1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Copyright (C) 2020-2021 SiFive, Inc.
10 #ifndef __SIFIVE_CLK_SIFIVE_PRCI_H
11 #define __SIFIVE_CLK_SIFIVE_PRCI_H
14 #include <linux/clk/analogbits-wrpll-cln28hpc.h>
17 * EXPECTED_CLK_PARENT_COUNT: how many parent clocks this driver expects:
20 #define EXPECTED_CLK_PARENT_COUNT 2
23 * Register offsets and bitmasks
27 #define PRCI_COREPLLCFG0_OFFSET 0x4
28 #define PRCI_COREPLLCFG0_DIVR_SHIFT 0
29 #define PRCI_COREPLLCFG0_DIVR_MASK (0x3f << PRCI_COREPLLCFG0_DIVR_SHIFT)
30 #define PRCI_COREPLLCFG0_DIVF_SHIFT 6
31 #define PRCI_COREPLLCFG0_DIVF_MASK (0x1ff << PRCI_COREPLLCFG0_DIVF_SHIFT)
32 #define PRCI_COREPLLCFG0_DIVQ_SHIFT 15
33 #define PRCI_COREPLLCFG0_DIVQ_MASK (0x7 << PRCI_COREPLLCFG0_DIVQ_SHIFT)
34 #define PRCI_COREPLLCFG0_RANGE_SHIFT 18
35 #define PRCI_COREPLLCFG0_RANGE_MASK (0x7 << PRCI_COREPLLCFG0_RANGE_SHIFT)
36 #define PRCI_COREPLLCFG0_BYPASS_SHIFT 24
37 #define PRCI_COREPLLCFG0_BYPASS_MASK (0x1 << PRCI_COREPLLCFG0_BYPASS_SHIFT)
38 #define PRCI_COREPLLCFG0_FSE_SHIFT 25
39 #define PRCI_COREPLLCFG0_FSE_MASK (0x1 << PRCI_COREPLLCFG0_FSE_SHIFT)
40 #define PRCI_COREPLLCFG0_LOCK_SHIFT 31
41 #define PRCI_COREPLLCFG0_LOCK_MASK (0x1 << PRCI_COREPLLCFG0_LOCK_SHIFT)
44 #define PRCI_COREPLLCFG1_OFFSET 0x8
45 #define PRCI_COREPLLCFG1_CKE_SHIFT 31
46 #define PRCI_COREPLLCFG1_CKE_MASK (0x1 << PRCI_COREPLLCFG1_CKE_SHIFT)
49 #define PRCI_DDRPLLCFG0_OFFSET 0xc
50 #define PRCI_DDRPLLCFG0_DIVR_SHIFT 0
51 #define PRCI_DDRPLLCFG0_DIVR_MASK (0x3f << PRCI_DDRPLLCFG0_DIVR_SHIFT)
52 #define PRCI_DDRPLLCFG0_DIVF_SHIFT 6
53 #define PRCI_DDRPLLCFG0_DIVF_MASK (0x1ff << PRCI_DDRPLLCFG0_DIVF_SHIFT)
54 #define PRCI_DDRPLLCFG0_DIVQ_SHIFT 15
55 #define PRCI_DDRPLLCFG0_DIVQ_MASK (0x7 << PRCI_DDRPLLCFG0_DIVQ_SHIFT)
56 #define PRCI_DDRPLLCFG0_RANGE_SHIFT 18
57 #define PRCI_DDRPLLCFG0_RANGE_MASK (0x7 << PRCI_DDRPLLCFG0_RANGE_SHIFT)
58 #define PRCI_DDRPLLCFG0_BYPASS_SHIFT 24
59 #define PRCI_DDRPLLCFG0_BYPASS_MASK (0x1 << PRCI_DDRPLLCFG0_BYPASS_SHIFT)
60 #define PRCI_DDRPLLCFG0_FSE_SHIFT 25
61 #define PRCI_DDRPLLCFG0_FSE_MASK (0x1 << PRCI_DDRPLLCFG0_FSE_SHIFT)
