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gerrit.cesnet.cz / github / trini / u-boot / f8fff9dac9226792491e4106c13ebda985fe4e90 / . / arch / arm / cpu / tegra20-common / funcmux.c
blob: 0df4a0738de49d1bfc671bc3c312bde7cc06a68d [file] [log] [blame]
Simon Glassb5a5b352011-11-28 15:04:38 +0000[diff] [blame]1/*
2 * Copyright (c) 2011 The Chromium OS Authors.
Simon Glassb5a5b352011-11-28 15:04:38 +0000[diff] [blame]3 *
Wolfgang Denk1a459662013-07-08 09:37:19 +0200[diff] [blame]4 * SPDX-License-Identifier: GPL-2.0+
Simon Glassb5a5b352011-11-28 15:04:38 +0000[diff] [blame]5 */
6
Allen Martin00a27492012-08-31 08:30:00 +0000[diff] [blame]7/* Tegra20 high-level function multiplexing */
Simon Glassb5a5b352011-11-28 15:04:38 +0000[diff] [blame]8#include <common.h>
9#include <asm/arch/clock.h>
Simon Glass2faf1862012-01-11 12:42:23 +0000[diff] [blame]10#include <asm/arch/funcmux.h>
Simon Glassb5a5b352011-11-28 15:04:38 +0000[diff] [blame]11#include <asm/arch/pinmux.h>
12
Simon Glassb3444962012-10-17 13:24:46 +0000[diff] [blame]13/*
14 * The PINMUX macro is used to set up pinmux tables.
15 */
16#define PINMUX(grp, mux, pupd, tri) \
Stephen Warren70ad3752014-03-21 12:28:58 -0600[diff] [blame]17 {PMUX_PINGRP_##grp, PMUX_FUNC_##mux, PMUX_PULL_##pupd, PMUX_TRI_##tri}
Simon Glassb3444962012-10-17 13:24:46 +0000[diff] [blame]18
Stephen Warrendfb42fc2014-03-21 12:28:56 -0600[diff] [blame]19static const struct pmux_pingrp_config disp1_default[] = {
Simon Glassb3444962012-10-17 13:24:46 +0000[diff] [blame]20 PINMUX(LDI, DISPA, NORMAL, NORMAL),
21 PINMUX(LHP0, DISPA, NORMAL, NORMAL),
22 PINMUX(LHP1, DISPA, NORMAL, NORMAL),
23 PINMUX(LHP2, DISPA, NORMAL, NORMAL),
24 PINMUX(LHS, DISPA, NORMAL, NORMAL),
25 PINMUX(LM0, RSVD4, NORMAL, NORMAL),
26 PINMUX(LPP, DISPA, NORMAL, NORMAL),
27 PINMUX(LPW0, DISPA, NORMAL, NORMAL),
28 PINMUX(LPW2, DISPA, NORMAL, NORMAL),
29 PINMUX(LSC0, DISPA, NORMAL, NORMAL),
30 PINMUX(LSPI, DISPA, NORMAL, NORMAL),
31 PINMUX(LVP1, DISPA, NORMAL, NORMAL),
32 PINMUX(LVS, DISPA, NORMAL, NORMAL),
33 PINMUX(SLXD, SPDIF, NORMAL, NORMAL),
34};
35
36
Simon Glassb5a5b352011-11-28 15:04:38 +0000[diff] [blame]37int funcmux_select(enum periph_id id, int config)
38{
Simon Glass2faf1862012-01-11 12:42:23 +0000[diff] [blame]39 int bad_config = config != FUNCMUX_DEFAULT;
Simon Glassd6939692012-01-11 12:42:22 +0000[diff] [blame]40
Simon Glassb5a5b352011-11-28 15:04:38 +0000[diff] [blame]41 switch (id) {
42 case PERIPH_ID_UART1:
Stephen Warrenb9607e72012-05-14 13:13:45 +0000[diff] [blame]43 switch (config) {
44 case FUNCMUX_UART1_IRRX_IRTX:
Stephen Warren70ad3752014-03-21 12:28:58 -0600[diff] [blame]45 pinmux_set_func(PMUX_PINGRP_IRRX, PMUX_FUNC_UARTA);
