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git01.mediatek.com / filogic / uboot / 572dcdd774cf8498606257f38fca12639a82e74f / . / arch / arm / mach-tegra / tegra20 / funcmux.c
blob: 2ee0f6ea76f109590d9b02e412e1187af808b0c9 [file] [log] [blame]
Tom Rini10e47792018-05-06 17:58:06 -0400[diff] [blame]1// SPDX-License-Identifier: GPL-2.0+
Simon Glass84a97c52011-11-28 15:04:38 +0000[diff] [blame]2/*
3 * Copyright (c) 2011 The Chromium OS Authors.
Simon Glass84a97c52011-11-28 15:04:38 +0000[diff] [blame]4 */
5
Allen Martin55d98a12012-08-31 08:30:00 +0000[diff] [blame]6/* Tegra20 high-level function multiplexing */
Simon Glass84a97c52011-11-28 15:04:38 +0000[diff] [blame]7#include <common.h>
8#include <asm/arch/clock.h>
Simon Glass43b1a7c2012-01-11 12:42:23 +0000[diff] [blame]9#include <asm/arch/funcmux.h>
Simon Glass84a97c52011-11-28 15:04:38 +0000[diff] [blame]10#include <asm/arch/pinmux.h>
11
Simon Glass11ecb382012-10-17 13:24:46 +0000[diff] [blame]12/*
13 * The PINMUX macro is used to set up pinmux tables.
14 */
15#define PINMUX(grp, mux, pupd, tri) \
Stephen Warrenf27f4e82014-03-21 12:28:58 -0600[diff] [blame]16 {PMUX_PINGRP_##grp, PMUX_FUNC_##mux, PMUX_PULL_##pupd, PMUX_TRI_##tri}
Simon Glass11ecb382012-10-17 13:24:46 +0000[diff] [blame]17
Stephen Warrenf4df6052014-03-21 12:28:56 -0600[diff] [blame]18static const struct pmux_pingrp_config disp1_default[] = {
Simon Glass11ecb382012-10-17 13:24:46 +0000[diff] [blame]19 PINMUX(LDI, DISPA, NORMAL, NORMAL),
20 PINMUX(LHP0, DISPA, NORMAL, NORMAL),
21 PINMUX(LHP1, DISPA, NORMAL, NORMAL),
22 PINMUX(LHP2, DISPA, NORMAL, NORMAL),
23 PINMUX(LHS, DISPA, NORMAL, NORMAL),
24 PINMUX(LM0, RSVD4, NORMAL, NORMAL),
25 PINMUX(LPP, DISPA, NORMAL, NORMAL),
26 PINMUX(LPW0, DISPA, NORMAL, NORMAL),
27 PINMUX(LPW2, DISPA, NORMAL, NORMAL),
28 PINMUX(LSC0, DISPA, NORMAL, NORMAL),
29 PINMUX(LSPI, DISPA, NORMAL, NORMAL),
30 PINMUX(LVP1, DISPA, NORMAL, NORMAL),
31 PINMUX(LVS, DISPA, NORMAL, NORMAL),
32 PINMUX(SLXD, SPDIF, NORMAL, NORMAL),
33};
34
35
Simon Glass84a97c52011-11-28 15:04:38 +0000[diff] [blame]36int funcmux_select(enum periph_id id, int config)
37{
Simon Glass43b1a7c2012-01-11 12:42:23 +0000[diff] [blame]38 int bad_config = config != FUNCMUX_DEFAULT;
Simon Glass3ba99a32012-01-11 12:42:22 +0000[diff] [blame]39
Simon Glass84a97c52011-11-28 15:04:38 +0000[diff] [blame]40 switch (id) {
41 case PERIPH_ID_UART1:
Stephen Warren59f90102012-05-14 13:13:45 +0000[diff] [blame]42 switch (config) {
43 case FUNCMUX_UART1_IRRX_IRTX:
Stephen Warrenf27f4e82014-03-21 12:28:58 -0600[diff] [blame]44 pinmux_set_func(PMUX_PINGRP_IRRX, PMUX_FUNC_UARTA);
45 pinmux_set_func(PMUX_PINGRP_IRTX, PMUX_FUNC_UARTA);