62 #define PRCI_DDRPLLCFG0_LOCK_SHIFT 31
63 #define PRCI_DDRPLLCFG0_LOCK_MASK (0x1 << PRCI_DDRPLLCFG0_LOCK_SHIFT)
66 #define PRCI_DDRPLLCFG1_OFFSET 0x10
67 #define PRCI_DDRPLLCFG1_CKE_SHIFT 31
68 #define PRCI_DDRPLLCFG1_CKE_MASK (0x1 << PRCI_DDRPLLCFG1_CKE_SHIFT)
71 #define PRCI_PCIEAUXCFG1_OFFSET 0x14
72 #define PRCI_PCIEAUXCFG1_SHIFT 0
73 #define PRCI_PCIEAUXCFG1_MASK (0x1 << PRCI_PCIEAUXCFG1_SHIFT)
76 #define PRCI_GEMGXLPLLCFG0_OFFSET 0x1c
77 #define PRCI_GEMGXLPLLCFG0_DIVR_SHIFT 0
78 #define PRCI_GEMGXLPLLCFG0_DIVR_MASK \
79 (0x3f << PRCI_GEMGXLPLLCFG0_DIVR_SHIFT)
80 #define PRCI_GEMGXLPLLCFG0_DIVF_SHIFT 6
81 #define PRCI_GEMGXLPLLCFG0_DIVF_MASK \
82 (0x1ff << PRCI_GEMGXLPLLCFG0_DIVF_SHIFT)
83 #define PRCI_GEMGXLPLLCFG0_DIVQ_SHIFT 15
84 #define PRCI_GEMGXLPLLCFG0_DIVQ_MASK (0x7 << PRCI_GEMGXLPLLCFG0_DIVQ_SHIFT)
85 #define PRCI_GEMGXLPLLCFG0_RANGE_SHIFT 18
86 #define PRCI_GEMGXLPLLCFG0_RANGE_MASK \
87 (0x7 << PRCI_GEMGXLPLLCFG0_RANGE_SHIFT)
88 #define PRCI_GEMGXLPLLCFG0_BYPASS_SHIFT 24
89 #define PRCI_GEMGXLPLLCFG0_BYPASS_MASK \
90 (0x1 << PRCI_GEMGXLPLLCFG0_BYPASS_SHIFT)
91 #define PRCI_GEMGXLPLLCFG0_FSE_SHIFT 25
92 #define PRCI_GEMGXLPLLCFG0_FSE_MASK \
93 (0x1 << PRCI_GEMGXLPLLCFG0_FSE_SHIFT)
94 #define PRCI_GEMGXLPLLCFG0_LOCK_SHIFT 31
95 #define PRCI_GEMGXLPLLCFG0_LOCK_MASK (0x1 << PRCI_GEMGXLPLLCFG0_LOCK_SHIFT)
98 #define PRCI_GEMGXLPLLCFG1_OFFSET 0x20
99 #define PRCI_GEMGXLPLLCFG1_CKE_SHIFT 31
100 #define PRCI_GEMGXLPLLCFG1_CKE_MASK (0x1 << PRCI_GEMGXLPLLCFG1_CKE_SHIFT)
103 #define PRCI_CORECLKSEL_OFFSET 0x24
104 #define PRCI_CORECLKSEL_CORECLKSEL_SHIFT 0
105 #define PRCI_CORECLKSEL_CORECLKSEL_MASK \
106 (0x1 << PRCI_CORECLKSEL_CORECLKSEL_SHIFT)
108 /* DEVICESRESETREG */
109 #define PRCI_DEVICESRESETREG_OFFSET 0x28
110 #define PRCI_DEVICERESETCNT 6
112 /* CLKMUXSTATUSREG */
113 #define PRCI_CLKMUXSTATUSREG_OFFSET 0x2c
114 #define PRCI_CLKMUXSTATUSREG_TLCLKSEL_STATUS_SHIFT 1
115 #define PRCI_CLKMUXSTATUSREG_TLCLKSEL_STATUS_MASK \
116 (0x1 << PRCI_CLKMUXSTATUSREG_TLCLKSEL_STATUS_SHIFT)
119 #define PRCI_CLTXPLLCFG0_OFFSET 0x30
120 #define PRCI_CLTXPLLCFG0_DIVR_SHIFT 0
