Hi, On 6/14/18, Sayali Lokhande <sayalil@xxxxxxxxxxxxxx> wrote: > This change adds a new API ufshcd_do_config_device() to > write configuration descriptor with the provisioning data. > Configfs support is added in driver to trigger ufs provisioning at > runtime. Provisioning data is parsed from vendor specific provisioning > file. This parsed data is passed as a buffer via configfs to provision > ufs device. AFAIK, ufd device's every data are will be removed after provisioning. How this working on mobile platform?. Could you share the provisioning and downloading sequence what you expecting?. > > Changes since V2: > Added configfs support for ufs provisioning and removed sysfs > support. > > Changes since V1: > Added device tree entry to parse reference clock frequency > instead of hardcoding 19.2 MHz, as it can vary for different > vendors. Also removed setting ref_clk again during runtime > provisioning as it will be already set during probe. > Used get_unaligned_be*/put_unaligned_be* where applicable. > > Changes since RFC: > Added check to avoid ufs runtime provisioning if > Configuration decriptor lock attribute is set to one. > Instead of parsing ref_clk frequency via device tree, used > correct enum ref_clk_freq value(19.2 Mhz for proviosioning). > Added config_descriptor sysfs entry to provision ufs and also > updated documentation for its correct usage. > Added more protection against bad data handling in sysfs code. > > > Sayali Lokhande (2): > scsi: ufs: Add ufs provisioning support > scsi: ufs: Add configfs support for ufs provisioning > > Subhash Jadavani (1): > scsi: ufs: set the device reference clock setting > > Documentation/ABI/testing/configfs-driver-ufs | 14 ++ > .../devicetree/bindings/ufs/ufshcd-pltfrm.txt | 7 + > drivers/scsi/ufs/Makefile | 1 + > drivers/scsi/ufs/ufs-configfs.c | 191 +++++++++++++++++ > drivers/scsi/ufs/ufs.h | 39 ++++ > drivers/scsi/ufs/ufshcd-pltfrm.c | 24 +++ > drivers/scsi/ufs/ufshcd.c | 234 > +++++++++++++++++++++ > drivers/scsi/ufs/ufshcd.h | 10 + > 8 files changed, 520 insertions(+) > create mode 100644 Documentation/ABI/testing/configfs-driver-ufs > create mode 100644 drivers/scsi/ufs/ufs-configfs.c > > -- > The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, > a Linux Foundation Collaborative Project > >
