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dt-bindings: mux: add adi,adgs1408

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Adding documentation for adgs1408/1409 multiplexer. The bindings
follow the standard SPI and mux bindings and do not require any
additional custom properties.

Signed-off-by: Mircea Caprioru <mircea.caprioru@analog.com>
Reviewed-by: Rob Herring <robh@kernel.org>
[peda: reword idle-state to non-array for singular mux controller]
Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mircea Caprioru 2018-08-01 10:37:39 +02:00 committed by Greg Kroah-Hartman
parent 572086325c
commit 94aea0c6f7
2 changed files with 54 additions and 0 deletions
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48
Documentation/devicetree/bindings/mux/adi,adgs1408.txt Normal file
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@ -0,0 +1,48 @@
Bindings for Analog Devices ADGS1408/1409 8:1/Dual 4:1 Mux
Required properties:
- compatible : Should be one of
* "adi,adgs1408"
* "adi,adgs1409"
* Standard mux-controller bindings as described in mux-controller.txt
Optional properties for ADGS1408/1409:
- gpio-controller : if present, #gpio-cells is required.
- #gpio-cells : should be <2>
- First cell is the GPO line number, i.e. 0 to 3
for ADGS1408 and 0 to 4 for ADGS1409
- Second cell is used to specify active high (0)
or active low (1)
Optional properties:
- idle-state : if present, the state that the mux controller will have
when idle. The special state MUX_IDLE_AS_IS is the default and
MUX_IDLE_DISCONNECT is also supported.
States 0 through 7 correspond to signals S1 through S8 in the datasheet.
For ADGS1409 only states 0 to 3 are available.
Example:
/*
* One mux controller.
* Mux state set to idle as is (no idle-state declared)
*/
&spi0 {
mux: mux-controller@0 {
compatible = "adi,adgs1408";
reg = <0>;
spi-max-frequency = <1000000>;
#mux-control-cells = <0>;
};
}
adc-mux {
compatible = "io-channel-mux";
io-channels = <&adc 1>;
io-channel-names = "parent";
mux-controls = <&mux>;
channels = "out_a0", "out_a1", "test0", "test1",
"out_b0", "out_b1", "testb0", "testb1";
};

6
MAINTAINERS
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@ -810,6 +810,12 @@ L: linux-media@vger.kernel.org
S: Maintained
F: drivers/media/i2c/ad9389b*
ANALOG DEVICES INC ADGS1408 DRIVER
M: Mircea Caprioru <mircea.caprioru@analog.com>
S: Supported
F: drivers/mux/adgs1408.c
F: Documentation/devicetree/bindings/mux/adgs1408.txt
ANALOG DEVICES INC ADV7180 DRIVER
M: Lars-Peter Clausen <lars@metafoo.de>
L: linux-media@vger.kernel.org