mmc: Add Marvell Xenon SDHCI controller driver
This driver implementes platform specific code for the Xenon SDHCI controller which is integrated in the Marvell MVEBU Armada 37xx and Armada 7k / 8K SoCs. History: This driver is ported from the Marvell U-Boot version 2015.01 which is written by Victor Gu <xigu@marvell.com> with minor changes ported from the Linux driver which is written by Ziji Hu <huziji@marvell.com>. Signed-off-by: Stefan Roese <sr@denx.de> Cc: Jaehoon Chung <jh80.chung@samsung.com> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
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				|  | @ -287,6 +287,17 @@ config MMC_SDHCI_SPEAR | ||||||
| 
 | 
 | ||||||
| 	  If unsure, say N. | 	  If unsure, say N. | ||||||
| 
 | 
 | ||||||
|  | config MMC_SDHCI_XENON | ||||||
|  | 	bool "SDHCI support for the Xenon SDHCI controller" | ||||||
|  | 	depends on MMC_SDHCI && DM_MMC && OF_CONTROL | ||||||
|  | 	help | ||||||
|  | 	  Support for Xenon SDHCI host controller on Marvell Armada 3700 | ||||||
|  | 	  7k/8k ARM SoCs platforms | ||||||
|  | 
 | ||||||
|  | 	  If you have a controller with this interface, say Y here. | ||||||
|  | 
 | ||||||
|  | 	  If unsure, say N. | ||||||
|  | 
 | ||||||
| config MMC_SDHCI_TEGRA | config MMC_SDHCI_TEGRA | ||||||
| 	bool "SDHCI platform support for the Tegra SD/MMC Controller" | 	bool "SDHCI platform support for the Tegra SD/MMC Controller" | ||||||
| 	depends on TEGRA | 	depends on TEGRA | ||||||
|  |  | ||||||
|  | @ -68,6 +68,7 @@ obj-$(CONFIG_MMC_SDHCI_MV)		+= mv_sdhci.o | ||||||
| obj-$(CONFIG_MMC_SDHCI_S5P)		+= s5p_sdhci.o | obj-$(CONFIG_MMC_SDHCI_S5P)		+= s5p_sdhci.o | ||||||
| obj-$(CONFIG_MMC_SDHCI_SPEAR)		+= spear_sdhci.o | obj-$(CONFIG_MMC_SDHCI_SPEAR)		+= spear_sdhci.o | ||||||
| obj-$(CONFIG_MMC_SDHCI_TEGRA)		+= tegra_mmc.o | obj-$(CONFIG_MMC_SDHCI_TEGRA)		+= tegra_mmc.o | ||||||
|  | obj-$(CONFIG_MMC_SDHCI_XENON)		+= xenon_sdhci.o | ||||||
| 
 | 
 | ||||||
| obj-$(CONFIG_MMC_SUNXI)			+= sunxi_mmc.o | obj-$(CONFIG_MMC_SUNXI)			+= sunxi_mmc.o | ||||||
| obj-$(CONFIG_MMC_UNIPHIER)		+= uniphier-sd.o | obj-$(CONFIG_MMC_UNIPHIER)		+= uniphier-sd.o | ||||||
|  |  | ||||||
|  | @ -0,0 +1,497 @@ | ||||||
|  | /*
 | ||||||
|  |  * Driver for Marvell SOC Platform Group Xenon SDHC as a platform device | ||||||
|  |  * | ||||||
|  |  * Copyright (C) 2016 Marvell, All Rights Reserved. | ||||||
|  |  * | ||||||
|  |  * Author:	Victor Gu <xigu@marvell.com> | ||||||
|  |  * Date:	2016-8-24 | ||||||
|  |  * | ||||||
|  |  * Included parts of the Linux driver version which was written by: | ||||||
|  |  * Hu Ziji <huziji@marvell.com> | ||||||
|  |  * | ||||||
|  |  * Ported to from Marvell 2015.01 to mainline U-Boot 2017.01: | ||||||
|  |  * Stefan Roese <sr@denx.de> | ||||||
|  |  * | ||||||
