1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (c) 2021 MediaTek Inc.
4 * Author: Sam Shih <sam.shih@mediatek.com>
5 * Author: Wenzhen Yu <wenzhen.yu@mediatek.com>
6 * Author: Jianhui Zhao <zhaojh329@gmail.com>
7 */
8
9
10#include <linux/clk-provider.h>
11#include <linux/mod_devicetable.h>
12#include <linux/platform_device.h>
13#include "clk-mtk.h"
14#include "clk-gate.h"
15#include "clk-mux.h"
16
17#include <dt-bindings/clock/mediatek,mt7981-clk.h>
18#include <linux/clk.h>
19
20static DEFINE_SPINLOCK(mt7981_clk_lock);
21
22static const struct mtk_fixed_factor top_divs[] = {
23 FACTOR(CLK_TOP_CB_CKSQ_40M, "cb_cksq_40m", "clkxtal", 1, 1),
24 FACTOR(CLK_TOP_CB_M_416M, "cb_m_416m", "mpll", 1, 1),
25 FACTOR(CLK_TOP_CB_M_D2, "cb_m_d2", "mpll", 1, 2),
26 FACTOR(CLK_TOP_CB_M_D3, "cb_m_d3", "mpll", 1, 3),
27 FACTOR(CLK_TOP_M_D3_D2, "m_d3_d2", "mpll", 1, 2),
28 FACTOR(CLK_TOP_CB_M_D4, "cb_m_d4", "mpll", 1, 4),
29 FACTOR(CLK_TOP_CB_M_D8, "cb_m_d8", "mpll", 1, 8),
30 FACTOR(CLK_TOP_M_D8_D2, "m_d8_d2", "mpll", 1, 16),
31 FACTOR(CLK_TOP_CB_MM_720M, "cb_mm_720m", "mmpll", 1, 1),
32 FACTOR(CLK_TOP_CB_MM_D2, "cb_mm_d2", "mmpll", 1, 2),
33 FACTOR(CLK_TOP_CB_MM_D3, "cb_mm_d3", "mmpll", 1, 3),
34 FACTOR(CLK_TOP_CB_MM_D3_D5, "cb_mm_d3_d5", "mmpll", 1, 15),
35 FACTOR(CLK_TOP_CB_MM_D4, "cb_mm_d4", "mmpll", 1, 4),
36 FACTOR(CLK_TOP_CB_MM_D6, "cb_mm_d6", "mmpll", 1, 6),
37 FACTOR(CLK_TOP_MM_D6_D2, "mm_d6_d2", "mmpll", 1, 12),
38 FACTOR(CLK_TOP_CB_MM_D8, "cb_mm_d8", "mmpll", 1, 8),
39 FACTOR(CLK_TOP_CB_APLL2_196M, "cb_apll2_196m", "apll2", 1, 1),
40 FACTOR(CLK_TOP_APLL2_D2, "apll2_d2", "apll2", 1, 2),
41 FACTOR(CLK_TOP_APLL2_D4, "apll2_d4", "apll2", 1, 4),
42 FACTOR(CLK_TOP_NET1_2500M, "net1_2500m", "net1pll", 1, 1),
43 FACTOR(CLK_TOP_CB_NET1_D4, "cb_net1_d4", "net1pll", 1, 4),
44 FACTOR(CLK_TOP_CB_NET1_D5, "cb_net1_d5", "net1pll", 1, 5),
45 FACTOR(CLK_TOP_NET1_D5_D2, "net1_d5_d2", "net1pll", 1, 10),
46 FACTOR(CLK_TOP_NET1_D5_D4, "net1_d5_d4", "net1pll", 1, 20),
47 FACTOR(CLK_TOP_CB_NET1_D8, "cb_net1_d8", "net1pll", 1, 8),
48 FACTOR(CLK_TOP_NET1_D8_D2, "net1_d8_d2", "net1pll", 1, 16),
49 FACTOR(CLK_TOP_NET1_D8_D4, "net1_d8_d4", "net1pll", 1, 32),
50 FACTOR(CLK_TOP_CB_NET2_800M, "cb_net2_800m", "net2pll", 1, 1),
51 FACTOR(CLK_TOP_CB_NET2_D2, "cb_net2_d2", "net2pll", 1, 2),
52 FACTOR(CLK_TOP_CB_NET2_D4, "cb_net2_d4", "net2pll", 1, 4),
53 FACTOR(CLK_TOP_NET2_D4_D2, "net2_d4_d2", "net2pll", 1, 8),
54 FACTOR(CLK_TOP_NET2_D4_D4, "net2_d4_d4", "net2pll", 1, 16),
