xref: /linux/drivers/clk/visconti/clkc-tmpv770x.c (revision d30c1683aaecb93d2ab95685dc4300a33d3cea7a)
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Toshiba Visconti clock controller
4  *
5  * Copyright (c) 2021 TOSHIBA CORPORATION
6  * Copyright (c) 2021 Toshiba Electronic Devices & Storage Corporation
7  *
8  * Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>
9  */
10 
11 #include <linux/clk-provider.h>
12 #include <linux/platform_device.h>
13 
14 #include <dt-bindings/clock/toshiba,tmpv770x.h>
15 #include <dt-bindings/reset/toshiba,tmpv770x.h>
16 
17 #include "clkc.h"
18 #include "reset.h"
19 
20 /* Must be equal to the last clock/reset ID increased by one */
21 #define CLKS_NR	(TMPV770X_CLK_VIIFBS1_PROC + 1)
22 #define RESETS_NR	(TMPV770X_RESET_VIIFBS1_L1ISP + 1)
23 
24 static DEFINE_SPINLOCK(tmpv770x_clk_lock);
25 static DEFINE_SPINLOCK(tmpv770x_rst_lock);
26 
27 static const struct clk_parent_data clks_parent_data[] = {
28 	{ .fw_name = "pipll1", .name = "pipll1", },
29 };
30 
31 static const struct clk_parent_data pietherplls_parent_data[] = {
32 	{ .fw_name = "pietherpll", .name = "pietherpll", },
33 };
34 
35 static const struct clk_parent_data pidnnplls_parent_data[] = {
36 	{ .fw_name = "pidnnpll", .name = "pidnnpll", },
37 };
38 
39 static const struct visconti_fixed_clk fixed_clk_tables[] = {
40 	/* PLL1 */
41 	/* PICMPT0/1, PITSC, PIUWDT, PISWDT, PISBUS, PIPMU, PIGPMU, PITMU */
42 	/* PIEMM, PIMISC, PIGCOMM, PIDCOMM, PIMBUS, PIGPIO, PIPGM */
43 	{ TMPV770X_CLK_PIPLL1_DIV4, "pipll1_div4", "pipll1", 0, 1, 4, },
44 	/* PISBUS */
45 	{ TMPV770X_CLK_PIPLL1_DIV2, "pipll1_div2", "pipll1", 0, 1, 2, },
46 	/* PICOBUS_CLK */
47 	{ TMPV770X_CLK_PIPLL1_DIV1, "pipll1_div1", "pipll1", 0, 1, 1, },
48 	/* PIDNNPLL */
49 	/* CONN_CLK, PIMBUS, PICRC0/1 */
50 	{ TMPV770X_CLK_PIDNNPLL_DIV1, "pidnnpll_div1", "pidnnpll", 0, 1, 1, },
51 	{ TMPV770X_CLK_PIREFCLK, "pirefclk", "osc2-clk", 0, 1, 1, },
52 	{ TMPV770X_CLK_WDTCLK, "wdtclk", "osc2-clk", 0, 1, 1, },
53 };
54 
55 static const struct visconti_clk_gate_table pietherpll_clk_gate_tables[] = {
56 	/* pietherpll */
