xref: /openbmc/linux/drivers/mmc/host/dw_mmc-exynos.h (revision 2874c5fd)
1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  * Exynos Specific Extensions for Synopsys DW Multimedia Card Interface driver
4  *
5  * Copyright (C) 2012-2014 Samsung Electronics Co., Ltd.
6  */
7 
8 #ifndef _DW_MMC_EXYNOS_H_
9 #define _DW_MMC_EXYNOS_H_
10 
11 #define SDMMC_CLKSEL			0x09C
12 #define SDMMC_CLKSEL64			0x0A8
13 
14 /* Extended Register's Offset */
15 #define SDMMC_HS400_DQS_EN		0x180
16 #define SDMMC_HS400_ASYNC_FIFO_CTRL	0x184
17 #define SDMMC_HS400_DLINE_CTRL		0x188
18 
19 /* CLKSEL register defines */
20 #define SDMMC_CLKSEL_CCLK_SAMPLE(x)	(((x) & 7) << 0)
21 #define SDMMC_CLKSEL_CCLK_DRIVE(x)	(((x) & 7) << 16)
22 #define SDMMC_CLKSEL_CCLK_DIVIDER(x)	(((x) & 7) << 24)
23 #define SDMMC_CLKSEL_GET_DRV_WD3(x)	(((x) >> 16) & 0x7)
24 #define SDMMC_CLKSEL_GET_DIV(x)		(((x) >> 24) & 0x7)
25 #define SDMMC_CLKSEL_UP_SAMPLE(x, y)	(((x) & ~SDMMC_CLKSEL_CCLK_SAMPLE(7)) |\
26 					 SDMMC_CLKSEL_CCLK_SAMPLE(y))
27 #define SDMMC_CLKSEL_TIMING(x, y, z)	(SDMMC_CLKSEL_CCLK_SAMPLE(x) |	\
28 					 SDMMC_CLKSEL_CCLK_DRIVE(y) |	\
29 					 SDMMC_CLKSEL_CCLK_DIVIDER(z))
30 #define SDMMC_CLKSEL_TIMING_MASK	SDMMC_CLKSEL_TIMING(0x7, 0x7, 0x7)
31 #define SDMMC_CLKSEL_WAKEUP_INT		BIT(11)
32 
33 /* RCLK_EN register defines */
34 #define DATA_STROBE_EN			BIT(0)
35 #define AXI_NON_BLOCKING_WR	BIT(7)
36 
37 /* DLINE_CTRL register defines */
38 #define DQS_CTRL_RD_DELAY(x, y)		(((x) & ~0x3FF) | ((y) & 0x3FF))
39 #define DQS_CTRL_GET_RD_DELAY(x)	((x) & 0x3FF)
40 
41 /* Protector Register */
42 #define SDMMC_EMMCP_BASE	0x1000
43 #define SDMMC_MPSECURITY	(SDMMC_EMMCP_BASE + 0x0010)
44 #define SDMMC_MPSBEGIN0		(SDMMC_EMMCP_BASE + 0x0200)
45 #define SDMMC_MPSEND0		(SDMMC_EMMCP_BASE + 0x0204)
46 #define SDMMC_MPSCTRL0		(SDMMC_EMMCP_BASE + 0x020C)
47 
48 /* SMU control defines */
49 #define SDMMC_MPSCTRL_SECURE_READ_BIT		BIT(7)
50 #define SDMMC_MPSCTRL_SECURE_WRITE_BIT		BIT(6)
51 #define SDMMC_MPSCTRL_NON_SECURE_READ_BIT	BIT(5)
52 #define SDMMC_MPSCTRL_NON_SECURE_WRITE_BIT	BIT(4)
53 #define SDMMC_MPSCTRL_USE_FUSE_KEY		BIT(3)
54 #define SDMMC_MPSCTRL_ECB_MODE			BIT(2)
55 #define SDMMC_MPSCTRL_ENCRYPTION		BIT(1)
56 #define SDMMC_MPSCTRL_VALID			BIT(0)
57 
58 /* Maximum number of Ending sector */
59 #define SDMMC_ENDING_SEC_NR_MAX	0xFFFFFFFF
60 
61 /* Fixed clock divider */
62 #define EXYNOS4210_FIXED_CIU_CLK_DIV	2
63 #define EXYNOS4412_FIXED_CIU_CLK_DIV	4
64 #define HS400_FIXED_CIU_CLK_DIV		1
65 
66 /* Minimal required clock frequency for cclkin, unit: HZ */
67 #define EXYNOS_CCLKIN_MIN	50000000
68 
69 #endif /* _DW_MMC_EXYNOS_H_ */
70