xref: /linux/drivers/clk/qcom/gpucc-qcs615.c (revision 8d2b0853add1d7534dc0794e3c8e0b9e8c4ec640)
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Copyright (c) 2024, Qualcomm Innovation Center, Inc. All rights reserved.
4  */
5 
6 #include <linux/clk-provider.h>
7 #include <linux/module.h>
8 #include <linux/mod_devicetable.h>
9 #include <linux/of.h>
10 #include <linux/platform_device.h>
11 #include <linux/regmap.h>
12 
13 #include <dt-bindings/clock/qcom,qcs615-gpucc.h>
14 
15 #include "clk-alpha-pll.h"
16 #include "clk-branch.h"
17 #include "clk-pll.h"
18 #include "clk-rcg.h"
19 #include "clk-regmap.h"
20 #include "clk-regmap-divider.h"
21 #include "clk-regmap-mux.h"
22 #include "common.h"
23 #include "gdsc.h"
24 #include "reset.h"
25 
26 enum {
27 	DT_BI_TCXO,
28 	DT_GPLL0_OUT_MAIN,
29 	DT_GPLL0_OUT_MAIN_DIV,
30 };
31 
32 enum {
33 	P_BI_TCXO,
34 	P_GPLL0_OUT_MAIN,
35 	P_GPLL0_OUT_MAIN_DIV,
36 	P_GPU_CC_PLL0_2X_CLK,
37 	P_CRC_DIV_PLL0_OUT_AUX2,
38 	P_GPU_CC_PLL0_OUT_MAIN,
39 	P_GPU_CC_PLL1_OUT_AUX,
40 	P_CRC_DIV_PLL1_OUT_AUX2,
41 	P_GPU_CC_PLL1_OUT_MAIN,
42 };
43 
44 static const struct pll_vco gpu_cc_pll0_vco[] = {
45 	{ 1000000000, 2100000000, 0 },
46 };
47 
48 static struct pll_vco gpu_cc_pll1_vco[] = {
49 	{ 500000000,  1000000000, 2 },
50 };
51 
52 /* 1020MHz configuration VCO - 0 */
53 static struct alpha_pll_config gpu_cc_pll0_config = {
54 	.l = 0x35,
55 	.config_ctl_val = 0x4001055b,
56 	.test_ctl_hi_val = 0x1,
57 	.test_ctl_hi_mask = 0x1,
58 	.alpha_hi = 0x20,
59 	.alpha = 0x00,
60 	.alpha_en_mask = BIT(24),
61 	.vco_val = 0x0,
62 	.vco_mask = GENMASK(21, 20),
63 	.aux2_output_mask = BIT(2),
64 };
65 
66 static struct clk_alpha_pll gpu_cc_pll0 = {
67 	.offset = 0x0,
68 	.config = &gpu_cc_pll0_config,
69 	.vco_table = gpu_cc_pll0_vco,
70 	.num_vco = ARRAY_SIZE(gpu_cc_pll0_vco),
71 	.regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_DEFAULT],
72 	.clkr = {
73 		.hw.init = &(const struct clk_init_data) {
74 			.name = "gpu_cc_pll0",
75 			.parent_data = &(const struct clk_parent_data) {
76 				.index = DT_BI_TCXO,
77 			},
78 			.num_parents = 1,
79 			.ops = &clk_alpha_pll_slew_ops,
80 		},
81 	},
82 };
83 
84 /* 930MHz configuration VCO - 2 */
85 static struct alpha_pll_config gpu_cc_pll1_config = {
86 	.l = 0x30,
87 	.config_ctl_val = 0x4001055b,
88 	.test_ctl_hi_val = 0x1,
89 	.test_ctl_hi_mask = 0x1,
90 	.alpha_hi = 0x70,
91 	.alpha = 0x00,
92 	.alpha_en_mask = BIT(24),
93 	.vco_val = BIT(21),
94 	.vco_mask = GENMASK(21, 20),
95 	.aux2_output_mask = BIT(2),
96 };
97 
98 static struct clk_alpha_pll gpu_cc_pll1 = {
99 	.offset = 0x100,
