Support ROHM BD73800

new file mode 100644
index 000000000000..0d1082804f5a
@@ -0,0 +1,72 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/rohm,pmic-pins.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ROHM PMICs' OTP configured pin descriptions
+
+maintainers:
+  - Matti Vaittinen <[email protected]>
+
+description:
+  Collection of properties which are commonly used to describe various
+  ROHM PMIC's pins.
+
+properties:
+  rohm,clkout-open-drain:
+    description: clk32kout mode. Set to 1 for "open-drain" or 0 for "cmos"
+      a.k.a "push-pull".
+    $ref: /schemas/types.yaml#/definitions/uint32
+    maximum: 1
+
+  rohm,pin-clkout:
+    $ref: /schemas/types.yaml#/definitions/string
+    description:
+      The IC has different OTP options to use clkout-pin for different
+      purposes. Set this property to indicate the OTP variant.
+
+      Many of the ROHM ICs have pins, which function can be defined in
+      OTP. Some of them provide no means to detect the pin configuration
+      at run-time, leaving software unaware of which features the IC
+      really has. These properties can be used to inform which pins
+      provide which functionality. IOW, these properties aren't used to
+      configure pin, they are used to tell what functionality pins on
+      this specific IC have.
+
+    # Supported functionalities depend on the exact IC model. Following
+    # values are already defined: gpi, gpo.
+    # Please, re-use them when adding new ICs.
+
+  rohm,pin-fault_b:
+    $ref: /schemas/types.yaml#/definitions/string
+    description:
+      The IC has different OTP options to use fault_b-pin for different
+      purposes. Set this property to indicate the OTP variant.
+
+    # Supported functionalities depend on the exact IC model. Following
+    # values are already defined: gpi, gpo, faultb, readyind, pwrseq.
+    # Please, re-use them when adding new ICs.
+
+patternProperties:
+  "^rohm,pin-dvs[0-1]$":
+    $ref: /schemas/types.yaml#/definitions/string
+    description:
+      The IC has different OTP options to use dvs<X>-pins for different
+      purposes. Set this property to indicate the OTP variant.
+    # Supported functionalities depend on the exact IC model. Following
+    # values are already defined: dvs-input, gpi, gpo, pwrseq.
+    # Please, re-use them when adding new ICs.
+
+  "^rohm,pin-exten([0-1])?$":
+    $ref: /schemas/types.yaml#/definitions/string
+    description:
+      The IC has an OTP option to use exten -pin(s) for different purposes.
+      Set this property to indicate the OTP variant.
+    # Supported functionalities depend on the exact IC model. Following
+    # values are already defined: gpi, gpo, pwrseq.
+    # Please, re-use them when adding new ICs.
+
+# The schema is expected to be reference by IC schemas, which may introduce
+# other properties that must be allowed.
+additionalProperties: true

index 4fc78efaa550..0a67de054674 100644
@@ -15,6 +15,9 @@ description: |
   for LED and a 500 mA single-cell linear charger. Also included is a Coulomb
   counter, a real-time clock (RTC), and a 32.768 kHz clock gate and two GPOs.
 
+allOf:
+  - $ref: rohm,pmic-pins.yaml#
+
 properties:
   compatible:
     const: rohm,bd71815

@@ -44,11 +47,7 @@ properties:
   clock-output-names:
     const: bd71815-32k-out
 
-  rohm,clkout-open-drain:
-    description: clk32kout mode. Set to 1 for "open-drain" or 0 for "cmos".
-    $ref: /schemas/types.yaml#/definitions/uint32
-    minimum: 0
-    maximum: 1
+  rohm,clkout-open-drain: true
 
   rohm,charger-sense-resistor-micro-ohms:
     minimum: 10000

index 09e7d68e92bf..e5043dec990d 100644
@@ -15,6 +15,9 @@ description: |
   single-cell linear charger. Also included is a Coulomb counter, a real-time
   clock (RTC), and a 32.768 kHz clock gate.
 
+allOf:
+  - $ref: rohm,pmic-pins.yaml#
+
 properties:
   compatible:
     oneOf:

@@ -49,11 +52,7 @@ properties:
   clock-output-names:
     const: bd71828-32k-out
 
-  rohm,clkout-open-drain:
-    description: clk32kout mode. Set to 1 for "open-drain" or 0 for "cmos".
-    $ref: /schemas/types.yaml#/definitions/uint32
-    minimum: 0
-    maximum: 1
+  rohm,clkout-open-drain: true
 
   rohm,charger-sense-resistor-micro-ohms:
     minimum: 10000

index b094542339e8..52d0f6e4ef0f 100644
@@ -15,6 +15,9 @@ description:
   and a 3000 mA switching charger. ICs also include a Coulomb counter,
   a real-time clock (RTC), GPIOs and a 32.768 kHz clock gate.
 
