dt-bindings: Add qcom slimbus controller bindings

This patch add device tree bindings for Qualcomm slimbus controller.

Signed-off-by: Sagar Dharia <sdharia@codeaurora.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviwed-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/Documentation/devicetree/bindings/slimbus/slim-qcom-ctrl.txt b/Documentation/devicetree/bindings/slimbus/slim-qcom-ctrl.txt
new file mode 100644 (file)
index 0000000..922dcb8
--- /dev/null
+++ b/Documentation/devicetree/bindings/slimbus/slim-qcom-ctrl.txt
@@ -0,0 +1,39 @@
+Qualcomm SLIMbus controller
+This controller is used if applications processor driver controls SLIMbus
+master component.
+
+Required properties:
+
+ - #address-cells - refer to Documentation/devicetree/bindings/slimbus/bus.txt
+ - #size-cells - refer to Documentation/devicetree/bindings/slimbus/bus.txt
+
+ - reg : Offset and length of the register region(s) for the device
+ - reg-names : Register region name(s) referenced in reg above
+        Required register resource entries are:
+        "ctrl": Physical address of controller register blocks
+        "slew": required for "qcom,apq8064-slim" SOC.
+ - compatible : should be "qcom,<SOC-NAME>-slim" for SOC specific compatible
+               followed by "qcom,slim" for fallback.
+ - interrupts : Interrupt number used by this controller
+ - clocks : Interface and core clocks used by this SLIMbus controller
+ - clock-names : Required clock-name entries are:
+       "iface" : Interface clock for this controller
+       "core" : Interrupt for controller core's BAM
+
+Example:
+
+       slim@28080000 {
+               compatible = "qcom,apq8064-slim", "qcom,slim";
+               reg = <0x28080000 0x2000>, <0x80207C 4>;
+               reg-names = "ctrl", "slew";
+               interrupts = <0 33 0>;
+               clocks = <&lcc SLIMBUS_SRC>, <&lcc AUDIO_SLIMBUS_CLK>;
+               clock-names = "iface", "core";
+               #address-cells = <2>;
+               #size-cell = <0>;
+
+               wcd9310: audio-codec@1,0{
+                       compatible = "slim217,60";
+                       reg = <1 0>;
+               };
+       };