46 pinmux_tristate_disable(PMUX_PINGRP_IRRX);
47 pinmux_tristate_disable(PMUX_PINGRP_IRTX);
Stephen Warren59f90102012-05-14 13:13:45 +0000[diff] [blame]48 break;
49 case FUNCMUX_UART1_UAA_UAB:
Stephen Warrenf27f4e82014-03-21 12:28:58 -0600[diff] [blame]50 pinmux_set_func(PMUX_PINGRP_UAA, PMUX_FUNC_UARTA);
51 pinmux_set_func(PMUX_PINGRP_UAB, PMUX_FUNC_UARTA);
52 pinmux_tristate_disable(PMUX_PINGRP_UAA);
53 pinmux_tristate_disable(PMUX_PINGRP_UAB);
Stephen Warren59f90102012-05-14 13:13:45 +0000[diff] [blame]54 bad_config = 0;
55 break;
Stephen Warrene4c01a82012-05-16 05:59:59 +0000[diff] [blame]56 case FUNCMUX_UART1_GPU:
Stephen Warrenf27f4e82014-03-21 12:28:58 -0600[diff] [blame]57 pinmux_set_func(PMUX_PINGRP_GPU, PMUX_FUNC_UARTA);
58 pinmux_tristate_disable(PMUX_PINGRP_GPU);
Stephen Warrene4c01a82012-05-16 05:59:59 +0000[diff] [blame]59 bad_config = 0;
60 break;
Lucas Stach4de6eec2012-05-16 08:21:02 +0000[diff] [blame]61 case FUNCMUX_UART1_SDIO1:
Stephen Warrenf27f4e82014-03-21 12:28:58 -0600[diff] [blame]62 pinmux_set_func(PMUX_PINGRP_SDIO1, PMUX_FUNC_UARTA);
63 pinmux_tristate_disable(PMUX_PINGRP_SDIO1);
Lucas Stach4de6eec2012-05-16 08:21:02 +0000[diff] [blame]64 bad_config = 0;
65 break;
Stephen Warren59f90102012-05-14 13:13:45 +0000[diff] [blame]66 }
67 if (!bad_config) {
Simon Glass3ba99a32012-01-11 12:42:22 +0000[diff] [blame]68 /*
69 * Tegra appears to boot with function UARTA pre-
70 * selected on mux group SDB. If two mux groups are
71 * both set to the same function, it's unclear which
72 * group's pins drive the RX signals into the HW.
73 * For UARTA, SDB certainly overrides group IRTX in
74 * practice. To solve this, configure some alternative
75 * function on SDB to avoid the conflict. Also, tri-
76 * state the group to avoid driving any signal onto it
77 * until we know what's connected.
78 */
Stephen Warrenf27f4e82014-03-21 12:28:58 -0600[diff] [blame]79 pinmux_tristate_enable(PMUX_PINGRP_SDB);
80 pinmux_set_func(PMUX_PINGRP_SDB, PMUX_FUNC_SDIO3);
Simon Glass3ba99a32012-01-11 12:42:22 +0000[diff] [blame]81 }
Simon Glass84a97c52011-11-28 15:04:38 +0000[diff] [blame]82 break;
83
84 case PERIPH_ID_UART2:
Stephen Warren811af732013-01-22 06:20:08 +0000[diff] [blame]85 if (config == FUNCMUX_UART2_UAD) {
Stephen Warrenf27f4e82014-03-21 12:28:58 -0600[diff] [blame]86 pinmux_set_func(PMUX_PINGRP_UAD, PMUX_FUNC_UARTB);
87 pinmux_tristate_disable(PMUX_PINGRP_UAD);
Simon Glass3ba99a32012-01-11 12:42:22 +0000[diff] [blame]88 }
Simon Glass84a97c52011-11-28 15:04:38 +0000[diff] [blame]89 break;
90
91 case PERIPH_ID_UART4:
Simon Glass43b1a7c2012-01-11 12:42:23 +0000[diff] [blame]92 if (config == FUNCMUX_UART4_GMC) {
