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1/*
2 * Copyright (C) 2014 Broadcom Corporation
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation version 2.
7 *
8 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
9 * kind, whether express or implied; without even the implied warranty
10 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 */
13
14#include <linux/kernel.h>
15#include <linux/err.h>
16#include <linux/clk-provider.h>
17#include <linux/io.h>
18#include <linux/of.h>
19#include <linux/clkdev.h>
20#include <linux/of_address.h>
21#include <linux/delay.h>
22
23#include <dt-bindings/clock/bcm-cygnus.h>
24#include "clk-iproc.h"
25
26#define REG_VAL(o, s, w) { .offset = o, .shift = s, .width = w, }
27
28#define AON_VAL(o, pw, ps, is) { .offset = o, .pwr_width = pw, \
29 .pwr_shift = ps, .iso_shift = is }
30
31#define SW_CTRL_VAL(o, s) { .offset = o, .shift = s, }
32
33#define ASIU_DIV_VAL(o, es, hs, hw, ls, lw) \
34 { .offset = o, .en_shift = es, .high_shift = hs, \
35 .high_width = hw, .low_shift = ls, .low_width = lw }
36
37#define RESET_VAL(o, rs, prs) { .offset = o, .reset_shift = rs, \
38 .p_reset_shift = prs }
39
40#define DF_VAL(o, kis, kiw, kps, kpw, kas, kaw) { .offset = o, .ki_shift = kis,\
41 .ki_width = kiw, .kp_shift = kps, .kp_width = kpw, .ka_shift = kas, \
42 .ka_width = kaw }
43
44#define VCO_CTRL_VAL(uo, lo) { .u_offset = uo, .l_offset = lo }
45
46#define ENABLE_VAL(o, es, hs, bs) { .offset = o, .enable_shift = es, \
47 .hold_shift = hs, .bypass_shift = bs }
48
49#define ASIU_GATE_VAL(o, es) { .offset = o, .en_shift = es }
50
51static void __init cygnus_armpll_init(struct device_node *node)
52{
53 iproc_armpll_setup(node);
54}
55CLK_OF_DECLARE(cygnus_armpll, "brcm,cygnus-armpll", cygnus_armpll_init);
56
57static const struct iproc_pll_ctrl genpll = {
58 .flags = IPROC_CLK_AON | IPROC_CLK_PLL_HAS_NDIV_FRAC |
59 IPROC_CLK_PLL_NEEDS_SW_CFG,
60 .aon = AON_VAL(0x0, 2, 1, 0),
61 .reset = RESET_VAL(0x0, 11, 10),
62 .dig_filter = DF_VAL(0x0, 4, 3, 0, 4, 7, 3),
63 .sw_ctrl = SW_CTRL_VAL(0x10, 31),
64 .ndiv_int = REG_VAL(0x10, 20, 10),
65 .ndiv_frac = REG_VAL(0x10, 0, 20),
66 .pdiv = REG_VAL(0x14, 0, 4),
67 .vco_ctrl = VCO_CTRL_VAL(0x18, 0x1c),
68 .status = REG_VAL(0x28, 12, 1),
69};
70
71static const struct iproc_clk_ctrl genpll_clk[] = {
72 [BCM_CYGNUS_GENPLL_AXI21_CLK] = {
73 .channel = BCM_CYGNUS_GENPLL_AXI21_CLK,
74 .flags = IPROC_CLK_AON,
75 .enable = ENABLE_VAL(0x4, 6, 0, 12),
76 .mdiv = REG_VAL(0x20, 0, 8),
77 },
78 [BCM_CYGNUS_GENPLL_250MHZ_CLK] = {
79 .channel = BCM_CYGNUS_GENPLL_250MHZ_CLK,
80 .flags = IPROC_CLK_AON,
81 .enable = ENABLE_VAL(0x4, 7, 1, 13),