|  |  * SPDX-License-Identifier:	GPL-2.0 | ||||||
|  |  */ | ||||||
|  | 
 | ||||||
|  | #include <common.h> | ||||||
|  | #include <dm.h> | ||||||
|  | #include <fdtdec.h> | ||||||
|  | #include <libfdt.h> | ||||||
|  | #include <malloc.h> | ||||||
|  | #include <sdhci.h> | ||||||
|  | 
 | ||||||
|  | DECLARE_GLOBAL_DATA_PTR; | ||||||
|  | 
 | ||||||
|  | /* Register Offset of SD Host Controller SOCP self-defined register */ | ||||||
|  | #define SDHC_SYS_CFG_INFO			0x0104 | ||||||
|  | #define SLOT_TYPE_SDIO_SHIFT			24 | ||||||
|  | #define SLOT_TYPE_EMMC_MASK			0xFF | ||||||
|  | #define SLOT_TYPE_EMMC_SHIFT			16 | ||||||
|  | #define SLOT_TYPE_SD_SDIO_MMC_MASK		0xFF | ||||||
|  | #define SLOT_TYPE_SD_SDIO_MMC_SHIFT		8 | ||||||
|  | #define NR_SUPPORTED_SLOT_MASK			0x7 | ||||||
|  | 
 | ||||||
|  | #define SDHC_SYS_OP_CTRL			0x0108 | ||||||
|  | #define AUTO_CLKGATE_DISABLE_MASK		BIT(20) | ||||||
|  | #define SDCLK_IDLEOFF_ENABLE_SHIFT		8 | ||||||
|  | #define SLOT_ENABLE_SHIFT			0 | ||||||
|  | 
 | ||||||
|  | #define SDHC_SYS_EXT_OP_CTRL			0x010C | ||||||
|  | #define MASK_CMD_CONFLICT_ERROR			BIT(8) | ||||||
|  | 
 | ||||||
|  | #define SDHC_SLOT_RETUNING_REQ_CTRL		0x0144 | ||||||
|  | /* retuning compatible */ | ||||||
|  | #define RETUNING_COMPATIBLE			0x1 | ||||||
|  | 
 | ||||||
|  | /* Xenon specific Mode Select value */ | ||||||
|  | #define XENON_SDHCI_CTRL_HS200			0x5 | ||||||
|  | #define XENON_SDHCI_CTRL_HS400			0x6 | ||||||
|  | 
 | ||||||
|  | #define EMMC_PHY_REG_BASE			0x170 | ||||||
|  | #define EMMC_PHY_TIMING_ADJUST			EMMC_PHY_REG_BASE | ||||||
|  | #define OUTPUT_QSN_PHASE_SELECT			BIT(17) | ||||||
|  | #define SAMPL_INV_QSP_PHASE_SELECT		BIT(18) | ||||||
|  | #define SAMPL_INV_QSP_PHASE_SELECT_SHIFT	18 | ||||||
|  | #define EMMC_PHY_SLOW_MODE			BIT(29) | ||||||
|  | #define PHY_INITIALIZAION			BIT(31) | ||||||
|  | #define WAIT_CYCLE_BEFORE_USING_MASK		0xf | ||||||
|  | #define WAIT_CYCLE_BEFORE_USING_SHIFT		12 | ||||||
|  | #define FC_SYNC_EN_DURATION_MASK		0xf | ||||||
|  | #define FC_SYNC_EN_DURATION_SHIFT		8 | ||||||
|  | #define FC_SYNC_RST_EN_DURATION_MASK		0xf | ||||||
|  | #define FC_SYNC_RST_EN_DURATION_SHIFT		4 | ||||||
|  | #define FC_SYNC_RST_DURATION_MASK		0xf | ||||||
|  | #define FC_SYNC_RST_DURATION_SHIFT		0 | ||||||
|  | 
 | ||||||
|  | #define EMMC_PHY_FUNC_CONTROL			(EMMC_PHY_REG_BASE + 0x4) | ||||||
|  | #define DQ_ASYNC_MODE				BIT(4) | ||||||
|  | #define DQ_DDR_MODE_SHIFT			8 | ||||||
|  | #define DQ_DDR_MODE_MASK			0xff | ||||||
|  | #define CMD_DDR_MODE				BIT(16) | ||||||
|  | 
 | ||||||
|  | #define EMMC_PHY_PAD_CONTROL			(EMMC_PHY_REG_BASE + 0x8) | ||||||
|  | #define REC_EN_SHIFT				24 | ||||||
|  | #define REC_EN_MASK				0xf | ||||||
|  | #define FC_DQ_RECEN				BIT(24) | ||||||
|  | #define FC_CMD_RECEN				BIT(25) | ||||||