46 pinmux_set_func(PMUX_PINGRP_IRTX, PMUX_FUNC_UARTA);
47 pinmux_tristate_disable(PMUX_PINGRP_IRRX);
48 pinmux_tristate_disable(PMUX_PINGRP_IRTX);
Stephen Warrenb9607e72012-05-14 13:13:45 +0000[diff] [blame]49 break;
50 case FUNCMUX_UART1_UAA_UAB:
Stephen Warren70ad3752014-03-21 12:28:58 -0600[diff] [blame]51 pinmux_set_func(PMUX_PINGRP_UAA, PMUX_FUNC_UARTA);
52 pinmux_set_func(PMUX_PINGRP_UAB, PMUX_FUNC_UARTA);
53 pinmux_tristate_disable(PMUX_PINGRP_UAA);
54 pinmux_tristate_disable(PMUX_PINGRP_UAB);
Stephen Warrenb9607e72012-05-14 13:13:45 +0000[diff] [blame]55 bad_config = 0;
56 break;
Stephen Warrene21649b2012-05-16 05:59:59 +0000[diff] [blame]57 case FUNCMUX_UART1_GPU:
Stephen Warren70ad3752014-03-21 12:28:58 -0600[diff] [blame]58 pinmux_set_func(PMUX_PINGRP_GPU, PMUX_FUNC_UARTA);
59 pinmux_tristate_disable(PMUX_PINGRP_GPU);
Stephen Warrene21649b2012-05-16 05:59:59 +0000[diff] [blame]60 bad_config = 0;
61 break;
Lucas Stacha2cfe632012-05-16 08:21:02 +0000[diff] [blame]62 case FUNCMUX_UART1_SDIO1:
Stephen Warren70ad3752014-03-21 12:28:58 -0600[diff] [blame]63 pinmux_set_func(PMUX_PINGRP_SDIO1, PMUX_FUNC_UARTA);
64 pinmux_tristate_disable(PMUX_PINGRP_SDIO1);
Lucas Stacha2cfe632012-05-16 08:21:02 +0000[diff] [blame]65 bad_config = 0;
66 break;
Stephen Warrenb9607e72012-05-14 13:13:45 +0000[diff] [blame]67 }
68 if (!bad_config) {
Simon Glassd6939692012-01-11 12:42:22 +0000[diff] [blame]69 /*
70 * Tegra appears to boot with function UARTA pre-
71 * selected on mux group SDB. If two mux groups are
72 * both set to the same function, it's unclear which
73 * group's pins drive the RX signals into the HW.
74 * For UARTA, SDB certainly overrides group IRTX in
75 * practice. To solve this, configure some alternative
76 * function on SDB to avoid the conflict. Also, tri-
77 * state the group to avoid driving any signal onto it
78 * until we know what's connected.
79 */
Stephen Warren70ad3752014-03-21 12:28:58 -0600[diff] [blame]80 pinmux_tristate_enable(PMUX_PINGRP_SDB);
81 pinmux_set_func(PMUX_PINGRP_SDB, PMUX_FUNC_SDIO3);
Simon Glassd6939692012-01-11 12:42:22 +0000[diff] [blame]82 }
Simon Glassb5a5b352011-11-28 15:04:38 +0000[diff] [blame]83 break;
84
85 case PERIPH_ID_UART2:
Stephen Warren4727a132013-01-22 06:20:08 +0000[diff] [blame]86 if (config == FUNCMUX_UART2_UAD) {
Stephen Warren70ad3752014-03-21 12:28:58 -0600[diff] [blame]87 pinmux_set_func(PMUX_PINGRP_UAD, PMUX_FUNC_UARTB);
88 pinmux_tristate_disable(PMUX_PINGRP_UAD);
Simon Glassd6939692012-01-11 12:42:22 +0000[diff] [blame]89 }
Simon Glassb5a5b352011-11-28 15:04:38 +0000[diff] [blame]90 break;
91
92 case PERIPH_ID_UART4:
