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mmc: split fsl_esdhc driver for i.MX
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1/* SPDX-License-Identifier: GPL-2.0+ */
2/*
3 * FSL SD/MMC Defines
4 *-------------------------------------------------------------------
5 *
6 * Copyright 2019 NXP
7 * Yangbo Lu <[email protected]>
8 *
9 * Copyright 2007-2008,2010-2011 Freescale Semiconductor, Inc
10 */
11
12#ifndef __FSL_ESDHC_IMX_H__
13#define __FSL_ESDHC_IMX_H__
14
15#include <linux/bitops.h>
16#include <linux/errno.h>
17#include <asm/byteorder.h>
18
19/* needed for the mmc_cfg definition */
20#include <mmc.h>
21
22#ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT
23#include "../board/freescale/common/qixis.h"
24#endif
25
26/* FSL eSDHC-specific constants */
27#define SYSCTL 0x0002e02c
28#define SYSCTL_INITA 0x08000000
29#define SYSCTL_TIMEOUT_MASK 0x000f0000
30#define SYSCTL_CLOCK_MASK 0x0000fff0
31#if !defined(CONFIG_FSL_USDHC)
32#define SYSCTL_CKEN 0x00000008
33#define SYSCTL_PEREN 0x00000004
34#define SYSCTL_HCKEN 0x00000002
35#define SYSCTL_IPGEN 0x00000001
36#endif
37#define SYSCTL_RSTA 0x01000000
38#define SYSCTL_RSTC 0x02000000
39#define SYSCTL_RSTD 0x04000000
40
41#define VENDORSPEC_CKEN 0x00004000
42#define VENDORSPEC_PEREN 0x00002000
43#define VENDORSPEC_HCKEN 0x00001000
44#define VENDORSPEC_IPGEN 0x00000800
45#define VENDORSPEC_INIT 0x20007809
46
47#define IRQSTAT 0x0002e030
48#define IRQSTAT_DMAE (0x10000000)
49#define IRQSTAT_AC12E (0x01000000)
50#define IRQSTAT_DEBE (0x00400000)
51#define IRQSTAT_DCE (0x00200000)
52#define IRQSTAT_DTOE (0x00100000)
53#define IRQSTAT_CIE (0x00080000)
54#define IRQSTAT_CEBE (0x00040000)
55#define IRQSTAT_CCE (0x00020000)
56#define IRQSTAT_CTOE (0x00010000)
57#define IRQSTAT_CINT (0x00000100)
58#define IRQSTAT_CRM (0x00000080)
59#define IRQSTAT_CINS (0x00000040)
60#define IRQSTAT_BRR (0x00000020)
61#define IRQSTAT_BWR (0x00000010)
62#define IRQSTAT_DINT (0x00000008)
63#define IRQSTAT_BGE (0x00000004)
64#define IRQSTAT_TC (0x00000002)
65#define IRQSTAT_CC (0x00000001)
66
67#define CMD_ERR (IRQSTAT_CIE | IRQSTAT_CEBE | IRQSTAT_CCE)
68#define DATA_ERR (IRQSTAT_DEBE | IRQSTAT_DCE | IRQSTAT_DTOE | \
69 IRQSTAT_DMAE)
70#define DATA_COMPLETE (IRQSTAT_TC | IRQSTAT_DINT)
71
72#define IRQSTATEN 0x0002e034
73#define IRQSTATEN_DMAE (0x10000000)
74#define IRQSTATEN_AC12E (0x01000000)
75#define IRQSTATEN_DEBE (0x00400000)
76#define IRQSTATEN_DCE (0x00200000)
77#define IRQSTATEN_DTOE (0x00100000)
78#define IRQSTATEN_CIE (0x00080000)
79#define IRQSTATEN_CEBE (0x00040000)
80#define IRQSTATEN_CCE (0x00020000)
81#define IRQSTATEN_CTOE (0x00010000)
82#define IRQSTATEN_CINT (0x00000100)
83#define IRQSTATEN_CRM (0x00000080)
84#define IRQSTATEN_CINS (0x00000040)
85#define IRQSTATEN_BRR (0x00000020)
86#define IRQSTATEN_BWR (0x00000010)
87#define IRQSTATEN_DINT (0x00000008)
88#define IRQSTATEN_BGE (0x00000004)
89#define IRQSTATEN_TC (0x00000002)
90#define IRQSTATEN_CC (0x00000001)
91
92#define ESDHCCTL 0x0002e40c
93#define ESDHCCTL_PCS (0x00080000)
94
95#define PRSSTAT 0x0002e024