82 .mdiv = REG_VAL(0x20, 10, 8),
83 },
84 [BCM_CYGNUS_GENPLL_IHOST_SYS_CLK] = {
85 .channel = BCM_CYGNUS_GENPLL_IHOST_SYS_CLK,
86 .flags = IPROC_CLK_AON,
87 .enable = ENABLE_VAL(0x4, 8, 2, 14),
88 .mdiv = REG_VAL(0x20, 20, 8),
89 },
90 [BCM_CYGNUS_GENPLL_ENET_SW_CLK] = {
91 .channel = BCM_CYGNUS_GENPLL_ENET_SW_CLK,
92 .flags = IPROC_CLK_AON,
93 .enable = ENABLE_VAL(0x4, 9, 3, 15),
94 .mdiv = REG_VAL(0x24, 0, 8),
95 },
96 [BCM_CYGNUS_GENPLL_AUDIO_125_CLK] = {
97 .channel = BCM_CYGNUS_GENPLL_AUDIO_125_CLK,
98 .flags = IPROC_CLK_AON,
99 .enable = ENABLE_VAL(0x4, 10, 4, 16),
100 .mdiv = REG_VAL(0x24, 10, 8),
101 },
102 [BCM_CYGNUS_GENPLL_CAN_CLK] = {
103 .channel = BCM_CYGNUS_GENPLL_CAN_CLK,
104 .flags = IPROC_CLK_AON,
105 .enable = ENABLE_VAL(0x4, 11, 5, 17),
106 .mdiv = REG_VAL(0x24, 20, 8),
107 },
108};
109
110static void __init cygnus_genpll_clk_init(struct device_node *node)
111{
112 iproc_pll_clk_setup(node, &genpll, NULL, 0, genpll_clk,
113 ARRAY_SIZE(genpll_clk));
114}
115CLK_OF_DECLARE(cygnus_genpll, "brcm,cygnus-genpll", cygnus_genpll_clk_init);
116
117static const struct iproc_pll_ctrl lcpll0 = {
118 .flags = IPROC_CLK_AON | IPROC_CLK_PLL_NEEDS_SW_CFG,
119 .aon = AON_VAL(0x0, 2, 5, 4),
120 .reset = RESET_VAL(0x0, 31, 30),
121 .dig_filter = DF_VAL(0x0, 27, 3, 23, 4, 19, 4),
122 .sw_ctrl = SW_CTRL_VAL(0x4, 31),
123 .ndiv_int = REG_VAL(0x4, 16, 10),
124 .pdiv = REG_VAL(0x4, 26, 4),
125 .vco_ctrl = VCO_CTRL_VAL(0x10, 0x14),
126 .status = REG_VAL(0x18, 12, 1),
127};
128
129static const struct iproc_clk_ctrl lcpll0_clk[] = {
130 [BCM_CYGNUS_LCPLL0_PCIE_PHY_REF_CLK] = {
131 .channel = BCM_CYGNUS_LCPLL0_PCIE_PHY_REF_CLK,
132 .flags = IPROC_CLK_AON,
133 .enable = ENABLE_VAL(0x0, 7, 1, 13),
134 .mdiv = REG_VAL(0x8, 0, 8),
135 },
136 [BCM_CYGNUS_LCPLL0_DDR_PHY_CLK] = {
137 .channel = BCM_CYGNUS_LCPLL0_DDR_PHY_CLK,
138 .flags = IPROC_CLK_AON,
139 .enable = ENABLE_VAL(0x0, 8, 2, 14),
140 .mdiv = REG_VAL(0x8, 10, 8),
141 },
142 [BCM_CYGNUS_LCPLL0_SDIO_CLK] = {
143 .channel = BCM_CYGNUS_LCPLL0_SDIO_CLK,
144 .flags = IPROC_CLK_AON,
145 .enable = ENABLE_VAL(0x0, 9, 3, 15),
146 .mdiv = REG_VAL(0x8, 20, 8),
147 },
148 [BCM_CYGNUS_LCPLL0_USB_PHY_REF_CLK] = {
149 .channel = BCM_CYGNUS_LCPLL0_USB_PHY_REF_CLK,
150 .flags = IPROC_CLK_AON,
151 .enable = ENABLE_VAL(0x0, 10, 4, 16),
152 .mdiv = REG_VAL(0xc, 0, 8),
153 },
154 [BCM_CYGNUS_LCPLL0_SMART_CARD_CLK] = {
155 .channel = BCM_CYGNUS_LCPLL0_SMART_CARD_CLK,
156 .flags = IPROC_CLK_AON,
157 .enable = ENABLE_VAL(0x0, 11, 5, 17),
158 .mdiv = REG_VAL(0xc, 10, 8),
159 },
160 [BCM_CYGNUS_LCPLL0_CH5_UNUSED] = {
161 .channel = BCM_CYGNUS_LCPLL0_CH5_UNUSED,
