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7feafb0ae4
Add Support for UFS Host Controller Interface (UFSHCI) for communicating with Universal Flash Storage (UFS) devices. The steps to initialize the host controller interface are the following: - Initiate the Host Controller Initialization process by writing to the Host controller enable register. - Configure the Host Controller base address registers by allocating a host memory space and related data structures. - Unipro link startup procedure - Check for connected device - Configure UFS host controller to process requests Also register this host controller as a SCSI host controller. Taken from Linux Kernel v5.2 (drivers/scsi/ufs/ufshcd.c) and ported to U-boot. Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
30 lines
702 B
C
30 lines
702 B
C
/* SPDX-License-Identifier: GPL-2.0+ */
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#ifndef _UFS_H
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#define _UFS_H
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/**
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* ufs_probe() - initialize all devices in the UFS uclass
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*
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* @return 0 if Ok, -ve on error
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*/
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int ufs_probe(void);
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/**
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* ufs_probe_dev() - initialize a particular device in the UFS uclass
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*
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* @index: index in the uclass sequence
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*
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* @return 0 if successfully probed, -ve on error
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*/
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int ufs_probe_dev(int index);
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/*
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* ufs_scsi_bind() - Create a new scsi device as a child of the UFS device and
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* bind it to the ufs_scsi driver
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* @ufs_dev: UFS device
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* @scsi_devp: Pointer to scsi device
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*
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* @return 0 if Ok, -ve on error
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*/
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int ufs_scsi_bind(struct udevice *ufs_dev, struct udevice **scsi_devp);
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#endif
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