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-rw-r--r--dts/Bindings/iio/adc/mt6577_auxadc.txt29
-rw-r--r--dts/Bindings/iio/adc/ti-adc12138.txt37
-rw-r--r--dts/Bindings/iio/adc/ti-adc161s626.txt16
3 files changed, 82 insertions, 0 deletions
diff --git a/dts/Bindings/iio/adc/mt6577_auxadc.txt b/dts/Bindings/iio/adc/mt6577_auxadc.txt
new file mode 100644
index 0000000000..68c45cbbe3
--- /dev/null
+++ b/dts/Bindings/iio/adc/mt6577_auxadc.txt
@@ -0,0 +1,29 @@
+* Mediatek AUXADC - Analog to Digital Converter on Mediatek mobile soc (mt65xx/mt81xx/mt27xx)
+===============
+
+The Auxiliary Analog/Digital Converter (AUXADC) is an ADC found
+in some Mediatek SoCs which among other things measures the temperatures
+in the SoC. It can be used directly with register accesses, but it is also
+used by thermal controller which reads the temperatures from the AUXADC
+directly via its own bus interface. See
+Documentation/devicetree/bindings/thermal/mediatek-thermal.txt
+for the Thermal Controller which holds a phandle to the AUXADC.
+
+Required properties:
+ - compatible: Should be one of:
+ - "mediatek,mt2701-auxadc": For MT2701 family of SoCs
+ - "mediatek,mt8173-auxadc": For MT8173 family of SoCs
+ - reg: Address range of the AUXADC unit.
+ - clocks: Should contain a clock specifier for each entry in clock-names
+ - clock-names: Should contain "main".
+ - #io-channel-cells: Should be 1, see ../iio-bindings.txt
+
+Example:
+
+auxadc: adc@11001000 {
+ compatible = "mediatek,mt2701-auxadc";
+ reg = <0 0x11001000 0 0x1000>;
+ clocks = <&pericfg CLK_PERI_AUXADC>;
+ clock-names = "main";
+ #io-channel-cells = <1>;
+};
diff --git a/dts/Bindings/iio/adc/ti-adc12138.txt b/dts/Bindings/iio/adc/ti-adc12138.txt
new file mode 100644
index 0000000000..049a1d36f0
--- /dev/null
+++ b/dts/Bindings/iio/adc/ti-adc12138.txt
@@ -0,0 +1,37 @@
+* Texas Instruments' ADC12130/ADC12132/ADC12138
+
+Required properties:
+ - compatible: Should be one of
+ * "ti,adc12130"
+ * "ti,adc12132"
+ * "ti,adc12138"
+ - reg: SPI chip select number for the device
+ - interrupts: Should contain interrupt for EOC (end of conversion)
+ - clocks: phandle to conversion clock input
+ - spi-max-frequency: Definision as per
+ Documentation/devicetree/bindings/spi/spi-bus.txt
+ - vref-p-supply: The regulator supply for positive analog voltage reference
+
+Optional properties:
+ - vref-n-supply: The regulator supply for negative analog voltage reference
+ (Note that this must not go below GND or exceed vref-p)
+ If not specified, this is assumed to be analog ground.
+ - ti,acquisition-time: The number of conversion clock periods for the S/H's
+ acquisition time. Should be one of 6, 10, 18, 34. If not specified,
+ default value of 10 is used.
+ For high source impedances, this value can be increased to 18 or 34.
+ For less ADC accuracy and/or slower CCLK frequencies this value may be
+ decreased to 6. See section 6.0 INPUT SOURCE RESISTANCE in the
+ datasheet for details.
+
+Example:
+adc@0 {
+ compatible = "ti,adc12138";
+ reg = <0>;
+ interrupts = <28 IRQ_TYPE_EDGE_RISING>;
+ interrupt-parent = <&gpio1>;
+ clocks = <&cclk>;
+ vref-p-supply = <&ldo4_reg>;
+ spi-max-frequency = <5000000>;
+ ti,acquisition-time = <6>;
+};
diff --git a/dts/Bindings/iio/adc/ti-adc161s626.txt b/dts/Bindings/iio/adc/ti-adc161s626.txt
new file mode 100644
index 0000000000..9ed2315781
--- /dev/null
+++ b/dts/Bindings/iio/adc/ti-adc161s626.txt
@@ -0,0 +1,16 @@
+* Texas Instruments ADC141S626 and ADC161S626 chips
+
+Required properties:
+ - compatible: Should be "ti,adc141s626" or "ti,adc161s626"
+ - reg: spi chip select number for the device
+
+Recommended properties:
+ - spi-max-frequency: Definition as per
+ Documentation/devicetree/bindings/spi/spi-bus.txt
+
+Example:
+adc@0 {
+ compatible = "ti,adc161s626";
+ reg = <0>;
+ spi-max-frequency = <4300000>;
+};