On Mon, Feb 15, 2016 at 03:25:13PM +0000, Joao Pinto wrote:
> This patch has the goal to add support for DesignWare UFS Controller
> specific operations and to add specific platform and pci drivers.
>
> Signed-off-by: Joao Pinto <jpinto@xxxxxxxxxxxx>
> ---
> Changes v7->v8 (Akinobu Mita):
> - DME sets were simplified for easier reading
> - CLK DIV default values definitions names were changed to match the
> register's name
> - New line added to dev_err and dev_info statements
> Changes v6->v7 (Arnd Bergmann):
> - Changed DT node name (to ufs only) and the memory address (to 0xd000000)
> - Removed CONFIG_PM from the PCI glue driver (pm.h already does this)
> - No other changes are necessary in ufshcd.c because of the link up notify
> function usage (it is simpler now)
> - Removed the PHY mentioning since the Test Chip is not a real PHY for real
> world usage, since it is a test chip for prototyping with a very specific
> usage
> - Added again the Test Chip 20-bit option
> Changes v5->v6:
> - Patch bad format fixed
> Changes v4->v5 (Akinobu Mita):
> - All functions used only locally in ufshcd-dwc are now declared as static
> - ufshcd_dwc_configuration() was removed in ufshcd-dwc and a notify
> function (ufshcd_dwc_link_startup_notify) was created to deal with the
> DWC specific init routines
> - 20-bit RMMI option was removed from Kconfig. Now if MPHY TC is selected
> and 40-bit is not then it assumes a 20-bit config
> Changes v3->v4 (Arnd Bergmann and Mark Rutland):
> - SCSI_UFS_DWC_HOOKS is now silent and selected by the SCSI_UFS_DWC_PLAT
> or SCSI_UFS_DWC_PCI
> - Compatibility string has the ufs core version for info purposes since
> the driver is capable of getting the controller version from its
> registers
> - Created ufs-dwc-pci glue driver with specific DWC data
> - MPHY configuration remains in the ufshcd-dwc since it is unipro
> attribute writting only not following the a linux phy framework logic
> Changes v2->v3 (Julian Calaby):
> - Implement a common DWC code to be used by the platform and pci glue
> drivers
> - Synopsys ID & Class added to the existing pci driver and specific DWC
> was also added to the pci driver
> Changes v1->v2 (Akinobu Mita):
> - Implement a platform driver that uses the existing UFS core driver
> - Add DWC specific code to the existing UFS core driver
>
> Documentation/devicetree/bindings/ufs/ufs-dwc.txt | 19 +
> MAINTAINERS | 6 +
> drivers/scsi/ufs/Kconfig | 51 +++
> drivers/scsi/ufs/Makefile | 3 +
> drivers/scsi/ufs/ufs-dwc-pci.c | 172 +++++++++
> drivers/scsi/ufs/ufs-dwc.c | 96 +++++
> drivers/scsi/ufs/ufshcd-dwc.c | 431 ++++++++++++++++++++++
> drivers/scsi/ufs/ufshcd-dwc.h | 18 +
> drivers/scsi/ufs/ufshci-dwc.h | 42 +++
> drivers/scsi/ufs/unipro.h | 39 ++
> 10 files changed, 877 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/ufs/ufs-dwc.txt
> create mode 100644 drivers/scsi/ufs/ufs-dwc-pci.c
> create mode 100644 drivers/scsi/ufs/ufs-dwc.c
> create mode 100644 drivers/scsi/ufs/ufshcd-dwc.c
> create mode 100644 drivers/scsi/ufs/ufshcd-dwc.h
> create mode 100644 drivers/scsi/ufs/ufshci-dwc.h
>
> diff --git a/Documentation/devicetree/bindings/ufs/ufs-dwc.txt b/Documentation/devicetree/bindings/ufs/ufs-dwc.txt
> new file mode 100644
> index 0000000..59e9822
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/ufs/ufs-dwc.txt
> @@ -0,0 +1,19 @@
> +* Universal Flash Storage (UFS) DesignWare Host Controller
> +
> +DWC_UFSHC nodes are defined to describe on-chip UFS host controllers.
> +Each UFS controller instance should have its own node.
> +
> +Required properties:
> +- compatible : compatible list must contain "snps,ufshcd-dwc" and should
> + also contain the JEDEC version of the controller:
> + "jedec,ufs-1.1"
> + "jedec,ufs-2.0"
As I said before, this needs to mention also requiring an SoC specific
compatible.
> +- reg : <registers mapping>
> +- interrupts : <interrupt mapping for UFS host controller IRQ>
> +
> +Example:
> + ufs@0xd0000000 {
Drop '0x'
> + compatible = "jedec,ufs-2.0", "snps,dwc-ufshcd";
This should be reversed. Most specific first.
> + reg = < 0xd0000000 0x10000 >;
> + interrupts = < 24 >;
> + };
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