dts: update to v4.10-rc1

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

2 files changed, 76 insertions, 0 deletions

diff --git a/dts/Bindings/iio/dac/dpot-dac.txt b/dts/Bindings/iio/dac/dpot-dac.txt
new file mode 100644
index 0000000000..fdf47a01bf
--- /dev/null
+++ b/dts/Bindings/iio/dac/dpot-dac.txt
@@ -0,0 +1,41 @@
+Bindings for DAC emulation using a digital potentiometer
+
+It is assumed that the dpot is used as a voltage divider between the
+current dpot wiper setting and the maximum resistance of the dpot. The
+divided voltage is provided by a vref regulator.
+
+                  .------.
+   .-----------.  |      |
+   | vref      |--'    .---.
+   | regulator |--.    |   |
+   '-----------'  |    | d |
+                  |    | p |
+                  |    | o |  wiper
+                  |    | t |<---------+
+                  |    |   |
+                  |    '---'       dac output voltage
+                  |      |
+                  '------+------------+
+
+Required properties:
+- compatible: Should be "dpot-dac"
+- vref-supply: The regulator supplying the voltage divider.
+- io-channels: Channel node of the dpot to be used for the voltage division.
+- io-channel-names: Should be "dpot".
+
+Example:
+
+	&i2c {
+		dpot: mcp4651-503@28 {
+			compatible = "microchip,mcp4651-503";
+			reg = <0x28>;
+			#io-channel-cells = <1>;
+		};
+	};
+
+	dac {
+		compatible = "dpot-dac";
+		vref-supply = <&reg_3v3>;
+		io-channels = <&dpot 0>;
+		io-channel-names = "dpot";
+	};
diff --git a/dts/Bindings/iio/dac/mcp4725.txt b/dts/Bindings/iio/dac/mcp4725.txt
new file mode 100644
index 0000000000..1bc6c093fb
--- /dev/null
+++ b/dts/Bindings/iio/dac/mcp4725.txt
@@ -0,0 +1,35 @@
+Microchip mcp4725 and mcp4726 DAC device driver
+
+Required properties:
+	- compatible: Must be "microchip,mcp4725" or "microchip,mcp4726"
+	- reg: Should contain the DAC I2C address
+	- vdd-supply: Phandle to the Vdd power supply. This supply is used as a
+	  voltage reference on mcp4725. It is used as a voltage reference on
+	  mcp4726 if there is no vref-supply specified.
+
+Optional properties (valid only for mcp4726):
+	- vref-supply: Optional phandle to the Vref power supply. Vref pin is
+	  used as a voltage reference when this supply is specified.
+	- microchip,vref-buffered: Boolean to enable buffering of the external
+	  Vref pin. This boolean is not valid without the vref-supply. Quoting
+	  the datasheet: This is offered in cases where the reference voltage
+	  does not have the current capability not to drop its voltage when
+	  connected to the internal resistor ladder circuit.
+
+Examples:
+
+	/* simple mcp4725 */
+	mcp4725@60 {
+		compatible = "microchip,mcp4725";
+		reg = <0x60>;
+		vdd-supply = <&vdac_vdd>;
+	};
+
+	/* mcp4726 with the buffered external reference voltage */
+	mcp4726@60 {
+		compatible = "microchip,mcp4726";
+		reg = <0x60>;
+		vdd-supply = <&vdac_vdd>;
+		vref-supply = <&vdac_vref>;
+		microchip,vref-buffered;
+	};