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594bde68 JC |
1 | /* |
2 | * This program is free software; you can redistribute it and/or modify it | |
3 | * under the terms of the GNU General Public License version 2 as published | |
4 | * by the Free Software Foundation. | |
5 | * | |
6 | * Parts of this file are based on Ralink's 2.6.21 BSP | |
7 | * | |
8 | * Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org> | |
9 | * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org> | |
97b92108 | 10 | * Copyright (C) 2013 John Crispin <john@phrozen.org> |
594bde68 JC |
11 | */ |
12 | ||
13 | #include <linux/kernel.h> | |
14 | #include <linux/init.h> | |
15 | #include <linux/module.h> | |
16 | ||
17 | #include <asm/mipsregs.h> | |
18 | #include <asm/mach-ralink/ralink_regs.h> | |
19 | #include <asm/mach-ralink/mt7620.h> | |
f576fb6a | 20 | #include <asm/mach-ralink/pinmux.h> |
594bde68 JC |
21 | |
22 | #include "common.h" | |
23 | ||
2adf550f JC |
24 | /* analog */ |
25 | #define PMU0_CFG 0x88 | |
26 | #define PMU_SW_SET BIT(28) | |
27 | #define A_DCDC_EN BIT(24) | |
28 | #define A_SSC_PERI BIT(19) | |
29 | #define A_SSC_GEN BIT(18) | |
30 | #define A_SSC_M 0x3 | |
31 | #define A_SSC_S 16 | |
32 | #define A_DLY_M 0x7 | |
33 | #define A_DLY_S 8 | |
34 | #define A_VTUNE_M 0xff | |
35 | ||
36 | /* digital */ | |
37 | #define PMU1_CFG 0x8C | |
38 | #define DIG_SW_SEL BIT(25) | |
39 | ||
b361bd76 JC |
40 | /* clock scaling */ |
41 | #define CLKCFG_FDIV_MASK 0x1f00 | |
42 | #define CLKCFG_FDIV_USB_VAL 0x0300 | |
43 | #define CLKCFG_FFRAC_MASK 0x001f | |
44 | #define CLKCFG_FFRAC_USB_VAL 0x0003 | |
45 | ||
81857db9 JC |
46 | /* EFUSE bits */ |
47 | #define EFUSE_MT7688 0x100000 | |
48 | ||
49 | /* DRAM type bit */ | |
50 | #define DRAM_TYPE_MT7628_MASK 0x1 | |
51 | ||
594bde68 JC |
52 | /* does the board have sdram or ddram */ |
53 | static int dram_type; | |
54 | ||
f576fb6a JC |
55 | static struct rt2880_pmx_func i2c_grp[] = { FUNC("i2c", 0, 1, 2) }; |
56 | static struct rt2880_pmx_func spi_grp[] = { FUNC("spi", 0, 3, 4) }; | |
57 | static struct rt2880_pmx_func uartlite_grp[] = { FUNC("uartlite", 0, 15, 2) }; | |
58 | static struct rt2880_pmx_func mdio_grp[] = { FUNC("mdio", 0, 22, 2) }; | |
59 | static struct rt2880_pmx_func rgmii1_grp[] = { FUNC("rgmii1", 0, 24, 12) }; | |
60 | static struct rt2880_pmx_func refclk_grp[] = { FUNC("spi refclk", 0, 37, 3) }; | |
61 | static struct rt2880_pmx_func ephy_grp[] = { FUNC("ephy", 0, 40, 5) }; | |
62 | static struct rt2880_pmx_func rgmii2_grp[] = { FUNC("rgmii2", 0, 60, 12) }; | |
63 | static struct rt2880_pmx_func wled_grp[] = { FUNC("wled", 0, 72, 1) }; | |
64 | static struct rt2880_pmx_func pa_grp[] = { FUNC("pa", 0, 18, 4) }; | |
65 | static struct rt2880_pmx_func uartf_grp[] = { | |
66 | FUNC("uartf", MT7620_GPIO_MODE_UARTF, 7, 8), | |
67 | FUNC("pcm uartf", MT7620_GPIO_MODE_PCM_UARTF, 7, 8), | |
68 | FUNC("pcm i2s", MT7620_GPIO_MODE_PCM_I2S, 7, 8), | |
69 | FUNC("i2s uartf", MT7620_GPIO_MODE_I2S_UARTF, 7, 8), | |
70 | FUNC("pcm gpio", MT7620_GPIO_MODE_PCM_GPIO, 11, 4), | |
71 | FUNC("gpio uartf", MT7620_GPIO_MODE_GPIO_UARTF, 7, 4), | |
72 | FUNC("gpio i2s", MT7620_GPIO_MODE_GPIO_I2S, 7, 4), | |
594bde68 | 73 | }; |
f576fb6a JC |
74 | static struct rt2880_pmx_func wdt_grp[] = { |
75 | FUNC("wdt rst", 0, 17, 1), | |
76 | FUNC("wdt refclk", 0, 17, 1), | |
77 | }; | |
78 | static struct rt2880_pmx_func pcie_rst_grp[] = { | |
