[PATCH 0/8] Support ROHM BD73800

[PATCH 0/8] Support ROHM BD73800

[Matti Vaittinen]

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Add support for the ROHM BD73800 PMIC and compatibles.

The ROHM BD73800 is a power management IC which integrates 8 BUCKs and 4
LDOs. There is also an ADC and operation amplifier intended for current
/ temperature measurement and accumulation. RTC and 32.768 kHz clock
gate are also included. The PMIC can be customized via OTP and it has
options for operating as a main PMIC in multi-PMIC installation. Some
of the pins can also be used for GPO or GPI (including interrupt support).

There are also ROHM BD71851 and BD71885 PMICs out there. These are, from
the SW-perspective, similar to the BD73800. There is only some different
default values and OTP settings. The driver should be able to handle them
just fine.

Oh, finally - there is absolutely no rush reviewing this. I am likely to
be (mostly) offline for (at least) 3 weeks. So please, take your time, I
probably will spin the next version only somewhere at August.

---

Matti Vaittinen (8):
  dt-bindings: regulator: ROHM BD73800 regulators
  dt-bindings: mfd: ROHM BD73800 PMIC
  mfd: Support for ROHM BD73800 PMIC core
  rtc: bd70528: Support RTC on ROHM BD73800
  regulator: bd71828: Support ROHM BD73800
  clk: bd718x7: Support ROHM BD73800
  gpio: bd73800: Support ROHM BD73800 PMIC GPIOs
  MAINTAINERS: Add ROHM BD73800 PMIC files

 .../bindings/mfd/rohm,bd73800-pmic.yaml       | 229 ++++++++
 .../regulator/rohm,bd73800-regulator.yaml     | 119 ++++
 MAINTAINERS                                   |   2 +
 drivers/clk/clk-bd718x7.c                     |   8 +
 drivers/gpio/Kconfig                          |  11 +
 drivers/gpio/Makefile                         |   1 +
 drivers/gpio/gpio-bd73800.c                   | 234 ++++++++
 drivers/mfd/Kconfig                           |  15 +-
 drivers/mfd/rohm-bd71828.c                    | 145 ++++-
 drivers/regulator/Kconfig                     |   4 +-
 drivers/regulator/bd71828-regulator.c         | 555 +++++++++++++++++-
 drivers/rtc/rtc-bd70528.c                     |   8 +
 include/linux/mfd/rohm-bd73800.h              | 307 ++++++++++
 include/linux/mfd/rohm-generic.h              |   1 +
 14 files changed, 1629 insertions(+), 10 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/mfd/rohm,bd73800-pmic.yaml
 create mode 100644 Documentation/devicetree/bindings/regulator/rohm,bd73800-regulator.yaml
 create mode 100644 drivers/gpio/gpio-bd73800.c
 create mode 100644 include/linux/mfd/rohm-bd73800.h


base-commit: dc59e4fea9d83f03bad6bddf3fa2e52491777482
-- 
2.54.0


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[PATCH 1/8] dt-bindings: regulator: ROHM BD73800 regulators

[Matti Vaittinen]

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From: Matti Vaittinen <mazziesaccount@gmail.com>

Add bindings for the BUCKs and LDOs on ROHM BD73800. The PMIC state
specific voltages can be set in same fashion as with a few other ROHM
PMICs (for example with BD718[15,28,37,47,50,79]). Same properties are
recycled :)

The LDOs 1 and 4 can use different voltage ranges depending on the OTP
configuration.

Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
---
 .../regulator/rohm,bd73800-regulator.yaml     | 119 ++++++++++++++++++
 1 file changed, 119 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/regulator/rohm,bd73800-regulator.yaml

diff --git a/Documentation/devicetree/bindings/regulator/rohm,bd73800-regulator.yaml b/Documentation/devicetree/bindings/regulator/rohm,bd73800-regulator.yaml
new file mode 100644
index 000000000000..c427a04098ec
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/rohm,bd73800-regulator.yaml
@@ -0,0 +1,119 @@
+# 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 <mazziesaccount@gmail.com>
+
+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.
+    $ref: regulator.yaml#
+
+    properties:
+      regulator-name:
+        pattern: "^buck[1-8]$"
+        description:
+          should be "buck1", ..., "buck8"
+
+      rohm,dvs-run-voltage:
+        description:
+          PMIC default "RUN" state voltage in uV. 0 means disabled. See the
+          explanation below for regulator specific details.
+        $ref: /schemas/types.yaml#/definitions/uint32
+        minimum: 0
+        maximum: 3500000
+
+      rohm,dvs-idle-voltage:
+        description:
+          PMIC default "IDLE" state voltage in uV. 0 means disabled. See the
+          explanation below for regulator specific details.
+        $ref: /schemas/types.yaml#/definitions/uint32
+        minimum: 0
+        maximum: 3500000
+
+      rohm,dvs-suspend-voltage:
+        description:
+          PMIC default "SUSPEND" state voltage in uV. 0 means disabled. See the
+          explanation below for regulator specific details.
+        $ref: /schemas/types.yaml#/definitions/uint32
+        minimum: 0
+        maximum: 3500000
+
+        # BUCKs 1,2,3,4 and 8 support voltages 0.5 - 1.3V
+        # BUCK 5 supports voltages 0.3 - 1.3V
+        # BUCKs 6 and 7 support voltages 1.5 - 3.5V
+
+    required:
+      - regulator-name
+
+    unevaluatedProperties: false
+
+  "^ldo[1-4]$":
+    type: object
+    description:
+      Properties for single LDO regulator.
+    $ref: regulator.yaml#
+
+    properties:
+      regulator-name:
+        pattern: "^ldo[1-4]$"
+        description:
+          should be "ldo1", ..., "ldo4"
+
+      rohm,dvs-run-voltage:
+        description:
+          Set the default output state at PMIC's "RUN" state.
+          0 is disabled, 1 is enabled.
+        $ref: /schemas/types.yaml#/definitions/uint32
+        minimum: 0
+        maximum: 1
+
+      rohm,dvs-idle-voltage:
+        description:
+          Set the default output state at PMIC's "IDLE" state.
+          0 is disabled, 1 is enabled.
+        $ref: /schemas/types.yaml#/definitions/uint32
+        minimum: 0
+        maximum: 1
+
+      rohm,dvs-suspend-voltage:
+        description:
+          Set the default output state at PMIC's "SUSPEND" state.
+          0 is disabled, 1 is enabled.
+        $ref: /schemas/types.yaml#/definitions/uint32
+        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
-- 
2.54.0


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Re: [PATCH 1/8] dt-bindings: regulator: ROHM BD73800 regulators

[Rob Herring (Arm)]

On Wed, 01 Jul 2026 15:41:11 +0300, Matti Vaittinen wrote:
> From: Matti Vaittinen <mazziesaccount@gmail.com>
> 
> Add bindings for the BUCKs and LDOs on ROHM BD73800. The PMIC state
> specific voltages can be set in same fashion as with a few other ROHM
> PMICs (for example with BD718[15,28,37,47,50,79]). Same properties are
> recycled :)
> 
> The LDOs 1 and 4 can use different voltage ranges depending on the OTP
> configuration.
> 
> Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
> ---
>  .../regulator/rohm,bd73800-regulator.yaml     | 119 ++++++++++++++++++
>  1 file changed, 119 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/regulator/rohm,bd73800-regulator.yaml
> 

My bot found errors running 'make dt_binding_check' on your patch:

yamllint warnings/errors:

dtschema/dtc warnings/errors:


doc reference errors (make refcheckdocs):
Warning: Documentation/devicetree/bindings/regulator/rohm,bd73800-regulator.yaml references a file that doesn't exist: Documentation/devicetree/bindings/mfd/rohm,bd73800-pmic.yaml
Documentation/devicetree/bindings/regulator/rohm,bd73800-regulator.yaml: Documentation/devicetree/bindings/mfd/rohm,bd73800-pmic.yaml

See https://patchwork.kernel.org/project/devicetree/patch/67b42b5363533f11c22a6421417c3345f9872aec.1782909323.git.mazziesaccount@gmail.com

The base for the series is generally the latest rc1. A different dependency
should be noted in *this* patch.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit after running the above command yourself. Note
that DT_SCHEMA_FILES can be set to your schema file to speed up checking
your schema. However, it must be unset to test all examples with your schema.