+allOf:
+  - $ref: rohm,pmic-pins.yaml#
+
 # In addition to the properties found from the charger node, PMICs
 # use properties from a static battery node. Please see the:
 # Documentation/devicetree/bindings/power/supply/battery.yaml

@@ -80,10 +83,7 @@ properties:
   clock-output-names:
     const: bd71828-32k-out
 
-  rohm,clkout-open-drain:
-    description: clk32kout mode. Set to 1 for "open-drain" or 0 for "cmos".
-    $ref: /schemas/types.yaml#/definitions/uint32
-    maximum: 1
+  rohm,clkout-open-drain: true
 
   rohm,charger-sense-resistor-micro-ohms:
     minimum: 10000

@@ -103,14 +103,6 @@ properties:
     $ref: /schemas/leds/rohm,bd71828-leds.yaml
 
   rohm,pin-fault_b:
-    $ref: /schemas/types.yaml#/definitions/string
-    description:
-      PMIC has an OTP option to use fault_b-pin for different
-      purposes. Set this property accordingly. OTP options are
-      OTP0 - bi-directional FAULT_B or READY indicator depending on a
-      'sub option'
-      OTP1 - GPO
-      OTP2 - Power sequencer output.
     enum:
       - faultb
       - readyind

@@ -119,14 +111,6 @@ properties:
 
 patternProperties:
   "^rohm,pin-dvs[0-1]$":
-    $ref: /schemas/types.yaml#/definitions/string
-    description:
-      PMIC has 4 different OTP options to determine the use of dvs<X>-pins.
-      OTP0 - regulator RUN state control.
-      OTP1 - GPI.
-      OTP2 - GPO.
-      OTP3 - Power sequencer output.
-      This property specifies the use of the pin.
     enum:
       - dvs-input
       - gpi

@@ -134,11 +118,6 @@ patternProperties:
       - pwrseq
 
   "^rohm,pin-exten[0-1]$":
-    $ref: /schemas/types.yaml#/definitions/string
-    description: PMIC has an OTP option to use exten0-pin for different
-      purposes. Set this property accordingly.
-      OTP0 - GPO
-      OTP1 - Power sequencer output.
     enum:
       - gpo
       - pwrseq

new file mode 100644
index 000000000000..2db4585272c5
@@ -0,0 +1,99 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/regulator/rohm,bd73800-regulator.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ROHM BD73800 Power Management Integrated Circuit regulators
+
+maintainers:
+  - Matti Vaittinen <[email protected]>
+
+description: |
+  This module is part of the ROHM BD73800 MFD device. For more details
+  see Documentation/devicetree/bindings/mfd/rohm,bd73800-pmic.yaml.
+
+  The regulator controller is represented as a sub-node of the PMIC node
+  on the device tree.
+
+  Regulator nodes should be named to buck<number> and ldo<number>.
+  The valid names for BD73800 regulator nodes are
+  buck1, buck2, buck3, buck4, buck5, buck6, buck7, buck8
+  ldo1, ldo2, ldo3, ldo4
+
+patternProperties:
+  "^buck[1-8]$":
+    type: object
+    description:
+      Properties for a single BUCK regulator.
+    allOf:
+      - $ref: regulator.yaml#
+      - $ref: rohm,pmic-states.yaml#
+
+    properties:
+      regulator-name:
+        pattern: "^buck[1-8]$"
+        description:
+          should be "buck1", ..., "buck8"
+
+      rohm,dvs-run-voltage:
+        minimum: 0
+        maximum: 3500000
+
+      rohm,dvs-idle-voltage:
+        minimum: 0
+        maximum: 3500000
+
+      rohm,dvs-suspend-voltage:
+        minimum: 0
+        maximum: 3500000
+
+        # BUCKs 1,2,3,4 and 8 support voltages 0.5 - 1.3V
+        # BUCK 5 supports voltages 0.3 - 1.3V
+        # BUCKs 6 and 7 support voltages 1.5 - 3.5V
+
+    required:
+      - regulator-name
+
+    unevaluatedProperties: false
+
+  "^ldo[1-4]$":
+    type: object
+    description:
+      Properties for single LDO regulator.
+    allOf:
+      - $ref: regulator.yaml#
+      - $ref: rohm,pmic-states.yaml#
+
+    properties:
+      regulator-name:
+        pattern: "^ldo[1-4]$"
+        description:
+          should be "ldo1", ..., "ldo4"
+
+      rohm,dvs-run-voltage:
+        minimum: 0
+        maximum: 1
+
+      rohm,dvs-idle-voltage:
+        minimum: 0
+        maximum: 1
+
+      rohm,dvs-suspend-voltage:
+        minimum: 0
+        maximum: 1
+
+      rohm,ldo-range-high:
+        type: boolean
+        description:
+          LDO1 and LDO3 voltage ranges can be "high" or "low" depending on
+          OTP. Indicate that the "high" range is used. See comment below
+          for voltages.
+
+        # LDOs 2 and 4 support voltages 0.75 - 3.3V
+        # LDOs 1 and 3 may support different ranges depending on OTP.
+        # either 0.6 - 1.8V or 0.75 - 3.3V.
+
+    unevaluatedProperties: false
+
+additionalProperties: false

