[PATCH v1 2/6] dt-bindings: soc: microchip: add a property for system controller flash

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]


From: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>

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.

Signed-off-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>
 .../soc/microchip/microchip,mpfs-sys-controller.yaml   | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/Documentation/devicetree/bindings/soc/microchip/microchip,mpfs-sys-controller.yaml b/Documentation/devicetree/bindings/soc/microchip/microchip,mpfs-sys-controller.yaml
index 04ffee3a7c59..97a7cb74cbf9 100644
--- a/Documentation/devicetree/bindings/soc/microchip/microchip,mpfs-sys-controller.yaml
+++ b/Documentation/devicetree/bindings/soc/microchip/microchip,mpfs-sys-controller.yaml
@@ -26,6 +26,16 @@ properties:
     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.
   - compatible
   - mboxes

[Index of Archives]     [LM Sensors]     [Linux Sound]     [ALSA Users]     [ALSA Devel]     [Linux Audio Users]     [Linux Media]     [Kernel]     [Gimp]     [Yosemite News]     [Linux Media]

  Powered by Linux