Stephen Warrenf27f4e82014-03-21 12:28:58 -0600[diff] [blame]93 pinmux_set_func(PMUX_PINGRP_GMC, PMUX_FUNC_UARTD);
94 pinmux_tristate_disable(PMUX_PINGRP_GMC);
Simon Glass3ba99a32012-01-11 12:42:22 +0000[diff] [blame]95 }
Simon Glass84a97c52011-11-28 15:04:38 +0000[diff] [blame]96 break;
97
Simon Glassd8c03b82012-01-11 12:42:24 +0000[diff] [blame]98 case PERIPH_ID_DVC_I2C:
99 /* there is only one selection, pinmux_config is ignored */
100 if (config == FUNCMUX_DVC_I2CP) {
Stephen Warrenf27f4e82014-03-21 12:28:58 -0600[diff] [blame]101 pinmux_set_func(PMUX_PINGRP_I2CP, PMUX_FUNC_I2C);
102 pinmux_tristate_disable(PMUX_PINGRP_I2CP);
Simon Glassd8c03b82012-01-11 12:42:24 +0000[diff] [blame]103 }
104 break;
105
106 case PERIPH_ID_I2C1:
107 /* support pinmux_config of 0 for now, */
108 if (config == FUNCMUX_I2C1_RM) {
Stephen Warrenf27f4e82014-03-21 12:28:58 -0600[diff] [blame]109 pinmux_set_func(PMUX_PINGRP_RM, PMUX_FUNC_I2C);
110 pinmux_tristate_disable(PMUX_PINGRP_RM);
Simon Glassd8c03b82012-01-11 12:42:24 +0000[diff] [blame]111 }
112 break;
113 case PERIPH_ID_I2C2: /* I2C2 */
114 switch (config) {
115 case FUNCMUX_I2C2_DDC: /* DDC pin group, select I2C2 */
Stephen Warrenf27f4e82014-03-21 12:28:58 -0600[diff] [blame]116 pinmux_set_func(PMUX_PINGRP_DDC, PMUX_FUNC_I2C2);
Simon Glassd8c03b82012-01-11 12:42:24 +0000[diff] [blame]117 /* PTA to HDMI */
Stephen Warrenf27f4e82014-03-21 12:28:58 -0600[diff] [blame]118 pinmux_set_func(PMUX_PINGRP_PTA, PMUX_FUNC_HDMI);
119 pinmux_tristate_disable(PMUX_PINGRP_DDC);
Simon Glassd8c03b82012-01-11 12:42:24 +0000[diff] [blame]120 break;
121 case FUNCMUX_I2C2_PTA: /* PTA pin group, select I2C2 */
Stephen Warrenf27f4e82014-03-21 12:28:58 -0600[diff] [blame]122 pinmux_set_func(PMUX_PINGRP_PTA, PMUX_FUNC_I2C2);
Simon Glassd8c03b82012-01-11 12:42:24 +0000[diff] [blame]123 /* set DDC_SEL to RSVDx (RSVD2 works for now) */
Stephen Warrenf27f4e82014-03-21 12:28:58 -0600[diff] [blame]124 pinmux_set_func(PMUX_PINGRP_DDC, PMUX_FUNC_RSVD2);
125 pinmux_tristate_disable(PMUX_PINGRP_PTA);
Simon Glassd8c03b82012-01-11 12:42:24 +0000[diff] [blame]126 bad_config = 0;
127 break;
128 }
129 break;
130 case PERIPH_ID_I2C3: /* I2C3 */
131 /* support pinmux_config of 0 for now */
132 if (config == FUNCMUX_I2C3_DTF) {
Stephen Warrenf27f4e82014-03-21 12:28:58 -0600[diff] [blame]133 pinmux_set_func(PMUX_PINGRP_DTF, PMUX_FUNC_I2C3);
134 pinmux_tristate_disable(PMUX_PINGRP_DTF);
Simon Glassd8c03b82012-01-11 12:42:24 +0000[diff] [blame]135 }
136 break;
137
Stephen Warrenb6d19012012-05-16 13:54:06 +0000[diff] [blame]138 case PERIPH_ID_SDMMC1:
139 if (config == FUNCMUX_SDMMC1_SDIO1_4BIT) {
Stephen Warrenf27f4e82014-03-21 12:28:58 -0600[diff] [blame]140 pinmux_set_func(PMUX_PINGRP_SDIO1, PMUX_FUNC_SDIO1);
