1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2008 Stefan Roese <sr@denx.de>, DENX Software Engineering
4 *
5 * Copyright (C) 2006 Micronas GmbH
6 */
7
8 #include <common.h>
9 #include "vct.h"
10
11 typedef union _TOP_PINMUX_t
12 {
13 u32 reg;
14 struct {
15 u32 res : 24; /* reserved */
16 u32 drive : 2; /* Driver strength */
17 u32 slew : 1; /* Slew rate */
18 u32 strig : 1; /* Schmitt trigger input*/
19 u32 pu_pd : 2; /* Pull up/ pull down */
20 u32 funsel : 2; /* Pin function */
21 } Bits;
22 } TOP_PINMUX_t;
23
24 #if defined(CONFIG_VCT_PREMIUM) || defined(CONFIG_VCT_PLATINUM)
25
top_read_pin(int pin)26 static TOP_PINMUX_t top_read_pin(int pin)
27 {
28 TOP_PINMUX_t reg;
29
30 switch (pin) {
31 case 2:
32 case 3:
33 case 6:
34 case 9:
35 reg.reg = 0xdeadbeef;
36 break;
37 case 4:
38 reg.reg = reg_read(FWSRAM_TOP_SCL_CFG(FWSRAM_BASE));
39 break;
40 case 5:
41 reg.reg = reg_read(FWSRAM_TOP_SDA_CFG(FWSRAM_BASE));
42 break;
43 case 7:
44 reg.reg = reg_read(FWSRAM_TOP_TDO_CFG(FWSRAM_BASE));
45 break;
46 case 8:
47 reg.reg = reg_read(FWSRAM_TOP_GPIO2_0_CFG(FWSRAM_BASE));
48 break;
49 case 10:
50 case 11:
51 case 12:
52 case 13:
53 case 14:
54 case 15:
55 case 16:
56 reg.reg = reg_read(FWSRAM_BASE + FWSRAM_TOP_GPIO2_1_CFG_OFFS +
57 ((pin - 10) * 4));
58 break;
59 default:
60 reg.reg = reg_read(TOP_BASE + (pin * 4));
61 break;
62 }
63
64 return reg;
65 }
66
top_write_pin(int pin,TOP_PINMUX_t reg)67 static void top_write_pin(int pin, TOP_PINMUX_t reg)
68 {
69
70 switch (pin) {
71 case 4:
72 reg_write(FWSRAM_TOP_SCL_CFG(FWSRAM_BASE), reg.reg);
73 break;
74 case 5:
75 reg_write(FWSRAM_TOP_SDA_CFG(FWSRAM_BASE), reg.reg);
76 break;
77 case 7:
78 reg_write(FWSRAM_TOP_TDO_CFG(FWSRAM_BASE), reg.reg);
79 break;
80 case 8:
81 reg_write(FWSRAM_TOP_GPIO2_0_CFG(FWSRAM_BASE), reg.reg);
82 break;
83 case 10:
84 case 11:
85 case 12:
86 case 13:
87 case 14:
88 case 15:
89 case 16:
90 reg_write(FWSRAM_BASE + FWSRAM_TOP_GPIO2_1_CFG_OFFS +
91 ((pin - 10) * 4), reg.reg);
92 break;
93 default:
94 reg_write(TOP_BASE + (pin * 4), reg.reg);
95 break;
96 }
97 }
98
top_set_pin(int pin,int func)99 int top_set_pin(int pin, int func)
100 {
101 TOP_PINMUX_t reg;
102
103 /* check global range */
104 if ((pin < 0) || (pin > 170) || (func < 0) || (func > 3))
105 return -1; /* pin number or function out of valid range */
106
107 /* check undefined values; */
108 if ((pin == 2) || (pin == 3) || (pin == 6) || (pin == 9))
109 return -1; /* pin number out of valid range */
110
111 reg = top_read_pin(pin);
112 reg.Bits.funsel = func;
113 top_write_pin(pin, reg);
114
115 return 0;
116 }
117
118 #endif
119
120 #if defined(CONFIG_VCT_PLATINUMAVC)
121
top_set_pin(int pin,int func)122 int top_set_pin(int pin, int func)
123 {
124 TOP_PINMUX_t reg;
125
126 /* check global range */
127 if ((pin < 0) || (pin > 158))
128 return -1; /* pin number or function out of valid range */
129
130 reg.reg = reg_read(TOP_BASE + (pin * 4));
131 reg.Bits.funsel = func;
132 reg_write(TOP_BASE + (pin * 4), reg.reg);
133
134 return 0;
135 }
136
137 #endif
138
vct_pin_mux_initialize(void)139 void vct_pin_mux_initialize(void)