55 FACTOR(CLK_TOP_CB_NET2_D6, "cb_net2_d6", "net2pll", 1, 6),
56 FACTOR(CLK_TOP_CB_WEDMCU_208M, "cb_wedmcu_208m", "wedmcupll", 1, 1),
57 FACTOR(CLK_TOP_CB_SGM_325M, "cb_sgm_325m", "sgmpll", 1, 1),
58 FACTOR(CLK_TOP_CKSQ_40M_D2, "cksq_40m_d2", "cb_cksq_40m", 1, 2),
59 FACTOR(CLK_TOP_CB_RTC_32K, "cb_rtc_32k", "cb_cksq_40m", 1, 1250),
60 FACTOR(CLK_TOP_CB_RTC_32P7K, "cb_rtc_32p7k", "cb_cksq_40m", 1, 1220),
61 FACTOR(CLK_TOP_USB_TX250M, "usb_tx250m", "cb_cksq_40m", 1, 1),
62 FACTOR(CLK_TOP_FAUD, "faud", "aud_sel", 1, 1),
63 FACTOR(CLK_TOP_NFI1X, "nfi1x", "nfi1x_sel", 1, 1),
64 FACTOR(CLK_TOP_USB_EQ_RX250M, "usb_eq_rx250m", "cb_cksq_40m", 1, 1),
65 FACTOR(CLK_TOP_USB_CDR_CK, "usb_cdr", "cb_cksq_40m", 1, 1),
66 FACTOR(CLK_TOP_USB_LN0_CK, "usb_ln0", "cb_cksq_40m", 1, 1),
67 FACTOR(CLK_TOP_SPINFI_BCK, "spinfi_bck", "spinfi_sel", 1, 1),
68 FACTOR(CLK_TOP_SPI, "spi", "spi_sel", 1, 1),
69 FACTOR(CLK_TOP_SPIM_MST, "spim_mst", "spim_mst_sel", 1, 1),
70 FACTOR(CLK_TOP_UART_BCK, "uart_bck", "uart_sel", 1, 1),
71 FACTOR(CLK_TOP_PWM_BCK, "pwm_bck", "pwm_sel", 1, 1),
72 FACTOR(CLK_TOP_I2C_BCK, "i2c_bck", "i2c_sel", 1, 1),
73 FACTOR(CLK_TOP_PEXTP_TL, "pextp_tl", "pextp_tl_ck_sel", 1, 1),
74 FACTOR(CLK_TOP_EMMC_208M, "emmc_208m", "emmc_208m_sel", 1, 1),
75 FACTOR(CLK_TOP_EMMC_400M, "emmc_400m", "emmc_400m_sel", 1, 1),
76 FACTOR(CLK_TOP_DRAMC_REF, "dramc_ref", "dramc_sel", 1, 1),
77 FACTOR(CLK_TOP_DRAMC_MD32, "dramc_md32", "dramc_md32_sel", 1, 1),
78 FACTOR(CLK_TOP_SYSAXI, "sysaxi", "sysaxi_sel", 1, 1),
79 FACTOR(CLK_TOP_SYSAPB, "sysapb", "sysapb_sel", 1, 1),
80 FACTOR(CLK_TOP_ARM_DB_MAIN, "arm_db_main", "arm_db_main_sel", 1, 1),
81 FACTOR(CLK_TOP_AP2CNN_HOST, "ap2cnn_host", "ap2cnn_host_sel", 1, 1),
82 FACTOR(CLK_TOP_NETSYS, "netsys", "netsys_sel", 1, 1),
83 FACTOR(CLK_TOP_NETSYS_500M, "netsys_500m", "netsys_500m_sel", 1, 1),
84 FACTOR(CLK_TOP_NETSYS_WED_MCU, "netsys_wed_mcu", "netsys_mcu_sel", 1, 1),
85 FACTOR(CLK_TOP_NETSYS_2X, "netsys_2x", "netsys_2x_sel", 1, 1),
86 FACTOR(CLK_TOP_SGM_325M, "sgm_325m", "sgm_325m_sel", 1, 1),
87 FACTOR(CLK_TOP_SGM_REG, "sgm_reg", "sgm_reg_sel", 1, 1),
88 FACTOR(CLK_TOP_F26M, "csw_f26m", "csw_f26m_sel", 1, 1),
89 FACTOR(CLK_TOP_EIP97B, "eip97b", "eip97b_sel", 1, 1),
90 FACTOR(CLK_TOP_USB3_PHY, "usb3_phy", "usb3_phy_sel", 1, 1),
91 FACTOR(CLK_TOP_AUD, "aud", "faud", 1, 1),
92 FACTOR(CLK_TOP_A1SYS, "a1sys", "a1sys_sel", 1, 1),
93 FACTOR(CLK_TOP_AUD_L, "aud_l", "aud_l_sel", 1, 1),
94 FACTOR(CLK_TOP_A_TUNER, "a_tuner", "a_tuner_sel", 1, 1),
