Merge tag 'iio-for-5.11a' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

First set of new device support, features and cleanups for IIO in the 5.11 cycle

Usual mixed bag of new drivers / device support + cleanups etc with the
addition of a fairly big set of yaml conversions.

Txt to yaml format conversions.
In some cases dropped separate binding and moved to trivial devices (drop).

Listed by manufacturer
  - dht11 temperature(drop)
  - adi,ad2s90 adi,ad5272 adi,ad5592r adi,ad5758 adi,ad5933 adi,ad7303
    adi,adis16480 adi,adf4350
  - ams,as3935
  - asahi-kasei,ak8974
  - atmel,sama5d2-adc
  - avago,apds9300 avago,apds9960
  - bosch,bma180 bosch,bmc150_magn bosch,bme680 bosch,bmg180
  - brcm,iproc-static-adc
  - capella,cm36651
  - domintech,dmard06(drop)
  - fsl,mag3110 fsl,mma8452 fsl,vf610-dac
  - hoperf,hp03
  - honeywell,hmc5843
  - kionix,kxcjk1013
  - maxim,ds1803(drop) maxim,ds4424 maxim,max30100 maxim,max30102
    maxim,max31856 maxim,max31855k maxim,max44009
    maxim,max5481 maxim,max5821
  - meas,htu21(drop) meas,ms5367(drop) meas,ms5611 meas,tsys01(drop)
  - mediatek,mt2701-auxadc
  - melexis,mlx90614 melexis,mlx90632
  - memsic,mmc35240(drop)
  - microchip,mcp41010 microchip,mcp4131 microchip,mcp4725
  - murata,zap2326
  - nxp,fxas21002c nxp,lpc1850-dac
  - pni,rm3100
  - qcom,pm8018-adc qcom,spmi-iadc
  - renesas,isl29501 renesas,rcar-gyroadc
  - samsung,sensorhub-rinato
  - sensiron,sgp30
  - sentech,sx9500
  - sharp,gp2ap020a00f
  - st,hts221 st,lsm6dsx st,st-sensors(many!) st,uvis25 st,vcl53l0x st,vl6180
  - ti,adc084s021 ti,ads124s08
    ti,dac5571 ti,dac7311 ti,dac7512 ti,dac7612
    ti,hdc1000(drop) ti,palmas-gpadc ti,opt3001 ti,tmp07
  - upisemi,us51882
  - vishay,vcnl4035
  - x-powers,axp209

New device support
* adi,ad5685
  - Add support for AD5338R dual output 10-bit DAC
  - Add DT-binding doc.
* mediatek,mt6360
  - New driver for this SoC ADC with bindings and using new channel label
    support in the IIO core.
* st,lsm6dsx
  - Add support for LSM6DST

Core:
* Add "label" to device channels, provided via a new core callback. Including
  DT docs for when that is the source, and ABI docs.
* Add devm_iio_triggered_buffer_setup_ext to take extra attributes.
* dmaengine, unwrap use of iio_buffer_set_attrs()
* Drop iio_buffer_set_attrs()
* Centralize ioctl call handling. Later fix to ensure -EINVAL returned if
  no handler has run.
* Fix an issue with IIO_VAL_FRACTIONAL and negative values - doesn't affect
  any known existing drivers, but will impact a future one.
* kernel-doc fix in trigger.h
* file-ops ordering cleanup

Features
* semtech,sx9310
  - Add control of hardware gain, proximity thresholds, hysteresis and
    debounce.
  - Increase what information on hardware configuration can be provided
    via DT.