140 {
141 #if defined(CONFIG_VCT_PREMIUM) || defined(CONFIG_VCT_PLATINUM)
142 top_set_pin(34, 01); /* EBI_CS0 */
143 top_set_pin(33, 01); /* EBI_CS1 */
144 top_set_pin(32, 01); /* EBI_CS2 */
145 top_set_pin(100, 02); /* EBI_CS3 */
146 top_set_pin(101, 02); /* EBI_CS4 */
147 top_set_pin(102, 02); /* EBI_CS5 */
148 top_set_pin(103, 02); /* EBI_CS6 */
149 top_set_pin(104, 02); /* EBI_CS7 top_set_pin(104,03); EBI_GENIO3 */
150 top_set_pin(35, 01); /* EBI_ALE */
151 top_set_pin(36, 01); /* EBI_ADDR15 */
152 top_set_pin(37, 01); /* EBI_ADDR14 top_set_pin(78,03); EBI_ADDR14 */
153 top_set_pin(38, 01); /* EBI_ADDR13 */
154 top_set_pin(39, 01); /* EBI_ADDR12 */
155 top_set_pin(40, 01); /* EBI_ADDR11 */
156 top_set_pin(41, 01); /* EBI_ADDR10 */
157 top_set_pin(42, 01); /* EBI_ADDR9 */
158 top_set_pin(43, 01); /* EBI_ADDR8 */
159 top_set_pin(44, 01); /* EBI_ADDR7 */
160 top_set_pin(45, 01); /* EBI_ADDR6 */
161 top_set_pin(46, 01); /* EBI_ADDR5 */
162 top_set_pin(47, 01); /* EBI_ADDR4 */
163 top_set_pin(48, 01); /* EBI_ADDR3 */
164 top_set_pin(49, 01); /* EBI_ADDR2 */
165 top_set_pin(50, 01); /* EBI_ADDR1 */
166 top_set_pin(51, 01); /* EBI_ADDR0 */
167 top_set_pin(52, 01); /* EBI_DIR */
168 top_set_pin(53, 01); /* EBI_DAT15 top_set_pin(81,01); EBI_DAT15 */
169 top_set_pin(54, 01); /* EBI_DAT14 top_set_pin(82,01); EBI_DAT14 */
170 top_set_pin(55, 01); /* EBI_DAT13 top_set_pin(83,01); EBI_DAT13 */
171 top_set_pin(56, 01); /* EBI_DAT12 top_set_pin(84,01); EBI_DAT12 */
172 top_set_pin(57, 01); /* EBI_DAT11 top_set_pin(85,01); EBI_DAT11 */
173 top_set_pin(58, 01); /* EBI_DAT10 top_set_pin(86,01); EBI_DAT10 */
174 top_set_pin(59, 01); /* EBI_DAT9 top_set_pin(87,01); EBI_DAT9 */
175 top_set_pin(60, 01); /* EBI_DAT8 top_set_pin(88,01); EBI_DAT8 */
176 top_set_pin(61, 01); /* EBI_DAT7 */
177 top_set_pin(62, 01); /* EBI_DAT6 */
178 top_set_pin(63, 01); /* EBI_DAT5 */
179 top_set_pin(64, 01); /* EBI_DAT4 */
180 top_set_pin(65, 01); /* EBI_DAT3 */
181 top_set_pin(66, 01); /* EBI_DAT2 */
182 top_set_pin(67, 01); /* EBI_DAT1 */
183 top_set_pin(68, 01); /* EBI_DAT0 */
184 top_set_pin(69, 01); /* EBI_IORD */
185 top_set_pin(70, 01); /* EBI_IOWR */
186 top_set_pin(71, 01); /* EBI_WE */
187 top_set_pin(72, 01); /* EBI_OE */
188 top_set_pin(73, 01); /* EBI_IORDY */
189 top_set_pin(95, 02); /* EBI_EBI_DMACK*/
190 top_set_pin(112, 02); /* EBI_IRQ0 */
191 top_set_pin(111, 02); /* EBI_IRQ1 top_set_pin(111,03); EBI_DMARQ */
192 top_set_pin(107, 02); /* EBI_IRQ2 */
193 top_set_pin(108, 02); /* EBI_IRQ3 */
194 top_set_pin(30, 01); /* EBI_GENIO1 top_set_pin(99,03); EBI_GENIO1 */
195 top_set_pin(31, 01); /* EBI_GENIO2 top_set_pin(98,03); EBI_GENIO2 */
196 top_set_pin(105, 02); /* EBI_GENIO3 top_set_pin(104,03); EBI_GENIO3 */
197 top_set_pin(106, 02); /* EBI_GENIO4 top_set_pin(144,02); EBI_GENIO4 */
198 top_set_pin(109, 02); /* EBI_GENIO5 top_set_pin(142,02); EBI_GENIO5 */
199 top_set_pin(110, 02); /* EBI_BURST_CLK */
200 #endif
201
202 #if defined(CONFIG_VCT_PLATINUMAVC)
203 top_set_pin(19, 01); /* EBI_CS0 */
204 top_set_pin(18, 01); /* EBI_CS1 */
205 top_set_pin(17, 01); /* EBI_CS2 */
