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2023-12-08 01573e231f18eb2d99162747186f59511f56b64d

 kernel/Documentation/devicetree/bindings/slimbus/bus.txt
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@@ -32,6 +32,10 @@
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 	 	  Product Code, shall be in lower case hexadecimal with leading
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 		  zeroes suppressed
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+Optional property for SLIMbus child node if it is present:
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+- slim-ifc-dev	- Should be phandle to SLIMBus Interface device.
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+		  Required for devices which deal with streams.
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+
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 SLIMbus example for Qualcomm's slimbus manager component:
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 	slim@28080000 {
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@@ -43,8 +47,14 @@
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 		#address-cells = <2>;
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 		#size-cell = <0>;
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+		codec_ifd: ifd@0,0{
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+			compatible = "slim217,60";
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+			reg = <0 0>;
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+		};
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+
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 		codec: wcd9310@1,0{
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 			compatible = "slim217,60";
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 			reg = <1 0>;
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+			slim-ifc-dev  = <&codec_ifd>;
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 		};
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 	};