1 # 2 # Kernel configuration file for the UFS Host Controller 3 # 4 # This code is based on drivers/scsi/ufs/Kconfig 5 # Copyright (C) 2011-2013 Samsung India Software Operations 6 # 7 # Authors: 8 # Santosh Yaraganavi <firstname.lastname@example.org> 9 # Vinayak Holikatti <email@example.com> 10 # 11 # This program is free software; you can redistribute it and/or 12 # modify it under the terms of the GNU General Public License 13 # as published by the Free Software Foundation; either version 2 14 # of the License, or (at your option) any later version. 15 # See the COPYING file in the top-level directory or visit 16 # <http://www.gnu.org/licenses/gpl-2.0.html> 17 # 18 # This program is distributed in the hope that it will be useful, 19 # but WITHOUT ANY WARRANTY; without even the implied warranty of 20 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 21 # GNU General Public License for more details. 22 # 23 # This program is provided "AS IS" and "WITH ALL FAULTS" and 24 # without warranty of any kind. You are solely responsible for 25 # determining the appropriateness of using and distributing 26 # the program and assume all risks associated with your exercise 27 # of rights with respect to the program, including but not limited 28 # to infringement of third party rights, the risks and costs of 29 # program errors, damage to or loss of data, programs or equipment, 30 # and unavailability or interruption of operations. Under no 31 # circumstances will the contributor of this Program be liable for 32 # any damages of any kind arising from your use or distribution of 33 # this program. 34 35 config SCSI_UFSHCD 36 tristate "Universal Flash Storage Controller Driver Core" 37 depends on SCSI && SCSI_DMA 38 select PM_DEVFREQ 39 select DEVFREQ_GOV_SIMPLE_ONDEMAND 40 ---help--- 41 This selects the support for UFS devices in Linux, say Y and make 42 sure that you know the name of your UFS host adapter (the card 43 inside your computer that "speaks" the UFS protocol, also 44 called UFS Host Controller), because you will be asked for it. 45 The module will be called ufshcd. 46 47 To compile this driver as a module, choose M here and read 48 <file:Documentation/scsi/ufs.txt>. 49 However, do not compile this as a module if your root file system 50 (the one containing the directory /) is located on a UFS device. 51 52 config SCSI_UFSHCD_PCI 53 tristate "PCI bus based UFS Controller support" 54 depends on SCSI_UFSHCD && PCI 55 ---help--- 56 This selects the PCI UFS Host Controller Interface. Select this if 57 you have UFS Host Controller with PCI Interface. 58 59 If you have a controller with this interface, say Y or M here. 60 61 If unsure, say N. 62 63 config SCSI_UFSHCD_PLATFORM 64 tristate "Platform bus based UFS Controller support" 65 depends on SCSI_UFSHCD 66 ---help--- 67 This selects the UFS host controller support. Select this if 68 you have an UFS controller on Platform bus. 69 70 If you have a controller with this interface, say Y or M here. 71 72 If unsure, say N. 73 74 config SCSI_UFS_QCOM 75 bool "QCOM specific hooks to UFS controller platform driver" 76 depends on SCSI_UFSHCD_PLATFORM && ARCH_QCOM 77 select PHY_QCOM_UFS 78 help 79 This selects the QCOM specific additions to UFSHCD platform driver. 80 UFS host on QCOM needs some vendor specific configuration before 81 accessing the hardware which includes PHY configuration and vendor 82 specific registers. 83 84 Select this if you have UFS controller on QCOM chipset. 85 If unsure, say N.