95 FACTOR(CLK_TOP_U2U3_REF, "u2u3_ref", "u2u3_sel", 1, 1),
96 FACTOR(CLK_TOP_U2U3_SYS, "u2u3_sys", "u2u3_sys_sel", 1, 1),
97 FACTOR(CLK_TOP_U2U3_XHCI, "u2u3_xhci", "u2u3_xhci_sel", 1, 1),
98 FACTOR(CLK_TOP_USB_FRMCNT, "usb_frmcnt", "usb_frmcnt_sel", 1, 1),
99};
100
101static const char * const nfi1x_parents[] __initconst = {
102 "cb_cksq_40m",
103 "cb_mm_d4",
104 "net1_d8_d2",
105 "cb_net2_d6",
106 "cb_m_d4",
107 "cb_mm_d8",
108 "net1_d8_d4",
109 "cb_m_d8"
110};
111
112static const char * const spinfi_parents[] __initconst = {
113 "cksq_40m_d2",
114 "cb_cksq_40m",
115 "net1_d5_d4",
116 "cb_m_d4",
117 "cb_mm_d8",
118 "net1_d8_d4",
119 "mm_d6_d2",
120 "cb_m_d8"
121};
122
123static const char * const spi_parents[] __initconst = {
124 "cb_cksq_40m",
125 "cb_m_d2",
126 "cb_mm_d4",
127 "net1_d8_d2",
128 "cb_net2_d6",
129 "net1_d5_d4",
130 "cb_m_d4",
131 "net1_d8_d4"
132};
133
134static const char * const uart_parents[] __initconst = {
135 "cb_cksq_40m",
136 "cb_m_d8",
137 "m_d8_d2"
138};
139
140static const char * const pwm_parents[] __initconst = {
141 "cb_cksq_40m",
142 "net1_d8_d2",
143 "net1_d5_d4",
144 "cb_m_d4",
145 "m_d8_d2",
146 "cb_rtc_32k"
147};
148
149static const char * const i2c_parents[] __initconst = {
150 "cb_cksq_40m",
151 "net1_d5_d4",
152 "cb_m_d4",
153 "net1_d8_d4"
154};
155
156static const char * const pextp_tl_ck_parents[] __initconst = {
157 "cb_cksq_40m",
158 "net1_d5_d4",
159 "cb_m_d4",
160 "cb_rtc_32k"
161};
162
163static const char * const emmc_208m_parents[] __initconst = {
164 "cb_cksq_40m",
165 "cb_m_d2",
166 "cb_net2_d4",
167 "cb_apll2_196m",
168 "cb_mm_d4",
169 "net1_d8_d2",
170 "cb_mm_d6"
171};
172
173static const char * const emmc_400m_parents[] __initconst = {
174 "cb_cksq_40m",
175 "cb_net2_d2",
176 "cb_mm_d2",
177 "cb_net2_d2"
178};
179
180static const char * const csw_f26m_parents[] __initconst = {
181 "cksq_40m_d2",
182 "m_d8_d2"
183};
184
185static const char * const dramc_md32_parents[] __initconst = {
186 "cb_cksq_40m",
187 "cb_m_d2",
188 "cb_wedmcu_208m"
189};
190
191static const char * const sysaxi_parents[] __initconst = {
192 "cb_cksq_40m",
193 "net1_d8_d2"
194};
195
196static const char * const sysapb_parents[] __initconst = {
197 "cb_cksq_40m",
198 "m_d3_d2"
199};
200
201static const char * const arm_db_main_parents[] __initconst = {
202 "cb_cksq_40m",
203 "cb_net2_d6"
204};
205
206static const char * const ap2cnn_host_parents[] __initconst = {
207 "cb_cksq_40m",
208 "net1_d8_d4"
209};
210
211static const char * const netsys_parents[] __initconst = {
