1 /*
2 * mux.c
3 *
4 * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation version 2.
9 *
10 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
11 * kind, whether express or implied; without even the implied warranty
12 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 */
16 #include <common.h>
17 #include <asm/arch/sys_proto.h>
18 #include <asm/arch/hardware.h>
19 #include <asm/arch/mux.h>
20 #include <asm/io.h>
21 #include <i2c.h>
22 #include "board.h"
24 static struct module_pin_mux uart0_pin_mux[] = {
25 {OFFSET(uart0_rxd), (MODE(0) | PULLUP_EN | RXACTIVE)}, /* UART0_RXD */
26 {OFFSET(uart0_txd), (MODE(0) | PULLUDEN)}, /* UART0_TXD */
27 {-1},
28 };
30 static struct module_pin_mux uart1_pin_mux[] = {
31 {OFFSET(uart1_rxd), (MODE(0) | PULLUP_EN | RXACTIVE)}, /* UART1_RXD */
32 {OFFSET(uart1_txd), (MODE(0) | PULLUDEN)}, /* UART1_TXD */
33 {-1},
34 };
36 static struct module_pin_mux uart2_pin_mux[] = {
37 {OFFSET(spi0_sclk), (MODE(1) | PULLUP_EN | RXACTIVE)}, /* UART2_RXD */
38 {OFFSET(spi0_d0), (MODE(1) | PULLUDEN)}, /* UART2_TXD */
39 {-1},
40 };
42 static struct module_pin_mux uart3_pin_mux[] = {
43 {OFFSET(spi0_cs1), (MODE(1) | PULLUP_EN | RXACTIVE)}, /* UART3_RXD */
44 {OFFSET(ecap0_in_pwm0_out), (MODE(1) | PULLUDEN)}, /* UART3_TXD */
45 {-1},
46 };
48 static struct module_pin_mux uart4_pin_mux[] = {
49 {OFFSET(gpmc_wait0), (MODE(6) | PULLUP_EN | RXACTIVE)}, /* UART4_RXD */
50 {OFFSET(gpmc_wpn), (MODE(6) | PULLUDEN)}, /* UART4_TXD */
51 {-1},
52 };
54 static struct module_pin_mux uart5_pin_mux[] = {
55 {OFFSET(lcd_data9), (MODE(4) | PULLUP_EN | RXACTIVE)}, /* UART5_RXD */
56 {OFFSET(lcd_data8), (MODE(4) | PULLUDEN)}, /* UART5_TXD */
57 {-1},
58 };
60 static struct module_pin_mux mmc0_pin_mux[] = {
61 {OFFSET(mmc0_dat3), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_DAT3 */
62 {OFFSET(mmc0_dat2), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_DAT2 */
63 {OFFSET(mmc0_dat1), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_DAT1 */
64 {OFFSET(mmc0_dat0), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_DAT0 */
65 {OFFSET(mmc0_clk), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_CLK */
66 {OFFSET(mmc0_cmd), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_CMD */
67 {OFFSET(mcasp0_aclkr), (MODE(4) | RXACTIVE)}, /* MMC0_WP */
68 {OFFSET(spi0_cs1), (MODE(5) | RXACTIVE | PULLUP_EN)}, /* MMC0_CD */
69 {-1},
70 };
72 static struct module_pin_mux mmc0_no_cd_pin_mux[] = {
73 {OFFSET(mmc0_dat3), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_DAT3 */
74 {OFFSET(mmc0_dat2), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_DAT2 */
75 {OFFSET(mmc0_dat1), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_DAT1 */
76 {OFFSET(mmc0_dat0), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_DAT0 */
77 {OFFSET(mmc0_clk), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_CLK */
78 {OFFSET(mmc0_cmd), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_CMD */
79 {OFFSET(mcasp0_aclkr), (MODE(4) | RXACTIVE)}, /* MMC0_WP */
80 {-1},
81 };
