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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright (C) 2016 Socionext Inc.
* Author: Masahiro Yamada <yamada.masahiro@socionext.com>
*/
#ifndef SDHCI_CADENCE_H_
#define SDHCI_CADENCE_H_
/* HRS - Host Register Set (specific to Cadence) */
/* PHY access port */
#define SDHCI_CDNS_HRS04 0x10
/* Cadence V4 HRS04 Description*/
#define SDHCI_CDNS_HRS04_ACK BIT(26)
#define SDHCI_CDNS_HRS04_RD BIT(25)
#define SDHCI_CDNS_HRS04_WR BIT(24)
#define SDHCI_CDNS_HRS04_RDATA GENMASK(23, 16)
#define SDHCI_CDNS_HRS04_WDATA GENMASK(15, 8)
#define SDHCI_CDNS_HRS04_ADDR GENMASK(5, 0)
#define SDHCI_CDNS_HRS05 0x14
/* eMMC control */
#define SDHCI_CDNS_HRS06 0x18
#define SDHCI_CDNS_HRS06_TUNE_UP BIT(15)
#define SDHCI_CDNS_HRS06_TUNE GENMASK(13, 8)
#define SDHCI_CDNS_HRS06_MODE GENMASK(2, 0)
#define SDHCI_CDNS_HRS06_MODE_SD 0x0
#define SDHCI_CDNS_HRS06_MODE_MMC_SDR 0x2
#define SDHCI_CDNS_HRS06_MODE_MMC_DDR 0x3
#define SDHCI_CDNS_HRS06_MODE_MMC_HS200 0x4
#define SDHCI_CDNS_HRS06_MODE_MMC_HS400 0x5
#define SDHCI_CDNS_HRS06_MODE_MMC_HS400ES 0x6
/* SRS - Slot Register Set (SDHCI-compatible) */
#define SDHCI_CDNS_SRS_BASE 0x200
/* Cadence V4 PHY Setting*/
#define SDHCI_CDNS_PHY_DLY_SD_HS 0x00
#define SDHCI_CDNS_PHY_DLY_SD_DEFAULT 0x01
#define SDHCI_CDNS_PHY_DLY_UHS_SDR12 0x02
#define SDHCI_CDNS_PHY_DLY_UHS_SDR25 0x03
#define SDHCI_CDNS_PHY_DLY_UHS_SDR50 0x04
#define SDHCI_CDNS_PHY_DLY_UHS_DDR50 0x05
#define SDHCI_CDNS_PHY_DLY_EMMC_LEGACY 0x06
#define SDHCI_CDNS_PHY_DLY_EMMC_SDR 0x07
#define SDHCI_CDNS_PHY_DLY_EMMC_DDR 0x08
#define SDHCI_CDNS_PHY_DLY_SDCLK 0x0b
#define SDHCI_CDNS_PHY_DLY_HSMMC 0x0c
#define SDHCI_CDNS_PHY_DLY_STROBE 0x0d
/*
* The tuned val register is 6 bit-wide, but not the whole of the range is
* available. The range 0-42 seems to be available (then 43 wraps around to 0)
* but I am not quite sure if it is official. Use only 0 to 39 for safety.
*/
#define SDHCI_CDNS_MAX_TUNING_LOOP 40
struct sdhci_cdns_plat {
struct mmc_config cfg;
struct mmc mmc;
void __iomem *hrs_addr;
};
int sdhci_cdns6_phy_adj(struct udevice *dev, struct sdhci_cdns_plat *plat, u32 mode);
int sdhci_cdns6_phy_init(struct udevice *dev, struct sdhci_cdns_plat *plat);
int sdhci_cdns6_set_tune_val(struct sdhci_cdns_plat *plat, unsigned int val);
#endif
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