162 .flags = IPROC_CLK_AON,
163 .enable = ENABLE_VAL(0x0, 12, 6, 18),
164 .mdiv = REG_VAL(0xc, 20, 8),
165 },
166};
167
168static void __init cygnus_lcpll0_clk_init(struct device_node *node)
169{
170 iproc_pll_clk_setup(node, &lcpll0, NULL, 0, lcpll0_clk,
171 ARRAY_SIZE(lcpll0_clk));
172}
173CLK_OF_DECLARE(cygnus_lcpll0, "brcm,cygnus-lcpll0", cygnus_lcpll0_clk_init);
174
175/*
176 * MIPI PLL VCO frequency parameter table
177 */
178static const struct iproc_pll_vco_param mipipll_vco_params[] = {
179 /* rate (Hz) ndiv_int ndiv_frac pdiv */
180 { 750000000UL, 30, 0, 1 },
181 { 1000000000UL, 40, 0, 1 },
182 { 1350000000ul, 54, 0, 1 },
183 { 2000000000UL, 80, 0, 1 },
184 { 2100000000UL, 84, 0, 1 },
185 { 2250000000UL, 90, 0, 1 },
186 { 2500000000UL, 100, 0, 1 },
187 { 2700000000UL, 54, 0, 0 },
188 { 2975000000UL, 119, 0, 1 },
189 { 3100000000UL, 124, 0, 1 },
190 { 3150000000UL, 126, 0, 1 },
191};
192
193static const struct iproc_pll_ctrl mipipll = {
194 .flags = IPROC_CLK_PLL_ASIU | IPROC_CLK_PLL_HAS_NDIV_FRAC |
195 IPROC_CLK_NEEDS_READ_BACK,
196 .aon = AON_VAL(0x0, 4, 17, 16),
197 .asiu = ASIU_GATE_VAL(0x0, 3),
198 .reset = RESET_VAL(0x0, 11, 10),
199 .dig_filter = DF_VAL(0x0, 4, 3, 0, 4, 7, 4),
200 .ndiv_int = REG_VAL(0x10, 20, 10),
201 .ndiv_frac = REG_VAL(0x10, 0, 20),
202 .pdiv = REG_VAL(0x14, 0, 4),
203 .vco_ctrl = VCO_CTRL_VAL(0x18, 0x1c),
204 .status = REG_VAL(0x28, 12, 1),
205};
206
207static const struct iproc_clk_ctrl mipipll_clk[] = {
208 [BCM_CYGNUS_MIPIPLL_CH0_UNUSED] = {
209 .channel = BCM_CYGNUS_MIPIPLL_CH0_UNUSED,
210 .flags = IPROC_CLK_NEEDS_READ_BACK,
211 .enable = ENABLE_VAL(0x4, 12, 6, 18),
212 .mdiv = REG_VAL(0x20, 0, 8),
213 },
214 [BCM_CYGNUS_MIPIPLL_CH1_LCD] = {
215 .channel = BCM_CYGNUS_MIPIPLL_CH1_LCD,
216 .flags = IPROC_CLK_NEEDS_READ_BACK,
217 .enable = ENABLE_VAL(0x4, 13, 7, 19),
218 .mdiv = REG_VAL(0x20, 10, 8),
219 },
220 [BCM_CYGNUS_MIPIPLL_CH2_V3D] = {
221 .channel = BCM_CYGNUS_MIPIPLL_CH2_V3D,
222 .flags = IPROC_CLK_NEEDS_READ_BACK,
223 .enable = ENABLE_VAL(0x4, 14, 8, 20),
224 .mdiv = REG_VAL(0x20, 20, 8),
225 },
226 [BCM_CYGNUS_MIPIPLL_CH3_UNUSED] = {
227 .channel = BCM_CYGNUS_MIPIPLL_CH3_UNUSED,
228 .flags = IPROC_CLK_NEEDS_READ_BACK,
229 .enable = ENABLE_VAL(0x4, 15, 9, 21),
230 .mdiv = REG_VAL(0x24, 0, 8),
231 },
232 [BCM_CYGNUS_MIPIPLL_CH4_UNUSED] = {
233 .channel = BCM_CYGNUS_MIPIPLL_CH4_UNUSED,
234 .flags = IPROC_CLK_NEEDS_READ_BACK,
235 .enable = ENABLE_VAL(0x4, 16, 10, 22),
236 .mdiv = REG_VAL(0x24, 10, 8),
237 },
238 [BCM_CYGNUS_MIPIPLL_CH5_UNUSED] = {
239 .channel = BCM_CYGNUS_MIPIPLL_CH5_UNUSED,
240 .flags = IPROC_CLK_NEEDS_READ_BACK,