|  | #define FC_QSP_RECEN				BIT(26) | ||||||
|  | #define FC_QSN_RECEN				BIT(27) | ||||||
|  | #define OEN_QSN					BIT(28) | ||||||
|  | #define AUTO_RECEN_CTRL				BIT(30) | ||||||
|  | 
 | ||||||
|  | #define EMMC_PHY_PAD_CONTROL1			(EMMC_PHY_REG_BASE + 0xc) | ||||||
|  | #define EMMC5_1_FC_QSP_PD			BIT(9) | ||||||
|  | #define EMMC5_1_FC_QSP_PU			BIT(25) | ||||||
|  | #define EMMC5_1_FC_CMD_PD			BIT(8) | ||||||
|  | #define EMMC5_1_FC_CMD_PU			BIT(24) | ||||||
|  | #define EMMC5_1_FC_DQ_PD			0xff | ||||||
|  | #define EMMC5_1_FC_DQ_PU			(0xff << 16) | ||||||
|  | 
 | ||||||
|  | #define SDHCI_RETUNE_EVT_INTSIG			0x00001000 | ||||||
|  | 
 | ||||||
|  | /* Hyperion only have one slot 0 */ | ||||||
|  | #define XENON_MMC_SLOT_ID_HYPERION		0 | ||||||
|  | 
 | ||||||
|  | #define MMC_TIMING_LEGACY	0 | ||||||
|  | #define MMC_TIMING_MMC_HS	1 | ||||||
|  | #define MMC_TIMING_SD_HS	2 | ||||||
|  | #define MMC_TIMING_UHS_SDR12	3 | ||||||
|  | #define MMC_TIMING_UHS_SDR25	4 | ||||||
|  | #define MMC_TIMING_UHS_SDR50	5 | ||||||
|  | #define MMC_TIMING_UHS_SDR104	6 | ||||||
|  | #define MMC_TIMING_UHS_DDR50	7 | ||||||
|  | #define MMC_TIMING_MMC_DDR52	8 | ||||||
|  | #define MMC_TIMING_MMC_HS200	9 | ||||||
|  | #define MMC_TIMING_MMC_HS400	10 | ||||||
|  | 
 | ||||||
|  | #define XENON_MMC_MAX_CLK	400000000 | ||||||
|  | 
 | ||||||
|  | enum soc_pad_ctrl_type { | ||||||
|  | 	SOC_PAD_SD, | ||||||
|  | 	SOC_PAD_FIXED_1_8V, | ||||||
|  | }; | ||||||
|  | 
 | ||||||
|  | struct xenon_sdhci_plat { | ||||||
|  | 	struct mmc_config cfg; | ||||||
|  | 	struct mmc mmc; | ||||||
|  | }; | ||||||
|  | 
 | ||||||
|  | struct xenon_sdhci_priv { | ||||||
|  | 	struct sdhci_host host; | ||||||
|  | 
 | ||||||
|  | 	u8 timing; | ||||||
|  | 
 | ||||||
|  | 	unsigned int clock; | ||||||
|  | 
 | ||||||
|  | 	void *pad_ctrl_reg; | ||||||
|  | 	int pad_type; | ||||||
|  | }; | ||||||
|  | 
 | ||||||
|  | static int xenon_mmc_phy_init(struct sdhci_host *host) | ||||||
|  | { | ||||||
|  | 	struct xenon_sdhci_priv *priv = host->mmc->priv; | ||||||
|  | 	u32 clock = priv->clock; | ||||||
|  | 	u32 time; | ||||||
|  | 	u32 var; | ||||||
|  | 
 | ||||||
|  | 	/* Enable QSP PHASE SELECT */ | ||||||
|  | 	var = sdhci_readl(host, EMMC_PHY_TIMING_ADJUST); | ||||||
|  | 	var |= SAMPL_INV_QSP_PHASE_SELECT; | ||||||
|  | 	if ((priv->timing == MMC_TIMING_UHS_SDR50) || | ||||||
|  | 	    (priv->timing == MMC_TIMING_UHS_SDR25) || | ||||||
|  | 	    (priv->timing == MMC_TIMING_UHS_SDR12) || | ||||||
|  | 	    (priv->timing == MMC_TIMING_SD_HS) || | ||||||
|  | 	    (priv->timing == MMC_TIMING_LEGACY)) | ||||||
|  | 		var |= EMMC_PHY_SLOW_MODE; | ||||||
|  | 	sdhci_writel(host, var, EMMC_PHY_TIMING_ADJUST); | ||||||
|  | 
 | ||||||
|  | 	/* Poll for host MMC PHY clock init to be stable */ | ||||||