Simon Glass2faf1862012-01-11 12:42:23 +0000[diff] [blame]93 if (config == FUNCMUX_UART4_GMC) {
Stephen Warren70ad3752014-03-21 12:28:58 -0600[diff] [blame]94 pinmux_set_func(PMUX_PINGRP_GMC, PMUX_FUNC_UARTD);
95 pinmux_tristate_disable(PMUX_PINGRP_GMC);
Simon Glassd6939692012-01-11 12:42:22 +0000[diff] [blame]96 }
Simon Glassb5a5b352011-11-28 15:04:38 +0000[diff] [blame]97 break;
98
Simon Glass8a1133c2012-01-11 12:42:24 +0000[diff] [blame]99 case PERIPH_ID_DVC_I2C:
100 /* there is only one selection, pinmux_config is ignored */
101 if (config == FUNCMUX_DVC_I2CP) {
Stephen Warren70ad3752014-03-21 12:28:58 -0600[diff] [blame]102 pinmux_set_func(PMUX_PINGRP_I2CP, PMUX_FUNC_I2C);
103 pinmux_tristate_disable(PMUX_PINGRP_I2CP);
Simon Glass8a1133c2012-01-11 12:42:24 +0000[diff] [blame]104 }
105 break;
106
107 case PERIPH_ID_I2C1:
108 /* support pinmux_config of 0 for now, */
109 if (config == FUNCMUX_I2C1_RM) {
Stephen Warren70ad3752014-03-21 12:28:58 -0600[diff] [blame]110 pinmux_set_func(PMUX_PINGRP_RM, PMUX_FUNC_I2C);
111 pinmux_tristate_disable(PMUX_PINGRP_RM);
Simon Glass8a1133c2012-01-11 12:42:24 +0000[diff] [blame]112 }
113 break;
114 case PERIPH_ID_I2C2: /* I2C2 */
115 switch (config) {
116 case FUNCMUX_I2C2_DDC: /* DDC pin group, select I2C2 */
Stephen Warren70ad3752014-03-21 12:28:58 -0600[diff] [blame]117 pinmux_set_func(PMUX_PINGRP_DDC, PMUX_FUNC_I2C2);
Simon Glass8a1133c2012-01-11 12:42:24 +0000[diff] [blame]118 /* PTA to HDMI */
Stephen Warren70ad3752014-03-21 12:28:58 -0600[diff] [blame]119 pinmux_set_func(PMUX_PINGRP_PTA, PMUX_FUNC_HDMI);
120 pinmux_tristate_disable(PMUX_PINGRP_DDC);
Simon Glass8a1133c2012-01-11 12:42:24 +0000[diff] [blame]121 break;
122 case FUNCMUX_I2C2_PTA: /* PTA pin group, select I2C2 */
Stephen Warren70ad3752014-03-21 12:28:58 -0600[diff] [blame]123 pinmux_set_func(PMUX_PINGRP_PTA, PMUX_FUNC_I2C2);
Simon Glass8a1133c2012-01-11 12:42:24 +0000[diff] [blame]124 /* set DDC_SEL to RSVDx (RSVD2 works for now) */
Stephen Warren70ad3752014-03-21 12:28:58 -0600[diff] [blame]125 pinmux_set_func(PMUX_PINGRP_DDC, PMUX_FUNC_RSVD2);
126 pinmux_tristate_disable(PMUX_PINGRP_PTA);
Simon Glass8a1133c2012-01-11 12:42:24 +0000[diff] [blame]127 bad_config = 0;
128 break;
129 }
130 break;
131 case PERIPH_ID_I2C3: /* I2C3 */
132 /* support pinmux_config of 0 for now */
133 if (config == FUNCMUX_I2C3_DTF) {
Stephen Warren70ad3752014-03-21 12:28:58 -0600[diff] [blame]134 pinmux_set_func(PMUX_PINGRP_DTF, PMUX_FUNC_I2C3);
135 pinmux_tristate_disable(PMUX_PINGRP_DTF);
Simon Glass8a1133c2012-01-11 12:42:24 +0000[diff] [blame]136 }
137 break;
138
Stephen Warrend1e46072012-05-16 13:54:06 +0000[diff] [blame]139 case PERIPH_ID_SDMMC1:
140 if (config == FUNCMUX_SDMMC1_SDIO1_4BIT) {