241 .enable = ENABLE_VAL(0x4, 17, 11, 23),
242 .mdiv = REG_VAL(0x24, 20, 8),
243 },
244};
245
246static void __init cygnus_mipipll_clk_init(struct device_node *node)
247{
248 iproc_pll_clk_setup(node, &mipipll, mipipll_vco_params,
249 ARRAY_SIZE(mipipll_vco_params), mipipll_clk,
250 ARRAY_SIZE(mipipll_clk));
251}
252CLK_OF_DECLARE(cygnus_mipipll, "brcm,cygnus-mipipll", cygnus_mipipll_clk_init);
253
254static const struct iproc_asiu_div asiu_div[] = {
255 [BCM_CYGNUS_ASIU_KEYPAD_CLK] = ASIU_DIV_VAL(0x0, 31, 16, 10, 0, 10),
256 [BCM_CYGNUS_ASIU_ADC_CLK] = ASIU_DIV_VAL(0x4, 31, 16, 10, 0, 10),
257 [BCM_CYGNUS_ASIU_PWM_CLK] = ASIU_DIV_VAL(0x8, 31, 16, 10, 0, 10),
258};
259
260static const struct iproc_asiu_gate asiu_gate[] = {
261 [BCM_CYGNUS_ASIU_KEYPAD_CLK] = ASIU_GATE_VAL(0x0, 7),
262 [BCM_CYGNUS_ASIU_ADC_CLK] = ASIU_GATE_VAL(0x0, 9),
263 [BCM_CYGNUS_ASIU_PWM_CLK] = ASIU_GATE_VAL(IPROC_CLK_INVALID_OFFSET, 0),
264};
265
266static void __init cygnus_asiu_init(struct device_node *node)
267{
268 iproc_asiu_setup(node, asiu_div, asiu_gate, ARRAY_SIZE(asiu_div));
269}
270CLK_OF_DECLARE(cygnus_asiu_clk, "brcm,cygnus-asiu-clk", cygnus_asiu_init);
271
272static const struct iproc_pll_ctrl audiopll = {
273 .flags = IPROC_CLK_PLL_NEEDS_SW_CFG | IPROC_CLK_PLL_HAS_NDIV_FRAC |
274 IPROC_CLK_PLL_USER_MODE_ON | IPROC_CLK_PLL_RESET_ACTIVE_LOW |
275 IPROC_CLK_PLL_CALC_PARAM,
276 .reset = RESET_VAL(0x5c, 0, 1),
277 .dig_filter = DF_VAL(0x48, 0, 3, 6, 4, 3, 3),
278 .sw_ctrl = SW_CTRL_VAL(0x4, 0),
279 .ndiv_int = REG_VAL(0x8, 0, 10),
280 .ndiv_frac = REG_VAL(0x8, 10, 20),
281 .pdiv = REG_VAL(0x44, 0, 4),
282 .vco_ctrl = VCO_CTRL_VAL(0x0c, 0x10),
283 .status = REG_VAL(0x54, 0, 1),
284 .macro_mode = REG_VAL(0x0, 0, 3),
285};
286
287static const struct iproc_clk_ctrl audiopll_clk[] = {
288 [BCM_CYGNUS_AUDIOPLL_CH0] = {
289 .channel = BCM_CYGNUS_AUDIOPLL_CH0,
290 .flags = IPROC_CLK_AON | IPROC_CLK_MCLK_DIV_BY_2,
291 .enable = ENABLE_VAL(0x14, 8, 10, 9),
292 .mdiv = REG_VAL(0x14, 0, 8),
293 },
294 [BCM_CYGNUS_AUDIOPLL_CH1] = {
295 .channel = BCM_CYGNUS_AUDIOPLL_CH1,
296 .flags = IPROC_CLK_AON,
297 .enable = ENABLE_VAL(0x18, 8, 10, 9),
298 .mdiv = REG_VAL(0x18, 0, 8),
299 },
300 [BCM_CYGNUS_AUDIOPLL_CH2] = {
301 .channel = BCM_CYGNUS_AUDIOPLL_CH2,
302 .flags = IPROC_CLK_AON,
303 .enable = ENABLE_VAL(0x1c, 8, 10, 9),
304 .mdiv = REG_VAL(0x1c, 0, 8),
305 },
306};
307
308static void __init cygnus_audiopll_clk_init(struct device_node *node)
309{
310 iproc_pll_clk_setup(node, &audiopll, NULL, 0,
311 audiopll_clk, ARRAY_SIZE(audiopll_clk));
312}
313CLK_OF_DECLARE(cygnus_audiopll, "brcm,cygnus-audiopll",
314 cygnus_audiopll_clk_init);