79 | FUNC("pcie rst", MT7620_GPIO_MODE_PCIE_RST, 36, 1), | |
80 | FUNC("pcie refclk", MT7620_GPIO_MODE_PCIE_REF, 36, 1) | |
81 | }; | |
82 | static struct rt2880_pmx_func nd_sd_grp[] = { | |
83 | FUNC("nand", MT7620_GPIO_MODE_NAND, 45, 15), | |
84 | FUNC("sd", MT7620_GPIO_MODE_SD, 45, 15) | |
594bde68 JC |
85 | }; |
86 | ||
f576fb6a JC |
87 | static struct rt2880_pmx_group mt7620a_pinmux_data[] = { |
88 | GRP("i2c", i2c_grp, 1, MT7620_GPIO_MODE_I2C), | |
89 | GRP("uartf", uartf_grp, MT7620_GPIO_MODE_UART0_MASK, | |
90 | MT7620_GPIO_MODE_UART0_SHIFT), | |
91 | GRP("spi", spi_grp, 1, MT7620_GPIO_MODE_SPI), | |
92 | GRP("uartlite", uartlite_grp, 1, MT7620_GPIO_MODE_UART1), | |
93 | GRP_G("wdt", wdt_grp, MT7620_GPIO_MODE_WDT_MASK, | |
94 | MT7620_GPIO_MODE_WDT_GPIO, MT7620_GPIO_MODE_WDT_SHIFT), | |
95 | GRP("mdio", mdio_grp, 1, MT7620_GPIO_MODE_MDIO), | |
96 | GRP("rgmii1", rgmii1_grp, 1, MT7620_GPIO_MODE_RGMII1), | |
97 | GRP("spi refclk", refclk_grp, 1, MT7620_GPIO_MODE_SPI_REF_CLK), | |
98 | GRP_G("pcie", pcie_rst_grp, MT7620_GPIO_MODE_PCIE_MASK, | |
99 | MT7620_GPIO_MODE_PCIE_GPIO, MT7620_GPIO_MODE_PCIE_SHIFT), | |
100 | GRP_G("nd_sd", nd_sd_grp, MT7620_GPIO_MODE_ND_SD_MASK, | |
101 | MT7620_GPIO_MODE_ND_SD_GPIO, MT7620_GPIO_MODE_ND_SD_SHIFT), | |
102 | GRP("rgmii2", rgmii2_grp, 1, MT7620_GPIO_MODE_RGMII2), | |
103 | GRP("wled", wled_grp, 1, MT7620_GPIO_MODE_WLED), | |
104 | GRP("ephy", ephy_grp, 1, MT7620_GPIO_MODE_EPHY), | |
105 | GRP("pa", pa_grp, 1, MT7620_GPIO_MODE_PA), | |
106 | { 0 } | |
594bde68 JC |
107 | }; |
108 | ||
53263a1c | 109 | static struct rt2880_pmx_func pwm1_grp_mt7628[] = { |
e906a5f6 | 110 | FUNC("sdxc d6", 3, 19, 1), |
53263a1c JC |
111 | FUNC("utif", 2, 19, 1), |
112 | FUNC("gpio", 1, 19, 1), | |
e906a5f6 | 113 | FUNC("pwm1", 0, 19, 1), |
53263a1c JC |
114 | }; |
115 | ||
116 | static struct rt2880_pmx_func pwm0_grp_mt7628[] = { | |
e906a5f6 | 117 | FUNC("sdxc d7", 3, 18, 1), |
53263a1c JC |
118 | FUNC("utif", 2, 18, 1), |
119 | FUNC("gpio", 1, 18, 1), | |
e906a5f6 | 120 | FUNC("pwm0", 0, 18, 1), |
53263a1c JC |
121 | }; |
122 | ||
123 | static struct rt2880_pmx_func uart2_grp_mt7628[] = { | |
e906a5f6 | 124 | FUNC("sdxc d5 d4", 3, 20, 2), |
53263a1c JC |
125 | FUNC("pwm", 2, 20, 2), |
126 | FUNC("gpio", 1, 20, 2), | |
e906a5f6 | 127 | FUNC("uart2", 0, 20, 2), |
53263a1c JC |
128 | }; |
129 | ||
130 | static struct rt2880_pmx_func uart1_grp_mt7628[] = { | |
e906a5f6 | 131 | FUNC("sw_r", 3, 45, 2), |
53263a1c JC |
132 | FUNC("pwm", 2, 45, 2), |
133 | FUNC("gpio", 1, 45, 2), | |
e906a5f6 | 134 | FUNC("uart1", 0, 45, 2), |
53263a1c JC |
135 | }; |
136 | ||
137 | static struct rt2880_pmx_func i2c_grp_mt7628[] = { | |
138 | FUNC("-", 3, 4, 2), | |
139 | FUNC("debug", 2, 4, 2), | |
140 | FUNC("gpio", 1, 4, 2), | |
141 | FUNC("i2c", 0, 4, 2), | |
142 | }; | |
143 | ||
144 | static struct rt2880_pmx_func refclk_grp_mt7628[] = { FUNC("reclk", 0, 36, 1) }; | |
145 | static struct rt2880_pmx_func perst_grp_mt7628[] = { FUNC("perst", 0, 37, 1) }; | |
e906a5f6 | 146 | static struct rt2880_pmx_func wdt_grp_mt7628[] = { FUNC("wdt", 0, 38, 1) }; |
53263a1c JC |
147 | static struct rt2880_pmx_func spi_grp_mt7628[] = { FUNC("spi", 0, 7, 4) }; |
148 | ||
149 | static struct rt2880_pmx_func sd_mode_grp_mt7628[] = { | |
150 | FUNC("jtag", 3, 22, 8), | |
151 | FUNC("utif", 2, 22, 8), | |
152 | FUNC("gpio", 1, 22, 8), | |
e906a5f6 | 153 | FUNC("sdxc", 0, 22, 8), |
