[PATCH anybus v1 2/4] dt-bindings: anybus-bridge: document devicetree binding.

Sven Van Asbroeck
2018-10-24T14:40:29Z

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

Signed-off-by: Sven Van Asbroeck <svendev@arcx.com>
---
.../bindings/mfd/arcx,anybus-bridge.txt | 37 +++++++++++++++++++
.../devicetree/bindings/vendor-prefixes.txt | 1 +
2 files changed, 38 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mfd/arcx,anybus-bridge.txt

diff --git a/Documentation/devicetree/bindings/mfd/arcx,anybus-bridge.txt b/Documentation/devicetree/bindings/mfd/arcx,anybus-bridge.txt
new file mode 100644
index 000000000000..3c0399c4ed45
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/arcx,anybus-bridge.txt
@@ -0,0 +1,37 @@
+* Arcx anybus bridge
+
+This chip communicates with the SoC over the WEIM bus. It is
+expected that its Device Tree node is specified as the child of a node
+corresponding to the WEIM bus used for communication.
+
+Required properties:
+
+ - compatible : The following chip-specific string:
+ "arcx,anybus-bridge"
+
+ - reg :
+ weim memory area where the cpld registers are located, followed by:
+ weim memory area of the first anybus-s slot, followed by:
+ weim memory area of the second anybus-s slot.
+
+ - enable-gpios : the gpio connected to the bridge's 'enable gpio'.
+
+ - pwms : the pwm connected to the bridge's 'pwm input'.
+
+ - irq-gpios : the gpios connected to the bridge's interrupt lines.
+ note that there is no need to provide the 'interrupts' property here.
+
+Example of usage:
+
+&weim {
+ bridge@0,0 {
+ compatible = "arcx,anybus-bridge";
+ reg = <0 0 0x100>, <0 0x400000 0x800>, <1 0x400000 0x800>;
+ fsl,weim-cs-timing = <0x024400b1 0x00001010 0x20081100
+ 0x00000000 0xa0000240 0x00000000>;
+ enable-gpios = <&gpio5 2 GPIO_ACTIVE_HIGH>;
+ pwms = <&pwm3 0 571>;
+ irq-gpios = <&gpio1 1 GPIO_ACTIVE_HIGH>,
+ <&gpio1 5 GPIO_ACTIVE_HIGH>;
+ };
+};
diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
index 2c3fc512e746..1bf07b20a8af 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.txt
+++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
@@ -35,6 +35,7 @@ aptina Aptina Imaging
arasan Arasan Chip Systems
archermind ArcherMind Technology (Nanjing) Co., Ltd.
arctic Arctic Sand
+arcx Arcx/Archronix Inc.
aries Aries Embedded GmbH
arm ARM Ltd.
armadeus ARMadeus Systems SARL
--
2.17.1