Cleanup and minor features
* adi,ad5685
  - Add of_match_table
* adi,ad7292
  - Drop pointless spi_set_drvdata() call
* adi,ad7298
  - Drop platform data and tidy up external reference config.
* adi,ad7303
  - Drop platform data handling as unused.
* adi,ad7768
  - Add new label attribute for channels provided from dt.
* adi,ad7887
  - devm_ usage in probe simplifying remove and error handling.
* adi,adis16201
  - Drop pointless spi_set_drvdata() call
* adi,adis16209
  - Drop pointless spi_set_drvdata() call
* adi,adis16240
  - White space fixup
* adi,adxl372
  - use new devm_iio_triggered-buffer_setup_ext()
* amlogic,meson-saradc
  - Drop pointless semicolon.
* amstaos,tsl2563
  - Put back i2c_device_id table as needed for greybus probing.
* atmel,at91_adc
  - Use of_device_get_match_data() instead of open coding it.
  - Constify some driver data
  - Add KCONFIG dep on CONFIG_OF and drop of_match_ptr()
  - Drop platform data as mostly dead code.
  - Tidy up reference voltage logic
* atmel-sama5d2
  - Drop a pointless semicolon
  - Merge buffer and trigger init into a separate function
  - Use new devm_iio_triggered_buff_setup_ext()
* avago,apds9960
  - Drop a pointless semicolon
* bosch,bmc150
  - Drop a pointless semicolon
  - Use new iio_triggered_buffer_setup_ext()
* bosch,bmp280
  - Drop a pointless semicolon
* fsl,mma8452
  - Constification
* (google),cros_ec
  - Use new devm_iio_triggered_buffer_setup_ext()
* hid-sensors
  - Use new iio_triggered_buffer_setup_ext()
* ingenic,adc
  - Drop a pointless semicolon
* invensense,icm426xx
  - Fix MAINTAINERS entry missing :
* mediatek,mt6577_audxac
  - Add binding doc for mt8516 compatible with mt8173
* motorola,cpcap-adc
  - Fix an implicit fallthrough marking that clang needs to avoid warning.
* samsung,exynos-adc
  - Stop relying on users counter form input device in ISR.
* st,lsm6dsx
  - add vdd and vddio regulator control (including binding update)
* st,stm32-adc
  - Tidy up code for dma transfers.
  - Adapt clock duty cycle for proper functioning. Note no known problems
    with existing boards.
* st,vl53l0x-i2c
  - Put back i2c_device_id table as needed for greybus probing.
* vishay,vcnl4035
  - Put back i2c_device_id table as needed for greybus probing.

* tag 'iio-for-5.11a' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (126 commits)
  dt-bindings:iio:adc:x-powers,axp209-adc: txt to yaml conversion
  dt-bindings:iio:adc:renesas,rcar-gyroadc: txt to yaml conversion.
  dt-bindings:iio:adc:atmel,sama5d2-adc: txt to yaml conversion
  dt-bindings:iio:magnetometer:pni,rm3100: txt to yaml conversion.
  dt-bindings:iio:magnetometer:honeywell,hmc5843: txt to yaml format conversion
  dt-bindings:iio:magnetometer:bosch,bmc150_magn: txt to yaml conversion.
  dt-bindings:iio:magnetometer:asahi-kasei,ak8974: txt to yaml format conversion
  dt-bindings:iio:magnetometer:fsl,mag3110: txt to yaml conversion
  dt-bindings:iio:light:st,vl6180: txt to yaml format conversion.
  dt-bindings:iio:light:vishay,vcnl4035: txt to yaml conversion
  dt-bindings:iio:light:st,uvis25: txt to yaml conversion for this UV sensor
  dt-bindings:iio:light:upisemi,us51882: txt to yaml conversion.
  dt-bindings:iio:light:ti,opt3001: txt to yaml conversion
  dt-bindings:iio:light:maxim,max44009: txt to yaml conversion.
  dt-bindings:iio:light:sharp,gp2ap020a00f: txt to yaml conversion.
  dt-bindings:iio:light:capella,cm36651: txt to yaml conversion.
  dt-bindings:iio:light:avago,apds9960: txt to yaml conversion
  dt-bindings:iio:light:avago,apds9300: txt to yaml conversion.
  dt-bindings:iio:imu:st,lsm6dsx: txt to yaml conversion
  dt-bindings:iio:imu:adi,adis16480: txt to yaml conversion
  ...