53263a1c JC |
154 | }; |
155 | ||
156 | static struct rt2880_pmx_func uart0_grp_mt7628[] = { | |
157 | FUNC("-", 3, 12, 2), | |
158 | FUNC("-", 2, 12, 2), | |
159 | FUNC("gpio", 1, 12, 2), | |
e906a5f6 | 160 | FUNC("uart0", 0, 12, 2), |
53263a1c JC |
161 | }; |
162 | ||
163 | static struct rt2880_pmx_func i2s_grp_mt7628[] = { | |
164 | FUNC("antenna", 3, 0, 4), | |
165 | FUNC("pcm", 2, 0, 4), | |
166 | FUNC("gpio", 1, 0, 4), | |
167 | FUNC("i2s", 0, 0, 4), | |
168 | }; | |
169 | ||
170 | static struct rt2880_pmx_func spi_cs1_grp_mt7628[] = { | |
171 | FUNC("-", 3, 6, 1), | |
172 | FUNC("refclk", 2, 6, 1), | |
173 | FUNC("gpio", 1, 6, 1), | |
e906a5f6 | 174 | FUNC("spi cs1", 0, 6, 1), |
53263a1c JC |
175 | }; |
176 | ||
177 | static struct rt2880_pmx_func spis_grp_mt7628[] = { | |
79977894 | 178 | FUNC("pwm_uart2", 3, 14, 4), |
53263a1c JC |
179 | FUNC("util", 2, 14, 4), |
180 | FUNC("gpio", 1, 14, 4), | |
181 | FUNC("spis", 0, 14, 4), | |
182 | }; | |
183 | ||
184 | static struct rt2880_pmx_func gpio_grp_mt7628[] = { | |
185 | FUNC("pcie", 3, 11, 1), | |
186 | FUNC("refclk", 2, 11, 1), | |
187 | FUNC("gpio", 1, 11, 1), | |
188 | FUNC("gpio", 0, 11, 1), | |
189 | }; | |
190 | ||
2b436a35 ÁFR |
191 | static struct rt2880_pmx_func p4led_kn_grp_mt7628[] = { |
192 | FUNC("jtag", 3, 30, 1), | |
193 | FUNC("util", 2, 30, 1), | |
194 | FUNC("gpio", 1, 30, 1), | |
195 | FUNC("p4led_kn", 0, 30, 1), | |
196 | }; | |
197 | ||
198 | static struct rt2880_pmx_func p3led_kn_grp_mt7628[] = { | |
199 | FUNC("jtag", 3, 31, 1), | |
200 | FUNC("util", 2, 31, 1), | |
201 | FUNC("gpio", 1, 31, 1), | |
202 | FUNC("p3led_kn", 0, 31, 1), | |
203 | }; | |
204 | ||
205 | static struct rt2880_pmx_func p2led_kn_grp_mt7628[] = { | |
206 | FUNC("jtag", 3, 32, 1), | |
207 | FUNC("util", 2, 32, 1), | |
208 | FUNC("gpio", 1, 32, 1), | |
209 | FUNC("p2led_kn", 0, 32, 1), | |
210 | }; | |
211 | ||
212 | static struct rt2880_pmx_func p1led_kn_grp_mt7628[] = { | |
213 | FUNC("jtag", 3, 33, 1), | |
214 | FUNC("util", 2, 33, 1), | |
215 | FUNC("gpio", 1, 33, 1), | |
216 | FUNC("p1led_kn", 0, 33, 1), | |
217 | }; | |
218 | ||
219 | static struct rt2880_pmx_func p0led_kn_grp_mt7628[] = { | |
220 | FUNC("jtag", 3, 34, 1), | |
221 | FUNC("rsvd", 2, 34, 1), | |
222 | FUNC("gpio", 1, 34, 1), | |
223 | FUNC("p0led_kn", 0, 34, 1), | |
224 | }; | |
225 | ||
e906a5f6 JC |
226 | static struct rt2880_pmx_func wled_kn_grp_mt7628[] = { |
227 | FUNC("rsvd", 3, 35, 1), | |
228 | FUNC("rsvd", 2, 35, 1), | |
229 | FUNC("gpio", 1, 35, 1), | |
230 | FUNC("wled_kn", 0, 35, 1), | |
231 | }; | |
232 | ||
2b436a35 ÁFR |
233 | static struct rt2880_pmx_func p4led_an_grp_mt7628[] = { |
234 | FUNC("jtag", 3, 39, 1), | |
235 | FUNC("util", 2, 39, 1), | |
236 | FUNC("gpio", 1, 39, 1), | |
237 | FUNC("p4led_an", 0, 39, 1), | |
238 | }; | |
239 | ||
240 | static struct rt2880_pmx_func p3led_an_grp_mt7628[] = { | |
241 | FUNC("jtag", 3, 40, 1), | |
242 | FUNC("util", 2, 40, 1), | |
243 | FUNC("gpio", 1, 40, 1), | |
244 | FUNC("p3led_an", 0, 40, 1), | |
245 | }; | |
246 | ||
247 | static struct rt2880_pmx_func p2led_an_grp_mt7628[] = { | |
248 | FUNC("jtag", 3, 41, 1), | |
249 | FUNC("util", 2, 41, 1), | |
250 | FUNC("gpio", 1, 41, 1), | |
251 | FUNC("p2led_an", 0, 41, 1), | |
252 | }; | |
253 | ||
254 | static struct rt2880_pmx_func p1led_an_grp_mt7628[] = { | |
255 | FUNC("jtag", 3, 42, 1), | |
256 | FUNC("util", 2, 42, 1), | |
