diff mbox series

[anybus,v3,3/6] dt-bindings: anybus-bridge: document devicetree binding

Message ID 20181104155501.14767-4-TheSven73@googlemail.com
State Not Applicable, archived
Headers show
Series Support HMS Profinet Card over Anybus | expand

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Context Check Description
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Commit Message

Sven Van Asbroeck Nov. 4, 2018, 3:54 p.m. UTC 
From: Sven Van Asbroeck <svendev@arcx.com>

This patch adds devicetree binding documentation for the
Arcx anybus bridge.

Signed-off-by: Sven Van Asbroeck <svendev@arcx.com>
---
 .../bindings/misc/arcx,anybus-bridge.txt      | 34 +++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/misc/arcx,anybus-bridge.txt

Comments

Rob Herring (Arm) Nov. 5, 2018, 8:45 p.m. UTC | #1 
On Sun,  4 Nov 2018 10:54:58 -0500, thesven73@gmail.com wrote:
> From: Sven Van Asbroeck <svendev@arcx.com>
> 
> This patch adds devicetree binding documentation for the
> Arcx anybus bridge.
> 
> Signed-off-by: Sven Van Asbroeck <svendev@arcx.com>
> ---
>  .../bindings/misc/arcx,anybus-bridge.txt      | 34 +++++++++++++++++++
>  1 file changed, 34 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/misc/arcx,anybus-bridge.txt
> 

Reviewed-by: Rob Herring <robh@kernel.org>
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/misc/arcx,anybus-bridge.txt b/Documentation/devicetree/bindings/misc/arcx,anybus-bridge.txt
new file mode 100644
index 000000000000..cb801b7568b0
--- /dev/null
+++ b/Documentation/devicetree/bindings/misc/arcx,anybus-bridge.txt
@@ -0,0 +1,34 @@ 
+* Arcx anybus bridge
+
+This chip communicates with the SoC over a parallel bus. It is
+expected that its Device Tree node is specified as the child of a node
+corresponding to the parallel bus used for communication.
+
+Required properties:
+
+  - compatible : The following chip-specific string:
+        "arcx,anybus-bridge"
+
+  - reg : bus memory area where the cpld registers are located.
+
+  - reset-gpios : the GPIO pin connected to the reset line of the bridge.
+
+  - #reset-cells : Must be 1.
+	this bridge is a reset provider to its two embedded Anybus-S slots.
+
+Example of usage:
+
+This example places the bridge on top of the i.MX WEIM parallel bus, see:
+Documentation/devicetree/bindings/bus/imx-weim.txt
+
+&weim {
+	anybus_bridge: bridge@0,0 {
+		compatible = "arcx,anybus-bridge";
+		reg = <0 0 0x100>;
+		reset-gpios = <&gpio5 2 GPIO_ACTIVE_HIGH>;
+		#reset-cells = <1>;
+		/* fsl,weim-cs-timing is a i.MX WEIM bus specific property */
+		fsl,weim-cs-timing = <0x024400b1 0x00001010 0x20081100
+				0x00000000 0xa0000240 0x00000000>;
+	};
+};