141 pinmux_tristate_disable(PMUX_PINGRP_SDIO1);
Stephen Warrenb6d19012012-05-16 13:54:06 +0000[diff] [blame]142 }
143 break;
144
Simon Glassfb1ea632012-01-11 12:42:25 +0000[diff] [blame]145 case PERIPH_ID_SDMMC2:
146 if (config == FUNCMUX_SDMMC2_DTA_DTD_8BIT) {
Stephen Warrenf27f4e82014-03-21 12:28:58 -0600[diff] [blame]147 pinmux_set_func(PMUX_PINGRP_DTA, PMUX_FUNC_SDIO2);
148 pinmux_set_func(PMUX_PINGRP_DTD, PMUX_FUNC_SDIO2);
Simon Glassfb1ea632012-01-11 12:42:25 +0000[diff] [blame]149
Stephen Warrenf27f4e82014-03-21 12:28:58 -0600[diff] [blame]150 pinmux_tristate_disable(PMUX_PINGRP_DTA);
151 pinmux_tristate_disable(PMUX_PINGRP_DTD);
Simon Glassfb1ea632012-01-11 12:42:25 +0000[diff] [blame]152 }
153 break;
154
155 case PERIPH_ID_SDMMC3:
156 switch (config) {
157 case FUNCMUX_SDMMC3_SDB_SLXA_8BIT:
Stephen Warrenf27f4e82014-03-21 12:28:58 -0600[diff] [blame]158 pinmux_set_func(PMUX_PINGRP_SLXA, PMUX_FUNC_SDIO3);
159 pinmux_set_func(PMUX_PINGRP_SLXC, PMUX_FUNC_SDIO3);
160 pinmux_set_func(PMUX_PINGRP_SLXD, PMUX_FUNC_SDIO3);
161 pinmux_set_func(PMUX_PINGRP_SLXK, PMUX_FUNC_SDIO3);
Simon Glassfb1ea632012-01-11 12:42:25 +0000[diff] [blame]162
Stephen Warrenf27f4e82014-03-21 12:28:58 -0600[diff] [blame]163 pinmux_tristate_disable(PMUX_PINGRP_SLXA);
164 pinmux_tristate_disable(PMUX_PINGRP_SLXC);
165 pinmux_tristate_disable(PMUX_PINGRP_SLXD);
166 pinmux_tristate_disable(PMUX_PINGRP_SLXK);
Simon Glassfb1ea632012-01-11 12:42:25 +0000[diff] [blame]167 /* fall through */
168
169 case FUNCMUX_SDMMC3_SDB_4BIT:
Stephen Warrenf27f4e82014-03-21 12:28:58 -0600[diff] [blame]170 pinmux_set_func(PMUX_PINGRP_SDB, PMUX_FUNC_SDIO3);
171 pinmux_set_func(PMUX_PINGRP_SDC, PMUX_FUNC_SDIO3);
172 pinmux_set_func(PMUX_PINGRP_SDD, PMUX_FUNC_SDIO3);
Simon Glassfb1ea632012-01-11 12:42:25 +0000[diff] [blame]173
Stephen Warrenf27f4e82014-03-21 12:28:58 -0600[diff] [blame]174 pinmux_tristate_disable(PMUX_PINGRP_SDB);
175 pinmux_tristate_disable(PMUX_PINGRP_SDC);
176 pinmux_tristate_disable(PMUX_PINGRP_SDD);
Simon Glassfb1ea632012-01-11 12:42:25 +0000[diff] [blame]177 bad_config = 0;
178 break;
179 }
180 break;
181
182 case PERIPH_ID_SDMMC4:
183 switch (config) {
184 case FUNCMUX_SDMMC4_ATC_ATD_8BIT:
Stephen Warrenf27f4e82014-03-21 12:28:58 -0600[diff] [blame]185 pinmux_set_func(PMUX_PINGRP_ATC, PMUX_FUNC_SDIO4);
186 pinmux_set_func(PMUX_PINGRP_ATD, PMUX_FUNC_SDIO4);
Simon Glassfb1ea632012-01-11 12:42:25 +0000[diff] [blame]187
Stephen Warrenf27f4e82014-03-21 12:28:58 -0600[diff] [blame]188 pinmux_tristate_disable(PMUX_PINGRP_ATC);
189 pinmux_tristate_disable(PMUX_PINGRP_ATD);
Simon Glassfb1ea632012-01-11 12:42:25 +0000[diff] [blame]190 break;
191
192 case FUNCMUX_SDMMC4_ATB_GMA_GME_8_BIT:
Stephen Warrenf27f4e82014-03-21 12:28:58 -0600[diff] [blame]193 pinmux_set_func(PMUX_PINGRP_GME, PMUX_FUNC_SDIO4);
194 pinmux_tristate_disable(PMUX_PINGRP_GME);
Simon Glassfb1ea632012-01-11 12:42:25 +0000[diff] [blame]195 /* fall through */
196
197 case FUNCMUX_SDMMC4_ATB_GMA_4_BIT:
Stephen Warrenf27f4e82014-03-21 12:28:58 -0600[diff] [blame]198 pinmux_set_func(PMUX_PINGRP_ATB, PMUX_FUNC_SDIO4);
199 pinmux_set_func(PMUX_PINGRP_GMA, PMUX_FUNC_SDIO4);
Simon Glassfb1ea632012-01-11 12:42:25 +0000[diff] [blame]200
Stephen Warrenf27f4e82014-03-21 12:28:58 -0600[diff] [blame]201 pinmux_tristate_disable(PMUX_PINGRP_ATB);
202 pinmux_tristate_disable(PMUX_PINGRP_GMA);
Simon Glassfb1ea632012-01-11 12:42:25 +0000[diff] [blame]203 bad_config = 0;
204 break;
205 }
206 break;
207
Simon Glass5dc04612012-04-17 09:01:32 +0000[diff] [blame]208 case PERIPH_ID_KBC:
209 if (config == FUNCMUX_DEFAULT) {
Stephen Warrenf27f4e82014-03-21 12:28:58 -0600[diff] [blame]210 enum pmux_pingrp grp[] = {PMUX_PINGRP_KBCA,
211 PMUX_PINGRP_KBCB, PMUX_PINGRP_KBCC,
212 PMUX_PINGRP_KBCD, PMUX_PINGRP_KBCE,
213 PMUX_PINGRP_KBCF};
Simon Glass5dc04612012-04-17 09:01:32 +0000[diff] [blame]214 int i;
215
216 for (i = 0; i < ARRAY_SIZE(grp); i++) {
217 pinmux_tristate_disable(grp[i]);
218 pinmux_set_func(grp[i], PMUX_FUNC_KBC);
219 pinmux_set_pullupdown(grp[i], PMUX_PULL_UP);
220 }
Lucas Stach53c79112012-05-31 01:51:01 +0000[diff] [blame]221 }
222 break;
223
224 case PERIPH_ID_USB2:
225 if (config == FUNCMUX_USB2_ULPI) {
Stephen Warrenf27f4e82014-03-21 12:28:58 -0600[diff] [blame]226 pinmux_set_func(PMUX_PINGRP_UAA, PMUX_FUNC_ULPI);
227 pinmux_set_func(PMUX_PINGRP_UAB, PMUX_FUNC_ULPI);
228 pinmux_set_func(PMUX_PINGRP_UDA, PMUX_FUNC_ULPI);
Simon Glass5dc04612012-04-17 09:01:32 +0000[diff] [blame]229
Stephen Warrenf27f4e82014-03-21 12:28:58 -0600[diff] [blame]230 pinmux_tristate_disable(PMUX_PINGRP_UAA);
231 pinmux_tristate_disable(PMUX_PINGRP_UAB);
232 pinmux_tristate_disable(PMUX_PINGRP_UDA);
Simon Glass5dc04612012-04-17 09:01:32 +0000[diff] [blame]233 }
Lucas Stach53c79112012-05-31 01:51:01 +0000[diff] [blame]234 break;
Simon Glass5dc04612012-04-17 09:01:32 +0000[diff] [blame]235
Stephen Warren1bdbc9f2012-06-12 08:33:39 +0000[diff] [blame]236 case PERIPH_ID_SPI1:
237 if (config == FUNCMUX_SPI1_GMC_GMD) {
Stephen Warrenf27f4e82014-03-21 12:28:58 -0600[diff] [blame]238 pinmux_set_func(PMUX_PINGRP_GMC, PMUX_FUNC_SFLASH);
239 pinmux_set_func(PMUX_PINGRP_GMD, PMUX_FUNC_SFLASH);
Stephen Warren1bdbc9f2012-06-12 08:33:39 +0000[diff] [blame]240
Stephen Warrenf27f4e82014-03-21 12:28:58 -0600[diff] [blame]241 pinmux_tristate_disable(PMUX_PINGRP_GMC);
242 pinmux_tristate_disable(PMUX_PINGRP_GMD);