12 files changed, 439 insertions, 215 deletions

diff --git a/Documentation/devicetree/bindings/iio/adc/adc.txt b/Documentation/devicetree/bindings/iio/adc/adc.txt
index 5bbaa330a250..4b37575bbddc 100644
--- a/Documentation/devicetree/bindings/iio/adc/adc.txt
+++ b/Documentation/devicetree/bindings/iio/adc/adc.txt
@@ -5,18 +5,24 @@ Optional properties for child nodes:
 - diff-channels : Differential channels muxed for this ADC. The first value
 		specifies the positive input pin, the second value the negative
 		input pin.
+- reg: The channel number.
+- label: Unique name to identify which channel this is.
 
 Example:
 	adc@0 {
 		compatible = "some,adc";
 		...
 		channel@0 {
+			reg = <0>;
+			label = "channel_0_name";
 			bipolar;
 			diff-channels = <0 1>;
 			...
 		};
 
 		channel@1 {
+			reg = <1>;
+			label = "channel_1_name";
 			diff-channels = <2 3>;
 			...
 		};
diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7768-1.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7768-1.yaml
index 8f32800fe5b7..924477dfb833 100644
--- a/Documentation/devicetree/bindings/iio/adc/adi,ad7768-1.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7768-1.yaml
@@ -29,6 +29,12 @@ properties:
   interrupts:
     maxItems: 1
 
+  '#address-cells':
+    const: 1
+
+  '#size-cells':
+    const: 0
+
   vref-supply:
     description:
       ADC reference voltage supply
@@ -62,6 +68,24 @@ required:
   - spi-cpha
   - adi,sync-in-gpios
 
+patternProperties:
+  "^channel@([0-9]|1[0-5])$":
+    type: object
+    description: |
+      Represents the external channels which are connected to the device.
+
+    properties:
+      reg:
+        description: |
+          The channel number.
+
+      label:
+        description: |
+          Unique name to identify which channel this is.
+    required:
+      - reg
+    additionalProperties: false
+
 additionalProperties: false
 
