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1459c83703
Add a driver for SILabs 570, 571, 598, 599 programmable oscillators. The devices generate low-jitter clock signals and are reprogrammable via an I2C interface. Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com> Signed-off-by: Mike Turquette <mturquette@linaro.org>
40 lines
1.5 KiB
Plaintext
40 lines
1.5 KiB
Plaintext
Binding for Silicon Labs 570, 571, 598 and 599 programmable
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I2C clock generators.
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Reference
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This binding uses the common clock binding[1]. Details about the devices can be
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found in the data sheets[2][3].
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[1] Documentation/devicetree/bindings/clock/clock-bindings.txt
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[2] Si570/571 Data Sheet
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http://www.silabs.com/Support%20Documents/TechnicalDocs/si570.pdf
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[3] Si598/599 Data Sheet
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http://www.silabs.com/Support%20Documents/TechnicalDocs/si598-99.pdf
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Required properties:
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- compatible: Shall be one of "silabs,si570", "silabs,si571",
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"silabs,si598", "silabs,si599"
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- reg: I2C device address.
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- #clock-cells: From common clock bindings: Shall be 0.
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- factory-fout: Factory set default frequency. This frequency is part specific.
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The correct frequency for the part used has to be provided in
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order to generate the correct output frequencies. For more
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details, please refer to the data sheet.
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- temperature-stability: Temperature stability of the device in PPM. Should be
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one of: 7, 20, 50 or 100.
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Optional properties:
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- clock-output-names: From common clock bindings. Recommended to be "si570".
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- clock-frequency: Output frequency to generate. This defines the output
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frequency set during boot. It can be reprogrammed during
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runtime through the common clock framework.
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Example:
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si570: clock-generator@5d {
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#clock-cells = <0>;
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compatible = "silabs,si570";
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temperature-stability = <50>;
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reg = <0x5d>;
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factory-fout = <156250000>;
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};
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