Re: [PATCH 1/8] dt-bindings: regulator: ROHM BD73800 regulators

[Rob Herring]

On Wed, Jul 01, 2026 at 03:41:11PM +0300, Matti Vaittinen wrote:
> From: Matti Vaittinen <mazziesaccount@gmail.com>
> 
> Add bindings for the BUCKs and LDOs on ROHM BD73800. The PMIC state
> specific voltages can be set in same fashion as with a few other ROHM
> PMICs (for example with BD718[15,28,37,47,50,79]). Same properties are
> recycled :)
> 
> The LDOs 1 and 4 can use different voltage ranges depending on the OTP
> configuration.
> 
> Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
> ---
>  .../regulator/rohm,bd73800-regulator.yaml     | 119 ++++++++++++++++++
>  1 file changed, 119 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/regulator/rohm,bd73800-regulator.yaml
> 
> diff --git a/Documentation/devicetree/bindings/regulator/rohm,bd73800-regulator.yaml b/Documentation/devicetree/bindings/regulator/rohm,bd73800-regulator.yaml
> new file mode 100644
> index 000000000000..c427a04098ec
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/regulator/rohm,bd73800-regulator.yaml


> +      rohm,dvs-run-voltage:
> +        description:
> +          PMIC default "RUN" state voltage in uV. 0 means disabled. See the
> +          explanation below for regulator specific details.
> +        $ref: /schemas/types.yaml#/definitions/uint32
> +        minimum: 0
> +        maximum: 3500000

[...]

> +      rohm,dvs-run-voltage:
> +        description:
> +          Set the default output state at PMIC's "RUN" state.
> +          0 is disabled, 1 is enabled.
> +        $ref: /schemas/types.yaml#/definitions/uint32
> +        minimum: 0
> +        maximum: 1

Same property name with 2 different meanings. Not a good design pattern.

Also, if these properties are copied from other schemas, don't duplicate 
them. Put them in a common schema and reference it here.

Rob

Re: [PATCH 1/8] dt-bindings: regulator: ROHM BD73800 regulators

[Matti Vaittinen]

Hi Rob,

Thanks (again) for the review!

On 01/07/2026 22:25, Rob Herring wrote:
> On Wed, Jul 01, 2026 at 03:41:11PM +0300, Matti Vaittinen wrote:
>> From: Matti Vaittinen <mazziesaccount@gmail.com>
>>
>> Add bindings for the BUCKs and LDOs on ROHM BD73800. The PMIC state
>> specific voltages can be set in same fashion as with a few other ROHM
>> PMICs (for example with BD718[15,28,37,47,50,79]). Same properties are
>> recycled :)
>>
>> The LDOs 1 and 4 can use different voltage ranges depending on the OTP
>> configuration.
>>
>> Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
>> ---
>>   .../regulator/rohm,bd73800-regulator.yaml     | 119 ++++++++++++++++++
>>   1 file changed, 119 insertions(+)
>>   create mode 100644 Documentation/devicetree/bindings/regulator/rohm,bd73800-regulator.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/regulator/rohm,bd73800-regulator.yaml b/Documentation/devicetree/bindings/regulator/rohm,bd73800-regulator.yaml
>> new file mode 100644
>> index 000000000000..c427a04098ec
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/regulator/rohm,bd73800-regulator.yaml
> 
> 
>> +      rohm,dvs-run-voltage:
>> +        description:
>> +          PMIC default "RUN" state voltage in uV. 0 means disabled. See the
>> +          explanation below for regulator specific details.
>> +        $ref: /schemas/types.yaml#/definitions/uint32
>> +        minimum: 0
>> +        maximum: 3500000
> 
> [...]
> 
>> +      rohm,dvs-run-voltage:
>> +        description:
>> +          Set the default output state at PMIC's "RUN" state.
>> +          0 is disabled, 1 is enabled.
>> +        $ref: /schemas/types.yaml#/definitions/uint32
>> +        minimum: 0
>> +        maximum: 1
> 
> Same property name with 2 different meanings. Not a good design pattern.

Hmm. They do actually have the same meaning. Setting the "RUN" -state 
voltage. Values '0' and '1' have special meaning "disable" and "enable" 
- also for BUCKs.

For LDOs on this PMIC, only the enable/disable configuration can be set 
for each hardware-state as the LDO voltage is same for all hardware 
states. Hence only subset of the property values (1/0) are supported for 
the LDOs.

> Also, if these properties are copied from other schemas, don't duplicate
> them. Put them in a common schema and reference it here.

Ah. I think this is a great idea, and I should've thought that already a 
few PMICs ago :) We have been reviewing and discussing these properties 
with you since ... maybe 2018, as I've added new PMICs re-using them... ;)

Thanks! I'll rework this but v2 is likely to be out only at August.

Yours,
	-- Matti

-- 
Matti Vaittinen
Linux kernel developer at ROHM Semiconductors
Oulu Finland

~~ When things go utterly wrong vim users can always type :help! ~~

[PATCH 2/8] dt-bindings: mfd: ROHM BD73800 PMIC

[Matti Vaittinen]

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From: Matti Vaittinen <mazziesaccount@gmail.com>

The ROHM BD73800 is a power management IC which integrates 8 BUCKs and 4
LDOs. There is also an ADC and operation amplifier intended for current
/ temperature measurement and accumulation. RTC and 32.768 kHz clock
gate are also included. The PMIC can be customized via OTP and it has
options for operating as a main PMIC in multi-PMIC installation. Some
of the pins can also be used for GPO or GPI (including interrupt support).

There are also ROHM BD71851 and BD71885 PMICs out there. These are, from
the SW-perspective, similar to the BD73800. There is only some different
default values and OTP settings. The driver should be able to handle them
just fine.

Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
---
 .../bindings/mfd/rohm,bd73800-pmic.yaml       | 229 ++++++++++++++++++
 1 file changed, 229 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mfd/rohm,bd73800-pmic.yaml

diff --git a/Documentation/devicetree/bindings/mfd/rohm,bd73800-pmic.yaml b/Documentation/devicetree/bindings/mfd/rohm,bd73800-pmic.yaml
new file mode 100644
index 000000000000..6371de08b865
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/rohm,bd73800-pmic.yaml
@@ -0,0 +1,229 @@
+# 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 <mazziesaccount@gmail.com>
+
+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.
+
+properties:
+  compatible:
+    oneOf:
+      - const: rohm,bd73800
+
+      - items:
+          - const: rohm,bd71851
+          - const: rohm,bd73800
+
+      - items:
+          - const: 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
+
+# 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 pins.
+  rohm,pin-gpio1:
+    $ref: /schemas/types.yaml#/definitions/string
+    description:
+      Indicate if the GPIO1 pin has been set to GPI or GPO at manufacturing.
+    enum: [gpi, gpo]
+
+  rohm,pin-clkout:
+    $ref: /schemas/types.yaml#/definitions/string
+    description:
+      Indicate if the CLKOUT pin has been set to GPI or GPO at manufacturing.
+    enum: [gpi, gpo]
+
+  rohm,pin-fault-b:
+    $ref: /schemas/types.yaml#/definitions/string
+    description:
+      Indicate if the FAULT_B pin has been set to GPI or GPO at manufacturing.
+    enum: [gpi, gpo]
+
+  rohm,pin-exten:
+    $ref: /schemas/types.yaml#/definitions/string
+    description:
+      Indicate if the EXTEN_OUT pin has been set to GPI or GPO at
+      manufacturing.
+    enum: [gpi, gpo]
+
+  # The CLKOUT pin may have its purpose overridden by OTP configuration. It is
+  # possible the BD73800 does not output a clock signal. Hence the optional clk
+  # properties.
+  clocks:
+    maxItems: 1
+
+  "#clock-cells":
+    const: 0
+
+  clock-output-names:
+    const: bd73800-32k-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
+
+  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;
+                };
+            };
+        };
+    };
-- 
2.54.0


[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 488 bytes --]

Re: [PATCH 2/8] dt-bindings: mfd: ROHM BD73800 PMIC

[Krzysztof Kozlowski]

On Wed, Jul 01, 2026 at 03:41:34PM +0300, Matti Vaittinen wrote:
> +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.
> +
> +properties:
> +  compatible:
> +    oneOf:
> +      - const: rohm,bd73800
> +
> +      - items:
> +          - const: rohm,bd71851
> +          - const: rohm,bd73800
> +
> +      - items:
> +          - const: rohm,bd71885

items:
  - enum:
      -
      -
  - const: rohm,bd73800

> +          - 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
> +
> +# The GPIO1, CLKOUT, FAULT_B and EXTEN_OUT pins may be configured for a

Missing two spaces (indent) before the comment, although this should be
put into description. I understand it applies to each description - it
is fine to add to the first one. Descriptions might be used to generate
user-friendly representation of bindings (PDF). Comments won't, so
comments are only to explain the binding/schema syntax choices.