new file mode 100644
index 000000000000..8371e7f2ab84
@@ -0,0 +1,218 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/rohm,bd73800-pmic.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ROHM BD73800 Power Management Integrated Circuit
+
+maintainers:
+  - Matti Vaittinen <[email protected]>
+
+description:
+  BD73800GW is a single-chip power management IC for battery-powered
+  portable devices. It integrates 8 buck converters, 4 LDOs and a current
+  sense amplifier with ADC. Also included is a Real Time Clock (RTC) and a
+  32.768 kHz clock gate. Depending on the OTP configuration the BD73800
+  may also have interrupt controller and GPIOs.
+
+  There are also different variants called BD71851 and BD71885 which are
+  almost identical from the software point of view.
+
+allOf:
+  - $ref: rohm,pmic-pins.yaml#
+
+properties:
+  compatible:
+    oneOf:
+      - const: rohm,bd73800
+
+      - items:
+          - enum:
+              - rohm,bd71851
+              - rohm,bd71885
+          - const: rohm,bd73800
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  # The GPIO1, CLKOUT (GPIO2), FAULT_B and EXTEN_OUT pins can be
+  # configured to interrupt pins by OTP.
+  interrupt-controller: true
+
+  "#interrupt-cells":
+    const: 1
+    description:
+      The IRQ number. 0 is GPIO1, 1 CLKOUT (GPIO2), 2 FAULT_B and 3 EXTEN_OUT.
+      NOTE, A pin can operate as IRQ source only when the OTP
+      configuration for it has been set to GPI.
+
+  gpio-controller: true
+
+  "#gpio-cells":
+    const: 2
+
+  rohm,pin-gpio1:
+    $ref: /schemas/types.yaml#/definitions/string
+    description:
+      Indicate if the GPIO1 pin has been set to GPI or GPO at manufacturing.
+      The GPIO1, CLKOUT, FAULT_B and EXTEN_OUT pins may be configured for a
+      specific purpose (like ADC input, 32.768 clk output, fault indicator or
+      delivering power sequence to a companion PMIC when multiple PMICs are
+      used) - but also to be either a GPO or GPI. (When used as a GPI the pin
+      can also be used as an IRQ source). The pin purpose is determined by
+      OTP (One Time Programmable memory), typically during device
+      manufacturing. The OTP can't be read at runtime so device-tree should
+      describe the GPIO pins.
+    enum: [gpi, gpo]
+
+  rohm,pin-clkout:
+    enum: [gpi, gpo]
+
+  rohm,pin-fault_b:
+    enum: [gpi, gpo]
+
+  rohm,pin-exten:
+    enum: [gpi, gpo]
+
+  clocks:
+    description:
+      The CLKOUT pin may have its purpose overridden by OTP configuration. It
+      is possible the BD73800 does not output a clock signal. Hence the clk
+      properties are optional.
+    maxItems: 1
+
+  "#clock-cells":
+    const: 0
+
+  clock-output-names:
+    maxItems: 1
+
+  rohm,clkout-open-drain: true
+
+  regulators:
+    $ref: /schemas/regulator/rohm,bd73800-regulator.yaml
+    description:
+      List of child nodes that specify the regulators.
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - regulators
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/leds/common.h>
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+        pmic: pmic@4b {
+            compatible = "rohm,bd73800";
+            reg = <0x4b>;
+
+            interrupt-parent = <&gpio1>;
+            interrupts = <29 IRQ_TYPE_LEVEL_LOW>;
+
+            clocks = <&osc 0>;
+            #clock-cells = <0>;
+            clock-output-names = "bd73800-32k-out";
+
+            gpio-controller;
+            #gpio-cells = <2>;
+
+            rohm,pin-gpio1 = "gpo";
+            rohm,pin-exten = "gpi";
+
+            regulators {
+                buck1: buck1 {