 examples:
@@ -85,6 +109,14 @@ examples:
             reset-gpios = <&gpio 27 GPIO_ACTIVE_LOW>;
             clocks = <&ad7768_mclk>;
             clock-names = "mclk";
+
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            channel@0 {
+                reg = <0>;
+                label = "channel_0";
+            };
         };
     };
 ...
diff --git a/Documentation/devicetree/bindings/iio/adc/at91-sama5d2_adc.txt b/Documentation/devicetree/bindings/iio/adc/at91-sama5d2_adc.txt
deleted file mode 100644
index 07c59f301b31..000000000000
--- a/Documentation/devicetree/bindings/iio/adc/at91-sama5d2_adc.txt
+++ /dev/null
@@ -1,50 +0,0 @@
-* AT91 SAMA5D2 Analog to Digital Converter (ADC)
-
-Required properties:
-  - compatible: Should be "atmel,sama5d2-adc" or "microchip,sam9x60-adc".
-  - reg: Should contain ADC registers location and length.
-  - interrupts: Should contain the IRQ line for the ADC.
-  - clocks: phandle to device clock.
-  - clock-names: Must be "adc_clk".
-  - vref-supply: Supply used as reference for conversions.
-  - vddana-supply: Supply for the adc device.
-  - atmel,min-sample-rate-hz: Minimum sampling rate, it depends on SoC.
-  - atmel,max-sample-rate-hz: Maximum sampling rate, it depends on SoC.
-  - atmel,startup-time-ms: Startup time expressed in ms, it depends on SoC.
-  - atmel,trigger-edge-type: One of possible edge types for the ADTRG hardware
-  trigger pin. When the specific edge type is detected, the conversion will
-  start. Possible values are rising, falling, or both.
-  This property uses the IRQ edge types values: IRQ_TYPE_EDGE_RISING ,
-  IRQ_TYPE_EDGE_FALLING or IRQ_TYPE_EDGE_BOTH
-
-Optional properties:
-  - dmas: Phandle to dma channel for the ADC.
-  - dma-names: Must be "rx" when dmas property is being used.
-  See ../../dma/dma.txt for details.
-  - #io-channel-cells: in case consumer drivers are attached, this must be 1.
-  See <Documentation/devicetree/bindings/iio/iio-bindings.txt> for details.
-
-Properties for consumer drivers:
-  - Consumer drivers can be connected to this producer device, as specified
-  in <Documentation/devicetree/bindings/iio/iio-bindings.txt>
-  - Channels exposed are specified in:
-  <dt-bindings/iio/adc/at91-sama5d2_adc.txt>
-
-Example:
-
-adc: adc@fc030000 {
-	compatible = "atmel,sama5d2-adc";
-	reg = <0xfc030000 0x100>;
-	interrupts = <40 IRQ_TYPE_LEVEL_HIGH 7>;
-	clocks = <&adc_clk>;
-	clock-names = "adc_clk";
-	atmel,min-sample-rate-hz = <200000>;
-	atmel,max-sample-rate-hz = <20000000>;
-	atmel,startup-time-ms = <4>;
-	vddana-supply = <&vdd_3v3_lp_reg>;
-	vref-supply = <&vdd_3v3_lp_reg>;
-	atmel,trigger-edge-type = <IRQ_TYPE_EDGE_BOTH>;
-	dmas = <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) | AT91_XDMAC_DT_PERID(25))>;
-	dma-names = "rx";
-	#io-channel-cells = <1>;
-}
diff --git a/Documentation/devicetree/bindings/iio/adc/atmel,sama5d2-adc.yaml b/Documentation/devicetree/bindings/iio/adc/atmel,sama5d2-adc.yaml
new file mode 100644
index 000000000000..79c13b408eda
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/atmel,sama5d2-adc.yaml
@@ -0,0 +1,101 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/atmel,sama5d2-adc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: AT91 SAMA5D2 Analog to Digital Converter (ADC)
+
+maintainers:
+  - Ludovic Desroches <ludovic.desroches@atmel.com>
+  - Eugen Hristev <eugen.hristev@microchip.com>
+
+properties:
+  compatible:
+    enum:
+      - atmel,sama5d2-adc
+      - microchip,sam9x60-adc
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    const: adc_clk
+
+  vref-supply: true
+  vddana-supply: true
+
+  atmel,min-sample-rate-hz:
+    description: Minimum sampling rate, it depends on SoC.
+
+  atmel,max-sample-rate-hz:
+    description: Maximum sampling rate, it depends on SoC.
+
+  atmel,startup-time-ms:
