[v7,3/9] dt-bindings: soc: Add TmFifo binding for Mellanox BlueField SoC

Commit Message

Liming Sun Jan. 3, 2019, 7:17 p.m. UTC

Add devicetree bindings for the TmFifo which is found on Mellanox
BlueField SoCs.

Reviewed-by: Rob Herring <[e-mail]>
Reviewed-by: David Woods <[e-mail]>
Signed-off-by: Liming Sun <[e-mail]>
---
 .../devicetree/bindings/soc/mellanox/tmfifo.txt    | 23 ++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/soc/mellanox/tmfifo.txt

Patch

diff --git a/Documentation/devicetree/bindings/soc/mellanox/tmfifo.txt b/Documentation/devicetree/bindings/soc/mellanox/tmfifo.txt
new file mode 100644
index 0000000..8a13fa6
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/mellanox/tmfifo.txt
@@ -0,0 +1,23 @@ 
+* Mellanox BlueField SoC TmFifo
+
+BlueField TmFifo provides a shared FIFO between the target and the
+external host machine, which can be accessed by external host via
+USB or PCIe. In the current tmfifo driver, this FIFO has been demuxed
+to implement virtual console and network interface based on the virtio
+framework.
+
+Required properties:
+
+- compatible:	Should be "mellanox,bf-tmfifo"
+- reg:		Physical base address and length of Rx/Tx block
+- interrupts:	The interrupt number of Rx low water mark, Rx high water mark
+		Tx low water mark, Tx high water mark respectively.
+
+Example:
+
+tmfifo@800a20 {
+	compatible = "mellanox,bf-tmfifo";
+	reg = <0x00800a20 0x00000018
+	       0x00800a40 0x00000018>;
+	interrupts = <41, 42, 43, 44>;
+};