Stephen Warren70ad3752014-03-21 12:28:58 -0600[diff] [blame]141 pinmux_set_func(PMUX_PINGRP_SDIO1, PMUX_FUNC_SDIO1);
142 pinmux_tristate_disable(PMUX_PINGRP_SDIO1);
Stephen Warrend1e46072012-05-16 13:54:06 +0000[diff] [blame]143 }
144 break;
145
Simon Glasscf06b132012-01-11 12:42:25 +0000[diff] [blame]146 case PERIPH_ID_SDMMC2:
147 if (config == FUNCMUX_SDMMC2_DTA_DTD_8BIT) {
Stephen Warren70ad3752014-03-21 12:28:58 -0600[diff] [blame]148 pinmux_set_func(PMUX_PINGRP_DTA, PMUX_FUNC_SDIO2);
149 pinmux_set_func(PMUX_PINGRP_DTD, PMUX_FUNC_SDIO2);
Simon Glasscf06b132012-01-11 12:42:25 +0000[diff] [blame]150
Stephen Warren70ad3752014-03-21 12:28:58 -0600[diff] [blame]151 pinmux_tristate_disable(PMUX_PINGRP_DTA);
152 pinmux_tristate_disable(PMUX_PINGRP_DTD);
Simon Glasscf06b132012-01-11 12:42:25 +0000[diff] [blame]153 }
154 break;
155
156 case PERIPH_ID_SDMMC3:
157 switch (config) {
158 case FUNCMUX_SDMMC3_SDB_SLXA_8BIT:
Stephen Warren70ad3752014-03-21 12:28:58 -0600[diff] [blame]159 pinmux_set_func(PMUX_PINGRP_SLXA, PMUX_FUNC_SDIO3);
160 pinmux_set_func(PMUX_PINGRP_SLXC, PMUX_FUNC_SDIO3);
161 pinmux_set_func(PMUX_PINGRP_SLXD, PMUX_FUNC_SDIO3);
162 pinmux_set_func(PMUX_PINGRP_SLXK, PMUX_FUNC_SDIO3);
Simon Glasscf06b132012-01-11 12:42:25 +0000[diff] [blame]163
Stephen Warren70ad3752014-03-21 12:28:58 -0600[diff] [blame]164 pinmux_tristate_disable(PMUX_PINGRP_SLXA);
165 pinmux_tristate_disable(PMUX_PINGRP_SLXC);
166 pinmux_tristate_disable(PMUX_PINGRP_SLXD);
167 pinmux_tristate_disable(PMUX_PINGRP_SLXK);
Simon Glasscf06b132012-01-11 12:42:25 +0000[diff] [blame]168 /* fall through */
169
170 case FUNCMUX_SDMMC3_SDB_4BIT:
Stephen Warren70ad3752014-03-21 12:28:58 -0600[diff] [blame]171 pinmux_set_func(PMUX_PINGRP_SDB, PMUX_FUNC_SDIO3);
172 pinmux_set_func(PMUX_PINGRP_SDC, PMUX_FUNC_SDIO3);
173 pinmux_set_func(PMUX_PINGRP_SDD, PMUX_FUNC_SDIO3);
Simon Glasscf06b132012-01-11 12:42:25 +0000[diff] [blame]174
Stephen Warren70ad3752014-03-21 12:28:58 -0600[diff] [blame]175 pinmux_tristate_disable(PMUX_PINGRP_SDB);
176 pinmux_tristate_disable(PMUX_PINGRP_SDC);
177 pinmux_tristate_disable(PMUX_PINGRP_SDD);
Simon Glasscf06b132012-01-11 12:42:25 +0000[diff] [blame]178 bad_config = 0;
179 break;
180 }
181 break;
182
183 case PERIPH_ID_SDMMC4:
184 switch (config) {
185 case FUNCMUX_SDMMC4_ATC_ATD_8BIT:
Stephen Warren70ad3752014-03-21 12:28:58 -0600[diff] [blame]186 pinmux_set_func(PMUX_PINGRP_ATC, PMUX_FUNC_SDIO4);
187 pinmux_set_func(PMUX_PINGRP_ATD, PMUX_FUNC_SDIO4);
Simon Glasscf06b132012-01-11 12:42:25 +0000[diff] [blame]188
Stephen Warren70ad3752014-03-21 12:28:58 -0600[diff] [blame]189 pinmux_tristate_disable(PMUX_PINGRP_ATC);