100 	.config = &gpu_cc_pll1_config,
101 	.vco_table = gpu_cc_pll1_vco,
102 	.num_vco = ARRAY_SIZE(gpu_cc_pll1_vco),
103 	.regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_DEFAULT],
104 	.clkr = {
105 		.hw.init = &(const struct clk_init_data) {
106 			.name = "gpu_cc_pll1",
107 			.parent_data = &(const struct clk_parent_data) {
108 				.index = DT_BI_TCXO,
109 			},
110 			.num_parents = 1,
111 			.ops = &clk_alpha_pll_slew_ops,
112 		},
113 	}
114 };
115 
116 /* Clock Ramp Controller */
117 static struct clk_fixed_factor crc_div_pll0 = {
118 	.mult = 1,
119 	.div = 2,
120 	.hw.init = &(struct clk_init_data){
121 		.name = "crc_div_pll0",
122 			.parent_data = &(const struct clk_parent_data){
123 				.hw = &gpu_cc_pll0.clkr.hw,
124 			},
125 		.num_parents = 1,
126 		.flags = CLK_SET_RATE_PARENT,
127 		.ops = &clk_fixed_factor_ops,
128 	},
129 };
130 
131 /* Clock Ramp Controller */
132 static struct clk_fixed_factor crc_div_pll1 = {
133 	.mult = 1,
134 	.div = 2,
135 	.hw.init = &(struct clk_init_data){
136 		.name = "crc_div_pll1",
137 			.parent_data = &(const struct clk_parent_data){
138 				.hw = &gpu_cc_pll1.clkr.hw,
139 			},
140 		.num_parents = 1,
141 		.flags = CLK_SET_RATE_PARENT,
142 		.ops = &clk_fixed_factor_ops,
143 	},
144 };
145 
146 static const struct parent_map gpu_cc_parent_map_0[] = {
147 	{ P_BI_TCXO, 0 },
148 	{ P_GPU_CC_PLL0_OUT_MAIN, 1 },
149 	{ P_GPU_CC_PLL1_OUT_MAIN, 3 },
150 	{ P_GPLL0_OUT_MAIN, 5 },
151 	{ P_GPLL0_OUT_MAIN_DIV, 6 },
152 };
153 
154 static const struct clk_parent_data gpu_cc_parent_data_0[] = {
155 	{ .index = DT_BI_TCXO },
156 	{ .hw = &gpu_cc_pll0.clkr.hw },
157 	{ .hw = &gpu_cc_pll1.clkr.hw },
158 	{ .index = DT_GPLL0_OUT_MAIN },
159 	{ .index = DT_GPLL0_OUT_MAIN_DIV },
160 };
161 
162 static const struct parent_map gpu_cc_parent_map_1[] = {
163 	{ P_BI_TCXO, 0 },
164 	{ P_GPU_CC_PLL0_2X_CLK, 1 },
165 	{ P_CRC_DIV_PLL0_OUT_AUX2, 2 },
166 	{ P_GPU_CC_PLL1_OUT_AUX, 3 },
167 	{ P_CRC_DIV_PLL1_OUT_AUX2, 4 },
168 	{ P_GPLL0_OUT_MAIN, 5 },
169 };
170 
171 static const struct clk_parent_data gpu_cc_parent_data_1[] = {
172 	{ .index = DT_BI_TCXO },
173 	{ .hw = &gpu_cc_pll0.clkr.hw },
174 	{ .hw = &crc_div_pll0.hw },
175 	{ .hw = &gpu_cc_pll1.clkr.hw },
176 	{ .hw = &crc_div_pll1.hw },
177 	{ .index = DT_GPLL0_OUT_MAIN },
178 };
179 
180 static const struct freq_tbl ftbl_gpu_cc_gmu_clk_src[] = {
181 	F(200000000, P_GPLL0_OUT_MAIN, 3, 0, 0),
182 	{ }
183 };
184 
185 static struct clk_rcg2 gpu_cc_gmu_clk_src = {
186 	.cmd_rcgr = 0x1120,
187 	.mnd_width = 0,
188 	.hid_width = 5,
189 	.parent_map = gpu_cc_parent_map_0,