+    description: Startup time expressed in ms, it depends on SoC.
+
+  atmel,trigger-edge-type:
+    $ref: '/schemas/types.yaml#/definitions/uint32'
+    description:
+      One of possible edge types for the ADTRG hardware trigger pin.
+      When the specific edge type is detected, the conversion will
+      start. Should be one of IRQ_TYPE_EDGE_RISING, IRQ_TYPE_EDGE_FALLING
+      or IRQ_TYPE_EDGE_BOTH.
+    enum: [1, 2, 3]
+
+  dmas:
+    maxItems: 1
+
+  dma-names:
+    const: rx
+
+  "#io-channel-cells":
+    const: 1
+
+additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+  - vref-supply
+  - vddana-supply
+  - atmel,min-sample-rate-hz
+  - atmel,max-sample-rate-hz
+  - atmel,startup-time-ms
+  - atmel,trigger-edge-type
+
+examples:
+  - |
+    #include <dt-bindings/dma/at91.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+    soc {
+        #address-cells = <1>;
+        #size-cells = <1>;
+
+        adc@fc030000 {
+            compatible = "atmel,sama5d2-adc";
+            reg = <0xfc030000 0x100>;
+            interrupts = <40 IRQ_TYPE_LEVEL_HIGH 7>;
+            clocks = <&adc_clk>;
+            clock-names = "adc_clk";
+            atmel,min-sample-rate-hz = <200000>;
+            atmel,max-sample-rate-hz = <20000000>;
+            atmel,startup-time-ms = <4>;
+            vddana-supply = <&vdd_3v3_lp_reg>;
+            vref-supply = <&vdd_3v3_lp_reg>;
+            atmel,trigger-edge-type = <IRQ_TYPE_EDGE_BOTH>;
+            dmas = <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) | AT91_XDMAC_DT_PERID(25))>;
+            dma-names = "rx";
+            #io-channel-cells = <1>;
+        };
+    };
+...
diff --git a/Documentation/devicetree/bindings/iio/adc/axp20x_adc.txt b/Documentation/devicetree/bindings/iio/adc/axp20x_adc.txt
deleted file mode 100644
index 7a6313913923..000000000000
--- a/Documentation/devicetree/bindings/iio/adc/axp20x_adc.txt
+++ /dev/null
@@ -1,48 +0,0 @@
-* X-Powers AXP ADC bindings
-
-Required properties:
-  - compatible: should be one of:
-    - "x-powers,axp209-adc",
-    - "x-powers,axp221-adc",
-    - "x-powers,axp813-adc",
-  - #io-channel-cells: should be 1,
-
-Example:
-
-&axp22x {
-	adc {
-		compatible = "x-powers,axp221-adc";
-		#io-channel-cells = <1>;
-	};
-};
-
-ADC channels and their indexes per variant:
-
-AXP209
-------
- 0 | acin_v
- 1 | acin_i
- 2 | vbus_v
- 3 | vbus_i
- 4 | pmic_temp
- 5 | gpio0_v
- 6 | gpio1_v
- 7 | ipsout_v
- 8 | batt_v
- 9 | batt_chrg_i
-10 | batt_dischrg_i
-
-AXP22x
-------
- 0 | pmic_temp
- 1 | batt_v
- 2 | batt_chrg_i
- 3 | batt_dischrg_i
-
-AXP813
-------
- 0 | pmic_temp
- 1 | gpio0_v
- 2 | batt_v
- 3 | batt_chrg_i
- 4 | batt_dischrg_i
diff --git a/Documentation/devicetree/bindings/iio/adc/mediatek,mt6360-adc.yaml b/Documentation/devicetree/bindings/iio/adc/mediatek,mt6360-adc.yaml
new file mode 100644
index 000000000000..db4e3613c104
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/mediatek,mt6360-adc.yaml
@@ -0,0 +1,31 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/mediatek,mt6360-adc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Mediatek MT6360 and similar ADCs
+
+maintainers:
+  - Gene Chen <gene_chen@richtek.com>
+
+properties:
+  compatible:
+    const: mediatek,mt6360-adc
+
+  "#io-channel-cells":
+    const: 1
+
+required:
+  - compatible
+  - "#io-channel-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    adc {
+      compatible = "mediatek,mt6360-adc";
+      #io-channel-cells = <1>;
+    };
+...
diff --git a/Documentation/devicetree/bindings/iio/adc/mt6577_auxadc.txt b/Documentation/devicetree/bindings/iio/adc/mt6577_auxadc.txt
index 78c06e05c8e5..1b7ff9e5615a 100644
--- a/Documentation/devicetree/bindings/iio/adc/mt6577_auxadc.txt
+++ b/Documentation/devicetree/bindings/iio/adc/mt6577_auxadc.txt
@@ -17,6 +17,7 @@ Required properties:
     - "mediatek,mt7622-auxadc": For MT7622 family of SoCs