121 #define PRCI_CLTXPLLCFG0_DIVR_MASK (0x3f << PRCI_CLTXPLLCFG0_DIVR_SHIFT)
122 #define PRCI_CLTXPLLCFG0_DIVF_SHIFT 6
123 #define PRCI_CLTXPLLCFG0_DIVF_MASK (0x1ff << PRCI_CLTXPLLCFG0_DIVF_SHIFT)
124 #define PRCI_CLTXPLLCFG0_DIVQ_SHIFT 15
125 #define PRCI_CLTXPLLCFG0_DIVQ_MASK (0x7 << PRCI_CLTXPLLCFG0_DIVQ_SHIFT)
126 #define PRCI_CLTXPLLCFG0_RANGE_SHIFT 18
127 #define PRCI_CLTXPLLCFG0_RANGE_MASK (0x7 << PRCI_CLTXPLLCFG0_RANGE_SHIFT)
128 #define PRCI_CLTXPLLCFG0_BYPASS_SHIFT 24
129 #define PRCI_CLTXPLLCFG0_BYPASS_MASK (0x1 << PRCI_CLTXPLLCFG0_BYPASS_SHIFT)
130 #define PRCI_CLTXPLLCFG0_FSE_SHIFT 25
131 #define PRCI_CLTXPLLCFG0_FSE_MASK (0x1 << PRCI_CLTXPLLCFG0_FSE_SHIFT)
132 #define PRCI_CLTXPLLCFG0_LOCK_SHIFT 31
133 #define PRCI_CLTXPLLCFG0_LOCK_MASK (0x1 << PRCI_CLTXPLLCFG0_LOCK_SHIFT)
136 #define PRCI_CLTXPLLCFG1_OFFSET 0x34
137 #define PRCI_CLTXPLLCFG1_CKE_SHIFT 24
138 #define PRCI_CLTXPLLCFG1_CKE_MASK (0x1 << PRCI_CLTXPLLCFG1_CKE_SHIFT)
140 /* DVFSCOREPLLCFG0 */
141 #define PRCI_DVFSCOREPLLCFG0_OFFSET 0x38
143 /* DVFSCOREPLLCFG1 */
144 #define PRCI_DVFSCOREPLLCFG1_OFFSET 0x3c
145 #define PRCI_DVFSCOREPLLCFG1_CKE_SHIFT 24
146 #define PRCI_DVFSCOREPLLCFG1_CKE_MASK (0x1 << PRCI_DVFSCOREPLLCFG1_CKE_SHIFT)
149 #define PRCI_COREPLLSEL_OFFSET 0x40
150 #define PRCI_COREPLLSEL_COREPLLSEL_SHIFT 0
151 #define PRCI_COREPLLSEL_COREPLLSEL_MASK \
152 (0x1 << PRCI_COREPLLSEL_COREPLLSEL_SHIFT)
155 #define PRCI_HFPCLKPLLCFG0_OFFSET 0x50
156 #define PRCI_HFPCLKPLL_CFG0_DIVR_SHIFT 0
157 #define PRCI_HFPCLKPLL_CFG0_DIVR_MASK \
158 (0x3f << PRCI_HFPCLKPLLCFG0_DIVR_SHIFT)
159 #define PRCI_HFPCLKPLL_CFG0_DIVF_SHIFT 6
160 #define PRCI_HFPCLKPLL_CFG0_DIVF_MASK \
161 (0x1ff << PRCI_HFPCLKPLLCFG0_DIVF_SHIFT)
162 #define PRCI_HFPCLKPLL_CFG0_DIVQ_SHIFT 15
163 #define PRCI_HFPCLKPLL_CFG0_DIVQ_MASK \
164 (0x7 << PRCI_HFPCLKPLLCFG0_DIVQ_SHIFT)
165 #define PRCI_HFPCLKPLL_CFG0_RANGE_SHIFT 18
166 #define PRCI_HFPCLKPLL_CFG0_RANGE_MASK \
167 (0x7 << PRCI_HFPCLKPLLCFG0_RANGE_SHIFT)
168 #define PRCI_HFPCLKPLL_CFG0_BYPASS_SHIFT 24
169 #define PRCI_HFPCLKPLL_CFG0_BYPASS_MASK \
170 (0x1 << PRCI_HFPCLKPLLCFG0_BYPASS_SHIFT)