190 	.freq_tbl = ftbl_gpu_cc_gmu_clk_src,
191 	.clkr.hw.init = &(const struct clk_init_data) {
192 		.name = "gpu_cc_gmu_clk_src",
193 		.parent_data = gpu_cc_parent_data_0,
194 		.num_parents = ARRAY_SIZE(gpu_cc_parent_data_0),
195 		.ops = &clk_rcg2_shared_ops,
196 	},
197 };
198 
199 static const struct freq_tbl ftbl_gpu_cc_gx_gfx3d_clk_src[] = {
200 	F(290000000, P_CRC_DIV_PLL1_OUT_AUX2, 1, 0, 0),
201 	F(350000000, P_CRC_DIV_PLL1_OUT_AUX2, 1, 0, 0),
202 	F(435000000, P_CRC_DIV_PLL1_OUT_AUX2, 1, 0, 0),
203 	F(500000000, P_CRC_DIV_PLL0_OUT_AUX2, 1, 0, 0),
204 	F(550000000, P_CRC_DIV_PLL0_OUT_AUX2, 1, 0, 0),
205 	F(650000000, P_CRC_DIV_PLL0_OUT_AUX2, 1, 0, 0),
206 	F(700000000, P_CRC_DIV_PLL0_OUT_AUX2, 1, 0, 0),
207 	F(745000000, P_CRC_DIV_PLL0_OUT_AUX2, 1, 0, 0),
208 	F(845000000, P_CRC_DIV_PLL0_OUT_AUX2, 1, 0, 0),
209 	F(895000000, P_CRC_DIV_PLL0_OUT_AUX2, 1, 0, 0),
210 	{ }
211 };
212 
213 static struct clk_rcg2 gpu_cc_gx_gfx3d_clk_src = {
214 	.cmd_rcgr = 0x101c,
215 	.mnd_width = 0,
216 	.hid_width = 5,
217 	.parent_map = gpu_cc_parent_map_1,
218 	.freq_tbl = ftbl_gpu_cc_gx_gfx3d_clk_src,
219 	.clkr.hw.init = &(const struct clk_init_data) {
220 		.name = "gpu_cc_gx_gfx3d_clk_src",
221 		.parent_data = gpu_cc_parent_data_1,
222 		.num_parents = ARRAY_SIZE(gpu_cc_parent_data_1),
223 		.flags = CLK_SET_RATE_PARENT | CLK_OPS_PARENT_ENABLE,
224 		.ops = &clk_rcg2_shared_ops,
225 	},
226 };
227 
228 static struct clk_branch gpu_cc_crc_ahb_clk = {
229 	.halt_reg = 0x107c,
230 	.halt_check = BRANCH_HALT_VOTED,
231 	.clkr = {
232 		.enable_reg = 0x107c,
233 		.enable_mask = BIT(0),
234 		.hw.init = &(const struct clk_init_data) {
235 			.name = "gpu_cc_crc_ahb_clk",
236 			.ops = &clk_branch2_ops,
237 		},
238 	},
239 };
240 
241 static struct clk_branch gpu_cc_cx_gfx3d_clk = {
242 	.halt_reg = 0x10a4,
243 	.halt_check = BRANCH_HALT_DELAY,
244 	.clkr = {
245 		.enable_reg = 0x10a4,
246 		.enable_mask = BIT(0),
247 		.hw.init = &(const struct clk_init_data) {
248 			.name = "gpu_cc_cx_gfx3d_clk",
249 			.parent_hws = (const struct clk_hw*[]) {
250 				&gpu_cc_gx_gfx3d_clk_src.clkr.hw,
251 			},
252 			.num_parents = 1,
253 			.flags = CLK_SET_RATE_PARENT,
254 			.ops = &clk_branch2_ops,
255 		},
256 	},
257 };
258 
259 static struct clk_branch gpu_cc_cx_gfx3d_slv_clk = {
260 	.halt_reg = 0x10a8,
261 	.halt_check = BRANCH_HALT_DELAY,
262 	.clkr = {
263 		.enable_reg = 0x10a8,
264 		.enable_mask = BIT(0),
265 		.hw.init = &(const struct clk_init_data) {
266 			.name = "gpu_cc_cx_gfx3d_slv_clk",
267 			.parent_hws = (const struct clk_hw*[]) {