     - "mediatek,mt8173-auxadc": For MT8173 family of SoCs
     - "mediatek,mt8183-auxadc", "mediatek,mt8173-auxadc": For MT8183 family of SoCs
+    - "mediatek,mt8516-auxadc", "mediatek,mt8173-auxadc": For MT8516 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".
diff --git a/Documentation/devicetree/bindings/iio/adc/renesas,gyroadc.txt b/Documentation/devicetree/bindings/iio/adc/renesas,gyroadc.txt
deleted file mode 100644
index df5b9f2ad8d8..000000000000
--- a/Documentation/devicetree/bindings/iio/adc/renesas,gyroadc.txt
+++ /dev/null
@@ -1,98 +0,0 @@
-* 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
-are sampled by the GyroADC block in a round-robin fashion and the result
-presented in the GyroADC registers.
-
-Required properties:
-- compatible:	Should be "<soc-specific>", "renesas,rcar-gyroadc".
-                The <soc-specific> should be one of:
-		renesas,r8a7791-gyroadc - for the GyroADC block present
-					  in r8a7791 SoC
-		renesas,r8a7792-gyroadc - for the GyroADC with interrupt
-					  block present in r8a7792 SoC
-- reg:		Address and length of the register set for the device
-- 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". 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
-		only subnode) for "fujitsu,mb88101a".
-- #size-cells:	Should be <0> (setting for the subnodes)
-
-Sub-nodes:
-You must define subnode(s) which select the connected ADC type and reference
-voltage for the GyroADC channels.
-
-Required properties for subnodes:
-- compatible:	Should be either of:
-		"fujitsu,mb88101a"
-			- Fujitsu MB88101A compatible mode,
-			  12bit sampling, up to 4 channels can be sampled in
-			  round-robin fashion. One Fujitsu chip supplies four
-			  GyroADC channels with data as it contains four ADCs
-			  on the chip and thus for 4-channel operation, single
-			  MB88101A is required. The Cx chipselect lines of the
-			  MB88101A connect directly to two CHS lines of the
-			  GyroADC, no demuxer is required. The data out line
-			  of each MB88101A connects to a shared input pin of
-			  the GyroADC.
-		"ti,adcs7476" or "ti,adc121" or "adi,ad7476"
-			- TI ADCS7476 / TI ADC121 / ADI AD7476 compatible mode,
-			  15bit sampling, up to 8 channels can be sampled in
-			  round-robin fashion. One TI/ADI chip supplies single
-			  ADC channel with data, thus for 8-channel operation,
-			  8 chips are required. A 3:8 chipselect demuxer is
-			  required to connect the nCS line of the TI/ADI chips
-			  to the GyroADC, while MISO line of each TI/ADI ADC
-			  connects to a shared input pin of the GyroADC.
-		"maxim,max1162" or "maxim,max11100"
-			- Maxim MAX1162 / Maxim MAX11100 compatible mode,
-			  16bit sampling, up to 8 channels can be sampled in
-			  round-robin fashion. One Maxim chip supplies single
-			  ADC channel with data, thus for 8-channel operation,
-			  8 chips are required. A 3:8 chipselect demuxer is
-			  required to connect the nCS line of the MAX chips
-			  to the GyroADC, while MISO line of each Maxim ADC
-			  connects to a shared input pin of the GyroADC.
-- reg:		Should be the number of the analog input. Should be present
-		for all ADCs except "fujitsu,mb88101a".
-- vref-supply:	Reference to the channel reference voltage regulator.
-
-Example:
-	vref_max1162: regulator-vref-max1162 {
-		compatible = "regulator-fixed";
-
-		regulator-name = "MAX1162 Vref";
-		regulator-min-microvolt = <4096000>;
-		regulator-max-microvolt = <4096000>;
-	};
-
-	adc@e6e54000 {
-		compatible = "renesas,r8a7791-gyroadc", "renesas,rcar-gyroadc";
-		reg = <0 0xe6e54000 0 64>;
-		clocks = <&mstp9_clks R8A7791_CLK_GYROADC>;
-		clock-names = "fck";
-		power-domains = <&sysc R8A7791_PD_ALWAYS_ON>;
-
-		pinctrl-0 = <&adc_pins>;
-		pinctrl-names = "default";
-
-		#address-cells = <1>;
-		#size-cells = <0>;
-
-		adc@0 {
