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-rw-r--r--dts/Bindings/iio/adc/amlogic,meson-saradc.txt2
-rw-r--r--dts/Bindings/iio/adc/renesas,gyroadc.txt9
-rw-r--r--dts/Bindings/iio/adc/st,stm32-adc.txt28
-rw-r--r--dts/Bindings/iio/adc/ti-adc084s021.txt19
-rw-r--r--dts/Bindings/iio/adc/ti-adc108s102.txt18
-rw-r--r--dts/Bindings/iio/imu/st_lsm6dsx.txt3
-rw-r--r--dts/Bindings/iio/multiplexer/io-channel-mux.txt39
-rw-r--r--dts/Bindings/iio/proximity/as3935.txt2
8 files changed, 107 insertions, 13 deletions
diff --git a/dts/Bindings/iio/adc/amlogic,meson-saradc.txt b/dts/Bindings/iio/adc/amlogic,meson-saradc.txt
index 047189192a..f413e82c8b 100644
--- a/dts/Bindings/iio/adc/amlogic,meson-saradc.txt
+++ b/dts/Bindings/iio/adc/amlogic,meson-saradc.txt
@@ -2,6 +2,8 @@
Required properties:
- compatible: depending on the SoC this should be one of:
+ - "amlogic,meson8-saradc" for Meson8
+ - "amlogic,meson8b-saradc" for Meson8b
- "amlogic,meson-gxbb-saradc" for GXBB
- "amlogic,meson-gxl-saradc" for GXL
- "amlogic,meson-gxm-saradc" for GXM
diff --git a/dts/Bindings/iio/adc/renesas,gyroadc.txt b/dts/Bindings/iio/adc/renesas,gyroadc.txt
index f5b0adae60..df5b9f2ad8 100644
--- a/dts/Bindings/iio/adc/renesas,gyroadc.txt
+++ b/dts/Bindings/iio/adc/renesas,gyroadc.txt
@@ -1,4 +1,4 @@
-* Renesas RCar GyroADC device driver
+* Renesas R-Car GyroADC device driver
The GyroADC block is a reduced SPI block with up to 8 chipselect lines,
which supports the SPI protocol of a selected few SPI ADCs. The SPI ADCs
@@ -16,8 +16,7 @@ Required properties:
- clocks: References to all the clocks specified in the clock-names
property as specified in
Documentation/devicetree/bindings/clock/clock-bindings.txt.
-- clock-names: Shall contain "fck" and "if". The "fck" is the GyroADC block
- clock, the "if" is the interface clock.
+- clock-names: Shall contain "fck". The "fck" is the GyroADC block clock.
- power-domains: Must contain a reference to the PM domain, if available.
- #address-cells: Should be <1> (setting for the subnodes) for all ADCs
except for "fujitsu,mb88101a". Should be <0> (setting for
@@ -75,8 +74,8 @@ Example:
adc@e6e54000 {
compatible = "renesas,r8a7791-gyroadc", "renesas,rcar-gyroadc";
reg = <0 0xe6e54000 0 64>;
- clocks = <&mstp9_clks R8A7791_CLK_GYROADC>, <&clk_65m>;
- clock-names = "fck", "if";
+ clocks = <&mstp9_clks R8A7791_CLK_GYROADC>;
+ clock-names = "fck";
power-domains = <&sysc R8A7791_PD_ALWAYS_ON>;
pinctrl-0 = <&adc_pins>;
diff --git a/dts/Bindings/iio/adc/st,stm32-adc.txt b/dts/Bindings/iio/adc/st,stm32-adc.txt
index e35f9f1b32..8310073f14 100644
--- a/dts/Bindings/iio/adc/st,stm32-adc.txt
+++ b/dts/Bindings/iio/adc/st,stm32-adc.txt
@@ -21,11 +21,19 @@ own configurable sequence and trigger:
Contents of a stm32 adc root node:
-----------------------------------
Required properties:
-- compatible: Should be "st,stm32f4-adc-core".
+- compatible: Should be one of:
+ "st,stm32f4-adc-core"
+ "st,stm32h7-adc-core"
- reg: Offset and length of the ADC block register set.
