Commit 98d62e97 authored by Conor Dooley's avatar Conor Dooley
Browse files

dt-bindings: soc: microchip: add a property for system controller flash 



The system controller "shares" a SPI flash device with a QSPI controller
in the MSS. This flash is used to store FPGA bitstreams & other
metadata. IAP and Auto Upgrade both write images to this flash that the
System Controller will use to re-program the FPGA.

Add a phandle property signifying which flash device is connected to the
system controller.

Reviewed-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarConor Dooley <conor.dooley@microchip.com>
parent a066f906

Documentation/devicetree/bindings/soc/microchip/microchip,mpfs-sys-controller.yaml

+10 −0
Original line number Diff line number Diff line
@@ -26,6 +26,16 @@ properties: 
  compatible:

    const: microchip,mpfs-sys-controller



  microchip,bitstream-flash:

    $ref: /schemas/types.yaml#/definitions/phandle

    description:

      The SPI flash connected to the system controller's QSPI controller.

      The system controller may retrieve FPGA bitstreams from this flash to

      perform In-Application Programming (IAP) or during device initialisation

      for Auto Update. The MSS and system controller have separate QSPI

      controllers and this flash is connected to both. Software running in the

      MSS can write bitstreams to the flash.



required:

  - compatible

  - mboxes