257 | FUNC("gpio", 1, 42, 1), | |
258 | FUNC("p1led_an", 0, 42, 1), | |
259 | }; | |
260 | ||
261 | static struct rt2880_pmx_func p0led_an_grp_mt7628[] = { | |
262 | FUNC("jtag", 3, 43, 1), | |
263 | FUNC("rsvd", 2, 43, 1), | |
264 | FUNC("gpio", 1, 43, 1), | |
265 | FUNC("p0led_an", 0, 43, 1), | |
266 | }; | |
267 | ||
e906a5f6 | 268 | static struct rt2880_pmx_func wled_an_grp_mt7628[] = { |
07b50db6 ÁFR |
269 | FUNC("rsvd", 3, 44, 1), |
270 | FUNC("rsvd", 2, 44, 1), | |
271 | FUNC("gpio", 1, 44, 1), | |
272 | FUNC("wled_an", 0, 44, 1), | |
e906a5f6 JC |
273 | }; |
274 | ||
275 | #define MT7628_GPIO_MODE_MASK 0x3 | |
276 | ||
2b436a35 ÁFR |
277 | #define MT7628_GPIO_MODE_P4LED_KN 58 |
278 | #define MT7628_GPIO_MODE_P3LED_KN 56 | |
279 | #define MT7628_GPIO_MODE_P2LED_KN 54 | |
280 | #define MT7628_GPIO_MODE_P1LED_KN 52 | |
281 | #define MT7628_GPIO_MODE_P0LED_KN 50 | |
e906a5f6 | 282 | #define MT7628_GPIO_MODE_WLED_KN 48 |
2b436a35 ÁFR |
283 | #define MT7628_GPIO_MODE_P4LED_AN 42 |
284 | #define MT7628_GPIO_MODE_P3LED_AN 40 | |
285 | #define MT7628_GPIO_MODE_P2LED_AN 38 | |
286 | #define MT7628_GPIO_MODE_P1LED_AN 36 | |
287 | #define MT7628_GPIO_MODE_P0LED_AN 34 | |
e906a5f6 JC |
288 | #define MT7628_GPIO_MODE_WLED_AN 32 |
289 | #define MT7628_GPIO_MODE_PWM1 30 | |
290 | #define MT7628_GPIO_MODE_PWM0 28 | |
291 | #define MT7628_GPIO_MODE_UART2 26 | |
292 | #define MT7628_GPIO_MODE_UART1 24 | |
293 | #define MT7628_GPIO_MODE_I2C 20 | |
294 | #define MT7628_GPIO_MODE_REFCLK 18 | |
295 | #define MT7628_GPIO_MODE_PERST 16 | |
296 | #define MT7628_GPIO_MODE_WDT 14 | |
297 | #define MT7628_GPIO_MODE_SPI 12 | |
298 | #define MT7628_GPIO_MODE_SDMODE 10 | |
299 | #define MT7628_GPIO_MODE_UART0 8 | |
300 | #define MT7628_GPIO_MODE_I2S 6 | |
301 | #define MT7628_GPIO_MODE_CS1 4 | |
302 | #define MT7628_GPIO_MODE_SPIS 2 | |
303 | #define MT7628_GPIO_MODE_GPIO 0 | |
53263a1c JC |
304 | |
305 | static struct rt2880_pmx_group mt7628an_pinmux_data[] = { | |
d7146829 | 306 | GRP_G("pwm1", pwm1_grp_mt7628, MT7628_GPIO_MODE_MASK, |
53263a1c | 307 | 1, MT7628_GPIO_MODE_PWM1), |
d7146829 | 308 | GRP_G("pwm0", pwm0_grp_mt7628, MT7628_GPIO_MODE_MASK, |
53263a1c JC |
309 | 1, MT7628_GPIO_MODE_PWM0), |
310 | GRP_G("uart2", uart2_grp_mt7628, MT7628_GPIO_MODE_MASK, | |
311 | 1, MT7628_GPIO_MODE_UART2), | |
312 | GRP_G("uart1", uart1_grp_mt7628, MT7628_GPIO_MODE_MASK, | |
313 | 1, MT7628_GPIO_MODE_UART1), | |
314 | GRP_G("i2c", i2c_grp_mt7628, MT7628_GPIO_MODE_MASK, | |
315 | 1, MT7628_GPIO_MODE_I2C), | |
316 | GRP("refclk", refclk_grp_mt7628, 1, MT7628_GPIO_MODE_REFCLK), | |
317 | GRP("perst", perst_grp_mt7628, 1, MT7628_GPIO_MODE_PERST), | |
318 | GRP("wdt", wdt_grp_mt7628, 1, MT7628_GPIO_MODE_WDT), | |
319 | GRP("spi", spi_grp_mt7628, 1, MT7628_GPIO_MODE_SPI), | |
320 | GRP_G("sdmode", sd_mode_grp_mt7628, MT7628_GPIO_MODE_MASK, | |
321 | 1, MT7628_GPIO_MODE_SDMODE), | |
322 | GRP_G("uart0", uart0_grp_mt7628, MT7628_GPIO_MODE_MASK, | |
323 | 1, MT7628_GPIO_MODE_UART0), | |
324 | GRP_G("i2s", i2s_grp_mt7628, MT7628_GPIO_MODE_MASK, | |
325 | 1, MT7628_GPIO_MODE_I2S), | |
326 | GRP_G("spi cs1", spi_cs1_grp_mt7628, MT7628_GPIO_MODE_MASK, | |
327 | 1, MT7628_GPIO_MODE_CS1), | |
328 | GRP_G("spis", spis_grp_mt7628, MT7628_GPIO_MODE_MASK, | |
329 | 1, MT7628_GPIO_MODE_SPIS), | |
330 | GRP_G("gpio", gpio_grp_mt7628, MT7628_GPIO_MODE_MASK, | |
331 | 1, MT7628_GPIO_MODE_GPIO), | |
e906a5f6 JC |