- interrupts: Must contain the interrupt for ADC block.
-- clocks: Clock for the analog circuitry (common to all ADCs).
-- clock-names: Must be "adc".
+- clocks: Core can use up to two clocks, depending on part used:
+ - "adc" clock: for the analog circuitry, common to all ADCs.
+ It's required on stm32f4.
+ It's optional on stm32h7.
+ - "bus" clock: for registers access, common to all ADCs.
+ It's not present on stm32f4.
+ It's required on stm32h7.
+- clock-names: Must be "adc" and/or "bus" depending on part used.
- interrupt-controller: Identifies the controller node as interrupt-parent
- vref-supply: Phandle to the vref input analog reference voltage.
- #interrupt-cells = <1>;
@@ -42,14 +50,18 @@ An ADC block node should contain at least one subnode, representing an
ADC instance available on the machine.
Required properties:
-- compatible: Should be "st,stm32f4-adc".
+- compatible: Should be one of:
+ "st,stm32f4-adc"
+ "st,stm32h7-adc"
- reg: Offset of ADC instance in ADC block (e.g. may be 0x0, 0x100, 0x200).
-- clocks: Input clock private to this ADC instance.
+- clocks: Input clock private to this ADC instance. It's required only on
+ stm32f4, that has per instance clock input for registers access.
- interrupt-parent: Phandle to the parent interrupt controller.
- interrupts: IRQ Line for the ADC (e.g. may be 0 for adc@0, 1 for adc@100 or
2 for adc@200).
- st,adc-channels: List of single-ended channels muxed for this ADC.
- It can have up to 16 channels, numbered from 0 to 15 (resp. for in0..in15).
+ It can have up to 16 channels on stm32f4 or 20 channels on stm32h7, numbered
+ from 0 to 15 or 19 (resp. for in0..in15 or in0..in19).
- #io-channel-cells = <1>: See the IIO bindings section "IIO consumers" in
Documentation/devicetree/bindings/iio/iio-bindings.txt
@@ -58,7 +70,9 @@ Optional properties:
See ../../dma/dma.txt for details.
- dma-names: Must be "rx" when dmas property is being used.
- assigned-resolution-bits: Resolution (bits) to use for conversions. Must
- match device available resolutions (e.g. can be 6, 8, 10 or 12 on stm32f4).
+ match device available resolutions:
+ * can be 6, 8, 10 or 12 on stm32f4
+ * can be 8, 10, 12, 14 or 16 on stm32h7
Default is maximum resolution if unset.
Example:
diff --git a/dts/Bindings/iio/adc/ti-adc084s021.txt b/dts/Bindings/iio/adc/ti-adc084s021.txt
new file mode 100644
index 0000000000..4259e50620
--- /dev/null
+++ b/dts/Bindings/iio/adc/ti-adc084s021.txt
@@ -0,0 +1,19 @@
+* Texas Instruments' ADC084S021
+
+Required properties:
+ - compatible : Must be "ti,adc084s021"
+ - reg : SPI chip select number for the device
+ - vref-supply : The regulator supply for ADC reference voltage
+ - spi-cpol : Per spi-bus bindings
+ - spi-cpha : Per spi-bus bindings
+ - spi-max-frequency : Per spi-bus bindings
+
+Example:
+adc@0 {
+ compatible = "ti,adc084s021";
+ reg = <0>;
+ vref-supply = <&adc_vref>;
+ spi-cpol;
+ spi-cpha;
+ spi-max-frequency = <16000000>;
+};
diff --git a/dts/Bindings/iio/adc/ti-adc108s102.txt b/dts/Bindings/iio/adc/ti-adc108s102.txt
new file mode 100644
index 0000000000..bbbbb4a9f5
--- /dev/null
+++ b/dts/Bindings/iio/adc/ti-adc108s102.txt
@@ -0,0 +1,18 @@
+* Texas Instruments' ADC108S102 and ADC128S102 ADC chip
+
+Required properties:
+ - compatible: Should be "ti,adc108s102"
+ - reg: spi chip select number for the device
+ - vref-supply: The regulator supply for ADC reference voltage
+
+Recommended properties:
+ - spi-max-frequency: Definition as per
+ Documentation/devicetree/bindings/spi/spi-bus.txt
+
+Example:
+adc@0 {
+ compatible = "ti,adc108s102";
+ reg = <0>;
+ vref-supply = <&vdd_supply>;
+ spi-max-frequency = <1000000>;
+};
diff --git a/dts/Bindings/iio/imu/st_lsm6dsx.txt b/dts/Bindings/iio/imu/st_lsm6dsx.txt
index 8305fb05ff..6f28ff55f3 100644
--- a/dts/Bindings/iio/imu/st_lsm6dsx.txt
+++ b/dts/Bindings/iio/imu/st_lsm6dsx.txt
@@ -13,7 +13,8 @@ Optional properties:
"data ready" (valid values: 1 or 2).