> +# 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 pins.
> +  rohm,pin-gpio1:
> +    $ref: /schemas/types.yaml#/definitions/string
> +    description:
> +      Indicate if the GPIO1 pin has been set to GPI or GPO at manufacturing.
> +    enum: [gpi, gpo]
> +
> +  rohm,pin-clkout:
> +    $ref: /schemas/types.yaml#/definitions/string
> +    description:
> +      Indicate if the CLKOUT pin has been set to GPI or GPO at manufacturing.
> +    enum: [gpi, gpo]
> +
> +  rohm,pin-fault-b:
> +    $ref: /schemas/types.yaml#/definitions/string
> +    description:
> +      Indicate if the FAULT_B pin has been set to GPI or GPO at manufacturing.
> +    enum: [gpi, gpo]
> +
> +  rohm,pin-exten:
> +    $ref: /schemas/types.yaml#/definitions/string
> +    description:
> +      Indicate if the EXTEN_OUT pin has been set to GPI or GPO at
> +      manufacturing.
> +    enum: [gpi, gpo]
> +
> +  # The CLKOUT pin may have its purpose overridden by OTP configuration. It is
> +  # possible the BD73800 does not output a clock signal. Hence the optional clk
> +  # properties.

Same here

items:
  - description: foo bar

> +  clocks:
> +    maxItems: 1
> +
> +  "#clock-cells":
> +    const: 0
> +
> +  clock-output-names:
> +    const: bd73800-32k-out

If this is fixed, then drop clock-output-names. Otherwise should be just
maxItems: 1


> +
> +  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

Best regards,
Krzysztof

Re: [PATCH 2/8] dt-bindings: mfd: ROHM BD73800 PMIC

[Matti Vaittinen]

Hi dee Ho Krzysztof!

Thanks for the review (again)!

On 02/07/2026 11:05, Krzysztof Kozlowski wrote:
> On Wed, Jul 01, 2026 at 03:41:34PM +0300, Matti Vaittinen wrote:
>> +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.
>> +
>> +properties:
>> +  compatible:
>> +    oneOf:
>> +      - const: rohm,bd73800
>> +
>> +      - items:
>> +          - const: rohm,bd71851
>> +          - const: rohm,bd73800
>> +
>> +      - items:
>> +          - const: rohm,bd71885
> 
> items:
>    - enum:
>        -
>        -
>    - const: rohm,bd73800

I suppose this will mean compatible is one of the enum values AND 
rohm,bd73800 as a fallback, while accepting also the rohm,bd73800 alone. 
(No need to reply, I will test it out). If so, then I'll do this for the 
next version (which is probably out only at August).

> 
>> +          - 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
>> +
>> +# The GPIO1, CLKOUT, FAULT_B and EXTEN_OUT pins may be configured for a
> 
> Missing two spaces (indent) before the comment, although this should be
> put into description. I understand it applies to each description - it
> is fine to add to the first one. Descriptions might be used to generate
> user-friendly representation of bindings (PDF). Comments won't, so
> comments are only to explain the binding/schema syntax choices.

This comment sounds like someone is crafting a tool which can convert 
the bindings to human-readable spec? For someone as yaml-illiterate as 
me, this really brings some hope :) Although, I would hope we saw some 
"comment-key" which could be used to mark the comment to be included in 
said human-readable format. Stuffing it in the 1.st description is Ok, 
but still somewhat sub-optimal. Oh well, "Ok" will do - I'll add this to 
the description when re-spinning.

I do appreciate your help and feedback (as always!).

Yours,
	-- Matti

-- 
Matti Vaittinen
Linux kernel developer at ROHM Semiconductors
Oulu Finland

~~ When things go utterly wrong vim users can always type :help! ~~

[PATCH 3/8] mfd: Support for ROHM BD73800 PMIC core

[Matti Vaittinen]

[-- Attachment #1: Type: text/plain, Size: 21493 bytes --]

From: Matti Vaittinen <mazziesaccount@gmail.com>

The BD73800 integrates regulators, ADC (intended for accumulating current /
voltage / power values), a real-time clock (RTC), clock gate and GPIOs.

Add core support for ROHM BD73800 Power Management IC.

Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
---
 drivers/mfd/Kconfig              |  15 +-
 drivers/mfd/rohm-bd71828.c       | 145 ++++++++++++++-
 include/linux/mfd/rohm-bd73800.h | 307 +++++++++++++++++++++++++++++++
 include/linux/mfd/rohm-generic.h |   1 +
 4 files changed, 461 insertions(+), 7 deletions(-)
 create mode 100644 include/linux/mfd/rohm-bd73800.h

diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 763ce6a34782..c5e9032eb9de 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -2222,7 +2222,7 @@ 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
@@ -2230,14 +2230,17 @@ config MFD_ROHM_BD71828
 	select MFD_CORE
 	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"
diff --git a/drivers/mfd/rohm-bd71828.c b/drivers/mfd/rohm-bd71828.c
index a79f354bf5cb..31637777b627 100644
--- a/drivers/mfd/rohm-bd71828.c
+++ b/drivers/mfd/rohm-bd71828.c
@@ -2,7 +2,7 @@
 /*
  * Copyright (C) 2019 ROHM Semiconductors
  *
- * ROHM BD718[15/28/79] and BD72720 PMIC driver
+ * ROHM BD718[15/28/79], BD72720 and BD73[8/9]00 PMIC driver
  */
 
 #include <linux/gpio_keys.h>
@@ -15,6 +15,7 @@
 #include <linux/mfd/rohm-bd71815.h>
 #include <linux/mfd/rohm-bd71828.h>
 #include <linux/mfd/rohm-bd72720.h>
+#include <linux/mfd/rohm-bd73800.h>
 #include <linux/mfd/rohm-generic.h>
 #include <linux/module.h>
 #include <linux/of.h>
@@ -68,6 +69,12 @@ static const struct resource bd72720_rtc_irqs[] = {
 	DEFINE_RES_IRQ_NAMED(BD72720_INT_RTC2, "bd70528-rtc-alm-2"),
 };
 
+static const struct resource bd73800_rtc_irqs[] = {
+	DEFINE_RES_IRQ_NAMED(BD73800_INT_RTC0, "bd70528-rtc-alm-0"),
+	DEFINE_RES_IRQ_NAMED(BD73800_INT_RTC1, "bd70528-rtc-alm-1"),
+	DEFINE_RES_IRQ_NAMED(BD73800_INT_RTC2, "bd70528-rtc-alm-2"),
+};
+
 static const struct resource bd71815_power_irqs[] = {
 	DEFINE_RES_IRQ_NAMED(BD71815_INT_DCIN_RMV, "bd71815-dcin-rmv"),
 	DEFINE_RES_IRQ_NAMED(BD71815_INT_CLPS_OUT, "bd71815-dcin-clps-out"),
@@ -249,6 +256,17 @@ static const struct mfd_cell bd72720_mfd_cells[] = {
 	},
 };
 
