1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright (C) 2016 Marvell, All Rights Reserved. 4 * 5 * Author: Hu Ziji <huziji@marvell.com> 6 * Date: 2016-8-24 7 */ 8 #ifndef SDHCI_XENON_H_ 9 #define SDHCI_XENON_H_ 10 11 /* Register Offset of Xenon SDHC self-defined register */ 12 #define XENON_SYS_CFG_INFO 0x0104 13 #define XENON_SLOT_TYPE_SDIO_SHIFT 24 14 #define XENON_NR_SUPPORTED_SLOT_MASK 0x7 15 16 #define XENON_SYS_OP_CTRL 0x0108 17 #define XENON_AUTO_CLKGATE_DISABLE_MASK BIT(20) 18 #define XENON_SDCLK_IDLEOFF_ENABLE_SHIFT 8 19 #define XENON_SLOT_ENABLE_SHIFT 0 20 21 #define XENON_SYS_EXT_OP_CTRL 0x010C 22 #define XENON_MASK_CMD_CONFLICT_ERR BIT(8) 23 24 #define XENON_SLOT_OP_STATUS_CTRL 0x0128 25 #define XENON_TUN_CONSECUTIVE_TIMES_SHIFT 16 26 #define XENON_TUN_CONSECUTIVE_TIMES_MASK 0x7 27 #define XENON_TUN_CONSECUTIVE_TIMES 0x4 28 #define XENON_TUNING_STEP_SHIFT 12 29 #define XENON_TUNING_STEP_MASK 0xF 30 #define XENON_TUNING_STEP_DIVIDER BIT(6) 31 32 #define XENON_SLOT_EMMC_CTRL 0x0130 33 #define XENON_ENABLE_RESP_STROBE BIT(25) 34 #define XENON_ENABLE_DATA_STROBE BIT(24) 35 36 #define XENON_SLOT_RETUNING_REQ_CTRL 0x0144 37 /* retuning compatible */ 38 #define XENON_RETUNING_COMPATIBLE 0x1 39 40 #define XENON_SLOT_EXT_PRESENT_STATE 0x014C 41 #define XENON_DLL_LOCK_STATE 0x1 42 43 #define XENON_SLOT_DLL_CUR_DLY_VAL 0x0150 44 45 /* Tuning Parameter */ 46 #define XENON_TMR_RETUN_NO_PRESENT 0xF 47 #define XENON_DEF_TUNING_COUNT 0x9 48 49 #define XENON_DEFAULT_SDCLK_FREQ 400000 50 #define XENON_LOWEST_SDCLK_FREQ 100000 51 52 /* Xenon specific Mode Select value */ 53 #define XENON_CTRL_HS200 0x5 54 #define XENON_CTRL_HS400 0x6 55 56 struct xenon_priv { 57 unsigned char tuning_count; 58 /* idx of SDHC */ 59 u8 sdhc_id; 60 61 /* 62 * eMMC/SD/SDIO require different register settings. 63 * Xenon driver has to recognize card type 64 * before mmc_host->card is not available. 65 * This field records the card type during init. 66 * It is updated in xenon_init_card(). 67 * 68 * It is only valid during initialization after it is updated. 69 * Do not access this variable in normal transfers after 70 * initialization completes. 71 */ 72 unsigned int init_card_type; 73 74 /* 75 * The bus_width, timing, and clock fields in below 76 * record the current ios setting of Xenon SDHC. 77 * Driver will adjust PHY setting if any change to 78 * ios affects PHY timing. 79 */ 80 unsigned char bus_width; 81 unsigned char timing; 82 unsigned int clock; 83 struct clk *axi_clk; 84 85 int phy_type; 86 /* 87 * Contains board-specific PHY parameters 88 * passed from device tree. 89 */ 90 void *phy_params; 91 struct xenon_emmc_phy_regs *emmc_phy_regs; 92 bool restore_needed; 93 }; 94 95 int xenon_phy_adj(struct sdhci_host *host, struct mmc_ios *ios); 96 int xenon_phy_parse_dt(struct device_node *np, 97 struct sdhci_host *host); 98 void xenon_soc_pad_ctrl(struct sdhci_host *host, 99 unsigned char signal_voltage); 100 #endif 101