|  | 	/* Wait up to 10ms */ | ||||||
|  | 	time = 100; | ||||||
|  | 	while (time--) { | ||||||
|  | 		var = sdhci_readl(host, SDHCI_CLOCK_CONTROL); | ||||||
|  | 		if (var & SDHCI_CLOCK_INT_STABLE) | ||||||
|  | 			break; | ||||||
|  | 
 | ||||||
|  | 		udelay(100); | ||||||
|  | 	} | ||||||
|  | 
 | ||||||
|  | 	if (time <= 0) { | ||||||
|  | 		error("Failed to enable MMC internal clock in time\n"); | ||||||
|  | 		return -ETIMEDOUT; | ||||||
|  | 	} | ||||||
|  | 
 | ||||||
|  | 	/* Init PHY */ | ||||||
|  | 	var = sdhci_readl(host, EMMC_PHY_TIMING_ADJUST); | ||||||
|  | 	var |= PHY_INITIALIZAION; | ||||||
|  | 	sdhci_writel(host, var, EMMC_PHY_TIMING_ADJUST); | ||||||
|  | 
 | ||||||
|  | 	if (clock == 0) { | ||||||
|  | 		/* Use the possibly slowest bus frequency value */ | ||||||
|  | 		clock = 100000; | ||||||
|  | 	} | ||||||
|  | 
 | ||||||
|  | 	/* Poll for host eMMC PHY init to complete */ | ||||||
|  | 	/* Wait up to 10ms */ | ||||||
|  | 	time = 100; | ||||||
|  | 	while (time--) { | ||||||
|  | 		var = sdhci_readl(host, EMMC_PHY_TIMING_ADJUST); | ||||||
|  | 		var &= PHY_INITIALIZAION; | ||||||
|  | 		if (!var) | ||||||
|  | 			break; | ||||||
|  | 
 | ||||||
|  | 		/* wait for host eMMC PHY init to complete */ | ||||||
|  | 		udelay(100); | ||||||
|  | 	} | ||||||
|  | 
 | ||||||
|  | 	if (time <= 0) { | ||||||
|  | 		error("Failed to init MMC PHY in time\n"); | ||||||
|  | 		return -ETIMEDOUT; | ||||||
|  | 	} | ||||||
|  | 
 | ||||||
|  | 	return 0; | ||||||
|  | } | ||||||
|  | 
 | ||||||
|  | #define ARMADA_3700_SOC_PAD_1_8V	0x1 | ||||||
|  | #define ARMADA_3700_SOC_PAD_3_3V	0x0 | ||||||
|  | 
 | ||||||
|  | static void armada_3700_soc_pad_voltage_set(struct sdhci_host *host) | ||||||
|  | { | ||||||
|  | 	struct xenon_sdhci_priv *priv = host->mmc->priv; | ||||||
|  | 
 | ||||||
|  | 	if (priv->pad_type == SOC_PAD_FIXED_1_8V) | ||||||
|  | 		writel(ARMADA_3700_SOC_PAD_1_8V, priv->pad_ctrl_reg); | ||||||
|  | 	else if (priv->pad_type == SOC_PAD_SD) | ||||||
|  | 		writel(ARMADA_3700_SOC_PAD_3_3V, priv->pad_ctrl_reg); | ||||||
|  | } | ||||||
|  | 
 | ||||||
|  | static void xenon_mmc_phy_set(struct sdhci_host *host) | ||||||
|  | { | ||||||
|  | 	struct xenon_sdhci_priv *priv = host->mmc->priv; | ||||||
|  | 	u32 var; | ||||||
|  | 
 | ||||||
|  | 	/* Setup pad, set bit[30], bit[28] and bits[26:24] */ | ||||||
|  | 	var = sdhci_readl(host, EMMC_PHY_PAD_CONTROL); | ||||||
|  | 	var |= AUTO_RECEN_CTRL | OEN_QSN | FC_QSP_RECEN | | ||||||
|  | 		FC_CMD_RECEN | FC_DQ_RECEN; | ||||||
|  | 	sdhci_writel(host, var, EMMC_PHY_PAD_CONTROL); | ||||||
|  | 
 | ||||||
|  | 	/* Set CMD and DQ Pull Up */ | ||||||
|  | 	var = sdhci_readl(host, EMMC_PHY_PAD_CONTROL1); | ||||||
|  | 	var |= (EMMC5_1_FC_CMD_PU | EMMC5_1_FC_DQ_PU); | ||||||