+static const struct mfd_cell bd73800_mfd_cells[] = {
+	{ .name = "bd73800-pmic", },
+	{ .name = "bd73800-clk", },
+	{ .name = "bd73800-gpio", },
+	{
+		.name = "bd73800-rtc",
+		.num_resources = ARRAY_SIZE(bd73800_rtc_irqs),
+		.resources = &bd73800_rtc_irqs[0],
+	},
+};
+
 static const struct regmap_range bd71815_volatile_ranges[] = {
 	regmap_reg_range(BD71815_REG_SEC, BD71815_REG_YEAR),
 	regmap_reg_range(BD71815_REG_CONF, BD71815_REG_BAT_TEMP),
@@ -358,6 +376,17 @@ static const struct regmap_range bd72720_volatile_ranges_4c[] = {
 	BD72720_UNWRAP_REG_RANGE(BD72720_REG_IMPCHK_CTRL, BD72720_REG_IMPCHK_CTRL),
 };
 
+static const struct regmap_range bd73800_volatile_ranges[] = {
+	regmap_reg_range(BD73800_REG_POR_REASON, BD73800_REG_POW_STATE),
+	regmap_reg_range(BD73800_REG_PS_CTRL_1, BD73800_REG_PS_CTRL_2),
+	regmap_reg_range(BD73800_REG_RCVNUM, BD73800_REG_RCVNUM),
+	regmap_reg_range(BD73800_REG_RTC_SEC, BD73800_REG_RTC_YEAR),
+	regmap_reg_range(BD73800_REG_RTC_CONF, BD73800_REG_RTC_CONF),
+	regmap_reg_range(BD73800_REG_ADC_ACCUM_KICK, BD73800_REG_ADC_TEMP_VAL0),
+	regmap_reg_range(BD73800_REG_INT_MAIN_STAT, BD73800_REG_INT_5_STAT),
+	regmap_reg_range(BD73800_REG_INT_MAIN_SRC, BD73800_REG_INT_5_SRC),
+};
+
 static const struct regmap_access_table bd71815_volatile_regs = {
 	.yes_ranges = &bd71815_volatile_ranges[0],
 	.n_yes_ranges = ARRAY_SIZE(bd71815_volatile_ranges),
@@ -383,6 +412,24 @@ static const struct regmap_access_table bd72720_volatile_regs_4c = {
 	.n_yes_ranges = ARRAY_SIZE(bd72720_volatile_ranges_4c),
 };
 
+static const struct regmap_access_table bd73800_volatile_regs = {
+	.yes_ranges = &bd73800_volatile_ranges[0],
+	.n_yes_ranges = ARRAY_SIZE(bd73800_volatile_ranges),
+};
+
+static const struct regmap_range bd73800_read_only_ranges[] = {
+	regmap_reg_range(BD73800_REG_PRODUCT_ID, BD73800_REG_NVMVERSION),
+	regmap_reg_range(BD73800_REG_POW_STATE, BD73800_REG_POW_STATE),
+	regmap_reg_range(BD73800_REG_ADC_ACCUM_CNT2, BD73800_REG_ADC_TEMP_VAL0),
+	regmap_reg_range(BD73800_REG_INT_MAIN_STAT, BD73800_REG_INT_MAIN_STAT),
+	regmap_reg_range(BD73800_REG_INT_MAIN_SRC, BD73800_REG_INT_5_SRC),
+};
+
+static const struct regmap_access_table bd73800_ro_regs = {
+	.no_ranges = &bd73800_read_only_ranges[0],
+	.n_no_ranges = ARRAY_SIZE(bd73800_read_only_ranges),
+};
+
 static const struct regmap_config bd71815_regmap = {
 	.reg_bits = 8,
 	.val_bits = 8,
@@ -467,6 +514,15 @@ static const struct regmap_config bd72720_regmap_4c = {
 	.cache_type = REGCACHE_MAPLE,
 };
 
+static const struct regmap_config bd73800_regmap = {
+	.reg_bits = 8,
+	.val_bits = 8,
+	.wr_table = &bd73800_ro_regs,
+	.volatile_table = &bd73800_volatile_regs,
+	.max_register = BD73800_MAX_REGISTER - 1,
+	.cache_type = REGCACHE_MAPLE,
+};
+
 /*
  * Mapping of main IRQ register bits to sub-IRQ register offsets so that we can
  * access corect sub-IRQ registers based on bits that are set in main IRQ
@@ -798,6 +854,60 @@ static int bd72720_set_type_config(unsigned int **buf, unsigned int type,
 	return regmap_irq_set_type_config_simple(buf, type, irq_data, idx, irq_drv_data);
 }
 
+static const struct regmap_irq bd73800_irqs[] = {
+	/* INT_STAT_1 register IRQs, ADC and RTC */
+	REGMAP_IRQ_REG(BD73800_INT_ADC_ACCUM_DONE, 0, BD73800_INT_ADC_ACCUM_DONE_MASK),
+	REGMAP_IRQ_REG(BD73800_INT_ADC_ACCUM_OVF, 0, BD73800_INT_ADC_ACCUM_OVF_MASK),
+	REGMAP_IRQ_REG(BD73800_INT_ADC_ACCUM_VAL, 0, BD73800_INT_ADC_ACCUM_VAL_MASK),
+	REGMAP_IRQ_REG(BD73800_INT_ADC_ACCUM_TW, 0, BD73800_INT_ADC_ACCUM_TW_MASK),
+	REGMAP_IRQ_REG(BD73800_INT_ADC_POW_VAL, 0, BD73800_INT_ADC_POW_VAL_MASK),
+	REGMAP_IRQ_REG(BD73800_INT_RTC0, 0, BD73800_INT_RTC0_MASK),
+	REGMAP_IRQ_REG(BD73800_INT_RTC1, 0, BD73800_INT_RTC1_MASK),
+	REGMAP_IRQ_REG(BD73800_INT_RTC2, 0, BD73800_INT_RTC2_MASK),
+
+	/* BUCK reg interrupts */
+	/* INT_STAT_2 IRQs */
+	REGMAP_IRQ_REG(BD73800_INT_BUCK1_DVS_DONE, 1, BD73800_INT_BUCK1_DVS_DONE_MASK),
+	REGMAP_IRQ_REG(BD73800_INT_BUCK2_DVS_DONE, 1, BD73800_INT_BUCK2_DVS_DONE_MASK),
+	REGMAP_IRQ_REG(BD73800_INT_BUCK3_DVS_DONE, 1, BD73800_INT_BUCK3_DVS_DONE_MASK),
+	REGMAP_IRQ_REG(BD73800_INT_BUCK4_DVS_DONE, 1, BD73800_INT_BUCK4_DVS_DONE_MASK),
+	REGMAP_IRQ_REG(BD73800_INT_BUCK5_DVS_DONE, 1, BD73800_INT_BUCK5_DVS_DONE_MASK),
+	REGMAP_IRQ_REG(BD73800_INT_BUCK6_DVS_DONE, 1, BD73800_INT_BUCK6_DVS_DONE_MASK),
+	REGMAP_IRQ_REG(BD73800_INT_BUCK7_DVS_DONE, 1, BD73800_INT_BUCK7_DVS_DONE_MASK),
+	REGMAP_IRQ_REG(BD73800_INT_BUCK8_DVS_DONE, 1, BD73800_INT_BUCK8_DVS_DONE_MASK),
+	/* INT_STAT_3 IRQs */
+	REGMAP_IRQ_REG(BD73800_INT_BUCK1_OCP, 2, BD73800_INT_BUCK1_OCP_MASK),
+	REGMAP_IRQ_REG(BD73800_INT_BUCK2_OCP, 2, BD73800_INT_BUCK2_OCP_MASK),
+	REGMAP_IRQ_REG(BD73800_INT_BUCK3_OCP, 2, BD73800_INT_BUCK3_OCP_MASK),
+	REGMAP_IRQ_REG(BD73800_INT_BUCK4_OCP, 2, BD73800_INT_BUCK4_OCP_MASK),
+	REGMAP_IRQ_REG(BD73800_INT_BUCK5_OCP, 2, BD73800_INT_BUCK5_OCP_MASK),
+	REGMAP_IRQ_REG(BD73800_INT_BUCK6_OCP, 2, BD73800_INT_BUCK6_OCP_MASK),
+	REGMAP_IRQ_REG(BD73800_INT_BUCK7_OCP, 2, BD73800_INT_BUCK7_OCP_MASK),
+	REGMAP_IRQ_REG(BD73800_INT_BUCK8_OCP, 2, BD73800_INT_BUCK8_OCP_MASK),
+
+	/* INT_STAT_4 IRQs, power-button, WDG and reset */
+	REGMAP_IRQ_REG(BD73800_INT_PBTN_LONG_PRESS, 3, BD73800_INT_PBTN_LONG_PRESS_MASK),
+	REGMAP_IRQ_REG(BD73800_INT_PBTN_MID_PRESS, 3, BD73800_INT_PBTN_MID_PRESS_MASK),
+	/*
+	 * The SHORT_PUSH is generated when button is first pressed (longer
+	 * than configured time limit), and then released before the MID_PRESS
+	 * time limit. The SHORT_PRESS is generated immediately when button is
+	 * pressed for longer than configured limit, whether it is released or
+	 * not.
+	 */
+	REGMAP_IRQ_REG(BD73800_INT_PBTN_SHORT_PUSH, 3, BD73800_INT_PBTN_SHORT_PUSH_MASK),
+	REGMAP_IRQ_REG(BD73800_INT_PBTN_SHORT_PRESS, 3, BD73800_INT_PBTN_SHORT_PRESS_MASK),
+	REGMAP_IRQ_REG(BD73800_INT_WDG, 3, BD73800_INT_WDG_MASK),
+	REGMAP_IRQ_REG(BD73800_INT_SWRESET, 3, BD73800_INT_SWRESET_MASK),
+	REGMAP_IRQ_REG(BD73800_INT_SEQ_DONE, 3, BD73800_INT_SEQ_DONE_MASK),
+
+	/* INT_STAT_5 IRQs, GPIO */
+	REGMAP_IRQ_REG(BD73800_INT_GPIO1, 4, BD73800_INT_GPIO1_MASK),
+	REGMAP_IRQ_REG(BD73800_INT_GPIO2, 4, BD73800_INT_GPIO2_MASK),
+	REGMAP_IRQ_REG(BD73800_INT_GPIO3, 4, BD73800_INT_GPIO3_MASK),
+	REGMAP_IRQ_REG(BD73800_INT_GPIO4, 4, BD73800_INT_GPIO4_MASK),
+};
+
 static const struct regmap_irq_chip bd71828_irq_chip = {
 	.name = "bd71828_irq",
 	.main_status = BD71828_REG_INT_MAIN,
@@ -852,6 +962,25 @@ static const struct regmap_irq_chip bd72720_irq_chip = {
 	.irq_reg_stride = 1,
 };
 