96#define PRSSTAT_DAT0 (0x01000000)
97#define PRSSTAT_CLSL (0x00800000)
98#define PRSSTAT_WPSPL (0x00080000)
99#define PRSSTAT_CDPL (0x00040000)
100#define PRSSTAT_CINS (0x00010000)
101#define PRSSTAT_BREN (0x00000800)
102#define PRSSTAT_BWEN (0x00000400)
103#define PRSSTAT_SDSTB (0X00000008)
104#define PRSSTAT_DLA (0x00000004)
105#define PRSSTAT_CICHB (0x00000002)
106#define PRSSTAT_CIDHB (0x00000001)
107
108#define PROCTL 0x0002e028
109#define PROCTL_INIT 0x00000020
110#define PROCTL_DTW_4 0x00000002
111#define PROCTL_DTW_8 0x00000004
112#define PROCTL_D3CD 0x00000008
113
114#define CMDARG 0x0002e008
115
116#define XFERTYP 0x0002e00c
117#define XFERTYP_CMD(x) ((x & 0x3f) << 24)
118#define XFERTYP_CMDTYP_NORMAL 0x0
119#define XFERTYP_CMDTYP_SUSPEND 0x00400000
120#define XFERTYP_CMDTYP_RESUME 0x00800000
121#define XFERTYP_CMDTYP_ABORT 0x00c00000
122#define XFERTYP_DPSEL 0x00200000
123#define XFERTYP_CICEN 0x00100000
124#define XFERTYP_CCCEN 0x00080000
125#define XFERTYP_RSPTYP_NONE 0
126#define XFERTYP_RSPTYP_136 0x00010000
127#define XFERTYP_RSPTYP_48 0x00020000
128#define XFERTYP_RSPTYP_48_BUSY 0x00030000
129#define XFERTYP_MSBSEL 0x00000020
130#define XFERTYP_DTDSEL 0x00000010
131#define XFERTYP_DDREN 0x00000008
132#define XFERTYP_AC12EN 0x00000004
133#define XFERTYP_BCEN 0x00000002
134#define XFERTYP_DMAEN 0x00000001
135
136#define CINS_TIMEOUT 1000
137#define PIO_TIMEOUT 500
138
139#define DSADDR 0x2e004
140
141#define CMDRSP0 0x2e010
142#define CMDRSP1 0x2e014
143#define CMDRSP2 0x2e018
144#define CMDRSP3 0x2e01c
145
146#define DATPORT 0x2e020
147
148#define WML 0x2e044
149#define WML_WRITE 0x00010000
150#ifdef CONFIG_FSL_SDHC_V2_3
151#define WML_RD_WML_MAX 0x80
152#define WML_WR_WML_MAX 0x80
153#define WML_RD_WML_MAX_VAL 0x0
154#define WML_WR_WML_MAX_VAL 0x0
155#define WML_RD_WML_MASK 0x7f
156#define WML_WR_WML_MASK 0x7f0000
157#else
158#define WML_RD_WML_MAX 0x10
159#define WML_WR_WML_MAX 0x80
160#define WML_RD_WML_MAX_VAL 0x10
161#define WML_WR_WML_MAX_VAL 0x80
162#define WML_RD_WML_MASK 0xff
163#define WML_WR_WML_MASK 0xff0000
164#endif
165
166#define BLKATTR 0x2e004
167#define BLKATTR_CNT(x) ((x & 0xffff) << 16)
168#define BLKATTR_SIZE(x) (x & 0x1fff)
169#define MAX_BLK_CNT 0x7fff /* so malloc will have enough room with 32M */
170
171#define ESDHC_HOSTCAPBLT_VS18 0x04000000
172#define ESDHC_HOSTCAPBLT_VS30 0x02000000
173#define ESDHC_HOSTCAPBLT_VS33 0x01000000
174#define ESDHC_HOSTCAPBLT_SRS 0x00800000
175#define ESDHC_HOSTCAPBLT_DMAS 0x00400000
176#define ESDHC_HOSTCAPBLT_HSS 0x00200000
177
178#define ESDHC_VENDORSPEC_VSELECT 0x00000002 /* Use 1.8V */
179
180/* Imported from Linux Kernel drivers/mmc/host/sdhci-esdhc-imx.c */
181#define MIX_CTRL_DDREN BIT(3)
182#define MIX_CTRL_DTDSEL_READ BIT(4)
183#define MIX_CTRL_AC23EN BIT(7)
184#define MIX_CTRL_EXE_TUNE BIT(22)
185#define MIX_CTRL_SMPCLK_SEL BIT(23)
186#define MIX_CTRL_AUTO_TUNE_EN BIT(24)
187#define MIX_CTRL_FBCLK_SEL BIT(25)
188#define MIX_CTRL_HS400_EN BIT(26)
189#define MIX_CTRL_HS400_ES BIT(27)
190/* Bits 3 and 6 are not SDHCI standard definitions */
191#define MIX_CTRL_SDHCI_MASK 0xb7