212 "cb_cksq_40m",
213 "cb_mm_d2"
214};
215
216static const char * const netsys_500m_parents[] __initconst = {
217 "cb_cksq_40m",
218 "cb_net1_d5"
219};
220
221static const char * const netsys_mcu_parents[] __initconst = {
222 "cb_cksq_40m",
223 "cb_mm_720m",
224 "cb_net1_d4",
225 "cb_net1_d5",
226 "cb_m_416m"
227};
228
229static const char * const netsys_2x_parents[] __initconst = {
230 "cb_cksq_40m",
231 "cb_net2_800m",
232 "cb_mm_720m"
233};
234
235static const char * const sgm_325m_parents[] __initconst = {
236 "cb_cksq_40m",
237 "cb_sgm_325m"
238};
239
240static const char * const sgm_reg_parents[] __initconst = {
241 "cb_cksq_40m",
242 "cb_net2_d4"
243};
244
245static const char * const eip97b_parents[] __initconst = {
246 "cb_cksq_40m",
247 "cb_net1_d5",
248 "cb_m_416m",
249 "cb_mm_d2",
250 "net1_d5_d2"
251};
252
253static const char * const aud_parents[] __initconst = {
254 "cb_cksq_40m",
255 "cb_apll2_196m"
256};
257
258static const char * const a1sys_parents[] __initconst = {
259 "cb_cksq_40m",
260 "apll2_d4"
261};
262
263static const char * const aud_l_parents[] __initconst = {
264 "cb_cksq_40m",
265 "cb_apll2_196m",
266 "m_d8_d2"
267};
268
269static const char * const a_tuner_parents[] __initconst = {
270 "cb_cksq_40m",
271 "apll2_d4",
272 "m_d8_d2"
273};
274
275static const char * const u2u3_parents[] __initconst = {
276 "cb_cksq_40m",
277 "m_d8_d2"
278};
279
280static const char * const u2u3_sys_parents[] __initconst = {
281 "cb_cksq_40m",
282 "net1_d5_d4"
283};
284
285static const char * const usb_frmcnt_parents[] __initconst = {
286 "cb_cksq_40m",
287 "cb_mm_d3_d5"
288};
289
290static const struct mtk_mux top_muxes[] = {
291 /* CLK_CFG_0 */
292 MUX_GATE_CLR_SET_UPD(CLK_TOP_NFI1X_SEL, "nfi1x_sel", nfi1x_parents,
293 0x000, 0x004, 0x008, 0, 3, 7, 0x1C0, 0),
294 MUX_GATE_CLR_SET_UPD(CLK_TOP_SPINFI_SEL, "spinfi_sel", spinfi_parents,
295 0x000, 0x004, 0x008, 8, 3, 15, 0x1C0, 1),
296 MUX_GATE_CLR_SET_UPD(CLK_TOP_SPI_SEL, "spi_sel", spi_parents,
297 0x000, 0x004, 0x008, 16, 3, 23, 0x1C0, 2),
298 MUX_GATE_CLR_SET_UPD(CLK_TOP_SPIM_MST_SEL, "spim_mst_sel", spi_parents,
299 0x000, 0x004, 0x008, 24, 3, 31, 0x1C0, 3),
300 /* CLK_CFG_1 */
301 MUX_GATE_CLR_SET_UPD(CLK_TOP_UART_SEL, "uart_sel", uart_parents,
302 0x010, 0x014, 0x018, 0, 2, 7, 0x1C0, 4),
303 MUX_GATE_CLR_SET_UPD(CLK_TOP_PWM_SEL, "pwm_sel", pwm_parents,
304 0x010, 0x014, 0x018, 8, 3, 15, 0x1C0, 5),
305 MUX_GATE_CLR_SET_UPD(CLK_TOP_I2C_SEL, "i2c_sel", i2c_parents,