-			reg = <0>;
-			compatible = "maxim,max1162";
-			vref-supply = <&vref_max1162>;
-		};
-
-		adc@1 {
-			reg = <1>;
-			compatible = "maxim,max1162";
-			vref-supply = <&vref_max1162>;
-		};
-	};
diff --git a/Documentation/devicetree/bindings/iio/adc/renesas,rcar-gyroadc.yaml b/Documentation/devicetree/bindings/iio/adc/renesas,rcar-gyroadc.yaml
new file mode 100644
index 000000000000..c115e2e99bd9
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/renesas,rcar-gyroadc.yaml
@@ -0,0 +1,143 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/renesas,rcar-gyroadc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas R-Car GyroADC
+
+maintainers:
+  - Marek Vasut <marek.vasut+renesas@gmail.com>
+
+description: |
+  The GyroADC block is a reduced SPI block with up to 8 chipselect lines,
+  which supports the SPI protocol of a selected few SPI ADCs. The SPI ADCs
+  are sampled by the GyroADC block in a round-robin fashion and the result
+  presented in the GyroADC registers.
+  The ADC bindings should match with that of the devices connected to a
+  full featured SPI bus.
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - renesas,r8a7791-gyroadc
+          - renesas,r8a7792-gyroadc
+      - const: renesas,rcar-gyroadc
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    const: fck
+
+  power-domains: true
+
+  resets: true
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 0
+
+additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - "#address-cells"
+  - "#size-cells"
+
+patternProperties:
+  "@[0-7]$":
+    type: object
+    properties:
+      compatible:
+        description: |
+          fujitsu,mb88101a
+          - Fujitsu MB88101A compatible mode,
+            12bit sampling, up to 4 channels can be sampled in round-robin
+            fashion. One Fujitsu chip supplies four GyroADC channels with
+            data as it contains four ADCs on the chip and thus for 4-channel
+            operation, single MB88101A is required. The Cx chipselect lines
+            of the MB88101A connect directly to two CHS lines of the GyroADC,
+            no demuxer is required. The data out line of each MB88101A
+            connects to a shared input pin of the GyroADC.
+          ti,adcs7476 or ti,adc121 or adi,ad7476
+          - TI ADCS7476 / TI ADC121 / ADI AD7476 compatible mode, 15bit
+            sampling, up to 8 channels can be sampled in round-robin
+            fashion. One TI/ADI chip supplies single ADC channel with data,
+            thus for 8-channel operation, 8 chips are required.
+            A 3:8 chipselect demuxer is  required to connect the nCS line
+            of the TI/ADI chips to the GyroADC, while MISO line of each
+            TI/ADI ADC connects to a shared input pin of the GyroADC.
+          maxim,max1162 or maxim,max11100
+          - Maxim MAX1162 / Maxim MAX11100 compatible mode,  16bit sampling,
+            up to 8 channels can be sampled in round-robin fashion. One
+            Maxim chip supplies single ADC channel with data, thus for
+            8-channel operation, 8 chips are required.
+            A 3:8 chipselect demuxer is required to connect the nCS line
+            of the MAX chips to the GyroADC, while MISO line of each Maxim
+            ADC connects to a shared input pin of the GyroADC.
+        enum:
+          - adi,7476
+          - fujitsu,mb88101a
+          - maxim,max1162
+          - maxim,max11100
+          - ti,adcs7476
+          - ti,adc121
+
+      reg:
+        minimum: 0
+        maximum: 7
+
+      vref-supply: true
+
+    additionalProperties: false
+
+    required:
+      - compatible
+      - reg
+      - vref-supply
+
+examples:
+  - |
+    #include <dt-bindings/clock/r8a7791-clock.h>
+    #include <dt-bindings/power/r8a7791-sysc.h>
+    soc {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        adc@e6e54000 {
