Hi Arnd, On 3/2/2016 7:55 PM, Arnd Bergmann wrote: > On Wednesday 02 March 2016 16:46:47 Joao Pinto wrote: >> On 2/19/2016 3:03 PM, Arnd Bergmann wrote: >>> On Thursday 18 February 2016 17:20:27 Joao Pinto wrote: Facts: - Test Chip type are currently not detectable in runtime through the controller - In the future the Test Chip version will be available in the controller - Test Chip initialization is different for each type - The IP Core version is 1.40a - Test Chip version is 6.00 - Teh UFS version is 2.0 Suggested driver architecture: Platform setup: tc-dwc-g210-pltfrm --> tc-dwc-g210 --> ufshcd-dwc-pltfrm --> ufshcd-dwc --> ufs The test chip platform driver could be called through 2 compatibility strings. indicating the chip's version and bit type: "snps, g210-tc-6.00-20bit" "snps, g210-tc-6.00-40bit" The device tree node would have additional info compatibility strings as the DWC IP core version and UFS version: "snps, dwc-ufshcd-1.40a" "jedec, ufs-2.0" PCI based setup: tc-dwc-g210-pci --> tc-dwc-g210 --> ufshcd-dwc-pci --> ufshcd-dwc --> ufs The test chip type would be configured by a parameter to be passed in the kernel boot args: tc_type = 20 (20-bit) or tc_type = 40 (40-bit) Having this in mind the KConfig would be: "config SCSI_UFS_DWC_HOOKS bool config SCSI_UFS_DWC_PLAT tristate "DesignWare UFS controller platform glue driver" depends on SCSI_UFSHCD_PLATFORM select SCSI_UFS_DWC_HOOKS help This selects the DesignWare UFS host controller platform glue driver. Select this if you have a DesignWare UFS controller on Platform bus. If unsure, say N. config SCSI_UFS_DWC_PCI tristate "DesignWare UFS controller pci glue driver" depends on SCSI_UFSHCD_PCI select SCSI_UFS_DWC_HOOKS help This selects the DesignWare UFS host controller pci glue driver. Select this if you have a DesignWare UFS controller on pci bus. If unsure, say N. config SCSI_UFS_DWC_TC bool "Support for the Synopsys Test Chip" depends on SCSI_UFS_DWC_HOOKS && (SCSI_UFSHCD_PCI || SCSI_UFS_DWC_PLAT) ---help--- Synopsys Test Chip is a Phy for prototyping purposes. This selects the support for the Synopsys Test Chip. Select this if you have a Synopsys Test Chip. If unsure, say N." Agree with the approach? Thanks for the help. Joao -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