83 static struct module_pin_mux mmc0_pin_mux_sk_evm[] = {
84 {OFFSET(mmc0_dat3), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_DAT3 */
85 {OFFSET(mmc0_dat2), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_DAT2 */
86 {OFFSET(mmc0_dat1), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_DAT1 */
87 {OFFSET(mmc0_dat0), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_DAT0 */
88 {OFFSET(mmc0_clk), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_CLK */
89 {OFFSET(mmc0_cmd), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_CMD */
90 {OFFSET(spi0_cs1), (MODE(5) | RXACTIVE | PULLUP_EN)}, /* MMC0_CD */
91 {-1},
92 };
94 static struct module_pin_mux mmc1_pin_mux[] = {
95 {OFFSET(gpmc_ad3), (MODE(1) | RXACTIVE | PULLUP_EN)}, /* MMC1_DAT3 */
96 {OFFSET(gpmc_ad2), (MODE(1) | RXACTIVE | PULLUP_EN)}, /* MMC1_DAT2 */
97 {OFFSET(gpmc_ad1), (MODE(1) | RXACTIVE | PULLUP_EN)}, /* MMC1_DAT1 */
98 {OFFSET(gpmc_ad0), (MODE(1) | RXACTIVE | PULLUP_EN)}, /* MMC1_DAT0 */
99 {OFFSET(gpmc_csn1), (MODE(2) | RXACTIVE | PULLUP_EN)}, /* MMC1_CLK */
100 {OFFSET(gpmc_csn2), (MODE(2) | RXACTIVE | PULLUP_EN)}, /* MMC1_CMD */
101 {OFFSET(gpmc_csn0), (MODE(7) | RXACTIVE | PULLUP_EN)}, /* MMC1_WP */
102 {OFFSET(gpmc_advn_ale), (MODE(7) | RXACTIVE | PULLUP_EN)}, /* MMC1_CD */
103 {-1},
104 };
106 static struct module_pin_mux i2c0_pin_mux[] = {
107 {OFFSET(i2c0_sda), (MODE(0) | RXACTIVE |
108 PULLUDEN | SLEWCTRL)}, /* I2C_DATA */
109 {OFFSET(i2c0_scl), (MODE(0) | RXACTIVE |
110 PULLUDEN | SLEWCTRL)}, /* I2C_SCLK */
111 {-1},
112 };
114 static struct module_pin_mux i2c1_pin_mux[] = {
115 {OFFSET(spi0_d1), (MODE(2) | RXACTIVE |
116 PULLUDEN | SLEWCTRL)}, /* I2C_DATA */
117 {OFFSET(spi0_cs0), (MODE(2) | RXACTIVE |
118 PULLUDEN | SLEWCTRL)}, /* I2C_SCLK */
119 {-1},
120 };
122 static struct module_pin_mux spi0_pin_mux[] = {
123 {OFFSET(spi0_sclk), (MODE(0) | RXACTIVE | PULLUDEN)}, /* SPI0_SCLK */
124 {OFFSET(spi0_d0), (MODE(0) | RXACTIVE |
125 PULLUDEN | PULLUP_EN)}, /* SPI0_D0 */
126 {OFFSET(spi0_d1), (MODE(0) | RXACTIVE | PULLUDEN)}, /* SPI0_D1 */
127 {OFFSET(spi0_cs0), (MODE(0) | RXACTIVE |
128 PULLUDEN | PULLUP_EN)}, /* SPI0_CS0 */
129 {-1},
130 };
132 static struct module_pin_mux gpio0_7_pin_mux[] = {
133 {OFFSET(ecap0_in_pwm0_out), (MODE(7) | PULLUDEN)}, /* GPIO0_7 */
134 {-1},
135 };
137 static struct module_pin_mux rgmii1_pin_mux[] = {
138 {OFFSET(mii1_txen), MODE(2)}, /* RGMII1_TCTL */
139 {OFFSET(mii1_rxdv), MODE(2) | RXACTIVE}, /* RGMII1_RCTL */
140 {OFFSET(mii1_txd3), MODE(2)}, /* RGMII1_TD3 */
141 {OFFSET(mii1_txd2), MODE(2)}, /* RGMII1_TD2 */
142 {OFFSET(mii1_txd1), MODE(2)}, /* RGMII1_TD1 */
143 {OFFSET(mii1_txd0), MODE(2)}, /* RGMII1_TD0 */
144 {OFFSET(mii1_txclk), MODE(2)}, /* RGMII1_TCLK */
145 {OFFSET(mii1_rxclk), MODE(2) | RXACTIVE}, /* RGMII1_RCLK */
146 {OFFSET(mii1_rxd3), MODE(2) | RXACTIVE}, /* RGMII1_RD3 */
147 {OFFSET(mii1_rxd2), MODE(2) | RXACTIVE}, /* RGMII1_RD2 */
148 {OFFSET(mii1_rxd1), MODE(2) | RXACTIVE}, /* RGMII1_RD1 */
149 {OFFSET(mii1_rxd0), MODE(2) | RXACTIVE}, /* RGMII1_RD0 */