171 #define PRCI_HFPCLKPLL_CFG0_FSE_SHIFT 25
172 #define PRCI_HFPCLKPLL_CFG0_FSE_MASK \
173 (0x1 << PRCI_HFPCLKPLLCFG0_FSE_SHIFT)
174 #define PRCI_HFPCLKPLL_CFG0_LOCK_SHIFT 31
175 #define PRCI_HFPCLKPLL_CFG0_LOCK_MASK \
176 (0x1 << PRCI_HFPCLKPLLCFG0_LOCK_SHIFT)
179 #define PRCI_HFPCLKPLLCFG1_OFFSET 0x54
180 #define PRCI_HFPCLKPLLCFG1_CKE_SHIFT 24
181 #define PRCI_HFPCLKPLLCFG1_CKE_MASK \
182 (0x1 << PRCI_HFPCLKPLLCFG1_CKE_SHIFT)
185 #define PRCI_HFPCLKPLLSEL_OFFSET 0x58
186 #define PRCI_HFPCLKPLLSEL_HFPCLKPLLSEL_SHIFT 0
187 #define PRCI_HFPCLKPLLSEL_HFPCLKPLLSEL_MASK \
188 (0x1 << PRCI_HFPCLKPLLSEL_HFPCLKPLLSEL_SHIFT)
191 #define PRCI_HFPCLKPLLDIV_OFFSET 0x5c
194 #define PRCI_PRCIPLL_OFFSET 0xe0
196 #define PRCI_PRCIPLL_CLTXPLL (0x1 << 0)
197 #define PRCI_PRCIPLL_GEMGXLPLL (0x1 << 1)
198 #define PRCI_PRCIPLL_DDRPLL (0x1 << 2)
199 #define PRCI_PRCIPLL_HFPCLKPLL (0x1 << 3)
200 #define PRCI_PRCIPLL_DVFSCOREPLL (0x1 << 4)
201 #define PRCI_PRCIPLL_COREPLL (0x1 << 5)
204 #define PRCI_PROCMONCFG_OFFSET 0xF0
205 #define PRCI_PROCMONCFG_CORE_CLOCK_SHIFT 24
206 #define PRCI_PROCMONCFG_CORE_CLOCK_MASK \
207 (0x1 << PRCI_PROCMONCFG_CORE_CLOCK_SHIFT)
214 * struct __prci_data - per-device-instance data
215 * @va: base virtual address of the PRCI IP block
216 * @parent: parent clk instance
218 * PRCI per-device instance data
222 struct clk parent_hfclk;
223 struct clk parent_rtcclk;
227 * struct __prci_wrpll_data - WRPLL configuration and integration data
228 * @c: WRPLL current configuration record
229 * @enable_bypass: fn ptr to code to bypass the WRPLL (if applicable; else NULL)
230 * @disable_bypass: fn ptr to code to not bypass the WRPLL (or NULL)
231 * @cfg0_offs: WRPLL CFG0 register offset (in bytes) from the PRCI base address
232 * @cfg1_offs: WRPLL CFG1 register offset (in bytes) from the PRCI base address
233 * @release_reset: fn ptr to code to release clock reset
235 * @enable_bypass and @disable_bypass are used for WRPLL instances
236 * that contain a separate external glitchless clock mux downstream
237 * from the PLL. The WRPLL internal bypass mux is not glitchless.