190 pinmux_tristate_disable(PMUX_PINGRP_ATD);
Simon Glasscf06b132012-01-11 12:42:25 +0000[diff] [blame]191 break;
192
193 case FUNCMUX_SDMMC4_ATB_GMA_GME_8_BIT:
Stephen Warren70ad3752014-03-21 12:28:58 -0600[diff] [blame]194 pinmux_set_func(PMUX_PINGRP_GME, PMUX_FUNC_SDIO4);
195 pinmux_tristate_disable(PMUX_PINGRP_GME);
Simon Glasscf06b132012-01-11 12:42:25 +0000[diff] [blame]196 /* fall through */
197
198 case FUNCMUX_SDMMC4_ATB_GMA_4_BIT:
Stephen Warren70ad3752014-03-21 12:28:58 -0600[diff] [blame]199 pinmux_set_func(PMUX_PINGRP_ATB, PMUX_FUNC_SDIO4);
200 pinmux_set_func(PMUX_PINGRP_GMA, PMUX_FUNC_SDIO4);
Simon Glasscf06b132012-01-11 12:42:25 +0000[diff] [blame]201
Stephen Warren70ad3752014-03-21 12:28:58 -0600[diff] [blame]202 pinmux_tristate_disable(PMUX_PINGRP_ATB);
203 pinmux_tristate_disable(PMUX_PINGRP_GMA);
Simon Glasscf06b132012-01-11 12:42:25 +0000[diff] [blame]204 bad_config = 0;
205 break;
206 }
207 break;
208
Simon Glass7e91f402012-04-17 09:01:32 +0000[diff] [blame]209 case PERIPH_ID_KBC:
210 if (config == FUNCMUX_DEFAULT) {
Stephen Warren70ad3752014-03-21 12:28:58 -0600[diff] [blame]211 enum pmux_pingrp grp[] = {PMUX_PINGRP_KBCA,
212 PMUX_PINGRP_KBCB, PMUX_PINGRP_KBCC,
213 PMUX_PINGRP_KBCD, PMUX_PINGRP_KBCE,
214 PMUX_PINGRP_KBCF};
Simon Glass7e91f402012-04-17 09:01:32 +0000[diff] [blame]215 int i;
216
217 for (i = 0; i < ARRAY_SIZE(grp); i++) {
218 pinmux_tristate_disable(grp[i]);
219 pinmux_set_func(grp[i], PMUX_FUNC_KBC);
220 pinmux_set_pullupdown(grp[i], PMUX_PULL_UP);
221 }
Simon Glass7e91f402012-04-17 09:01:32 +0000[diff] [blame]222 }
Lucas Stachf97daaa2012-05-31 01:51:01 +0000[diff] [blame]223 break;
224
225 case PERIPH_ID_USB2:
226 if (config == FUNCMUX_USB2_ULPI) {
Stephen Warren70ad3752014-03-21 12:28:58 -0600[diff] [blame]227 pinmux_set_func(PMUX_PINGRP_UAA, PMUX_FUNC_ULPI);
228 pinmux_set_func(PMUX_PINGRP_UAB, PMUX_FUNC_ULPI);
229 pinmux_set_func(PMUX_PINGRP_UDA, PMUX_FUNC_ULPI);
Lucas Stachf97daaa2012-05-31 01:51:01 +0000[diff] [blame]230
Stephen Warren70ad3752014-03-21 12:28:58 -0600[diff] [blame]231 pinmux_tristate_disable(PMUX_PINGRP_UAA);
232 pinmux_tristate_disable(PMUX_PINGRP_UAB);
233 pinmux_tristate_disable(PMUX_PINGRP_UDA);
Lucas Stachf97daaa2012-05-31 01:51:01 +0000[diff] [blame]234 }
235 break;
Simon Glass7e91f402012-04-17 09:01:32 +0000[diff] [blame]236
Stephen Warrena016e142012-06-12 08:33:39 +0000[diff] [blame]237 case PERIPH_ID_SPI1:
238 if (config == FUNCMUX_SPI1_GMC_GMD) {
Stephen Warren70ad3752014-03-21 12:28:58 -0600[diff] [blame]239 pinmux_set_func(PMUX_PINGRP_GMC, PMUX_FUNC_SFLASH);
240 pinmux_set_func(PMUX_PINGRP_GMD, PMUX_FUNC_SFLASH);
Stephen Warrena016e142012-06-12 08:33:39 +0000[diff] [blame]241