57 	{ TMPV770X_CLK_PIETHER_2P5M, "piether_2p5m",
58 		pietherplls_parent_data, ARRAY_SIZE(pietherplls_parent_data),
59 		CLK_SET_RATE_PARENT, 0x34, 0x134, 4, 200,
60 		TMPV770X_RESET_PIETHER_2P5M, },
61 	{ TMPV770X_CLK_PIETHER_25M, "piether_25m",
62 		pietherplls_parent_data, ARRAY_SIZE(pietherplls_parent_data),
63 		CLK_SET_RATE_PARENT, 0x34, 0x134, 5, 20,
64 		TMPV770X_RESET_PIETHER_25M, },
65 	{ TMPV770X_CLK_PIETHER_50M, "piether_50m",
66 		pietherplls_parent_data, ARRAY_SIZE(pietherplls_parent_data),
67 		CLK_SET_RATE_PARENT, 0x34, 0x134, 6, 10,
68 		TMPV770X_RESET_PIETHER_50M, },
69 	{ TMPV770X_CLK_PIETHER_125M, "piether_125m",
70 		pietherplls_parent_data, ARRAY_SIZE(pietherplls_parent_data),
71 		CLK_SET_RATE_PARENT, 0x34, 0x134, 7, 4,
72 		TMPV770X_RESET_PIETHER_125M, },
73 };
74 
75 static const struct visconti_clk_gate_table pidnnpll_clk_gate_tables[] = {
76 	{ TMPV770X_CLK_VIIFBS0, "viifbs0",
77 		pidnnplls_parent_data, ARRAY_SIZE(pidnnplls_parent_data),
78 		0, 0x58, 0x158, 1, 1,
79 		NO_RESET, },
80 	{ TMPV770X_CLK_VIIFBS0_PROC, "viifbs0_proc",
81 		pidnnplls_parent_data, ARRAY_SIZE(pidnnplls_parent_data),
82 		0, 0x58, 0x158, 18, 1,
83 		NO_RESET, },
84 	{ TMPV770X_CLK_VIIFBS0_L1ISP, "viifbs0_l1isp",
85 		pidnnplls_parent_data, ARRAY_SIZE(pidnnplls_parent_data),
86 		0, 0x58, 0x158, 17, 1,
87 		NO_RESET, },
88 	{ TMPV770X_CLK_VIIFBS0_L2ISP, "viifbs0_l2isp",
89 		pidnnplls_parent_data, ARRAY_SIZE(pidnnplls_parent_data),
90 		0, 0x58, 0x158, 16, 1,
91 		NO_RESET, },
92 	{ TMPV770X_CLK_VIIFBS1, "viifbs1",
93 		pidnnplls_parent_data, ARRAY_SIZE(pidnnplls_parent_data),
94 		0, 0x58, 0x158, 5, 1,
95 		NO_RESET, },
96 	{ TMPV770X_CLK_VIIFBS1_PROC, "viifbs1_proc",
97 		pidnnplls_parent_data, ARRAY_SIZE(pidnnplls_parent_data),
98 		0, 0x58, 0x158, 22, 1,
99 		NO_RESET, },
100 	{ TMPV770X_CLK_VIIFBS1_L1ISP, "viifbs1_l1isp",
101 		pidnnplls_parent_data, ARRAY_SIZE(pidnnplls_parent_data),
102 		0, 0x58, 0x158, 21, 1,
103 		NO_RESET, },
104 	{ TMPV770X_CLK_VIIFBS1_L2ISP, "viifbs1_l2isp",
105 		pidnnplls_parent_data, ARRAY_SIZE(pidnnplls_parent_data),
106 		0, 0x58, 0x158, 20, 1,
107 		NO_RESET, },
108 };
