2 * include/linux/mmc/sd.h
4 * Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or (at
9 * your option) any later version.
15 /* SD commands type argument response */
17 /* This is basically the same command as for MMC with some quirks. */
18 #define SD_SEND_RELATIVE_ADDR 3 /* bcr R6 */
19 #define SD_SEND_IF_COND 8 /* bcr [11:0] See below R7 */
22 #define SD_SWITCH 6 /* adtc [31:0] See below R1 */
24 /* Application commands */
25 #define SD_APP_SET_BUS_WIDTH 6 /* ac [1:0] bus width R1 */
26 #define SD_APP_SEND_NUM_WR_BLKS 22 /* adtc R1 */
27 #define SD_APP_OP_COND 41 /* bcr [31:0] OCR R3 */
28 #define SD_APP_SEND_SCR 51 /* adtc R1 */
31 * SD_SWITCH argument format:
33 * [31] Check (0) or switch (1)
34 * [30:24] Reserved (0)
35 * [23:20] Function group 6
36 * [19:16] Function group 5
37 * [15:12] Function group 4
38 * [11:8] Function group 3
39 * [7:4] Function group 2
40 * [3:0] Function group 1
44 * SD_SEND_IF_COND argument format:
46 * [31:12] Reserved (0)
47 * [11:8] Host Voltage Supply Flags
48 * [7:0] Check Pattern (0xAA)
52 * SCR field definitions
55 #define SCR_SPEC_VER_0 0 /* Implements system specification 1.0 - 1.01 */
56 #define SCR_SPEC_VER_1 1 /* Implements system specification 1.10 */
57 #define SCR_SPEC_VER_2 2 /* Implements system specification 2.00 */
62 #define SD_BUS_WIDTH_1 0
63 #define SD_BUS_WIDTH_4 2
68 #define SD_SWITCH_CHECK 0
69 #define SD_SWITCH_SET 1
72 * SD_SWITCH function groups
74 #define SD_SWITCH_GRP_ACCESS 0
77 * SD_SWITCH access modes
79 #define SD_SWITCH_ACCESS_DEF 0
80 #define SD_SWITCH_ACCESS_HS 1