+            compatible = "renesas,r8a7791-gyroadc", "renesas,rcar-gyroadc";
+            reg = <0 0xe6e54000 0 64>;
+            clocks = <&mstp9_clks R8A7791_CLK_GYROADC>;
+            clock-names = "fck";
+            power-domains = <&sysc R8A7791_PD_ALWAYS_ON>;
+
+            pinctrl-0 = <&adc_pins>;
+            pinctrl-names = "default";
+
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            adc@0 {
+                reg = <0>;
+                compatible = "maxim,max1162";
+                vref-supply = <&vref_max1162>;
+            };
+
+            adc@1 {
+                reg = <1>;
+                compatible = "maxim,max1162";
+                vref-supply = <&vref_max1162>;
+            };
+        };
+    };
+...
diff --git a/Documentation/devicetree/bindings/iio/adc/ti,adc084s021.yaml b/Documentation/devicetree/bindings/iio/adc/ti,adc084s021.yaml
new file mode 100644
index 000000000000..1a113b30a414
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/ti,adc084s021.yaml
@@ -0,0 +1,58 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/ti,adc084s021.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments ADC084S021 ADC
+
+maintainers:
+  - Mårten Lindahl <martenli@axis.com>
+
+description: |
+  8 bit ADC with 4 channels
+
+properties:
+  compatible:
+    const: ti,adc084s021
+
+  reg:
+    maxItems: 1
+
+  spi-max-frequency: true
+
+  vref-supply:
+    description: External reference, needed to establish input scaling
+
+  spi-cpol: true
+  spi-cpha: true
+
+  "#io-channel-cells":
+    const: 1
+
+required:
+  - compatible
+  - reg
+  - vref-supply
+  - spi-cpol
+  - spi-cpha
+
+additionalProperties: false
+
+examples:
+  - |
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        adc@0 {
+            compatible = "ti,adc084s021";
+            reg = <0>;
+            vref-supply = <&adc_vref>;
+            spi-cpol;
+            spi-cpha;
+            spi-max-frequency = <16000000>;
+            #io-channel-cells = <1>;
+        };
+    };
+...
diff --git a/Documentation/devicetree/bindings/iio/adc/ti-adc084s021.txt b/Documentation/devicetree/bindings/iio/adc/ti-adc084s021.txt
deleted file mode 100644
index 4259e50620bc..000000000000
--- a/Documentation/devicetree/bindings/iio/adc/ti-adc084s021.txt
+++ /dev/null
@@ -1,19 +0,0 @@
-* 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/Documentation/devicetree/bindings/iio/adc/x-powers,axp209-adc.yaml b/Documentation/devicetree/bindings/iio/adc/x-powers,axp209-adc.yaml
new file mode 100644
index 000000000000..5ccbb1f81960
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/x-powers,axp209-adc.yaml
@@ -0,0 +1,67 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/x-powers,axp209-adc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: X-Powers AXP ADC bindings
+
+maintainers:
+  - Chen-Yu Tsai <wens@csie.org>
+
+description: |
+  ADC is frequently used as a provider to consumers of the ADC channels.
+  Device is a child of an axp209 multifunction device
+  ADC channels and their indexes per variant:
+
+  AXP209
+  ------
+   0 | acin_v
+   1 | acin_i
+   2 | vbus_v
+   3 | vbus_i
+   4 | pmic_temp
+   5 | gpio0_v
+   6 | gpio1_v
+   7 | ipsout_v
+   8 | batt_v
+   9 | batt_chrg_i
+  10 | batt_dischrg_i
+
+  AXP22x
+  ------
+   0 | pmic_temp
+   1 | batt_v
+   2 | batt_chrg_i
+   3 | batt_dischrg_i
+
+  AXP813
+  ------
+   0 | pmic_temp
+   1 | gpio0_v
+   2 | batt_v
+   3 | batt_chrg_i
+   4 | batt_dischrg_i
+
+
+properties:
+  compatible:
+    enum:
+      - x-powers,axp209-adc
+      - x-powers,axp221-adc
+      - x-powers,axp813-adc
+
+  "#io-channel-cells":
+    const: 1
+
+additionalProperties: false
+
+examples:
+  - |
+    axp221 {
+        adc {
+            compatible = "x-powers,axp221-adc";
+            #io-channel-cells = <1>;
+        };
+    };
+...