109 
110 static const struct visconti_clk_gate_table clk_gate_tables[] = {
111 	{ TMPV770X_CLK_HOX, "hox",
112 		clks_parent_data, ARRAY_SIZE(clks_parent_data),
113 		CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED, 0x4c, 0x14c, 0, 1,
114 		TMPV770X_RESET_HOX, },
115 	{ TMPV770X_CLK_PCIE_MSTR, "pcie_mstr",
116 		clks_parent_data, ARRAY_SIZE(clks_parent_data),
117 		CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED, 0x38, 0x138, 0, 1,
118 		TMPV770X_RESET_PCIE_MSTR, },
119 	{ TMPV770X_CLK_PCIE_AUX, "pcie_aux",
120 		clks_parent_data, ARRAY_SIZE(clks_parent_data),
121 		CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED, 0x38, 0x138, 1, 24,
122 		TMPV770X_RESET_PCIE_AUX, },
123 	{ TMPV770X_CLK_PIINTC, "piintc",
124 		clks_parent_data, ARRAY_SIZE(clks_parent_data),
125 		CLK_IGNORE_UNUSED, 0x8, 0x108, 0, 2, //FIX!!
126 		TMPV770X_RESET_PIINTC,},
127 	{ TMPV770X_CLK_PIETHER_BUS, "piether_bus",
128 		clks_parent_data, ARRAY_SIZE(clks_parent_data),
129 		0, 0x34, 0x134, 0, 2,
130 		TMPV770X_RESET_PIETHER_BUS, }, /* BUS_CLK */
131 	{ TMPV770X_CLK_PISPI0, "pispi0",
132 		clks_parent_data, ARRAY_SIZE(clks_parent_data),
133 		0, 0x28, 0x128, 0, 2,
134 		TMPV770X_RESET_PISPI0, },
135 	{ TMPV770X_CLK_PISPI1, "pispi1",
136 		clks_parent_data, ARRAY_SIZE(clks_parent_data),
137 		0, 0x28, 0x128, 1, 2,
138 		TMPV770X_RESET_PISPI1, },
139 	{ TMPV770X_CLK_PISPI2, "pispi2",
140 		clks_parent_data, ARRAY_SIZE(clks_parent_data),
141 		0, 0x28, 0x128, 2, 2,
142 		TMPV770X_RESET_PISPI2, },
143 	{ TMPV770X_CLK_PISPI3, "pispi3",
144 		clks_parent_data, ARRAY_SIZE(clks_parent_data),
145 		0, 0x28, 0x128, 3, 2,
146 		TMPV770X_RESET_PISPI3,},
147 	{ TMPV770X_CLK_PISPI4, "pispi4",
148 		clks_parent_data, ARRAY_SIZE(clks_parent_data),
149 		0, 0x28, 0x128, 4, 2,
150 		TMPV770X_RESET_PISPI4, },
151 	{ TMPV770X_CLK_PISPI5, "pispi5",
152 		clks_parent_data, ARRAY_SIZE(clks_parent_data),
153 		0, 0x28, 0x128, 5, 2,
154 		TMPV770X_RESET_PISPI5},
155 	{ TMPV770X_CLK_PISPI6, "pispi6",
156 		clks_parent_data, ARRAY_SIZE(clks_parent_data),
157 		0, 0x28, 0x128, 6, 2,
158 		TMPV770X_RESET_PISPI6,},
159 	{ TMPV770X_CLK_PIUART0, "piuart0",
160 		clks_parent_data, ARRAY_SIZE(clks_parent_data),
161 		//CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED, 0x2c, 0x12c, 0, 4,
162 		0, 0x2c, 0x12c, 0, 4,
163 		TMPV770X_RESET_PIUART0,},
164 	{ TMPV770X_CLK_PIUART1, "piuart1",
165 		clks_parent_data, ARRAY_SIZE(clks_parent_data),
166 		//CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED, 0x2c, 0x12c, 1, 4,
167 		0, 0x2c, 0x12c, 1, 4,