+static const struct regmap_irq_chip bd73800_irq_chip = {
+	.name = "bd73800_irq",
+	.main_status = BD73800_REG_INT_MAIN_STAT,
+	.irqs = &bd73800_irqs[0],
+	.num_irqs = ARRAY_SIZE(bd73800_irqs),
+	.status_base = BD73800_REG_INT_1_STAT,
+	.unmask_base = BD73800_REG_INT_1_EN,
+	.ack_base = BD73800_REG_INT_1_STAT,
+	.init_ack_masked = true,
+	.num_regs = 5,
+	.num_main_regs = 1,
+	/*
+	 * Ignore mirrored bits [7:5]. They are handled as part of normal INT_4
+	 * handling.
+	 */
+	.num_main_status_bits = 5,
+	.irq_reg_stride = 1,
+};
+
 static int set_clk_mode(struct device *dev, struct regmap *regmap,
 			int clkmode_reg)
 {
@@ -987,6 +1116,17 @@ static int bd71828_i2c_probe(struct i2c_client *i2c)
 		main_lvl_val = BD72720_MASK_LVL1_EN_ALL;
 		break;
 	}
+	case ROHM_CHIP_TYPE_BD73800:
+		mfd = bd73800_mfd_cells;
+		cells = ARRAY_SIZE(bd73800_mfd_cells);
+		regmap_config = &bd73800_regmap;
+		irqchip = &bd73800_irq_chip;
+		clkmode_reg = BD73800_REG_OUT32K;
+		button_irq = BD73800_INT_PBTN_SHORT_PUSH;
+		main_lvl_mask_reg = BD73800_REG_INT_MAIN_EN;
+		main_lvl_val = BD73800_INT_MAIN_EN_ALL;
+		break;
+
 	default:
 		dev_err(&i2c->dev, "Unknown device type");
 		return -EINVAL;
@@ -1066,6 +1206,9 @@ static const struct of_device_id bd71828_of_match[] = {
 	}, {
 		.compatible = "rohm,bd72720",
 		.data = (void *)ROHM_CHIP_TYPE_BD72720,
+	}, {
+		.compatible = "rohm,bd73800",
+		.data = (void *)ROHM_CHIP_TYPE_BD73800,
 	 },
 	{ },
 };
diff --git a/include/linux/mfd/rohm-bd73800.h b/include/linux/mfd/rohm-bd73800.h
new file mode 100644
index 000000000000..4bceb20ac6b1
--- /dev/null
+++ b/include/linux/mfd/rohm-bd73800.h
@@ -0,0 +1,307 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright 2024 ROHM Semiconductors.
+ *
+ * Author: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
+ */
+
+#ifndef _MFD_BD73800_H
+#define _MFD_BD73800_H
+
+#include <linux/regmap.h>
+
+enum {
+	BD73800_BUCK1	=	0,
+	BD73800_BUCK2,
+	BD73800_BUCK3,
+	BD73800_BUCK4,
+	BD73800_BUCK5,
+	BD73800_BUCK6,
+	BD73800_BUCK7,
+	BD73800_BUCK8,
+	BD73800_LDO1,
+	BD73800_LDO2,
+	BD73800_LDO3,
+	BD73800_LDO4,
+};
+
+/*
+ * All regulators except BUCK 5 have full 8-bit register of valid voltage
+ * values, including 0.
+ */
+#define BD73800_NUM_VOLTS	(0xff + 1)
+/*
+ * BUCK 5 has two sets of voltage ranges, both having valid voltage selectors
+ * from 0x0 to 0x7f
+ */
+#define BD73800_BUCK5_VOLTS	(0x80 + 0x80)
+
+/* BD73800 interrupts */
+enum {
+	/* INT_STAT_1 register IRQs, ADC and RTC */
+	BD73800_INT_ADC_ACCUM_DONE,
+	BD73800_INT_ADC_ACCUM_OVF,
+	BD73800_INT_ADC_ACCUM_VAL,
+	BD73800_INT_ADC_ACCUM_TW,
+	BD73800_INT_ADC_POW_VAL,
+	BD73800_INT_RTC0,
+	BD73800_INT_RTC1,
+	BD73800_INT_RTC2,
+
+	/* BUCK reg interrupts */
+	/* INT_STAT_2 IRQs */
+	BD73800_INT_BUCK1_DVS_DONE,
+	BD73800_INT_BUCK2_DVS_DONE,
+	BD73800_INT_BUCK3_DVS_DONE,
+	BD73800_INT_BUCK4_DVS_DONE,
+	BD73800_INT_BUCK5_DVS_DONE,
+	BD73800_INT_BUCK6_DVS_DONE,
+	BD73800_INT_BUCK7_DVS_DONE,
+	BD73800_INT_BUCK8_DVS_DONE,
+	/* INT_STAT_3 IRQs */
+	BD73800_INT_BUCK1_OCP,
+	BD73800_INT_BUCK2_OCP,
+	BD73800_INT_BUCK3_OCP,
+	BD73800_INT_BUCK4_OCP,
+	BD73800_INT_BUCK5_OCP,
+	BD73800_INT_BUCK6_OCP,
+	BD73800_INT_BUCK7_OCP,
+	BD73800_INT_BUCK8_OCP,
+
+	/* INT_STAT_4 IRQs, power-button, WDG and reset */
+	BD73800_INT_PBTN_LONG_PRESS,
+	BD73800_INT_PBTN_MID_PRESS,
+	/*
+	 * The SHORT_PUSH is generated when button is first pressed (longer
+	 * than configured time limit), and then released before the MID_PRESS
+	 * time limit. The SHORT_PRESS is generated immediately when button is
+	 * pressed for longer than configured limit, whether it is released or
+	 * not.
+	 */
+	BD73800_INT_PBTN_SHORT_PUSH,
+	BD73800_INT_PBTN_SHORT_PRESS,
+	BD73800_INT_WDG,
+	BD73800_INT_SWRESET,
+	BD73800_INT_SEQ_DONE,
+
+	/* INT_STAT_5 IRQs, GPIO */
+	BD73800_INT_GPIO1,
+	BD73800_INT_GPIO2,
+	BD73800_INT_GPIO3,
+	BD73800_INT_GPIO4,
+};
+
+#define BD73800_MASK_RUN_EN		BIT(2)
+#define BD73800_MASK_SUSP_EN		BIT(1)
+#define BD73800_MASK_IDLE_EN		BIT(0)
+#define BD73800_MASK_VOLT		GENMASK(7, 0)
+#define BD73800_MASK_BUCK5_VOLT		GENMASK(6, 0)
+#define BD73800_MASK_RAMP_DELAY		GENMASK(2, 1)
+#define BD73800_BUCK5_RANGE_MASK	BIT(7)
+
+/* BD73800 registers */
+enum {
+	BD73800_REG_PRODUCT_ID	= 0x0,
+	BD73800_REG_MANUFACTURER_ID,
+	BD73800_REG_REVISION,
+	BD73800_REG_NVMVERSION,
+	BD73800_REG_POR_REASON,
+	BD73800_REG_RESET_REASON1,
+	BD73800_REG_RESET_REASON2,
+	BD73800_REG_RESET_REASON3,
+	BD73800_REG_POW_STATE,
+	BD73800_REG_WRST_SEL,
+	BD73800_REG_PS_CTRL_1,
+	BD73800_REG_PS_CTRL_2,
+	BD73800_REG_RCVCFG,
+	BD73800_REG_RCVNUM,
+	BD73800_REG_CRDCFG, /* 0x0f, followed by undocumented reg */
+
+	BD73800_REG_BUCK1_ON = 0x11,
+	BD73800_REG_BUCK1_MODE,
+	BD73800_REG_BUCK1_VOLT_RUN,
+	BD73800_REG_BUCK1_VOLT_IDLE,
+	BD73800_REG_BUCK1_VOLT_SUSP, /* 0x15, followed by undocumented reg */
+
+	BD73800_REG_BUCK2_ON = 0x17,
+	BD73800_REG_BUCK2_MODE,
+	BD73800_REG_BUCK2_VOLT_RUN,
+	BD73800_REG_BUCK2_VOLT_IDLE,
+	BD73800_REG_BUCK2_VOLT_SUSP, /* 0x1b */
+
+	BD73800_REG_BUCK3_ON = 0x1d,
+	BD73800_REG_BUCK3_MODE,
+	BD73800_REG_BUCK3_VOLT_RUN,
+	BD73800_REG_BUCK3_VOLT_IDLE,
+	BD73800_REG_BUCK3_VOLT_SUSP, /* 0x21 */
+
+	BD73800_REG_BUCK4_ON = 0x23,
+	BD73800_REG_BUCK4_MODE,
+	BD73800_REG_BUCK4_VOLT_RUN,
+	BD73800_REG_BUCK4_VOLT_IDLE,
+	BD73800_REG_BUCK4_VOLT_SUSP, /* 0x27 */
+
+	BD73800_REG_BUCK5_ON = 0x29,
+	BD73800_REG_BUCK5_MODE,