Stephen Warren1bdbc9f2012-06-12 08:33:39 +0000[diff] [blame]243 }
244 break;
245
Simon Glassfdf54732012-07-29 20:53:26 +0000[diff] [blame]246 case PERIPH_ID_NDFLASH:
Lucas Stach93748d32012-09-27 13:04:27 +0000[diff] [blame]247 switch (config) {
248 case FUNCMUX_NDFLASH_ATC:
Stephen Warrenf27f4e82014-03-21 12:28:58 -0600[diff] [blame]249 pinmux_set_func(PMUX_PINGRP_ATC, PMUX_FUNC_NAND);
250 pinmux_tristate_disable(PMUX_PINGRP_ATC);
Lucas Stach93748d32012-09-27 13:04:27 +0000[diff] [blame]251 break;
252 case FUNCMUX_NDFLASH_KBC_8_BIT:
Stephen Warrenf27f4e82014-03-21 12:28:58 -0600[diff] [blame]253 pinmux_set_func(PMUX_PINGRP_KBCA, PMUX_FUNC_NAND);
Lucas Stachc9109a12015-03-27 01:31:44 +0100[diff] [blame]254 pinmux_set_func(PMUX_PINGRP_KBCB, PMUX_FUNC_NAND);
Stephen Warrenf27f4e82014-03-21 12:28:58 -0600[diff] [blame]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 Stach93748d32012-09-27 13:04:27 +0000[diff] [blame]259
Stephen Warrenf27f4e82014-03-21 12:28:58 -0600[diff] [blame]260 pinmux_tristate_disable(PMUX_PINGRP_KBCA);
Lucas Stachc9109a12015-03-27 01:31:44 +0100[diff] [blame]261 pinmux_tristate_disable(PMUX_PINGRP_KBCB);
Stephen Warrenf27f4e82014-03-21 12:28:58 -0600[diff] [blame]262 pinmux_tristate_disable(PMUX_PINGRP_KBCC);
263 pinmux_tristate_disable(PMUX_PINGRP_KBCD);
264 pinmux_tristate_disable(PMUX_PINGRP_KBCE);
265 pinmux_tristate_disable(PMUX_PINGRP_KBCF);
Lucas Stach93748d32012-09-27 13:04:27 +0000[diff] [blame]266
267 bad_config = 0;
268 break;
Simon Glassfdf54732012-07-29 20:53:26 +0000[diff] [blame]269 }
270 break;
Simon Glass11ecb382012-10-17 13:24:46 +0000[diff] [blame]271 case PERIPH_ID_DISP1:
272 if (config == FUNCMUX_DEFAULT) {
273 int i;
274
Stephen Warrenf27f4e82014-03-21 12:28:58 -0600[diff] [blame]275 for (i = PMUX_PINGRP_LD0; i <= PMUX_PINGRP_LD17; i++) {
Simon Glass11ecb382012-10-17 13:24:46 +0000[diff] [blame]276 pinmux_set_func(i, PMUX_FUNC_DISPA);
277 pinmux_tristate_disable(i);
278 pinmux_set_pullupdown(i, PMUX_PULL_NORMAL);
279 }
Stephen Warrenf4df6052014-03-21 12:28:56 -0600[diff] [blame]280 pinmux_config_pingrp_table(disp1_default,
281 ARRAY_SIZE(disp1_default));
Simon Glass11ecb382012-10-17 13:24:46 +0000[diff] [blame]282 }
283 break;
Simon Glassfdf54732012-07-29 20:53:26 +0000[diff] [blame]284
Simon Glass84a97c52011-11-28 15:04:38 +0000[diff] [blame]285 default:
286 debug("%s: invalid periph_id %d", __func__, id);
287 return -1;
288 }
289
Simon Glass3ba99a32012-01-11 12:42:22 +0000[diff] [blame]290 if (bad_config) {
291 debug("%s: invalid config %d for periph_id %d", __func__,
292 config, id);
293 return -1;
294 }
295
Simon Glass84a97c52011-11-28 15:04:38 +0000[diff] [blame]296 return 0;
297}