168 		TMPV770X_RESET_PIUART1, },
169 	{ TMPV770X_CLK_PIUART2, "piuart2",
170 		clks_parent_data, ARRAY_SIZE(clks_parent_data),
171 		0, 0x2c, 0x12c, 2, 4,
172 		TMPV770X_RESET_PIUART2, },
173 	{ TMPV770X_CLK_PIUART3, "piuart3",
174 		clks_parent_data, ARRAY_SIZE(clks_parent_data),
175 		0, 0x2c, 0x12c, 3, 4,
176 		TMPV770X_RESET_PIUART3, },
177 	{ TMPV770X_CLK_PII2C0, "pii2c0",
178 		clks_parent_data, ARRAY_SIZE(clks_parent_data),
179 		0, 0x30, 0x130, 0, 4,
180 		TMPV770X_RESET_PII2C0, },
181 	{ TMPV770X_CLK_PII2C1, "pii2c1",
182 		clks_parent_data, ARRAY_SIZE(clks_parent_data),
183 		0, 0x30, 0x130, 1, 4,
184 		TMPV770X_RESET_PII2C1, },
185 	{ TMPV770X_CLK_PII2C2, "pii2c2",
186 		clks_parent_data, ARRAY_SIZE(clks_parent_data),
187 		0, 0x30, 0x130, 2, 4,
188 		TMPV770X_RESET_PII2C2, },
189 	{ TMPV770X_CLK_PII2C3, "pii2c3",
190 		clks_parent_data, ARRAY_SIZE(clks_parent_data),
191 		0, 0x30, 0x130, 3, 4,
192 		TMPV770X_RESET_PII2C3,},
193 	{ TMPV770X_CLK_PII2C4, "pii2c4",
194 		clks_parent_data, ARRAY_SIZE(clks_parent_data),
195 		0, 0x30, 0x130, 4, 4,
196 		TMPV770X_RESET_PII2C4, },
197 	{ TMPV770X_CLK_PII2C5, "pii2c5",
198 		clks_parent_data, ARRAY_SIZE(clks_parent_data),
199 		0, 0x30, 0x130, 5, 4,
200 		TMPV770X_RESET_PII2C5, },
201 	{ TMPV770X_CLK_PII2C6, "pii2c6",
202 		clks_parent_data, ARRAY_SIZE(clks_parent_data),
203 		0, 0x30, 0x130, 6, 4,
204 		TMPV770X_RESET_PII2C6, },
205 	{ TMPV770X_CLK_PII2C7, "pii2c7",
206 		clks_parent_data, ARRAY_SIZE(clks_parent_data),
207 		0, 0x30, 0x130, 7, 4,
208 		TMPV770X_RESET_PII2C7, },
209 	{ TMPV770X_CLK_PII2C8, "pii2c8",
210 		clks_parent_data, ARRAY_SIZE(clks_parent_data),
211 		0, 0x30, 0x130, 8, 4,
212 		TMPV770X_RESET_PII2C8, },
213 	/* PIPCMIF */
214 	{ TMPV770X_CLK_PIPCMIF, "pipcmif",
215 		clks_parent_data, ARRAY_SIZE(clks_parent_data),
216 		0, 0x64, 0x164, 0, 4,
217 		TMPV770X_RESET_PIPCMIF, },
218 	/* PISYSTEM */
219 	{ TMPV770X_CLK_WRCK, "wrck",
220 		clks_parent_data, ARRAY_SIZE(clks_parent_data),
221 		0, 0x68, 0x168, 9, 32,
222 		NO_RESET, },
223 	{ TMPV770X_CLK_PICKMON, "pickmon",
224 		clks_parent_data, ARRAY_SIZE(clks_parent_data),
225 		0, 0x10, 0x110, 8, 4,
226 		TMPV770X_RESET_PICKMON, },
227 	{ TMPV770X_CLK_SBUSCLK, "sbusclk",
228 		clks_parent_data, ARRAY_SIZE(clks_parent_data),
229 		0, 0x14, 0x114, 0, 4,
230 		TMPV770X_RESET_SBUSCLK, },
231 	{ TMPV770X_CLK_VIIF0_CFGCLK, "csi2rx0cfg",
232 		clks_parent_data, ARRAY_SIZE(clks_parent_data),
233 		0, 0x58, 0x158, 0, 24,
234 		NO_RESET, },
235 	{ TMPV770X_CLK_VIIF0_APBCLK, "csi2rx0apb",