|  | 	var &= ~(EMMC5_1_FC_CMD_PD | EMMC5_1_FC_DQ_PD); | ||||||
|  | 	sdhci_writel(host, var, EMMC_PHY_PAD_CONTROL1); | ||||||
|  | 
 | ||||||
|  | 	/*
 | ||||||
|  | 	 * If timing belongs to high speed, set bit[17] of | ||||||
|  | 	 * EMMC_PHY_TIMING_ADJUST register | ||||||
|  | 	 */ | ||||||
|  | 	if ((priv->timing == MMC_TIMING_MMC_HS400) || | ||||||
|  | 	    (priv->timing == MMC_TIMING_MMC_HS200) || | ||||||
|  | 	    (priv->timing == MMC_TIMING_UHS_SDR50) || | ||||||
|  | 	    (priv->timing == MMC_TIMING_UHS_SDR104) || | ||||||
|  | 	    (priv->timing == MMC_TIMING_UHS_DDR50) || | ||||||
|  | 	    (priv->timing == MMC_TIMING_UHS_SDR25) || | ||||||
|  | 	    (priv->timing == MMC_TIMING_MMC_DDR52)) { | ||||||
|  | 		var = sdhci_readl(host, EMMC_PHY_TIMING_ADJUST); | ||||||
|  | 		var |= OUTPUT_QSN_PHASE_SELECT; | ||||||
|  | 		sdhci_writel(host, var, EMMC_PHY_TIMING_ADJUST); | ||||||
|  | 	} | ||||||
|  | 
 | ||||||
|  | 	/*
 | ||||||
|  | 	 * When setting EMMC_PHY_FUNC_CONTROL register, | ||||||
|  | 	 * SD clock should be disabled | ||||||
|  | 	 */ | ||||||
|  | 	var = sdhci_readl(host, SDHCI_CLOCK_CONTROL); | ||||||
|  | 	var &= ~SDHCI_CLOCK_CARD_EN; | ||||||
|  | 	sdhci_writew(host, var, SDHCI_CLOCK_CONTROL); | ||||||
|  | 
 | ||||||
|  | 	var = sdhci_readl(host, EMMC_PHY_FUNC_CONTROL); | ||||||
|  | 	if (host->mmc->ddr_mode) { | ||||||
|  | 		var |= (DQ_DDR_MODE_MASK << DQ_DDR_MODE_SHIFT) | CMD_DDR_MODE; | ||||||
|  | 	} else { | ||||||
|  | 		var &= ~((DQ_DDR_MODE_MASK << DQ_DDR_MODE_SHIFT) | | ||||||
|  | 			 CMD_DDR_MODE); | ||||||
|  | 	} | ||||||
|  | 	sdhci_writel(host, var, EMMC_PHY_FUNC_CONTROL); | ||||||
|  | 
 | ||||||
|  | 	/* Enable bus clock */ | ||||||
|  | 	var = sdhci_readl(host, SDHCI_CLOCK_CONTROL); | ||||||
|  | 	var |= SDHCI_CLOCK_CARD_EN; | ||||||
|  | 	sdhci_writew(host, var, SDHCI_CLOCK_CONTROL); | ||||||
|  | 
 | ||||||
|  | 	xenon_mmc_phy_init(host); | ||||||
|  | } | ||||||
|  | 
 | ||||||
|  | /* Enable/Disable the Auto Clock Gating function of this slot */ | ||||||
|  | static void xenon_mmc_set_acg(struct sdhci_host *host, bool enable) | ||||||
|  | { | ||||||
|  | 	u32 var; | ||||||
|  | 
 | ||||||
|  | 	var = sdhci_readl(host, SDHC_SYS_OP_CTRL); | ||||||
|  | 	if (enable) | ||||||
|  | 		var &= ~AUTO_CLKGATE_DISABLE_MASK; | ||||||
|  | 	else | ||||||
|  | 		var |= AUTO_CLKGATE_DISABLE_MASK; | ||||||
|  | 
 | ||||||
|  | 	sdhci_writel(host, var, SDHC_SYS_OP_CTRL); | ||||||
|  | } | ||||||
|  | 
 | ||||||
|  | #define SLOT_MASK(slot)		BIT(slot) | ||||||
|  | 
 | ||||||
|  | /* Enable specific slot */ | ||||||
|  | static void xenon_mmc_enable_slot(struct sdhci_host *host, u8 slot) | ||||||
|  | { | ||||||
|  | 	u32 var; | ||||||
|  | 
 | ||||||
|  | 	var = sdhci_readl(host, SDHC_SYS_OP_CTRL); | ||||||