332 | GRP_G("wled_an", wled_an_grp_mt7628, MT7628_GPIO_MODE_MASK, |
333 | 1, MT7628_GPIO_MODE_WLED_AN), | |
2b436a35 ÁFR |
334 | GRP_G("p0led_an", p0led_an_grp_mt7628, MT7628_GPIO_MODE_MASK, |
335 | 1, MT7628_GPIO_MODE_P0LED_AN), | |
336 | GRP_G("p1led_an", p1led_an_grp_mt7628, MT7628_GPIO_MODE_MASK, | |
337 | 1, MT7628_GPIO_MODE_P1LED_AN), | |
338 | GRP_G("p2led_an", p2led_an_grp_mt7628, MT7628_GPIO_MODE_MASK, | |
339 | 1, MT7628_GPIO_MODE_P2LED_AN), | |
340 | GRP_G("p3led_an", p3led_an_grp_mt7628, MT7628_GPIO_MODE_MASK, | |
341 | 1, MT7628_GPIO_MODE_P3LED_AN), | |
342 | GRP_G("p4led_an", p4led_an_grp_mt7628, MT7628_GPIO_MODE_MASK, | |
343 | 1, MT7628_GPIO_MODE_P4LED_AN), | |
e906a5f6 JC |
344 | GRP_G("wled_kn", wled_kn_grp_mt7628, MT7628_GPIO_MODE_MASK, |
345 | 1, MT7628_GPIO_MODE_WLED_KN), | |
2b436a35 ÁFR |
346 | GRP_G("p0led_kn", p0led_kn_grp_mt7628, MT7628_GPIO_MODE_MASK, |
347 | 1, MT7628_GPIO_MODE_P0LED_KN), | |
348 | GRP_G("p1led_kn", p1led_kn_grp_mt7628, MT7628_GPIO_MODE_MASK, | |
349 | 1, MT7628_GPIO_MODE_P1LED_KN), | |
350 | GRP_G("p2led_kn", p2led_kn_grp_mt7628, MT7628_GPIO_MODE_MASK, | |
351 | 1, MT7628_GPIO_MODE_P2LED_KN), | |
352 | GRP_G("p3led_kn", p3led_kn_grp_mt7628, MT7628_GPIO_MODE_MASK, | |
353 | 1, MT7628_GPIO_MODE_P3LED_KN), | |
354 | GRP_G("p4led_kn", p4led_kn_grp_mt7628, MT7628_GPIO_MODE_MASK, | |
355 | 1, MT7628_GPIO_MODE_P4LED_KN), | |
53263a1c JC |
356 | { 0 } |
357 | }; | |
358 | ||
81857db9 JC |
359 | static inline int is_mt76x8(void) |
360 | { | |
418d29c8 JC |
361 | return ralink_soc == MT762X_SOC_MT7628AN || |
362 | ralink_soc == MT762X_SOC_MT7688; | |
81857db9 JC |
363 | } |
364 | ||
ded1e9d7 GJ |
365 | static __init u32 |
366 | mt7620_calc_rate(u32 ref_rate, u32 mul, u32 div) | |
367 | { | |
368 | u64 t; | |
369 | ||
370 | t = ref_rate; | |
371 | t *= mul; | |
372 | do_div(t, div); | |
373 | ||
374 | return t; | |
375 | } | |
376 | ||
377 | #define MHZ(x) ((x) * 1000 * 1000) | |
378 | ||
379 | static __init unsigned long | |
380 | mt7620_get_xtal_rate(void) | |
594bde68 | 381 | { |
ded1e9d7 GJ |
382 | u32 reg; |
383 | ||
384 | reg = rt_sysc_r32(SYSC_REG_SYSTEM_CONFIG0); | |
385 | if (reg & SYSCFG0_XTAL_FREQ_SEL) | |
386 | return MHZ(40); | |
387 | ||
388 | return MHZ(20); | |
389 | } | |
390 | ||
391 | static __init unsigned long | |
392 | mt7620_get_periph_rate(unsigned long xtal_rate) | |
393 | { | |
394 | u32 reg; | |
395 | ||
396 | reg = rt_sysc_r32(SYSC_REG_CLKCFG0); | |
397 | if (reg & CLKCFG0_PERI_CLK_SEL) | |
398 | return xtal_rate; | |
399 | ||
400 | return MHZ(40); | |
401 | } | |
594bde68 | 402 | |
ded1e9d7 GJ |
403 | static const u32 mt7620_clk_divider[] __initconst = { 2, 3, 4, 8 }; |
404 | ||
405 | static __init unsigned long | |
406 | mt7620_get_cpu_pll_rate(unsigned long xtal_rate) | |
407 | { | |
408 | u32 reg; | |
409 | u32 mul; | |
410 | u32 div; | |
411 | ||
412 | reg = rt_sysc_r32(SYSC_REG_CPLL_CONFIG0); | |
413 | if (reg & CPLL_CFG0_BYPASS_REF_CLK) | |
414 | return xtal_rate; | |
415 | ||
416 | if ((reg & CPLL_CFG0_SW_CFG) == 0) | |
417 | return MHZ(600); | |
418 | ||
419 | mul = (reg >> CPLL_CFG0_PLL_MULT_RATIO_SHIFT) & | |
420 | CPLL_CFG0_PLL_MULT_RATIO_MASK; | |
421 | mul += 24; | |
422 | if (reg & CPLL_CFG0_LC_CURFCK) | |
423 | mul *= 2; | |
424 | ||
425 | div = (reg >> CPLL_CFG0_PLL_DIV_RATIO_SHIFT) & | |
426 | CPLL_CFG0_PLL_DIV_RATIO_MASK; | |
427 | ||
428 | WARN_ON(div >= ARRAY_SIZE(mt7620_clk_divider)); | |