236 		clks_parent_data, ARRAY_SIZE(clks_parent_data),
237 		0, 0x58, 0x158, 2, 4,
238 		NO_RESET, },
239 	{ TMPV770X_CLK_VIIF1_CFGCLK, "csi2rx1cfg",
240 		clks_parent_data, ARRAY_SIZE(clks_parent_data),
241 		0, 0x58, 0x158, 4, 24,
242 		NO_RESET, },
243 	{ TMPV770X_CLK_VIIF1_APBCLK, "csi2rx1apb",
244 		clks_parent_data, ARRAY_SIZE(clks_parent_data),
245 		0, 0x58, 0x158, 6, 4,
246 		NO_RESET, },
247 };
248 
249 static const struct visconti_reset_data clk_reset_data[] = {
250 	[TMPV770X_RESET_PIETHER_2P5M]	= { 0x434, 0x534, 4, },
251 	[TMPV770X_RESET_PIETHER_25M]	= { 0x434, 0x534, 5, },
252 	[TMPV770X_RESET_PIETHER_50M]	= { 0x434, 0x534, 6, },
253 	[TMPV770X_RESET_PIETHER_125M]	= { 0x434, 0x534, 7, },
254 	[TMPV770X_RESET_HOX]		= { 0x44c, 0x54c, 0, },
255 	[TMPV770X_RESET_PCIE_MSTR]	= { 0x438, 0x538, 0, },
256 	[TMPV770X_RESET_PCIE_AUX]	= { 0x438, 0x538, 1, },
257 	[TMPV770X_RESET_PIINTC]		= { 0x408, 0x508, 0, },
258 	[TMPV770X_RESET_PIETHER_BUS]	= { 0x434, 0x534, 0, },
259 	[TMPV770X_RESET_PISPI0]		= { 0x428, 0x528, 0, },
260 	[TMPV770X_RESET_PISPI1]		= { 0x428, 0x528, 1, },
261 	[TMPV770X_RESET_PISPI2]		= { 0x428, 0x528, 2, },
262 	[TMPV770X_RESET_PISPI3]		= { 0x428, 0x528, 3, },
263 	[TMPV770X_RESET_PISPI4]		= { 0x428, 0x528, 4, },
264 	[TMPV770X_RESET_PISPI5]		= { 0x428, 0x528, 5, },
265 	[TMPV770X_RESET_PISPI6]		= { 0x428, 0x528, 6, },
266 	[TMPV770X_RESET_PIUART0]	= { 0x42c, 0x52c, 0, },
267 	[TMPV770X_RESET_PIUART1]	= { 0x42c, 0x52c, 1, },
268 	[TMPV770X_RESET_PIUART2]	= { 0x42c, 0x52c, 2, },
269 	[TMPV770X_RESET_PIUART3]	= { 0x42c, 0x52c, 3, },
270 	[TMPV770X_RESET_PII2C0]		= { 0x430, 0x530, 0, },
271 	[TMPV770X_RESET_PII2C1]		= { 0x430, 0x530, 1, },
272 	[TMPV770X_RESET_PII2C2]		= { 0x430, 0x530, 2, },
273 	[TMPV770X_RESET_PII2C3]		= { 0x430, 0x530, 3, },
274 	[TMPV770X_RESET_PII2C4]		= { 0x430, 0x530, 4, },
275 	[TMPV770X_RESET_PII2C5]		= { 0x430, 0x530, 5, },
276 	[TMPV770X_RESET_PII2C6]		= { 0x430, 0x530, 6, },
277 	[TMPV770X_RESET_PII2C7]		= { 0x430, 0x530, 7, },
278 	[TMPV770X_RESET_PII2C8]		= { 0x430, 0x530, 8, },
279 	[TMPV770X_RESET_PIPCMIF]	= { 0x464, 0x564, 0, },
280 	[TMPV770X_RESET_PICKMON]	= { 0x410, 0x510, 8, },
281 	[TMPV770X_RESET_SBUSCLK]	= { 0x414, 0x514, 0, },
282 	[TMPV770X_RESET_VIIFBS0]	= { 0x458, 0x558, 0, },
283 	[TMPV770X_RESET_VIIFBS0_APB]	= { 0x458, 0x558, 1, },
284 	[TMPV770X_RESET_VIIFBS0_L2ISP]	= { 0x458, 0x558, 16, },
285 	[TMPV770X_RESET_VIIFBS0_L1ISP]	= { 0x458, 0x558, 17, },
286 	[TMPV770X_RESET_VIIFBS1]	= { 0x458, 0x558, 4, },
287 	[TMPV770X_RESET_VIIFBS1_APB]	= { 0x458, 0x558, 5, },