150 {OFFSET(mdio_data), MODE(0) | RXACTIVE | PULLUP_EN},/* MDIO_DATA */
151 {OFFSET(mdio_clk), MODE(0) | PULLUP_EN}, /* MDIO_CLK */
152 {-1},
153 };
155 static struct module_pin_mux mii1_pin_mux[] = {
156 {OFFSET(mii1_rxerr), MODE(0) | RXACTIVE}, /* MII1_RXERR */
157 {OFFSET(mii1_txen), MODE(0)}, /* MII1_TXEN */
158 {OFFSET(mii1_rxdv), MODE(0) | RXACTIVE}, /* MII1_RXDV */
159 {OFFSET(mii1_txd3), MODE(0)}, /* MII1_TXD3 */
160 {OFFSET(mii1_txd2), MODE(0)}, /* MII1_TXD2 */
161 {OFFSET(mii1_txd1), MODE(0)}, /* MII1_TXD1 */
162 {OFFSET(mii1_txd0), MODE(0)}, /* MII1_TXD0 */
163 {OFFSET(mii1_txclk), MODE(0) | RXACTIVE}, /* MII1_TXCLK */
164 {OFFSET(mii1_rxclk), MODE(0) | RXACTIVE}, /* MII1_RXCLK */
165 {OFFSET(mii1_rxd3), MODE(0) | RXACTIVE}, /* MII1_RXD3 */
166 {OFFSET(mii1_rxd2), MODE(0) | RXACTIVE}, /* MII1_RXD2 */
167 {OFFSET(mii1_rxd1), MODE(0) | RXACTIVE}, /* MII1_RXD1 */
168 {OFFSET(mii1_rxd0), MODE(0) | RXACTIVE}, /* MII1_RXD0 */
169 {OFFSET(mdio_data), MODE(0) | RXACTIVE | PULLUP_EN}, /* MDIO_DATA */
170 {OFFSET(mdio_clk), MODE(0) | PULLUP_EN}, /* MDIO_CLK */
171 {-1},
172 };
174 static struct module_pin_mux nand_pin_mux[] = {
175 {OFFSET(gpmc_ad0), (MODE(0) | PULLUP_EN | RXACTIVE)}, /* NAND AD0 */
176 {OFFSET(gpmc_ad1), (MODE(0) | PULLUP_EN | RXACTIVE)}, /* NAND AD1 */
177 {OFFSET(gpmc_ad2), (MODE(0) | PULLUP_EN | RXACTIVE)}, /* NAND AD2 */
178 {OFFSET(gpmc_ad3), (MODE(0) | PULLUP_EN | RXACTIVE)}, /* NAND AD3 */
179 {OFFSET(gpmc_ad4), (MODE(0) | PULLUP_EN | RXACTIVE)}, /* NAND AD4 */
180 {OFFSET(gpmc_ad5), (MODE(0) | PULLUP_EN | RXACTIVE)}, /* NAND AD5 */
181 {OFFSET(gpmc_ad6), (MODE(0) | PULLUP_EN | RXACTIVE)}, /* NAND AD6 */
182 {OFFSET(gpmc_ad7), (MODE(0) | PULLUP_EN | RXACTIVE)}, /* NAND AD7 */
183 {OFFSET(gpmc_wait0), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* NAND WAIT */
184 {OFFSET(gpmc_wpn), (MODE(7) | PULLUP_EN | RXACTIVE)}, /* NAND_WPN */
185 {OFFSET(gpmc_csn0), (MODE(0) | PULLUDEN)}, /* NAND_CS0 */
186 {OFFSET(gpmc_advn_ale), (MODE(0) | PULLUDEN)}, /* NAND_ADV_ALE */
187 {OFFSET(gpmc_oen_ren), (MODE(0) | PULLUDEN)}, /* NAND_OE */
188 {OFFSET(gpmc_wen), (MODE(0) | PULLUDEN)}, /* NAND_WEN */
189 {OFFSET(gpmc_be0n_cle), (MODE(0) | PULLUDEN)}, /* NAND_BE_CLE */
190 {-1},
191 };
193 void enable_uart0_pin_mux(void)
194 {
195 configure_module_pin_mux(uart0_pin_mux);
196 }
198 void enable_uart1_pin_mux(void)
199 {
200 configure_module_pin_mux(uart1_pin_mux);
201 }
203 void enable_uart2_pin_mux(void)
204 {
205 configure_module_pin_mux(uart2_pin_mux);
206 }
208 void enable_uart3_pin_mux(void)
209 {
210 configure_module_pin_mux(uart3_pin_mux);
211 }
213 void enable_uart4_pin_mux(void)
214 {
215 configure_module_pin_mux(uart4_pin_mux);
216 }
218 void enable_uart5_pin_mux(void)
219 {
220 configure_module_pin_mux(uart5_pin_mux);
221 }
223 void enable_i2c0_pin_mux(void)
224 {
225 configure_module_pin_mux(i2c0_pin_mux);
226 }
228 /*
229 * The AM335x GP EVM, if daughter card(s) are connected, can have 8
230 * different profiles. These profiles determine what peripherals are
231 * valid and need pinmux to be configured.