429 | ||
430 | return mt7620_calc_rate(xtal_rate, mul, mt7620_clk_divider[div]); | |
431 | } | |
432 | ||
433 | static __init unsigned long | |
434 | mt7620_get_pll_rate(unsigned long xtal_rate, unsigned long cpu_pll_rate) | |
435 | { | |
436 | u32 reg; | |
437 | ||
438 | reg = rt_sysc_r32(SYSC_REG_CPLL_CONFIG1); | |
439 | if (reg & CPLL_CFG1_CPU_AUX1) | |
440 | return xtal_rate; | |
441 | ||
442 | if (reg & CPLL_CFG1_CPU_AUX0) | |
443 | return MHZ(480); | |
444 | ||
445 | return cpu_pll_rate; | |
446 | } | |
447 | ||
448 | static __init unsigned long | |
449 | mt7620_get_cpu_rate(unsigned long pll_rate) | |
450 | { | |
451 | u32 reg; | |
452 | u32 mul; | |
453 | u32 div; | |
454 | ||
455 | reg = rt_sysc_r32(SYSC_REG_CPU_SYS_CLKCFG); | |
456 | ||
457 | mul = reg & CPU_SYS_CLKCFG_CPU_FFRAC_MASK; | |
458 | div = (reg >> CPU_SYS_CLKCFG_CPU_FDIV_SHIFT) & | |
459 | CPU_SYS_CLKCFG_CPU_FDIV_MASK; | |
460 | ||
461 | return mt7620_calc_rate(pll_rate, mul, div); | |
462 | } | |
463 | ||
464 | static const u32 mt7620_ocp_dividers[16] __initconst = { | |
465 | [CPU_SYS_CLKCFG_OCP_RATIO_2] = 2, | |
466 | [CPU_SYS_CLKCFG_OCP_RATIO_3] = 3, | |
467 | [CPU_SYS_CLKCFG_OCP_RATIO_4] = 4, | |
468 | [CPU_SYS_CLKCFG_OCP_RATIO_5] = 5, | |
469 | [CPU_SYS_CLKCFG_OCP_RATIO_10] = 10, | |
470 | }; | |
471 | ||
472 | static __init unsigned long | |
473 | mt7620_get_dram_rate(unsigned long pll_rate) | |
474 | { | |
594bde68 | 475 | if (dram_type == SYSCFG0_DRAM_TYPE_SDRAM) |
ded1e9d7 GJ |
476 | return pll_rate / 4; |
477 | ||
478 | return pll_rate / 3; | |
479 | } | |
480 | ||
481 | static __init unsigned long | |
482 | mt7620_get_sys_rate(unsigned long cpu_rate) | |
483 | { | |
484 | u32 reg; | |
485 | u32 ocp_ratio; | |
486 | u32 div; | |
487 | ||
488 | reg = rt_sysc_r32(SYSC_REG_CPU_SYS_CLKCFG); | |
489 | ||
490 | ocp_ratio = (reg >> CPU_SYS_CLKCFG_OCP_RATIO_SHIFT) & | |
491 | CPU_SYS_CLKCFG_OCP_RATIO_MASK; | |
492 | ||
493 | if (WARN_ON(ocp_ratio >= ARRAY_SIZE(mt7620_ocp_dividers))) | |
494 | return cpu_rate; | |
495 | ||
496 | div = mt7620_ocp_dividers[ocp_ratio]; | |
497 | if (WARN(!div, "invalid divider for OCP ratio %u", ocp_ratio)) | |
498 | return cpu_rate; | |
499 | ||
500 | return cpu_rate / div; | |
501 | } | |
502 | ||
503 | void __init ralink_clk_init(void) | |
504 | { | |
505 | unsigned long xtal_rate; | |
506 | unsigned long cpu_pll_rate; | |
507 | unsigned long pll_rate; | |
508 | unsigned long cpu_rate; | |
509 | unsigned long sys_rate; | |
510 | unsigned long dram_rate; | |
511 | unsigned long periph_rate; | |
512 | ||
513 | xtal_rate = mt7620_get_xtal_rate(); | |
514 | ||
ded1e9d7 GJ |
515 | #define RFMT(label) label ":%lu.%03luMHz " |
516 | #define RINT(x) ((x) / 1000000) | |
517 | #define RFRAC(x) (((x) / 1000) % 1000) | |
518 | ||
81857db9 | 519 | if (is_mt76x8()) { |
53263a1c JC |
520 | if (xtal_rate == MHZ(40)) |
521 | cpu_rate = MHZ(580); | |
522 | else | |
523 | cpu_rate = MHZ(575); | |
524 | dram_rate = sys_rate = cpu_rate / 3; | |
525 | periph_rate = MHZ(40); | |
526 | ||
527 | ralink_clk_add("10000d00.uartlite", periph_rate); | |
528 | ralink_clk_add("10000e00.uartlite", periph_rate); | |
529 | } else { | |
530 | cpu_pll_rate = mt7620_get_cpu_pll_rate(xtal_rate); | |
531 | pll_rate = mt7620_get_pll_rate(xtal_rate, cpu_pll_rate); | |
532 | ||
533 | cpu_rate = mt7620_get_cpu_rate(pll_rate); | |
534 | dram_rate = mt7620_get_dram_rate(pll_rate); | |