306 0x010, 0x014, 0x018, 16, 2, 23, 0x1C0, 6),
307 MUX_GATE_CLR_SET_UPD(CLK_TOP_PEXTP_TL_SEL, "pextp_tl_ck_sel",
308 pextp_tl_ck_parents, 0x010, 0x014, 0x018, 24, 2, 31,
309 0x1C0, 7),
310 /* CLK_CFG_2 */
311 MUX_GATE_CLR_SET_UPD_FLAGS(CLK_TOP_EMMC_208M_SEL, "emmc_208m_sel",
312 emmc_208m_parents, 0x020, 0x024, 0x028, 0, 3, 7,
313 0x1C0, 8, 0),
314 MUX_GATE_CLR_SET_UPD_FLAGS(CLK_TOP_EMMC_400M_SEL, "emmc_400m_sel",
315 emmc_400m_parents, 0x020, 0x024, 0x028, 8, 2, 15,
316 0x1C0, 9, 0),
317 MUX_GATE_CLR_SET_UPD_FLAGS(CLK_TOP_F26M_SEL, "csw_f26m_sel",
318 csw_f26m_parents, 0x020, 0x024, 0x028, 16, 1, 23,
319 0x1C0, 10,
320 CLK_IS_CRITICAL | CLK_SET_RATE_PARENT),
321 MUX_GATE_CLR_SET_UPD_FLAGS(CLK_TOP_DRAMC_SEL, "dramc_sel",
322 csw_f26m_parents, 0x020, 0x024, 0x028, 24, 1,
323 31, 0x1C0, 11,
324 CLK_IS_CRITICAL | CLK_SET_RATE_PARENT),
325 /* CLK_CFG_3 */
326 MUX_GATE_CLR_SET_UPD_FLAGS(CLK_TOP_DRAMC_MD32_SEL, "dramc_md32_sel",
327 dramc_md32_parents, 0x030, 0x034, 0x038, 0, 2,
328 7, 0x1C0, 12,
329 CLK_IS_CRITICAL | CLK_SET_RATE_PARENT),
330 MUX_GATE_CLR_SET_UPD_FLAGS(CLK_TOP_SYSAXI_SEL, "sysaxi_sel",
331 sysaxi_parents, 0x030, 0x034, 0x038, 8, 1, 15,
332 0x1C0, 13,
333 CLK_IS_CRITICAL | CLK_SET_RATE_PARENT),
334 MUX_GATE_CLR_SET_UPD_FLAGS(CLK_TOP_SYSAPB_SEL, "sysapb_sel",
335 sysapb_parents, 0x030, 0x034, 0x038, 16, 1,
336 23, 0x1C0, 14,
337 CLK_IS_CRITICAL | CLK_SET_RATE_PARENT),
338 MUX_GATE_CLR_SET_UPD(CLK_TOP_ARM_DB_MAIN_SEL, "arm_db_main_sel",
339 arm_db_main_parents, 0x030, 0x034, 0x038, 24, 1, 31,
340 0x1C0, 15),
341 /* CLK_CFG_4 */
342 MUX_GATE_CLR_SET_UPD(CLK_TOP_AP2CNN_HOST_SEL, "ap2cnn_host_sel",
343 ap2cnn_host_parents, 0x040, 0x044, 0x048, 0, 1, 7,
344 0x1C0, 16),
345 MUX_GATE_CLR_SET_UPD(CLK_TOP_NETSYS_SEL, "netsys_sel", netsys_parents,
346 0x040, 0x044, 0x048, 8, 1, 15, 0x1C0, 17),
347 MUX_GATE_CLR_SET_UPD(CLK_TOP_NETSYS_500M_SEL, "netsys_500m_sel",
348 netsys_500m_parents, 0x040, 0x044, 0x048, 16, 1, 23,
349 0x1C0, 18),
350 MUX_GATE_CLR_SET_UPD(CLK_TOP_NETSYS_MCU_SEL, "netsys_mcu_sel",
351 netsys_mcu_parents, 0x040, 0x044, 0x048, 24, 3, 31,
352 0x1C0, 19),
353 /* CLK_CFG_5 */
354 MUX_GATE_CLR_SET_UPD(CLK_TOP_NETSYS_2X_SEL, "netsys_2x_sel",
355 netsys_2x_parents, 0x050, 0x054, 0x058, 0, 2, 7,
356 0x1C0, 20),
357 MUX_GATE_CLR_SET_UPD(CLK_TOP_SGM_325M_SEL, "sgm_325m_sel",
358 sgm_325m_parents, 0x050, 0x054, 0x058, 8, 1, 15,
359 0x1C0, 21),
360 MUX_GATE_CLR_SET_UPD_FLAGS(CLK_TOP_SGM_REG_SEL, "sgm_reg_sel", sgm_reg_parents,
