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This patch add support for Analog Devices (Linear Technology) LTC2634 Quad 12-/10-/8-Bit Rail-to-Rail DAC. The SPI functionality based on them from LTC2632 therefor add the definitions only and update the Kconfig. Signed-off-by: Chris Ruehl <chris.ruehl@gtsys.com.hk> Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
50 lines
1.2 KiB
Plaintext
50 lines
1.2 KiB
Plaintext
Linear Technology LTC2632/2634/2636 DAC
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Required properties:
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- compatible: Has to contain one of the following:
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lltc,ltc2632-l12
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lltc,ltc2632-l10
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lltc,ltc2632-l8
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lltc,ltc2632-h12
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lltc,ltc2632-h10
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lltc,ltc2632-h8
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lltc,ltc2634-l12
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lltc,ltc2634-l10
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lltc,ltc2634-l8
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lltc,ltc2634-h12
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lltc,ltc2634-h10
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lltc,ltc2634-h8
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lltc,ltc2636-l12
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lltc,ltc2636-l10
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lltc,ltc2636-l8
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lltc,ltc2636-h12
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lltc,ltc2636-h10
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lltc,ltc2636-h8
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Property rules described in Documentation/devicetree/bindings/spi/spi-bus.txt
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apply. In particular, "reg" and "spi-max-frequency" properties must be given.
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Optional properties:
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- vref-supply: Phandle to the external reference voltage supply. This should
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only be set if there is an external reference voltage connected to the VREF
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pin. If the property is not set the internal reference is used.
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Example:
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vref: regulator-vref {
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compatible = "regulator-fixed";
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regulator-name = "vref-ltc2632";
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regulator-min-microvolt = <1250000>;
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regulator-max-microvolt = <1250000>;
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regulator-always-on;
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};
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spi_master {
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dac: ltc2632@0 {
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compatible = "lltc,ltc2632-l12";
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reg = <0>; /* CS0 */
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spi-max-frequency = <1000000>;
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vref-supply = <&vref>; /* optional */
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};
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};
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