268 				&gpu_cc_gx_gfx3d_clk_src.clkr.hw,
269 			},
270 			.num_parents = 1,
271 			.flags = CLK_SET_RATE_PARENT,
272 			.ops = &clk_branch2_ops,
273 		},
274 	},
275 };
276 
277 static struct clk_branch gpu_cc_cx_gmu_clk = {
278 	.halt_reg = 0x1098,
279 	.halt_check = BRANCH_HALT,
280 	.clkr = {
281 		.enable_reg = 0x1098,
282 		.enable_mask = BIT(0),
283 		.hw.init = &(const struct clk_init_data) {
284 			.name = "gpu_cc_cx_gmu_clk",
285 			.parent_hws = (const struct clk_hw*[]) {
286 				&gpu_cc_gmu_clk_src.clkr.hw,
287 			},
288 			.num_parents = 1,
289 			.flags = CLK_SET_RATE_PARENT,
290 			.ops = &clk_branch2_ops,
291 		},
292 	},
293 };
294 
295 static struct clk_branch gpu_cc_cx_snoc_dvm_clk = {
296 	.halt_reg = 0x108c,
297 	.halt_check = BRANCH_HALT_VOTED,
298 	.clkr = {
299 		.enable_reg = 0x108c,
300 		.enable_mask = BIT(0),
301 		.hw.init = &(const struct clk_init_data) {
302 			.name = "gpu_cc_cx_snoc_dvm_clk",
303 			.ops = &clk_branch2_ops,
304 		},
305 	},
306 };
307 
308 static struct clk_branch gpu_cc_cxo_aon_clk = {
309 	.halt_reg = 0x1004,
310 	.halt_check = BRANCH_HALT_VOTED,
311 	.clkr = {
312 		.enable_reg = 0x1004,
313 		.enable_mask = BIT(0),
314 		.hw.init = &(struct clk_init_data){
315 			.name = "gpu_cc_cxo_aon_clk",
316 			.ops = &clk_branch2_ops,
317 		},
318 	},
319 };
320 
321 static struct clk_branch gpu_cc_cxo_clk = {
322 	.halt_reg = 0x109c,
323 	.halt_check = BRANCH_HALT,
324 	.clkr = {
325 		.enable_reg = 0x109c,
326 		.enable_mask = BIT(0),
327 		.hw.init = &(const struct clk_init_data) {
328 			.name = "gpu_cc_cxo_clk",
329 			.ops = &clk_branch2_ops,
330 		},
331 	},
332 };
333 
334 static struct clk_branch gpu_cc_gx_gfx3d_clk = {
335 	.halt_reg = 0x1054,
336 	.halt_check = BRANCH_HALT_SKIP,
337 	.clkr = {
338 		.enable_reg = 0x1054,
339 		.enable_mask = BIT(0),
340 		.hw.init = &(const struct clk_init_data) {
341 			.name = "gpu_cc_gx_gfx3d_clk",
342 			.parent_hws = (const struct clk_hw*[]) {
343 				&gpu_cc_gx_gfx3d_clk_src.clkr.hw,
344 			},
345 			.num_parents = 1,
346 			.flags = CLK_SET_RATE_PARENT,
347 			.ops = &clk_branch2_ops,
348 		},
349 	},
350 };
351 
352 static struct clk_branch gpu_cc_gx_gmu_clk = {
353 	.halt_reg = 0x1064,
354 	.halt_check = BRANCH_HALT,
355 	.clkr = {
356 		.enable_reg = 0x1064,
357 		.enable_mask = BIT(0),
358 		.hw.init = &(const struct clk_init_data) {
359 			.name = "gpu_cc_gx_gmu_clk",
360 			.parent_hws = (const struct clk_hw*[]) {
361 				&gpu_cc_gmu_clk_src.clkr.hw,
362 			},
363 			.num_parents = 1,
364 			.flags = CLK_SET_RATE_PARENT,
365 			.ops = &clk_branch2_ops,
366 		},
367 	},