232 */
233 #define PROFILE_NONE 0x0
234 #define PROFILE_0 (1 << 0)
235 #define PROFILE_1 (1 << 1)
236 #define PROFILE_2 (1 << 2)
237 #define PROFILE_3 (1 << 3)
238 #define PROFILE_4 (1 << 4)
239 #define PROFILE_5 (1 << 5)
240 #define PROFILE_6 (1 << 6)
241 #define PROFILE_7 (1 << 7)
242 #define PROFILE_MASK 0x7
243 #define PROFILE_ALL 0xFF
245 /* CPLD registers */
246 #define I2C_CPLD_ADDR 0x35
247 #define CFG_REG 0x10
249 static unsigned short detect_daughter_board_profile(void)
250 {
251 unsigned short val;
253 if (i2c_probe(I2C_CPLD_ADDR))
254 return PROFILE_NONE;
256 if (i2c_read(I2C_CPLD_ADDR, CFG_REG, 1, (unsigned char *)(&val), 2))
257 return PROFILE_NONE;
259 return (1 << (val & PROFILE_MASK));
260 }
262 void enable_board_pin_mux(struct am335x_baseboard_id *header)
263 {
264 /* Do board-specific muxes. */
265 if (!strncmp(header->name, "A335BONE", HDR_NAME_LEN)) {
266 /* Beaglebone pinmux */
267 configure_module_pin_mux(i2c1_pin_mux);
268 configure_module_pin_mux(mii1_pin_mux);
269 configure_module_pin_mux(mmc0_pin_mux);
270 configure_module_pin_mux(mmc1_pin_mux);
271 } else if (!strncmp(header->config, "SKU#01", 6)) {
272 /* General Purpose EVM */
273 unsigned short profile = detect_daughter_board_profile();
274 configure_module_pin_mux(rgmii1_pin_mux);
275 configure_module_pin_mux(mmc0_pin_mux);
276 /* In profile #2 i2c1 and spi0 conflict. */
277 if (profile & ~PROFILE_2)
278 configure_module_pin_mux(i2c1_pin_mux);
279 /* Profiles 2 & 3 don't have NAND */
280 if (profile & ~(PROFILE_2 | PROFILE_3))
281 configure_module_pin_mux(nand_pin_mux);
282 else if (profile == PROFILE_2) {
283 configure_module_pin_mux(mmc1_pin_mux);
284 configure_module_pin_mux(spi0_pin_mux);
285 }
286 } else if (!strncmp(header->config, "SKU#02", 6)) {
287 /*
288 * Industrial Motor Control (IDK)
289 * note: IDK console is on UART3 by default.
290 * So u-boot mus be build with CONFIG_SERIAL4 and
291 * CONFIG_CONS_INDEX=4
292 */
293 configure_module_pin_mux(mii1_pin_mux);
294 configure_module_pin_mux(mmc0_no_cd_pin_mux);
295 } else if (!strncmp(header->name, "A335X_SK", HDR_NAME_LEN)) {
296 /* Starter Kit EVM */
297 configure_module_pin_mux(i2c1_pin_mux);
298 configure_module_pin_mux(gpio0_7_pin_mux);
299 configure_module_pin_mux(rgmii1_pin_mux);
300 configure_module_pin_mux(mmc0_pin_mux_sk_evm);
301 } else if (!strncmp(header->name, "A335BNLT", HDR_NAME_LEN)) {
302 /* Beaglebone LT pinmux */
303 configure_module_pin_mux(i2c1_pin_mux);
304 configure_module_pin_mux(mii1_pin_mux);
305 configure_module_pin_mux(mmc0_pin_mux);
306 configure_module_pin_mux(mmc1_pin_mux);
307 } else {
308 puts("Unknown board, cannot configure pinmux.");
309 hang();
310 }
311 }