Re: [PATCH 6/6] Documentation/devicetree: Add FSI-attached I2C master dt bindings

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On 06/26/2017 08:06 PM, Jeremy Kerr wrote:
Hi Eddie,

+Required properties:
+ - compatible = "ibm,i2cm-fsi";
+ - reg = < address size >;		: The FSI CFAM address and address space
+					  size.
+ - #address-cells = <1>;		: Number of address cells in child nodes
+ - #size-cells = <0>;			: Number of size cells in child nodes.
+ - child nodes				: Nodes to describe ports off the I2C
+					  master.
+
+Child node required properties:
+ - reg = < port number >		: The port number on the I2C master.
+
+Examples:
+
+    i2cm@1800 {
+        compatible = "ibm,i2cm-fsi";
+        reg = < 0x1800 0x400 >;
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        port@0 {
+            reg = <0>;
+        };
+
+        port@1 {
+            reg = <1>;
+        };
+    };
Those child nodes represent the downstream i2c buses, and so also
contain the i2c slave devices, right? If so, you may want to document
that, and/or add a simple device to that example (say, an EEPROM).

Yes, good point, but the driver currently wouldn't do anything with that device information. It doesn't keep a list of populated devices on the bus or anything. Still worth adding them to the device tree?

Thanks,
Eddie


Cheers,


Jeremy


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