192/* Tuning bits */
193#define MIX_CTRL_TUNING_MASK 0x03c00000
194
195/* strobe dll register */
196#define ESDHC_STROBE_DLL_CTRL 0x70
197#define ESDHC_STROBE_DLL_CTRL_ENABLE BIT(0)
198#define ESDHC_STROBE_DLL_CTRL_RESET BIT(1)
199#define ESDHC_STROBE_DLL_CTRL_SLV_DLY_TARGET_DEFAULT 0x7
200#define ESDHC_STROBE_DLL_CTRL_SLV_DLY_TARGET_SHIFT 3
201
202#define ESDHC_STROBE_DLL_STATUS 0x74
203#define ESDHC_STROBE_DLL_STS_REF_LOCK BIT(1)
204#define ESDHC_STROBE_DLL_STS_SLV_LOCK 0x1
205#define ESDHC_STROBE_DLL_CLK_FREQ 100000000
206
207#define ESDHC_STD_TUNING_EN BIT(24)
208/* NOTE: the minimum valid tuning start tap for mx6sl is 1 */
209#define ESDHC_TUNING_START_TAP_DEFAULT 0x1
210#define ESDHC_TUNING_START_TAP_MASK 0xff
211#define ESDHC_TUNING_STEP_MASK 0x00070000
212#define ESDHC_TUNING_STEP_SHIFT 16
213
214#define ESDHC_FLAG_MULTIBLK_NO_INT BIT(1)
215#define ESDHC_FLAG_ENGCM07207 BIT(2)
216#define ESDHC_FLAG_USDHC BIT(3)
217#define ESDHC_FLAG_MAN_TUNING BIT(4)
218#define ESDHC_FLAG_STD_TUNING BIT(5)
219#define ESDHC_FLAG_HAVE_CAP1 BIT(6)
220#define ESDHC_FLAG_ERR004536 BIT(7)
221#define ESDHC_FLAG_HS200 BIT(8)
222#define ESDHC_FLAG_HS400 BIT(9)
223#define ESDHC_FLAG_ERR010450 BIT(10)
224#define ESDHC_FLAG_HS400_ES BIT(11)
225
226struct fsl_esdhc_cfg {
227 phys_addr_t esdhc_base;
228 u32 sdhc_clk;
229 u8 max_bus_width;
230 int wp_enable;
231 int vs18_enable; /* Use 1.8V if set to 1 */
232 struct mmc_config cfg;
233};
234
235/* Select the correct accessors depending on endianess */
236#if defined CONFIG_SYS_FSL_ESDHC_LE
237#define esdhc_read32 in_le32
238#define esdhc_write32 out_le32
239#define esdhc_clrsetbits32 clrsetbits_le32
240#define esdhc_clrbits32 clrbits_le32
241#define esdhc_setbits32 setbits_le32
242#elif defined(CONFIG_SYS_FSL_ESDHC_BE)
243#define esdhc_read32 in_be32
244#define esdhc_write32 out_be32
245#define esdhc_clrsetbits32 clrsetbits_be32
246#define esdhc_clrbits32 clrbits_be32
247#define esdhc_setbits32 setbits_be32
248#elif __BYTE_ORDER == __LITTLE_ENDIAN
249#define esdhc_read32 in_le32
250#define esdhc_write32 out_le32
251#define esdhc_clrsetbits32 clrsetbits_le32
252#define esdhc_clrbits32 clrbits_le32
253#define esdhc_setbits32 setbits_le32
254#elif __BYTE_ORDER == __BIG_ENDIAN
255#define esdhc_read32 in_be32
256#define esdhc_write32 out_be32
257#define esdhc_clrsetbits32 clrsetbits_be32
258#define esdhc_clrbits32 clrbits_be32
259#define esdhc_setbits32 setbits_be32
260#else
261#error "Endianess is not defined: please fix to continue"
262#endif
263
264#ifdef CONFIG_FSL_ESDHC_IMX
265int fsl_esdhc_mmc_init(bd_t *bis);
266int fsl_esdhc_initialize(bd_t *bis, struct fsl_esdhc_cfg *cfg);
267void fdt_fixup_esdhc(void *blob, bd_t *bd);
268#else
269static inline int fsl_esdhc_mmc_init(bd_t *bis) { return -ENOSYS; }
270static inline void fdt_fixup_esdhc(void *blob, bd_t *bd) {}
271#endif /* CONFIG_FSL_ESDHC_IMX */
272void __noreturn mmc_boot(void);
273void mmc_spl_load_image(uint32_t offs, unsigned int size, void *vdst);
274
275#endif /* __FSL_ESDHC_IMX_H__ */
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