+                    regulator-name = "buck1";
+                    regulator-min-microvolt = <800000>;
+                    regulator-max-microvolt = <2000000>;
+                    regulator-always-on;
+                    regulator-ramp-delay = <1250>;
+                    rohm,dvs-run-voltage = <1150000>;
+                    rohm,dvs-suspend-voltage = <950000>;
+                };
+                buck2: buck2 {
+                    regulator-name = "buck2";
+                    regulator-min-microvolt = <800000>;
+                    regulator-max-microvolt = <2000000>;
+                    regulator-always-on;
+                    regulator-ramp-delay = <1250>;
+                    rohm,dvs-run-voltage = <1150000>;
+                    rohm,dvs-suspend-voltage = <950000>;
+                };
+                buck3: buck3 {
+                    regulator-name = "buck3";
+                    regulator-min-microvolt = <1200000>;
+                    regulator-max-microvolt = <2700000>;
+                    rohm,dvs-run-voltage = <1150000>;
+                    rohm,dvs-idle-voltage = <1100000>;
+                    rohm,dvs-suspend-voltage = <950000>;
+                    regulator-always-on;
+                };
+                buck4: buck4 {
+                    regulator-name = "buck4";
+                    regulator-min-microvolt = <1100000>;
+                    regulator-max-microvolt = <1850000>;
+                    regulator-always-on;
+                };
+                buck5: buck5 {
+                    regulator-name = "buck5";
+                    regulator-min-microvolt = <1800000>;
+                    regulator-max-microvolt = <3300000>;
+                    regulator-always-on;
+                };
+                buck6: buck6 {
+                    regulator-name = "buck6";
+                    regulator-min-microvolt = <1800000>;
+                    regulator-max-microvolt = <3300000>;
+                    regulator-always-on;
+                };
+                buck7: buck7 {
+                    regulator-name = "buck7";
+                    regulator-min-microvolt = <1800000>;
+                    regulator-max-microvolt = <3300000>;
+                    regulator-always-on;
+                };
+                buck8: buck8 {
+                    regulator-name = "buck8";
+                    regulator-min-microvolt = <500000>;
+                    regulator-max-microvolt = <1300000>;
+                    regulator-always-on;
+                };
+                ldo1: ldo1 {
+                    regulator-name = "ldo1";
+                    rohm,ldo-range-high;
+                    regulator-min-microvolt = <800000>;
+                    regulator-max-microvolt = <3300000>;
+                    regulator-always-on;
+                };
+                ldo2: ldo2 {
+                    regulator-name = "ldo2";
+                    regulator-min-microvolt = <800000>;
+                    regulator-max-microvolt = <3300000>;
+                    regulator-always-on;
+                };
+                ldo3: ldo3 {
+                    regulator-name = "ldo3";
+                    regulator-min-microvolt = <800000>;
+                    regulator-max-microvolt = <3300000>;
+                    regulator-always-on;
+                };
+                ldo4: ldo4 {
+                    regulator-name = "ldo4";
+                    regulator-min-microvolt = <650000>;
+                    regulator-max-microvolt = <1750000>;
+                    regulator-always-on;
+                };
+            };
+        };
+    };