361 0x050, 0x054, 0x058, 16, 1, 23, 0x1C0, 22,
362 CLK_IS_CRITICAL | CLK_SET_RATE_PARENT),
363 MUX_GATE_CLR_SET_UPD(CLK_TOP_EIP97B_SEL, "eip97b_sel", eip97b_parents,
364 0x050, 0x054, 0x058, 24, 3, 31, 0x1C0, 23),
365 /* CLK_CFG_6 */
366 MUX_GATE_CLR_SET_UPD(CLK_TOP_USB3_PHY_SEL, "usb3_phy_sel",
367 csw_f26m_parents, 0x060, 0x064, 0x068, 0, 1,
368 7, 0x1C0, 24),
369 MUX_GATE_CLR_SET_UPD(CLK_TOP_AUD_SEL, "aud_sel", aud_parents, 0x060,
370 0x064, 0x068, 8, 1, 15, 0x1C0, 25),
371 MUX_GATE_CLR_SET_UPD(CLK_TOP_A1SYS_SEL, "a1sys_sel", a1sys_parents,
372 0x060, 0x064, 0x068, 16, 1, 23, 0x1C0, 26),
373 MUX_GATE_CLR_SET_UPD(CLK_TOP_AUD_L_SEL, "aud_l_sel", aud_l_parents,
374 0x060, 0x064, 0x068, 24, 2, 31, 0x1C0, 27),
375 /* CLK_CFG_7 */
376 MUX_GATE_CLR_SET_UPD(CLK_TOP_A_TUNER_SEL, "a_tuner_sel",
377 a_tuner_parents, 0x070, 0x074, 0x078, 0, 2, 7,
378 0x1C0, 28),
379 MUX_GATE_CLR_SET_UPD(CLK_TOP_U2U3_SEL, "u2u3_sel", u2u3_parents, 0x070,
380 0x074, 0x078, 8, 1, 15, 0x1C0, 29),
381 MUX_GATE_CLR_SET_UPD(CLK_TOP_U2U3_SYS_SEL, "u2u3_sys_sel",
382 u2u3_sys_parents, 0x070, 0x074, 0x078, 16, 1, 23,
383 0x1C0, 30),
384 MUX_GATE_CLR_SET_UPD(CLK_TOP_U2U3_XHCI_SEL, "u2u3_xhci_sel",
385 u2u3_sys_parents, 0x070, 0x074, 0x078, 24, 1, 31,
386 0x1C4, 0),
387 /* CLK_CFG_8 */
388 MUX_GATE_CLR_SET_UPD(CLK_TOP_USB_FRMCNT_SEL, "usb_frmcnt_sel",
389 usb_frmcnt_parents, 0x080, 0x084, 0x088, 0, 1, 7,
390 0x1C4, 1),
391};
392
393static struct mtk_composite top_aud_divs[] = {
394 DIV_GATE(CLK_TOP_AUD_I2S_M, "aud_i2s_m", "aud",
395 0x0420, 0, 0x0420, 8, 8),
396};
397
398static const struct mtk_clk_desc topck_desc = {
399 .factor_clks = top_divs,
400 .num_factor_clks = ARRAY_SIZE(top_divs),
401 .mux_clks = top_muxes,
402 .num_mux_clks = ARRAY_SIZE(top_muxes),
403 .composite_clks = top_aud_divs,
404 .num_composite_clks = ARRAY_SIZE(top_aud_divs),
405 .clk_lock = &mt7981_clk_lock,
406};
407
408static const struct of_device_id of_match_clk_mt7981_topckgen[] = {
409 { .compatible = "mediatek,mt7981-topckgen", .data = &topck_desc },
410 { /* sentinel */ }
411};
412MODULE_DEVICE_TABLE(of, of_match_clk_mt7981_topckgen);
413
414static struct platform_driver clk_mt7981_topckgen_drv = {
415 .probe = mtk_clk_simple_probe,
416 .remove_new = mtk_clk_simple_remove,
417 .driver = {
418 .name = "clk-mt7981-topckgen",
419 .of_match_table = of_match_clk_mt7981_topckgen,
420 },
421};
422module_platform_driver(clk_mt7981_topckgen_drv);
423MODULE_LICENSE("GPL");
424

source code of linux/drivers/clk/mediatek/clk-mt7981-topckgen.c