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2023-12-08 01573e231f18eb2d99162747186f59511f56b64d

 kernel/Documentation/devicetree/bindings/spi/fsl-spi.txt
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@@ -15,9 +15,13 @@
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 - clock-frequency : input clock frequency to non FSL_SOC cores
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 Optional properties:
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-- gpios : specifies the gpio pins to be used for chipselects.
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+- cs-gpios : specifies the gpio pins to be used for chipselects.
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   The gpios will be referred to as reg = <index> in the SPI child nodes.
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   If unspecified, a single SPI device without a chip select can be used.
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+- fsl,spisel_boot : for the MPC8306 and MPC8309, specifies that the
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+  SPISEL_BOOT signal is used as chip select for a slave device. Use
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+  reg = <number of gpios> in the corresponding child node, i.e. 0 if
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+  the cs-gpios property is not present.
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 Example:
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 	spi@4c0 {
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@@ -27,8 +31,8 @@
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 		interrupts = <82 0>;
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 		interrupt-parent = <700>;
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 		mode = "cpu";
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-		gpios = <&gpio 18 1	// device reg=<0>
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-			 &gpio 19 1>;	// device reg=<1>
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+		cs-gpios = <&gpio 18 1		// device reg=<0>
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+			    &gpio 19 1>;	// device reg=<1>
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 	};
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