|  | 	var |= SLOT_MASK(slot) << SLOT_ENABLE_SHIFT; | ||||||
|  | 	sdhci_writel(host, var, SDHC_SYS_OP_CTRL); | ||||||
|  | } | ||||||
|  | 
 | ||||||
|  | /* Enable Parallel Transfer Mode */ | ||||||
|  | static void xenon_mmc_enable_parallel_tran(struct sdhci_host *host, u8 slot) | ||||||
|  | { | ||||||
|  | 	u32 var; | ||||||
|  | 
 | ||||||
|  | 	var = sdhci_readl(host, SDHC_SYS_EXT_OP_CTRL); | ||||||
|  | 	var |= SLOT_MASK(slot); | ||||||
|  | 	sdhci_writel(host, var, SDHC_SYS_EXT_OP_CTRL); | ||||||
|  | } | ||||||
|  | 
 | ||||||
|  | static void xenon_mmc_disable_tuning(struct sdhci_host *host, u8 slot) | ||||||
|  | { | ||||||
|  | 	u32 var; | ||||||
|  | 
 | ||||||
|  | 	/* Clear the Re-Tuning Request functionality */ | ||||||
|  | 	var = sdhci_readl(host, SDHC_SLOT_RETUNING_REQ_CTRL); | ||||||
|  | 	var &= ~RETUNING_COMPATIBLE; | ||||||
|  | 	sdhci_writel(host, var, SDHC_SLOT_RETUNING_REQ_CTRL); | ||||||
|  | 
 | ||||||
|  | 	/* Clear the Re-tuning Event Signal Enable */ | ||||||
|  | 	var = sdhci_readl(host, SDHCI_SIGNAL_ENABLE); | ||||||
|  | 	var &= ~SDHCI_RETUNE_EVT_INTSIG; | ||||||
|  | 	sdhci_writel(host, var, SDHCI_SIGNAL_ENABLE); | ||||||
|  | } | ||||||
|  | 
 | ||||||
|  | /* Mask command conflict error */ | ||||||
|  | static void xenon_mask_cmd_conflict_err(struct sdhci_host *host) | ||||||
|  | { | ||||||
|  | 	u32  reg; | ||||||
|  | 
 | ||||||
|  | 	reg = sdhci_readl(host, SDHC_SYS_EXT_OP_CTRL); | ||||||
|  | 	reg |= MASK_CMD_CONFLICT_ERROR; | ||||||
|  | 	sdhci_writel(host, reg, SDHC_SYS_EXT_OP_CTRL); | ||||||
|  | } | ||||||
|  | 
 | ||||||
|  | /* Platform specific function for post set_ios configuration */ | ||||||
|  | static void xenon_sdhci_set_ios_post(struct sdhci_host *host) | ||||||
|  | { | ||||||
|  | 	struct xenon_sdhci_priv *priv = host->mmc->priv; | ||||||
|  | 	uint speed = host->mmc->tran_speed; | ||||||
|  | 	int pwr_18v = 0; | ||||||
|  | 
 | ||||||
|  | 	if ((sdhci_readb(host, SDHCI_POWER_CONTROL) & ~SDHCI_POWER_ON) == | ||||||
|  | 	    SDHCI_POWER_180) | ||||||
|  | 		pwr_18v = 1; | ||||||
|  | 
 | ||||||
|  | 	/* Set timing variable according to the configured speed */ | ||||||
|  | 	if (IS_SD(host->mmc)) { | ||||||
|  | 		/* SD/SDIO */ | ||||||
|  | 		if (pwr_18v) { | ||||||
|  | 			if (host->mmc->ddr_mode) | ||||||
|  | 				priv->timing = MMC_TIMING_UHS_DDR50; | ||||||
|  | 			else if (speed <= 25000000) | ||||||
|  | 				priv->timing = MMC_TIMING_UHS_SDR25; | ||||||
|  | 			else | ||||||
|  | 				priv->timing = MMC_TIMING_UHS_SDR50; | ||||||
|  | 		} else { | ||||||
|  | 			if (speed <= 25000000) | ||||||
|  | 				priv->timing = MMC_TIMING_LEGACY; | ||||||
|  | 			else | ||||||
|  | 				priv->timing = MMC_TIMING_SD_HS; | ||||||
|  | 		} | ||||||
|  | 	} else { | ||||||
|  | 		/* eMMC */ | ||||||