239 struct __prci_wrpll_data {
241 void (*enable_bypass)(struct __prci_data *pd);
242 void (*disable_bypass)(struct __prci_data *pd);
245 void (*release_reset)(struct __prci_data *pd);
249 * struct __prci_clock - describes a clock device managed by PRCI
250 * @name: user-readable clock name string - should match the manual
251 * @parent_name: parent name for this clock
252 * @ops: struct __prci_clock_ops for control
253 * @pwd: WRPLL-specific data, associated with this clock (if not NULL)
254 * @pd: PRCI-specific data associated with this clock (if not NULL)
256 * PRCI clock data. Used by the PRCI driver to register PRCI-provided
257 * clocks to the Linux clock infrastructure.
259 struct __prci_clock {
261 const char *parent_name;
262 const struct __prci_clock_ops *ops;
263 struct __prci_wrpll_data *pwd;
264 struct __prci_data *pd;
267 /* struct __prci_clock_ops - clock operations */
268 struct __prci_clock_ops {
269 int (*set_rate)(struct __prci_clock *pc,
271 unsigned long parent_rate);
272 unsigned long (*round_rate)(struct __prci_clock *pc,
274 unsigned long *parent_rate);
275 unsigned long (*recalc_rate)(struct __prci_clock *pc,
276 unsigned long parent_rate);
277 int (*enable_clk)(struct __prci_clock *pc, bool enable);
281 * struct prci_clk_desc - describes the information of clocks of each SoCs
282 * @clks: point to a array of __prci_clock
283 * @num_clks: the number of element of clks
285 struct prci_clk_desc {
286 struct __prci_clock *clks;
290 void sifive_prci_ethernet_release_reset(struct __prci_data *pd);
291 void sifive_prci_ddr_release_reset(struct __prci_data *pd);
292 void sifive_prci_cltx_release_reset(struct __prci_data *pd);
294 /* Core clock mux control */
295 void sifive_prci_coreclksel_use_hfclk(struct __prci_data *pd);
296 void sifive_prci_coreclksel_use_corepll(struct __prci_data *pd);
297 void sifive_prci_coreclksel_use_final_corepll(struct __prci_data *pd);
298 void sifive_prci_corepllsel_use_dvfscorepll(struct __prci_data *pd);
299 void sifive_prci_corepllsel_use_corepll(struct __prci_data *pd);
300 void sifive_prci_hfpclkpllsel_use_hfclk(struct __prci_data *pd);
301 void sifive_prci_hfpclkpllsel_use_hfpclkpll(struct __prci_data *pd);
303 unsigned long sifive_prci_wrpll_round_rate(struct __prci_clock *pc,
305 unsigned long *parent_rate);
307 /* Linux clock framework integration */
308 int sifive_prci_wrpll_set_rate(struct __prci_clock *pc,
310 unsigned long parent_rate);
312 unsigned long sifive_prci_wrpll_recalc_rate(struct __prci_clock *pc,
313 unsigned long parent_rate);
315 unsigned long sifive_prci_tlclksel_recalc_rate(struct __prci_clock *pc,
316 unsigned long parent_rate);
318 unsigned long sifive_prci_hfpclkplldiv_recalc_rate(struct __prci_clock *pc,
319 unsigned long parent_rate);
321 int sifive_prci_clock_enable(struct __prci_clock *pc, bool enable);
323 #endif /* __SIFIVE_CLK_SIFIVE_PRCI_H */