535 | sys_rate = mt7620_get_sys_rate(cpu_rate); | |
536 | periph_rate = mt7620_get_periph_rate(xtal_rate); | |
537 | ||
538 | pr_debug(RFMT("XTAL") RFMT("CPU_PLL") RFMT("PLL"), | |
539 | RINT(xtal_rate), RFRAC(xtal_rate), | |
540 | RINT(cpu_pll_rate), RFRAC(cpu_pll_rate), | |
541 | RINT(pll_rate), RFRAC(pll_rate)); | |
542 | ||
543 | ralink_clk_add("10000500.uart", periph_rate); | |
544 | } | |
ded1e9d7 GJ |
545 | |
546 | pr_debug(RFMT("CPU") RFMT("DRAM") RFMT("SYS") RFMT("PERIPH"), | |
547 | RINT(cpu_rate), RFRAC(cpu_rate), | |
548 | RINT(dram_rate), RFRAC(dram_rate), | |
549 | RINT(sys_rate), RFRAC(sys_rate), | |
550 | RINT(periph_rate), RFRAC(periph_rate)); | |
ded1e9d7 GJ |
551 | #undef RFRAC |
552 | #undef RINT | |
553 | #undef RFMT | |
594bde68 JC |
554 | |
555 | ralink_clk_add("cpu", cpu_rate); | |
ded1e9d7 | 556 | ralink_clk_add("10000100.timer", periph_rate); |
68c9b7ed | 557 | ralink_clk_add("10000120.watchdog", periph_rate); |
0d464968 | 558 | ralink_clk_add("10000b00.spi", sys_rate); |
3b2e7c7c | 559 | ralink_clk_add("10000b40.spi", sys_rate); |
ded1e9d7 | 560 | ralink_clk_add("10000c00.uartlite", periph_rate); |
3b2e7c7c JC |
561 | ralink_clk_add("10000d00.uart1", periph_rate); |
562 | ralink_clk_add("10000e00.uart2", periph_rate); | |
1dc5c2cf | 563 | ralink_clk_add("10180000.wmac", xtal_rate); |
b361bd76 | 564 | |
fad25222 | 565 | if (IS_ENABLED(CONFIG_USB) && !is_mt76x8()) { |
b361bd76 JC |
566 | /* |
567 | * When the CPU goes into sleep mode, the BUS clock will be | |
568 | * too low for USB to function properly. Adjust the busses | |
569 | * fractional divider to fix this | |
570 | */ | |
571 | u32 val = rt_sysc_r32(SYSC_REG_CPU_SYS_CLKCFG); | |
572 | ||
573 | val &= ~(CLKCFG_FDIV_MASK | CLKCFG_FFRAC_MASK); | |
574 | val |= CLKCFG_FDIV_USB_VAL | CLKCFG_FFRAC_USB_VAL; | |
575 | ||
576 | rt_sysc_w32(val, SYSC_REG_CPU_SYS_CLKCFG); | |
577 | } | |
594bde68 JC |
578 | } |
579 | ||
580 | void __init ralink_of_remap(void) | |
581 | { | |
582 | rt_sysc_membase = plat_of_remap_node("ralink,mt7620a-sysc"); | |
583 | rt_memc_membase = plat_of_remap_node("ralink,mt7620a-memc"); | |
584 | ||
585 | if (!rt_sysc_membase || !rt_memc_membase) | |
586 | panic("Failed to remap core resources"); | |
587 | } | |
588 | ||
53263a1c JC |
589 | static __init void |
590 | mt7620_dram_init(struct ralink_soc_info *soc_info) | |
591 | { | |
592 | switch (dram_type) { | |
593 | case SYSCFG0_DRAM_TYPE_SDRAM: | |
594 | pr_info("Board has SDRAM\n"); | |
595 | soc_info->mem_size_min = MT7620_SDRAM_SIZE_MIN; | |
596 | soc_info->mem_size_max = MT7620_SDRAM_SIZE_MAX; | |
597 | break; | |
598 | ||
599 | case SYSCFG0_DRAM_TYPE_DDR1: | |
600 | pr_info("Board has DDR1\n"); | |
601 | soc_info->mem_size_min = MT7620_DDR1_SIZE_MIN; | |
602 | soc_info->mem_size_max = MT7620_DDR1_SIZE_MAX; | |
603 | break; | |
604 | ||
605 | case SYSCFG0_DRAM_TYPE_DDR2: | |
606 | pr_info("Board has DDR2\n"); | |
607 | soc_info->mem_size_min = MT7620_DDR2_SIZE_MIN; | |
608 | soc_info->mem_size_max = MT7620_DDR2_SIZE_MAX; | |
609 | break; | |
610 | default: | |
611 | BUG(); | |
612 | } | |
613 | } | |
614 | ||
615 | static __init void | |
616 | mt7628_dram_init(struct ralink_soc_info *soc_info) | |
617 | { | |
618 | switch (dram_type) { | |
619 | case SYSCFG0_DRAM_TYPE_DDR1_MT7628: | |
620 | pr_info("Board has DDR1\n"); | |
621 | soc_info->mem_size_min = MT7620_DDR1_SIZE_MIN; | |
622 | soc_info->mem_size_max = MT7620_DDR1_SIZE_MAX; | |
