;
269 if (clks[i].type == TYPE_ETHER)
270 init.ops = &clk_ether_ops;
271 else
272 init.ops = &clk_complex_ops;
273
274 init.flags = 0;
275 init.parent_names =
276 (clks[i].parent_name ? &clks[i].parent_name : NULL);
277 init.num_parents = (clks[i].parent_name ? 1 : 0);
278
279 p_clk->ctrl_reg = base + clks[i].ctrl_reg;
280 p_clk->ctrl_clk_mask = clks[i].ctrl_clk_mask;
281 p_clk->ctrl_rst_mask = clks[i].ctrl_rst_mask;
282 p_clk->phy_reg = base + clks[i].phy_reg;
283 p_clk->phy_clk_mask = clks[i].phy_clk_mask;
284 p_clk->phy_rst_mask = clks[i].phy_rst_mask;
285 p_clk->hw.init = &init;
286
287 clk = clk_register(NULL, &p_clk->hw);
288 if (IS_ERR(clk)) {
289 kfree(p_clk);
290 pr_err("%s: failed to register clock %s\n",
291 __func__, clks[i].name);
292 continue;
293 }
294
295 data->clk_data.clks[clks[i].id] = clk;
296 }
297}
298
299static void __init hix5hd2_clk_init(struct device_node *np)
300{
301 struct hisi_clock_data *clk_data;
302
303 clk_data = hisi_clk_init(np, HIX5HD2_NR_CLKS);
304 if (!clk_data)
305 return;
306
307 hisi_clk_register_fixed_rate(hix5hd2_fixed_rate_clks,
308 ARRAY_SIZE(hix5hd2_fixed_rate_clks),
309 clk_data);
310 hisi_clk_register_mux(hix5hd2_mux_clks, ARRAY_SIZE(hix5hd2_mux_clks),
311 clk_data);
312 hisi_clk_register_gate(hix5hd2_gate_clks,
313 ARRAY_SIZE(hix5hd2_gate_clks), clk_data);
314 hix5hd2_clk_register_complex(hix5hd2_complex_clks,
315 ARRAY_SIZE(hix5hd2_complex_clks),
316 clk_data);
317}
318
319CLK_OF_DECLARE(hix5hd2_clk, "hisilicon,hix5hd2-clock", hix5hd2_clk_init);
320