index e4fd4572472f..439dbf5ee110 100644
@@ -2226,7 +2226,7 @@ config MFD_ROHM_BD718XX
 	  and emergency shut down as well as 32,768KHz clock output.
 
 config MFD_ROHM_BD71828
-	tristate "ROHM BD718[15/28/79], BD72720 and BD73900 PMICs"
+	tristate "ROHM BD718[15/28/79], BD72720 and BD73[8/9]00 PMICs"
 	depends on I2C=y
 	depends on OF
 	select REGMAP_I2C

@@ -2235,14 +2235,17 @@ config MFD_ROHM_BD71828
 	select MFD_ROHM_PWRBUTTON
 	help
 	  Select this option to get support for the ROHM BD71815, BD71828,
-	  BD71879, BD72720 and BD73900 Power Management ICs (PMICs). These are
-	  single-chip Power Management ICs (PMIC), mainly for battery-powered
-	  portable devices.
+	  BD71879, BD72720, BD73800 and BD73900 Power Management ICs (PMICs).
+	  These are single-chip Power Management ICs (PMIC), mainly for
+	  battery-powered portable devices.
 	  The BD71815 has 5 bucks, 7 LDOs, and a boost for driving LEDs.
 	  The BD718[28/79] have 7 buck converters and 7 LDOs.
 	  The BD72720 and the BD73900 have 10 bucks and 11 LDOs.
-	  All ICs provide a single-cell linear charger, a Coulomb counter,
-	  a Real-Time Clock (RTC), GPIOs and a 32.768 kHz clock gate.
+	  All the above ICs provide a single-cell linear charger, and a Coulomb
+	  counter.
+	  The BD73800 has 8 bucks, 4 LDOs and ADC for power/current
+	  accumulation but no charging logic. All these PMICs integrate also a
+	  Real-Time Clock (RTC), GPIOs and a 32.768 kHz clock gate.
 
 config MFD_ROHM_BD957XMUF
 	tristate "ROHM BD9576MUF and BD9573MUF Power Management ICs"

index 89789ac7a786..13928af8cad4 100644
@@ -241,12 +241,12 @@ config REGULATOR_BD71815
 	  will be called bd71815-regulator.
 
 config REGULATOR_BD71828
-	tristate "ROHM BD71828, BD72720 and BD73900 Power Regulators"
+	tristate "ROHM BD71828, BD72720 and BD73[8/9]00 Power Regulators"
 	depends on MFD_ROHM_BD71828
 	select REGULATOR_ROHM
 	help
 	  This driver supports voltage regulators on ROHM BD71828,
-	  BD71879, BD72720 and BD73900 PMICs. This will enable
+	  BD71879, BD72720 and BD73[8/9]00 PMICs. This will enable
 	  support for the software controllable buck and LDO regulators.
 
 	  This driver can also be built as a module. If so, the module

index a48586bb8edb..64127740a248 100644
@@ -1385,6 +1385,18 @@ config GPIO_BD72720
 	  be configured to GPO on the ROHM PMIC. The pin configuration is done
 	  on OTP at manufacturing.
 
+config GPIO_BD73800
+	tristate "ROHM BD73800 GPIO support"
+	depends on MFD_ROHM_BD71828
+	select GPIO_REGMAP
+	help
+	  Support for GPIOs on ROHM BD73800 PMIC. There can be up to 4
+	  GPI or GPO pins available on the PMIC in total. The purpose of
+	  the pins is decided at the device manufacturing by OTP
+	  configuration and can't be reconfigured later. Enable this
+	  if your PMIC has pins set as GPIs or GPOs and if you wish to
+	  control the pins via the GPIO framework.
+
 config GPIO_BD9571MWV
 	tristate "ROHM BD9571 GPIO support"
 	depends on MFD_BD9571MWV

index dc9e6d643b5b..dc5e0583e328 100644
@@ -45,6 +45,7 @@ obj-$(CONFIG_GPIO_BCM_XGS_IPROC)	+= gpio-xgs-iproc.o
 obj-$(CONFIG_GPIO_BD71815)		+= gpio-bd71815.o
 obj-$(CONFIG_GPIO_BD71828)		+= gpio-bd71828.o
 obj-$(CONFIG_GPIO_BD72720)		+= gpio-bd72720.o
+obj-$(CONFIG_GPIO_BD73800)		+= gpio-bd73800.o
 obj-$(CONFIG_GPIO_BD9571MWV)		+= gpio-bd9571mwv.o
 obj-$(CONFIG_GPIO_BLZP1600)		+= gpio-blzp1600.o
 obj-$(CONFIG_GPIO_BRCMSTB)		+= gpio-brcmstb.o

index 3a19da74d00c..b0925fa212cc 100644
@@ -23821,6 +23821,7 @@ F:	drivers/clk/clk-bd718x7.c
 F:	drivers/gpio/gpio-bd71815.c
 F:	drivers/gpio/gpio-bd71828.c
 F:	drivers/gpio/gpio-bd72720.c
+F:	drivers/gpio/gpio-bd73800.c
 F:	drivers/mfd/rohm-bd71828.c
 F:	drivers/mfd/rohm-bd718x7.c
 F:	drivers/mfd/rohm-bd9576.c

@@ -23840,6 +23841,7 @@ F:	include/linux/mfd/rohm-bd71815.h
 F:	include/linux/mfd/rohm-bd71828.h
 F:	include/linux/mfd/rohm-bd718x7.h
 F:	include/linux/mfd/rohm-bd72720.h
+F:	include/linux/mfd/rohm-bd73800.h
 F:	include/linux/mfd/rohm-bd957x.h
 F:	include/linux/mfd/rohm-bd96801.h
 F:	include/linux/mfd/rohm-bd96802.h