+	BD73800_REG_BUCK5_VOLT_RUN,
+	BD73800_REG_BUCK5_VOLT_IDLE,
+	BD73800_REG_BUCK5_VOLT_SUSP, /* 0x2d */
+
+	BD73800_REG_BUCK6_ON = 0x2f,
+	BD73800_REG_BUCK6_MODE,
+	BD73800_REG_BUCK6_VOLT_RUN,
+	BD73800_REG_BUCK6_VOLT_IDLE,
+	BD73800_REG_BUCK6_VOLT_SUSP, /* 0x33 */
+
+	BD73800_REG_BUCK7_ON = 0x35,
+	BD73800_REG_BUCK7_MODE,
+	BD73800_REG_BUCK7_VOLT_RUN,
+	BD73800_REG_BUCK7_VOLT_IDLE,
+	BD73800_REG_BUCK7_VOLT_SUSP, /* 0x39 */
+
+	BD73800_REG_BUCK8_ON = 0x3b,
+	BD73800_REG_BUCK8_MODE,
+	BD73800_REG_BUCK8_VOLT_RUN,
+	BD73800_REG_BUCK8_VOLT_IDLE,
+	BD73800_REG_BUCK8_VOLT_SUSP, /* 0x3f */
+
+	BD73800_REG_LDO1_ON = 0x41,
+	BD73800_REG_LDO1_VOLT,
+	BD73800_REG_LDO1_MODE,
+	BD73800_REG_LDO2_ON,
+	BD73800_REG_LDO2_VOLT,
+	BD73800_REG_LDO2_MODE,
+	BD73800_REG_LDO3_ON,
+	BD73800_REG_LDO3_VOLT,
+	BD73800_REG_LDO3_MODE,
+	BD73800_REG_LDO4_ON,
+	BD73800_REG_LDO4_VOLT,
+	BD73800_REG_LDO4_MODE, /* 0x4c */
+
+	BD73800_REG_GPO_OUT = 0x4e,
+	BD73800_REG_OUT32K = 0x50,
+	BD73800_REG_RTC_SEC,
+	BD73800_REG_RTC_MIN,
+	BD73800_REG_RTC_HOUR,
+	BD73800_REG_RTC_WEEK,
+	BD73800_REG_RTC_DAY,
+	BD73800_REG_RTC_MONTH,
+	BD73800_REG_RTC_YEAR,
+	BD73800_REG_RTC_ALM0_SEC,
+	BD73800_REG_RTC_ALM0_MIN,
+	BD73800_REG_RTC_ALM0_HOUR,
+	BD73800_REG_RTC_ALM0_WEEK,
+	BD73800_REG_RTC_ALM0_DAY,
+	BD73800_REG_RTC_ALM0_MONTH,
+	BD73800_REG_RTC_ALM0_YEAR,
+	BD73800_REG_RTC_ALM1_SEC,
+	BD73800_REG_RTC_ALM1_MIN,
+	BD73800_REG_RTC_ALM1_HOUR,
+	BD73800_REG_RTC_ALM1_WEEK,
+	BD73800_REG_RTC_ALM1_DAY,
+	BD73800_REG_RTC_ALM1_MONTH,
+	BD73800_REG_RTC_ALM1_YEAR,
+	BD73800_REG_RTC_ALM2,
+	BD73800_REG_RTC_CONF, /* 0x69 */
+
+	BD73800_REG_ADC_CTRL_1 = 0x6b,
+	BD73800_REG_ADC_CTRL_2,
+	BD73800_REG_ADC_ACCUM_NUM2,
+	BD73800_REG_ADC_ACCUM_NUM1,
+	BD73800_REG_ADC_ACCUM_NUM0,
+	BD73800_REG_ADC_ACCUM_KICK,
+	BD73800_REG_ADC_ACCUM_CNT2,
+	BD73800_REG_ADC_ACCUM_CNT1,
+	BD73800_REG_ADC_ACCUM_CNT0,
+	BD73800_REG_ADC_ACCUM_VAL2,
+	BD73800_REG_ADC_ACCUM_VAL1,
+	BD73800_REG_ADC_ACCUM_VAL0,
+	BD73800_REG_ADC_VOL_VAL1,
+	BD73800_REG_ADC_VOL_VAL0,
+	BD73800_REG_ADC_CUR_VAL1,
+	BD73800_REG_ADC_CUR_VAL0,
+	BD73800_REG_ADC_POW_VAL1,
+	BD73800_REG_ADC_POW_VAL0,
+	BD73800_REG_ADC_TEMP_VAL1,
+	BD73800_REG_ADC_TEMP_VAL0,
+	BD73800_REG_ADC_ACCUM_VAL_INT_TH4,
+	BD73800_REG_ADC_ACCUM_VAL_INT_TH3,
+	BD73800_REG_ADC_ACCUM_VAL_INT_TH2,
+	BD73800_REG_ADC_ACCUM_VAL_INT_TH1,
+	BD73800_REG_ADC_ACCUM_VAL_INT_TH0,
+	BD73800_REG_ADC_WARN_TEMP_INT_TH1,
+	BD73800_REG_ADC_WARN_TEMP_INT_TH0,
+	BD73800_REG_ADC_POW_VAL_INT_TH1,
+	BD73800_REG_ADC_POW_VAL_INT_TH0, /* 0x89 */
+
+	BD73800_REG_PBTN_CONF = 0x8b,
+
+	BD73800_REG_INT_MAIN_EN = 0x8f,
+	BD73800_REG_INT_1_EN,
+	BD73800_REG_INT_2_EN,
+	BD73800_REG_INT_3_EN,
+	BD73800_REG_INT_4_EN,
+	BD73800_REG_INT_5_EN, /* 0x94 */
+
+	BD73800_REG_INT_MAIN_STAT = 0x96,
+	BD73800_REG_INT_1_STAT,
+	BD73800_REG_INT_2_STAT,
+	BD73800_REG_INT_3_STAT,
+	BD73800_REG_INT_4_STAT,
+	BD73800_REG_INT_5_STAT, /* 0x9b */
+
+	BD73800_REG_INT_MAIN_SRC = 0x9d,
+	BD73800_REG_INT_1_SRC,
+	BD73800_REG_INT_2_SRC,
+	BD73800_REG_INT_3_SRC,
+	BD73800_REG_INT_4_SRC,
+	BD73800_REG_INT_5_SRC, /* 0xa2 */
+
+	BD73800_REG_RST_MASK = 0xaf,
+	BD73800_MAX_REGISTER,
+};
+
+#define BD73800_REG_RTC_START			BD73800_REG_RTC_SEC
+#define BD73800_REG_RTC_ALM_START		BD73800_REG_RTC_ALM0_SEC
+
+/* BD73800 IRQ register masks */
+
+#define BD73800_INT_MAIN_EN_ALL			GENMASK(4, 0)
+#define BD73800_INT_ADC_ACCUM_DONE_MASK		BIT(0)
+#define BD73800_INT_ADC_ACCUM_OVF_MASK		BIT(1)
+#define BD73800_INT_ADC_ACCUM_VAL_MASK		BIT(2)
+#define BD73800_INT_ADC_ACCUM_TW_MASK		BIT(3)
+#define BD73800_INT_ADC_POW_VAL_MASK		BIT(4)
+#define BD73800_INT_RTC0_MASK			BIT(5)
+#define BD73800_INT_RTC1_MASK			BIT(6)
+#define BD73800_INT_RTC2_MASK			BIT(7)
+#define BD73800_INT_BUCK1_DVS_DONE_MASK		BIT(0)
+#define BD73800_INT_BUCK2_DVS_DONE_MASK		BIT(1)
+#define BD73800_INT_BUCK3_DVS_DONE_MASK		BIT(2)
+#define BD73800_INT_BUCK4_DVS_DONE_MASK		BIT(3)
+#define BD73800_INT_BUCK5_DVS_DONE_MASK		BIT(4)
+#define BD73800_INT_BUCK6_DVS_DONE_MASK		BIT(5)
+#define BD73800_INT_BUCK7_DVS_DONE_MASK		BIT(6)
+#define BD73800_INT_BUCK8_DVS_DONE_MASK		BIT(7)
+#define BD73800_INT_BUCK1_OCP_MASK		BIT(0)
+#define BD73800_INT_BUCK2_OCP_MASK		BIT(1)
+#define BD73800_INT_BUCK3_OCP_MASK		BIT(2)
+#define BD73800_INT_BUCK4_OCP_MASK		BIT(3)
+#define BD73800_INT_BUCK5_OCP_MASK		BIT(4)
+#define BD73800_INT_BUCK6_OCP_MASK		BIT(5)
+#define BD73800_INT_BUCK7_OCP_MASK		BIT(6)
+#define BD73800_INT_BUCK8_OCP_MASK		BIT(7)
+#define BD73800_INT_PBTN_LONG_PRESS_MASK	BIT(0)
+#define BD73800_INT_PBTN_MID_PRESS_MASK		BIT(1)
+#define BD73800_INT_PBTN_SHORT_PUSH_MASK	BIT(2)
+#define BD73800_INT_PBTN_SHORT_PRESS_MASK	BIT(3)
+#define BD73800_INT_WDG_MASK			BIT(4)
+#define BD73800_INT_SWRESET_MASK		BIT(5)
+#define BD73800_INT_SEQ_DONE_MASK		BIT(6)
+#define BD73800_INT_GPIO1_MASK			BIT(0)
+#define BD73800_INT_GPIO2_MASK			BIT(1)
+#define BD73800_INT_GPIO3_MASK			BIT(2)
+#define BD73800_INT_GPIO4_MASK			BIT(3)
+
+#endif /* _MFD_BD73800_H */
+
diff --git a/include/linux/mfd/rohm-generic.h b/include/linux/mfd/rohm-generic.h
index 0a284919a6c3..3ec87428ee97 100644
--- a/include/linux/mfd/rohm-generic.h
+++ b/include/linux/mfd/rohm-generic.h
@@ -17,6 +17,7 @@ enum rohm_chip_type {
 	ROHM_CHIP_TYPE_BD71837,
 	ROHM_CHIP_TYPE_BD71847,
 	ROHM_CHIP_TYPE_BD72720,
+	ROHM_CHIP_TYPE_BD73800,
 	ROHM_CHIP_TYPE_BD96801,
 	ROHM_CHIP_TYPE_BD96802,
 	ROHM_CHIP_TYPE_BD96805,
-- 
2.54.0