288 	[TMPV770X_RESET_VIIFBS1_L2ISP]	= { 0x458, 0x558, 20, },
289 	[TMPV770X_RESET_VIIFBS1_L1ISP]	= { 0x458, 0x558, 21, },
290 };
291 
292 static int visconti_clk_probe(struct platform_device *pdev)
293 {
294 	struct device_node *np = pdev->dev.of_node;
295 	struct visconti_clk_provider *ctx;
296 	struct device *dev = &pdev->dev;
297 	struct regmap *regmap;
298 	int ret, i;
299 
300 	regmap = syscon_node_to_regmap(np);
301 	if (IS_ERR(regmap))
302 		return PTR_ERR(regmap);
303 
304 	ctx = visconti_init_clk(dev, regmap, CLKS_NR);
305 	if (IS_ERR(ctx))
306 		return PTR_ERR(ctx);
307 
308 	ret = visconti_register_reset_controller(dev, regmap, clk_reset_data,
309 						 RESETS_NR,
310 						 &visconti_reset_ops,
311 						 &tmpv770x_rst_lock);
312 	if (ret) {
313 		dev_err(dev, "Failed to register reset controller: %d\n", ret);
314 		return ret;
315 	}
316 
317 	for (i = 0; i < (ARRAY_SIZE(fixed_clk_tables)); i++)
318 		ctx->clk_data.hws[fixed_clk_tables[i].id] =
319 			clk_hw_register_fixed_factor(NULL,
320 						     fixed_clk_tables[i].name,
321 						     fixed_clk_tables[i].parent,
322 						     fixed_clk_tables[i].flag,
323 						     fixed_clk_tables[i].mult,
324 						     fixed_clk_tables[i].div);
325 
326 	ret = visconti_clk_register_gates(ctx, clk_gate_tables,
327 				    ARRAY_SIZE(clk_gate_tables), clk_reset_data,
328 				    &tmpv770x_clk_lock);
329 	if (ret) {
330 		dev_err(dev, "Failed to register main clock gate: %d\n", ret);
331 		return ret;
332 	}
333 
334 	ret = visconti_clk_register_gates(ctx, pietherpll_clk_gate_tables,
335 				    ARRAY_SIZE(pietherpll_clk_gate_tables),
336 				    clk_reset_data, &tmpv770x_clk_lock);
337 	if (ret) {
338 		dev_err(dev, "Failed to register pietherpll clock gate: %d\n", ret);
339 		return ret;
340 	}
341 
342 	ret = visconti_clk_register_gates(ctx, pidnnpll_clk_gate_tables,
343 				    ARRAY_SIZE(pidnnpll_clk_gate_tables),
344 				    clk_reset_data, &tmpv770x_clk_lock);
345 	if (ret) {
346 		dev_err(dev, "Failed to register pidnnpll clock gate: %d\n", ret);
347 		return ret;
348 	}
349 
350 	return of_clk_add_hw_provider(np, of_clk_hw_onecell_get, &ctx->clk_data);
351 }
352 
353 static const struct of_device_id visconti_clk_ids[] = {
354 	{ .compatible = "toshiba,tmpv7708-pismu", },
355 	{ }
356 };
357 
358 static struct platform_driver visconti_clk_driver = {
359 	.probe  = visconti_clk_probe,
360 	.driver = {
361 		.name   = "visconti-clk",
362 		.of_match_table = visconti_clk_ids,
363 	},
364 };
365 
366 builtin_platform_driver(visconti_clk_driver);
367