- interrupt-parent: should be the phandle for the interrupt controller
- interrupts: interrupt mapping for IRQ. It should be configured with
- flags IRQ_TYPE_LEVEL_HIGH or IRQ_TYPE_EDGE_RISING.
+ flags IRQ_TYPE_LEVEL_HIGH, IRQ_TYPE_EDGE_RISING, IRQ_TYPE_LEVEL_LOW or
+ IRQ_TYPE_EDGE_FALLING.
Refer to interrupt-controller/interrupts.txt for generic interrupt
client node bindings.
diff --git a/dts/Bindings/iio/multiplexer/io-channel-mux.txt b/dts/Bindings/iio/multiplexer/io-channel-mux.txt
new file mode 100644
index 0000000000..c827940025
--- /dev/null
+++ b/dts/Bindings/iio/multiplexer/io-channel-mux.txt
@@ -0,0 +1,39 @@
+I/O channel multiplexer bindings
+
+If a multiplexer is used to select which hardware signal is fed to
+e.g. an ADC channel, these bindings describe that situation.
+
+Required properties:
+- compatible : "io-channel-mux"
+- io-channels : Channel node of the parent channel that has multiplexed
+ input.
+- io-channel-names : Should be "parent".
+- #address-cells = <1>;
+- #size-cells = <0>;
+- mux-controls : Mux controller node to use for operating the mux
+- channels : List of strings, labeling the mux controller states.
+
+For each non-empty string in the channels property, an io-channel will
+be created. The number of this io-channel is the same as the index into
+the list of strings in the channels property, and also matches the mux
+controller state. The mux controller state is described in
+../mux/mux-controller.txt
+
+Example:
+ mux: mux-controller {
+ compatible = "mux-gpio";
+ #mux-control-cells = <0>;
+
+ mux-gpios = <&pioA 0 GPIO_ACTIVE_HIGH>,
+ <&pioA 1 GPIO_ACTIVE_HIGH>;
+ };
+
+ adc-mux {
+ compatible = "io-channel-mux";
+ io-channels = <&adc 0>;
+ io-channel-names = "parent";
+
+ mux-controls = <&mux>;
+
+ channels = "sync", "in", "system-regulator";
+ };
diff --git a/dts/Bindings/iio/proximity/as3935.txt b/dts/Bindings/iio/proximity/as3935.txt
index ae23dd8da7..38d74314b7 100644
--- a/dts/Bindings/iio/proximity/as3935.txt
+++ b/dts/Bindings/iio/proximity/as3935.txt
@@ -3,6 +3,7 @@ Austrian Microsystems AS3935 Franklin lightning sensor device driver
Required properties:
- compatible: must be "ams,as3935"
- reg: SPI chip select number for the device
+ - spi-max-frequency: specifies maximum SPI clock frequency
- spi-cpha: SPI Mode 1. Refer to spi/spi-bus.txt for generic SPI
slave node bindings.
- interrupt-parent : should be the phandle for the interrupt controller
@@ -21,6 +22,7 @@ Example:
as3935@0 {
compatible = "ams,as3935";
reg = <0>;
+ spi-max-frequency = <400000>;
spi-cpha;
interrupt-parent = <&gpio1>;
interrupts = <16 1>;