[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 488 bytes --]

[PATCH 4/8] rtc: bd70528: Support RTC on ROHM BD73800

[Matti Vaittinen]

[-- Attachment #1: Type: text/plain, Size: 1676 bytes --]

From: Matti Vaittinen <mazziesaccount@gmail.com>

BD73800 contains similar RTC block as BD71828 and BD71815. Only the address
offsets seem different. Support also BD73800 RTC using the rtc-bd70528.

Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
---
 drivers/rtc/rtc-bd70528.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/rtc/rtc-bd70528.c b/drivers/rtc/rtc-bd70528.c
index 482810b61495..fd415e327ea6 100644
--- a/drivers/rtc/rtc-bd70528.c
+++ b/drivers/rtc/rtc-bd70528.c
@@ -8,6 +8,7 @@
 #include <linux/mfd/rohm-bd71815.h>
 #include <linux/mfd/rohm-bd71828.h>
 #include <linux/mfd/rohm-bd72720.h>
+#include <linux/mfd/rohm-bd73800.h>
 #include <linux/module.h>
 #include <linux/of.h>
 #include <linux/platform_device.h>
@@ -284,6 +285,12 @@ static int bd70528_probe(struct platform_device *pdev)
 		bd_rtc->bd718xx_alm_block_start = BD72720_REG_RTC_ALM_START;
 		hour_reg = BD72720_REG_RTC_HOUR;
 		break;
+	case ROHM_CHIP_TYPE_BD73800:
+		bd_rtc->reg_time_start = BD73800_REG_RTC_START;
+		bd_rtc->bd718xx_alm_block_start = BD73800_REG_RTC_ALM_START;
+		hour_reg = BD73800_REG_RTC_HOUR;
+		break;
+
 	default:
 		dev_err(&pdev->dev, "Unknown chip\n");
 		return -ENOENT;
@@ -344,6 +351,7 @@ static const struct platform_device_id bd718x7_rtc_id[] = {
 	{ .name = "bd71828-rtc", .driver_data = ROHM_CHIP_TYPE_BD71828 },
 	{ .name = "bd71815-rtc", .driver_data = ROHM_CHIP_TYPE_BD71815 },
 	{ .name = "bd72720-rtc", .driver_data = ROHM_CHIP_TYPE_BD72720 },
+	{ .name = "bd73800-rtc", .driver_data = ROHM_CHIP_TYPE_BD73800 },
 	{ }
 };
 MODULE_DEVICE_TABLE(platform, bd718x7_rtc_id);
-- 
2.54.0


