dt-bindings: fsi: Add optional chip-id to CFAMs (e13c542d) · Commits · 戴 / test

This represents a physical chip in the system and allows a stable numbering scheme to be passed to udev for userspace to recognize which chip is which. Signed-off-by:

Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by:

Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/fsi/fsi.txt

+5 −0

Original line number	Diff line number	Diff line
		@@ -83,6 +83,10 @@ addresses and sizes in the slave address space:
		#address-cells = <1>;
		#size-cells = <1>;

		Optionally, a slave can provide a global unique chip ID which is used to
		identify the physical location of the chip in a system specific way

		chip-id = <0>;

		FSI engines (devices)
		---------------------
		@@ -125,6 +129,7 @@ device tree if no extra platform information is required.
		reg = <0 0>;
		#address-cells = <1>;
		#size-cells = <1>;
		chip-id = <0>;

		/* FSI engine at 0xc00, using a single page. In this example,
		* it's an I2C master controller, so subnodes describe the

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