206 top_set_pin(92, 02); /* EBI_CS3 */
207 top_set_pin(93, 02); /* EBI_CS4 */
208 top_set_pin(95, 02); /* EBI_CS6 */
209 top_set_pin(96, 02); /* EBI_CS7 top_set_pin(104,03); EBI_GENIO3 */
210 top_set_pin(20, 01); /* EBI_ALE */
211 top_set_pin(21, 01); /* EBI_ADDR15 */
212 top_set_pin(22, 01); /* EBI_ADDR14 top_set_pin(78,03); EBI_ADDR14 */
213 top_set_pin(23, 01); /* EBI_ADDR13 */
214 top_set_pin(24, 01); /* EBI_ADDR12 */
215 top_set_pin(25, 01); /* EBI_ADDR11 */
216 top_set_pin(26, 01); /* EBI_ADDR10 */
217 top_set_pin(27, 01); /* EBI_ADDR9 */
218 top_set_pin(28, 01); /* EBI_ADDR8 */
219 top_set_pin(29, 01); /* EBI_ADDR7 */
220 top_set_pin(30, 01); /* EBI_ADDR6 */
221 top_set_pin(31, 01); /* EBI_ADDR5 */
222 top_set_pin(32, 01); /* EBI_ADDR4 */
223 top_set_pin(33, 01); /* EBI_ADDR3 */
224 top_set_pin(34, 01); /* EBI_ADDR2 */
225 top_set_pin(35, 01); /* EBI_ADDR1 */
226 top_set_pin(36, 01); /* EBI_ADDR0 */
227 top_set_pin(37, 01); /* EBI_DIR */
228 top_set_pin(38, 01); /* EBI_DAT15 top_set_pin(81,01); EBI_DAT15 */
229 top_set_pin(39, 01); /* EBI_DAT14 top_set_pin(82,01); EBI_DAT14 */
230 top_set_pin(40, 01); /* EBI_DAT13 top_set_pin(83,01); EBI_DAT13 */
231 top_set_pin(41, 01); /* EBI_DAT12 top_set_pin(84,01); EBI_DAT12 */
232 top_set_pin(42, 01); /* EBI_DAT11 top_set_pin(85,01); EBI_DAT11 */
233 top_set_pin(43, 01); /* EBI_DAT10 top_set_pin(86,01); EBI_DAT10 */
234 top_set_pin(44, 01); /* EBI_DAT9 top_set_pin(87,01); EBI_DAT9 */
235 top_set_pin(45, 01); /* EBI_DAT8 top_set_pin(88,01); EBI_DAT8 */
236 top_set_pin(46, 01); /* EBI_DAT7 */
237 top_set_pin(47, 01); /* EBI_DAT6 */
238 top_set_pin(48, 01); /* EBI_DAT5 */
239 top_set_pin(49, 01); /* EBI_DAT4 */
240 top_set_pin(50, 01); /* EBI_DAT3 */
241 top_set_pin(51, 01); /* EBI_DAT2 */
242 top_set_pin(52, 01); /* EBI_DAT1 */
243 top_set_pin(53, 01); /* EBI_DAT0 */
244 top_set_pin(54, 01); /* EBI_IORD */
245 top_set_pin(55, 01); /* EBI_IOWR */
246 top_set_pin(56, 01); /* EBI_WE */
247 top_set_pin(57, 01); /* EBI_OE */
248 top_set_pin(58, 01); /* EBI_IORDY */
249 top_set_pin(87, 02); /* EBI_EBI_DMACK*/
250 top_set_pin(106, 02); /* EBI_IRQ0 */
251 top_set_pin(105, 02); /* EBI_IRQ1 top_set_pin(111,03); EBI_DMARQ */
252 top_set_pin(101, 02); /* EBI_IRQ2 */
253 top_set_pin(102, 02); /* EBI_IRQ3 */
254 top_set_pin(15, 01); /* EBI_GENIO1 top_set_pin(99,03); EBI_GENIO1 */
255 top_set_pin(16, 01); /* EBI_GENIO2 top_set_pin(98,03); EBI_GENIO2 */
256 top_set_pin(99, 02); /* EBI_GENIO3 top_set_pin(104,03); EBI_GENIO3 */
257 top_set_pin(100, 02); /* EBI_GENIO4 top_set_pin(144,02); EBI_GENIO4 */
258 top_set_pin(103, 02); /* EBI_GENIO5 top_set_pin(142,02); EBI_GENIO5 */
259 top_set_pin(104, 02); /* EBI_BURST_CLK */
260 #endif
261
262 /* I2C: Configure I2C-2 as GPIO to enable soft-i2c */
263 top_set_pin(0, 2); /* SCL2 on GPIO 11 */
264 top_set_pin(1, 2); /* SDA2 on GPIO 10 */
265
266 /* UART pins */
267 #if defined(CONFIG_VCT_PREMIUM) || defined(CONFIG_VCT_PLATINUM)
268 top_set_pin(141, 1);
269 top_set_pin(143, 1);
270 #endif
271 #if defined(CONFIG_VCT_PLATINUMAVC)
272 top_set_pin(107, 1);
273 top_set_pin(109, 1);
274 #endif
275 }
276