|  | 		if (host->mmc->ddr_mode) | ||||||
|  | 			priv->timing = MMC_TIMING_MMC_DDR52; | ||||||
|  | 		else if (speed <= 26000000) | ||||||
|  | 			priv->timing = MMC_TIMING_LEGACY; | ||||||
|  | 		else | ||||||
|  | 			priv->timing = MMC_TIMING_MMC_HS; | ||||||
|  | 	} | ||||||
|  | 
 | ||||||
|  | 	/* Re-init the PHY */ | ||||||
|  | 	xenon_mmc_phy_set(host); | ||||||
|  | } | ||||||
|  | 
 | ||||||
|  | /* Install a driver specific handler for post set_ios configuration */ | ||||||
|  | static const struct sdhci_ops xenon_sdhci_ops = { | ||||||
|  | 	.set_ios_post = xenon_sdhci_set_ios_post | ||||||
|  | }; | ||||||
|  | 
 | ||||||
|  | static int xenon_sdhci_probe(struct udevice *dev) | ||||||
|  | { | ||||||
|  | 	struct xenon_sdhci_plat *plat = dev_get_platdata(dev); | ||||||
|  | 	struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev); | ||||||
|  | 	struct xenon_sdhci_priv *priv = dev_get_priv(dev); | ||||||
|  | 	struct sdhci_host *host = dev_get_priv(dev); | ||||||
|  | 	int ret; | ||||||
|  | 
 | ||||||
|  | 	host->mmc = &plat->mmc; | ||||||
|  | 	host->mmc->priv = host; | ||||||
|  | 	host->mmc->dev = dev; | ||||||
|  | 	upriv->mmc = host->mmc; | ||||||
|  | 
 | ||||||
|  | 	/* Set quirks */ | ||||||
|  | 	host->quirks = SDHCI_QUIRK_WAIT_SEND_CMD | SDHCI_QUIRK_32BIT_DMA_ADDR; | ||||||
|  | 
 | ||||||
|  | 	/* Set default timing */ | ||||||
|  | 	priv->timing = MMC_TIMING_LEGACY; | ||||||
|  | 
 | ||||||
|  | 	/* Disable auto clock gating during init */ | ||||||
|  | 	xenon_mmc_set_acg(host, false); | ||||||
|  | 
 | ||||||
|  | 	/* Enable slot */ | ||||||
|  | 	xenon_mmc_enable_slot(host, XENON_MMC_SLOT_ID_HYPERION); | ||||||
|  | 
 | ||||||
|  | 	/*
 | ||||||
|  | 	 * Set default power on SoC PHY PAD register (currently only | ||||||
|  | 	 * available on the Armada 3700) | ||||||
|  | 	 */ | ||||||
|  | 	if (priv->pad_ctrl_reg) | ||||||
|  | 		armada_3700_soc_pad_voltage_set(host); | ||||||
|  | 
 | ||||||
|  | 	host->host_caps = MMC_MODE_HS | MMC_MODE_HS_52MHz | MMC_MODE_DDR_52MHz; | ||||||
|  | 	switch (fdtdec_get_int(gd->fdt_blob, dev->of_offset, "bus-width", 1)) { | ||||||
|  | 	case 8: | ||||||
|  | 		host->host_caps |= MMC_MODE_8BIT; | ||||||
|  | 		break; | ||||||
|  | 	case 4: | ||||||
|  | 		host->host_caps |= MMC_MODE_4BIT; | ||||||
|  | 		break; | ||||||
|  | 	case 1: | ||||||
|  | 		break; | ||||||
|  | 	default: | ||||||
|  | 		printf("Invalid \"bus-width\" value\n"); | ||||||
|  | 		return -EINVAL; | ||||||
|  | 	} | ||||||
|  | 
 | ||||||
|  | 	host->ops = &xenon_sdhci_ops; | ||||||
|  | 
 | ||||||
|  | 	ret = sdhci_setup_cfg(&plat->cfg, host, XENON_MMC_MAX_CLK, 0); | ||||||
|  | 	if (ret) | ||||||
|  | 		return ret; | ||||||
|  | 
 | ||||||
|  | 	ret = sdhci_probe(dev); | ||||||
|  | 	if (ret) | ||||||
|  | 		return ret; | ||||||