368 };
369 
370 static struct clk_branch gpu_cc_hlos1_vote_gpu_smmu_clk = {
371 	.halt_reg = 0x5000,
372 	.halt_check = BRANCH_VOTED,
373 	.clkr = {
374 		.enable_reg = 0x5000,
375 		.enable_mask = BIT(0),
376 		.hw.init = &(const struct clk_init_data) {
377 			.name = "gpu_cc_hlos1_vote_gpu_smmu_clk",
378 			.ops = &clk_branch2_ops,
379 		},
380 	},
381 };
382 
383 static struct clk_branch gpu_cc_sleep_clk = {
384 	.halt_reg = 0x1090,
385 	.halt_check = BRANCH_HALT_VOTED,
386 	.clkr = {
387 		.enable_reg = 0x1090,
388 		.enable_mask = BIT(0),
389 		.hw.init = &(const struct clk_init_data) {
390 			.name = "gpu_cc_sleep_clk",
391 			.ops = &clk_branch2_ops,
392 		},
393 	},
394 };
395 
396 static struct clk_hw *gpu_cc_qcs615_hws[] = {
397 	[CRC_DIV_PLL0] = &crc_div_pll0.hw,
398 	[CRC_DIV_PLL1] = &crc_div_pll1.hw,
399 };
400 
401 static struct gdsc cx_gdsc = {
402 	.gdscr = 0x106c,
403 	.gds_hw_ctrl = 0x1540,
404 	.en_rest_wait_val = 0x2,
405 	.en_few_wait_val = 0x2,
406 	.clk_dis_wait_val = 0x8,
407 	.pd = {
408 		.name = "cx_gdsc",
409 	},
410 	.pwrsts = PWRSTS_OFF_ON,
411 	.flags = POLL_CFG_GDSCR,
412 };
413 
414 static struct gdsc gx_gdsc = {
415 	.gdscr = 0x100c,
416 	.en_rest_wait_val = 0x2,
417 	.en_few_wait_val = 0x2,
418 	.clk_dis_wait_val = 0x2,
419 	.pd = {
420 		.name = "gx_gdsc",
421 	},
422 	.pwrsts = PWRSTS_OFF_ON,
423 	.flags = POLL_CFG_GDSCR,
424 };
425 
426 static struct clk_regmap *gpu_cc_qcs615_clocks[] = {
427 	[GPU_CC_CRC_AHB_CLK] = &gpu_cc_crc_ahb_clk.clkr,
428 	[GPU_CC_CX_GFX3D_CLK] = &gpu_cc_cx_gfx3d_clk.clkr,
429 	[GPU_CC_CX_GFX3D_SLV_CLK] = &gpu_cc_cx_gfx3d_slv_clk.clkr,
430 	[GPU_CC_CX_GMU_CLK] = &gpu_cc_cx_gmu_clk.clkr,
431 	[GPU_CC_CX_SNOC_DVM_CLK] = &gpu_cc_cx_snoc_dvm_clk.clkr,
432 	[GPU_CC_CXO_AON_CLK] = &gpu_cc_cxo_aon_clk.clkr,
433 	[GPU_CC_CXO_CLK] = &gpu_cc_cxo_clk.clkr,
434 	[GPU_CC_GMU_CLK_SRC] = &gpu_cc_gmu_clk_src.clkr,
435 	[GPU_CC_GX_GFX3D_CLK] = &gpu_cc_gx_gfx3d_clk.clkr,
436 	[GPU_CC_GX_GFX3D_CLK_SRC] = &gpu_cc_gx_gfx3d_clk_src.clkr,
437 	[GPU_CC_GX_GMU_CLK] = &gpu_cc_gx_gmu_clk.clkr,
438 	[GPU_CC_HLOS1_VOTE_GPU_SMMU_CLK] = &gpu_cc_hlos1_vote_gpu_smmu_clk.clkr,
439 	[GPU_CC_PLL0] = &gpu_cc_pll0.clkr,
440 	[GPU_CC_PLL1] = &gpu_cc_pll1.clkr,
441 	[GPU_CC_SLEEP_CLK] = &gpu_cc_sleep_clk.clkr,
442 };
443 
444 static struct gdsc *gpu_cc_qcs615_gdscs[] = {
445 	[CX_GDSC] = &cx_gdsc,
446 	[GX_GDSC] = &gx_gdsc,
447 };
448 
449 static const struct qcom_reset_map gpu_cc_qcs615_resets[] = {
450 	[GPU_CC_CX_BCR] = { 0x1068 },
451 	[GPU_CC_GFX3D_AON_BCR] = { 0x10a0 },
452 	[GPU_CC_GMU_BCR] = { 0x111c },
453 	[GPU_CC_GX_BCR] = { 0x1008 },