623 | break; | |
624 | ||
625 | case SYSCFG0_DRAM_TYPE_DDR2_MT7628: | |
626 | pr_info("Board has DDR2\n"); | |
627 | soc_info->mem_size_min = MT7620_DDR2_SIZE_MIN; | |
628 | soc_info->mem_size_max = MT7620_DDR2_SIZE_MAX; | |
629 | break; | |
630 | default: | |
631 | BUG(); | |
632 | } | |
633 | } | |
634 | ||
594bde68 JC |
635 | void prom_soc_init(struct ralink_soc_info *soc_info) |
636 | { | |
637 | void __iomem *sysc = (void __iomem *) KSEG1ADDR(MT7620_SYSC_BASE); | |
638 | unsigned char *name = NULL; | |
639 | u32 n0; | |
640 | u32 n1; | |
641 | u32 rev; | |
642 | u32 cfg0; | |
2adf550f JC |
643 | u32 pmu0; |
644 | u32 pmu1; | |
1dc5c2cf | 645 | u32 bga; |
594bde68 JC |
646 | |
647 | n0 = __raw_readl(sysc + SYSC_REG_CHIP_NAME0); | |
648 | n1 = __raw_readl(sysc + SYSC_REG_CHIP_NAME1); | |
1dc5c2cf JC |
649 | rev = __raw_readl(sysc + SYSC_REG_CHIP_REV); |
650 | bga = (rev >> CHIP_REV_PKG_SHIFT) & CHIP_REV_PKG_MASK; | |
594bde68 | 651 | |
53263a1c JC |
652 | if (n0 == MT7620_CHIP_NAME0 && n1 == MT7620_CHIP_NAME1) { |
653 | if (bga) { | |
418d29c8 | 654 | ralink_soc = MT762X_SOC_MT7620A; |
53263a1c JC |
655 | name = "MT7620A"; |
656 | soc_info->compatible = "ralink,mt7620a-soc"; | |
657 | } else { | |
418d29c8 | 658 | ralink_soc = MT762X_SOC_MT7620N; |
53263a1c JC |
659 | name = "MT7620N"; |
660 | soc_info->compatible = "ralink,mt7620n-soc"; | |
53263a1c JC |
661 | } |
662 | } else if (n0 == MT7620_CHIP_NAME0 && n1 == MT7628_CHIP_NAME1) { | |
81857db9 JC |
663 | u32 efuse = __raw_readl(sysc + SYSC_REG_EFUSE_CFG); |
664 | ||
665 | if (efuse & EFUSE_MT7688) { | |
418d29c8 | 666 | ralink_soc = MT762X_SOC_MT7688; |
81857db9 JC |
667 | name = "MT7688"; |
668 | } else { | |
418d29c8 | 669 | ralink_soc = MT762X_SOC_MT7628AN; |
81857db9 JC |
670 | name = "MT7628AN"; |
671 | } | |
53263a1c JC |
672 | soc_info->compatible = "ralink,mt7628an-soc"; |
673 | } else { | |
674 | panic("mt762x: unknown SoC, n0:%08x n1:%08x\n", n0, n1); | |
594bde68 JC |
675 | } |
676 | ||
594bde68 | 677 | snprintf(soc_info->sys_type, RAMIPS_SYS_TYPE_LEN, |
3bca798b | 678 | "MediaTek %s ver:%u eco:%u", |
594bde68 JC |
679 | name, |
680 | (rev >> CHIP_REV_VER_SHIFT) & CHIP_REV_VER_MASK, | |
681 | (rev & CHIP_REV_ECO_MASK)); | |
682 | ||
683 | cfg0 = __raw_readl(sysc + SYSC_REG_SYSTEM_CONFIG0); | |
86ce9a34 | 684 | if (is_mt76x8()) { |
81857db9 | 685 | dram_type = cfg0 & DRAM_TYPE_MT7628_MASK; |
86ce9a34 | 686 | } else { |
81857db9 JC |
687 | dram_type = (cfg0 >> SYSCFG0_DRAM_TYPE_SHIFT) & |
688 | SYSCFG0_DRAM_TYPE_MASK; | |
86ce9a34 SN |
689 | if (dram_type == SYSCFG0_DRAM_TYPE_UNKNOWN) |
690 | dram_type = SYSCFG0_DRAM_TYPE_SDRAM; | |
691 | } | |
51e39607 | 692 | |
51e39607 | 693 | soc_info->mem_base = MT7620_DRAM_BASE; |
81857db9 | 694 | if (is_mt76x8()) |
53263a1c JC |
695 | mt7628_dram_init(soc_info); |
696 | else | |
697 | mt7620_dram_init(soc_info); | |
2adf550f JC |
698 | |
699 | pmu0 = __raw_readl(sysc + PMU0_CFG); | |
700 | pmu1 = __raw_readl(sysc + PMU1_CFG); | |
701 | ||
702 | pr_info("Analog PMU set to %s control\n", | |
703 | (pmu0 & PMU_SW_SET) ? ("sw") : ("hw")); | |
704 | pr_info("Digital PMU set to %s control\n", | |
705 | (pmu1 & DIG_SW_SEL) ? ("sw") : ("hw")); | |
53263a1c | 706 | |
81857db9 | 707 | if (is_mt76x8()) |
53263a1c JC |
708 | rt2880_pinmux_data = mt7628an_pinmux_data; |
709 | else | |
710 | rt2880_pinmux_data = mt7620a_pinmux_data; | |
594bde68 | 711 | } |