|  | 
 | ||||||
|  | 	/* Enable parallel transfer */ | ||||||
|  | 	xenon_mmc_enable_parallel_tran(host, XENON_MMC_SLOT_ID_HYPERION); | ||||||
|  | 
 | ||||||
|  | 	/* Disable tuning functionality of this slot */ | ||||||
|  | 	xenon_mmc_disable_tuning(host, XENON_MMC_SLOT_ID_HYPERION); | ||||||
|  | 
 | ||||||
|  | 	/* Enable auto clock gating after init */ | ||||||
|  | 	xenon_mmc_set_acg(host, true); | ||||||
|  | 
 | ||||||
|  | 	xenon_mask_cmd_conflict_err(host); | ||||||
|  | 
 | ||||||
|  | 	return ret; | ||||||
|  | } | ||||||
|  | 
 | ||||||
|  | static int xenon_sdhci_ofdata_to_platdata(struct udevice *dev) | ||||||
|  | { | ||||||
|  | 	struct sdhci_host *host = dev_get_priv(dev); | ||||||
|  | 	struct xenon_sdhci_priv *priv = dev_get_priv(dev); | ||||||
|  | 	const char *name; | ||||||
|  | 
 | ||||||
|  | 	host->name = dev->name; | ||||||
|  | 	host->ioaddr = (void *)dev_get_addr(dev); | ||||||
|  | 
 | ||||||
|  | 	if (of_device_is_compatible(dev, "marvell,armada-3700-sdhci")) | ||||||
|  | 		priv->pad_ctrl_reg = (void *)dev_get_addr_index(dev, 1); | ||||||
|  | 
 | ||||||
|  | 	name = fdt_getprop(gd->fdt_blob, dev->of_offset, "marvell,pad-type", | ||||||
|  | 			   NULL); | ||||||
|  | 	if (name) { | ||||||
|  | 		if (0 == strncmp(name, "sd", 2)) { | ||||||
|  | 			priv->pad_type = SOC_PAD_SD; | ||||||
|  | 		} else if (0 == strncmp(name, "fixed-1-8v", 10)) { | ||||||
|  | 			priv->pad_type = SOC_PAD_FIXED_1_8V; | ||||||
|  | 		} else { | ||||||
|  | 			printf("Unsupported SOC PHY PAD ctrl type %s\n", name); | ||||||
|  | 			return -EINVAL; | ||||||
|  | 		} | ||||||
|  | 	} | ||||||
|  | 
 | ||||||
|  | 	return 0; | ||||||
|  | } | ||||||
|  | 
 | ||||||
|  | static int xenon_sdhci_bind(struct udevice *dev) | ||||||
|  | { | ||||||
|  | 	struct xenon_sdhci_plat *plat = dev_get_platdata(dev); | ||||||
|  | 
 | ||||||
|  | 	return sdhci_bind(dev, &plat->mmc, &plat->cfg); | ||||||
|  | } | ||||||
|  | 
 | ||||||
|  | static const struct udevice_id xenon_sdhci_ids[] = { | ||||||
|  | 	{ .compatible = "marvell,armada-8k-sdhci",}, | ||||||
|  | 	{ .compatible = "marvell,armada-3700-sdhci",}, | ||||||
|  | 	{ } | ||||||
|  | }; | ||||||
|  | 
 | ||||||
|  | U_BOOT_DRIVER(xenon_sdhci_drv) = { | ||||||
|  | 	.name		= "xenon_sdhci", | ||||||
|  | 	.id		= UCLASS_MMC, | ||||||
|  | 	.of_match	= xenon_sdhci_ids, | ||||||
|  | 	.ofdata_to_platdata = xenon_sdhci_ofdata_to_platdata, | ||||||
|  | 	.ops		= &sdhci_ops, | ||||||
|  | 	.bind		= xenon_sdhci_bind, | ||||||
|  | 	.probe		= xenon_sdhci_probe, | ||||||
|  | 	.priv_auto_alloc_size = sizeof(struct xenon_sdhci_priv), | ||||||
|  | 	.platdata_auto_alloc_size = sizeof(struct xenon_sdhci_plat), | ||||||
|  | }; | ||||||
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		Reference in New Issue