454 	[GPU_CC_XO_BCR] = { 0x1000 },
455 };
456 
457 static struct clk_alpha_pll *gpu_cc_qcs615_plls[] = {
458 	&gpu_cc_pll0,
459 	&gpu_cc_pll1,
460 };
461 
462 static u32 gpu_cc_qcs615_critical_cbcrs[] = {
463 	0x1078, /* GPU_CC_AHB_CLK */
464 };
465 
466 static const struct regmap_config gpu_cc_qcs615_regmap_config = {
467 	.reg_bits = 32,
468 	.reg_stride = 4,
469 	.val_bits = 32,
470 	.max_register = 0x7008,
471 	.fast_io = true,
472 };
473 
474 static void clk_qcs615_regs_crc_configure(struct device *dev, struct regmap *regmap)
475 {
476 	/* Recommended WAKEUP/SLEEP settings for the gpu_cc_cx_gmu_clk */
477 	regmap_update_bits(regmap, gpu_cc_cx_gmu_clk.clkr.enable_reg, 0xff0, 0xff0);
478 
479 	/*
480 	 * After POR, Clock Ramp Controller(CRC) will be in bypass mode.
481 	 * Software needs to do the following operation to enable the CRC
482 	 * for GFX3D clock and divide the input clock by div by 2.
483 	 */
484 	regmap_update_bits(regmap, 0x1028, 0x00015011, 0x00015011);
485 	regmap_update_bits(regmap, 0x1024, 0x00800000, 0x00800000);
486 }
487 
488 static struct qcom_cc_driver_data gpu_cc_qcs615_driver_data = {
489 	.alpha_plls = gpu_cc_qcs615_plls,
490 	.num_alpha_plls = ARRAY_SIZE(gpu_cc_qcs615_plls),
491 	.clk_cbcrs = gpu_cc_qcs615_critical_cbcrs,
492 	.num_clk_cbcrs = ARRAY_SIZE(gpu_cc_qcs615_critical_cbcrs),
493 	.clk_regs_configure = clk_qcs615_regs_crc_configure,
494 };
495 
496 static const struct qcom_cc_desc gpu_cc_qcs615_desc = {
497 	.config = &gpu_cc_qcs615_regmap_config,
498 	.clks = gpu_cc_qcs615_clocks,
499 	.num_clks = ARRAY_SIZE(gpu_cc_qcs615_clocks),
500 	.clk_hws = gpu_cc_qcs615_hws,
501 	.num_clk_hws = ARRAY_SIZE(gpu_cc_qcs615_hws),
502 	.resets = gpu_cc_qcs615_resets,
503 	.num_resets = ARRAY_SIZE(gpu_cc_qcs615_resets),
504 	.gdscs = gpu_cc_qcs615_gdscs,
505 	.num_gdscs = ARRAY_SIZE(gpu_cc_qcs615_gdscs),
506 	.driver_data = &gpu_cc_qcs615_driver_data,
507 };
508 
509 static const struct of_device_id gpu_cc_qcs615_match_table[] = {
510 	{ .compatible = "qcom,qcs615-gpucc" },
511 	{ }
512 };
513 MODULE_DEVICE_TABLE(of, gpu_cc_qcs615_match_table);
514 
515 static int gpu_cc_qcs615_probe(struct platform_device *pdev)
516 {
517 	return qcom_cc_probe(pdev, &gpu_cc_qcs615_desc);
518 }
519 
520 static struct platform_driver gpu_cc_qcs615_driver = {
521 	.probe = gpu_cc_qcs615_probe,
522 	.driver = {
523 		.name = "gpucc-qcs615",
524 		.of_match_table = gpu_cc_qcs615_match_table,
525 	},
526 };
527 
528 module_platform_driver(gpu_cc_qcs615_driver);
529 
530 MODULE_DESCRIPTION("QTI GPUCC QCS615 Driver");
531 MODULE_LICENSE("GPL");
532