Stephen Warren70ad3752014-03-21 12:28:58 -0600[diff] [blame]242 pinmux_tristate_disable(PMUX_PINGRP_GMC);
243 pinmux_tristate_disable(PMUX_PINGRP_GMD);
Stephen Warrena016e142012-06-12 08:33:39 +0000[diff] [blame]244 }
245 break;
246
Simon Glass35e11322012-07-29 20:53:26 +0000[diff] [blame]247 case PERIPH_ID_NDFLASH:
Lucas Stachac56d952012-09-27 13:04:27 +0000[diff] [blame]248 switch (config) {
249 case FUNCMUX_NDFLASH_ATC:
Stephen Warren70ad3752014-03-21 12:28:58 -0600[diff] [blame]250 pinmux_set_func(PMUX_PINGRP_ATC, PMUX_FUNC_NAND);
251 pinmux_tristate_disable(PMUX_PINGRP_ATC);
Lucas Stachac56d952012-09-27 13:04:27 +0000[diff] [blame]252 break;
253 case FUNCMUX_NDFLASH_KBC_8_BIT:
Stephen Warren70ad3752014-03-21 12:28:58 -0600[diff] [blame]254 pinmux_set_func(PMUX_PINGRP_KBCA, PMUX_FUNC_NAND);
255 pinmux_set_func(PMUX_PINGRP_KBCC, PMUX_FUNC_NAND);
256 pinmux_set_func(PMUX_PINGRP_KBCD, PMUX_FUNC_NAND);
257 pinmux_set_func(PMUX_PINGRP_KBCE, PMUX_FUNC_NAND);
258 pinmux_set_func(PMUX_PINGRP_KBCF, PMUX_FUNC_NAND);
Lucas Stachac56d952012-09-27 13:04:27 +0000[diff] [blame]259
Stephen Warren70ad3752014-03-21 12:28:58 -0600[diff] [blame]260 pinmux_tristate_disable(PMUX_PINGRP_KBCA);
261 pinmux_tristate_disable(PMUX_PINGRP_KBCC);
262 pinmux_tristate_disable(PMUX_PINGRP_KBCD);
263 pinmux_tristate_disable(PMUX_PINGRP_KBCE);
264 pinmux_tristate_disable(PMUX_PINGRP_KBCF);
Lucas Stachac56d952012-09-27 13:04:27 +0000[diff] [blame]265
266 bad_config = 0;
267 break;
Simon Glass35e11322012-07-29 20:53:26 +0000[diff] [blame]268 }
269 break;
Simon Glassb3444962012-10-17 13:24:46 +0000[diff] [blame]270 case PERIPH_ID_DISP1:
271 if (config == FUNCMUX_DEFAULT) {
272 int i;
273
Stephen Warren70ad3752014-03-21 12:28:58 -0600[diff] [blame]274 for (i = PMUX_PINGRP_LD0; i <= PMUX_PINGRP_LD17; i++) {
Simon Glassb3444962012-10-17 13:24:46 +0000[diff] [blame]275 pinmux_set_func(i, PMUX_FUNC_DISPA);
276 pinmux_tristate_disable(i);
277 pinmux_set_pullupdown(i, PMUX_PULL_NORMAL);
278 }
Stephen Warrendfb42fc2014-03-21 12:28:56 -0600[diff] [blame]279 pinmux_config_pingrp_table(disp1_default,
280 ARRAY_SIZE(disp1_default));
Simon Glassb3444962012-10-17 13:24:46 +0000[diff] [blame]281 }
282 break;
Simon Glass35e11322012-07-29 20:53:26 +0000[diff] [blame]283
Simon Glassb5a5b352011-11-28 15:04:38 +0000[diff] [blame]284 default:
285 debug("%s: invalid periph_id %d", __func__, id);
286 return -1;
287 }
288
Simon Glassd6939692012-01-11 12:42:22 +0000[diff] [blame]289 if (bad_config) {
290 debug("%s: invalid config %d for periph_id %d", __func__,
291 config, id);
292 return -1;
293 }
294
Simon Glassb5a5b352011-11-28 15:04:38 +0000[diff] [blame]295 return 0;
296}