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b4fb3aa5b9
Support for this is being added to the driver but the original patch forgot to add this documentation. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Rob Herring <robh@kernel.org>
28 lines
1 KiB
Text
28 lines
1 KiB
Text
Device-tree bindings for gpio-based FSI master driver
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-----------------------------------------------------
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Required properties:
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- compatible = "fsi-master-gpio";
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- clock-gpios = <gpio-descriptor>; : GPIO for FSI clock
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- data-gpios = <gpio-descriptor>; : GPIO for FSI data signal
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Optional properties:
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- enable-gpios = <gpio-descriptor>; : GPIO for enable signal
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- trans-gpios = <gpio-descriptor>; : GPIO for voltage translator enable
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- mux-gpios = <gpio-descriptor>; : GPIO for pin multiplexing with other
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functions (eg, external FSI masters)
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- no-gpio-delays; : Don't add extra delays between GPIO
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accesses. This is useful when the HW
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GPIO block is running at a low enough
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frequency.
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Examples:
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fsi-master {
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compatible = "fsi-master-gpio", "fsi-master";
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clock-gpios = <&gpio 0>;
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data-gpios = <&gpio 1>;
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enable-gpios = <&gpio 2>;
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trans-gpios = <&gpio 3>;
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mux-gpios = <&gpio 4>;
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}
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