[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 488 bytes --]

Re: [PATCH 4/8] rtc: bd70528: Support RTC on ROHM BD73800

[Alexandre Belloni]

On 01/07/2026 15:42:20+0300, Matti Vaittinen wrote:
> From: Matti Vaittinen <mazziesaccount@gmail.com>
> 
> BD73800 contains similar RTC block as BD71828 and BD71815. Only the address
> offsets seem different. Support also BD73800 RTC using the rtc-bd70528.
> 
> Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

> ---
>  drivers/rtc/rtc-bd70528.c | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/drivers/rtc/rtc-bd70528.c b/drivers/rtc/rtc-bd70528.c
> index 482810b61495..fd415e327ea6 100644
> --- a/drivers/rtc/rtc-bd70528.c
> +++ b/drivers/rtc/rtc-bd70528.c
> @@ -8,6 +8,7 @@
>  #include <linux/mfd/rohm-bd71815.h>
>  #include <linux/mfd/rohm-bd71828.h>
>  #include <linux/mfd/rohm-bd72720.h>
> +#include <linux/mfd/rohm-bd73800.h>
>  #include <linux/module.h>
>  #include <linux/of.h>
>  #include <linux/platform_device.h>
> @@ -284,6 +285,12 @@ static int bd70528_probe(struct platform_device *pdev)
>  		bd_rtc->bd718xx_alm_block_start = BD72720_REG_RTC_ALM_START;
>  		hour_reg = BD72720_REG_RTC_HOUR;
>  		break;
> +	case ROHM_CHIP_TYPE_BD73800:
> +		bd_rtc->reg_time_start = BD73800_REG_RTC_START;
> +		bd_rtc->bd718xx_alm_block_start = BD73800_REG_RTC_ALM_START;
> +		hour_reg = BD73800_REG_RTC_HOUR;
> +		break;
> +
>  	default:
>  		dev_err(&pdev->dev, "Unknown chip\n");
>  		return -ENOENT;
> @@ -344,6 +351,7 @@ static const struct platform_device_id bd718x7_rtc_id[] = {
>  	{ .name = "bd71828-rtc", .driver_data = ROHM_CHIP_TYPE_BD71828 },
>  	{ .name = "bd71815-rtc", .driver_data = ROHM_CHIP_TYPE_BD71815 },
>  	{ .name = "bd72720-rtc", .driver_data = ROHM_CHIP_TYPE_BD72720 },
> +	{ .name = "bd73800-rtc", .driver_data = ROHM_CHIP_TYPE_BD73800 },
>  	{ }
>  };
>  MODULE_DEVICE_TABLE(platform, bd718x7_rtc_id);
> -- 
> 2.54.0
> 



-- 
Alexandre Belloni, co-owner and COO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

[PATCH 5/8] regulator: bd71828: Support ROHM BD73800

[Matti Vaittinen]

[-- Attachment #1: Type: text/plain, Size: 23837 bytes --]

From: Matti Vaittinen <mazziesaccount@gmail.com>

The ROHM BD73800 is a power management IC which integrates 8 BUCKs and 4
LDOs. The PMIC has internal state-machine and it can support transitions
to RUN, SUSPEND and IDLE states. The LDOs 1 and 3 have two different
voltage range configurations that can be set at the manufacturing phase
by OTP. By default driver assumes low voltage ranges to be used because
the data-sheet indicates the higher voltage ranges to be an 'OTP option'.
The high voltage range can be indicated via device-tree property.

Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
---
 drivers/regulator/Kconfig             |   4 +-
 drivers/regulator/bd71828-regulator.c | 555 +++++++++++++++++++++++++-
 2 files changed, 556 insertions(+), 3 deletions(-)

diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index a54a549196fe..0e5a3994f49d 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -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
diff --git a/drivers/regulator/bd71828-regulator.c b/drivers/regulator/bd71828-regulator.c
index bd61caa8284a..89738953f8b5 100644
--- a/drivers/regulator/bd71828-regulator.c
+++ b/drivers/regulator/bd71828-regulator.c
@@ -1,7 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0-only
 // Copyright (C) 2019 ROHM Semiconductors
 // bd71828-regulator.c ROHM BD71828GW-DS1 regulator driver
-//
 
 #include <linux/cleanup.h>
 #include <linux/delay.h>
@@ -10,6 +9,7 @@
 #include <linux/kernel.h>
 #include <linux/mfd/rohm-bd71828.h>
 #include <linux/mfd/rohm-bd72720.h>
+#include <linux/mfd/rohm-bd73800.h>
 #include <linux/module.h>
 #include <linux/mod_devicetable.h>
 #include <linux/of.h>
@@ -32,6 +32,13 @@ struct bd71828_regulator_data {
 	int reg_init_amnt;
 };
 
+/*
+ * LDO1 and LDO3 node names are used also in the driver to find OTP setting for
+ * the used voltage range.
+ */
+#define LDO1_NODE_NAME "ldo1"
+#define LDO3_NODE_NAME "ldo3"
+
 static const struct reg_init bd71828_buck1_inits[] = {
 	/*
 	 * DVS Buck voltages can be changed by register values or via GPIO.
@@ -173,6 +180,54 @@ static const struct linear_range bd72720_ldo6_volts[] = {
 	REGULATOR_LINEAR_RANGE(1800000, 0x79, 0x7f, 0),
 };
 
+static const struct linear_range bd73800_buck12348_volts[] = {
+	REGULATOR_LINEAR_RANGE(500000, 0x00, 0x50, 10000),
+	REGULATOR_LINEAR_RANGE(1300000, 0x51, 0xff, 0),
+};
+
+static const unsigned int bd73800_buck5_volt_range_sel[] = {
+	0x0, 0x0, 0x1, 0x1,
+};
+
+static const struct linear_range bd73800_buck5_volts[] = {
+	/* range selector 0 */
+	REGULATOR_LINEAR_RANGE(500000, 0x00, 0x50, 10000),
+	REGULATOR_LINEAR_RANGE(1300000, 0x51, 0x7f, 0),
+	/* range selector 1 */
+	REGULATOR_LINEAR_RANGE(300000, 0x00, 0x46, 10000),
+	REGULATOR_LINEAR_RANGE(1000000, 0x47, 0x7f, 0),
+};
+/*
+ * iBUCK5 has two different pickable ranges, each having voltages matching
+ * selectors 0x0 to 0x7f. This gives 0x7f + 1 different voltages for each of
+ * the ranges.
+ */
+#define BD73800_NUM_BUCK5_VOLTS ((0x7f + 1) * 2)
+
+static const struct linear_range bd73800_buck67_volts[] = {
+	REGULATOR_LINEAR_RANGE(1500000, 0x00, 0xc8, 10000),
+	REGULATOR_LINEAR_RANGE(3500000, 0xc9, 0xff, 0),
+};
+
+/*
+ * On the BD73800 the LDO1 and LDO3 support two different voltage areas.
+ * Whether to use 'high' or 'low' ranges is configured by OTP. There seems
+ * to be no register to read the configured area so it must be given via
+ * device-tree properties.
+ */
+static const struct linear_range bd73800_ldo13_low_volts[] = {
+	REGULATOR_LINEAR_RANGE(600000, 0x00, 0x78, 10000),
+	REGULATOR_LINEAR_RANGE(1800000, 0x79, 0xff, 0),
+};
+
+static const struct linear_range bd73800_ldo13_high_volts[] = {
+	REGULATOR_LINEAR_RANGE(750000, 0x00, 0xff, 10000),
+};
+
+static const struct linear_range bd73800_ldo24_volts[] = {
+	REGULATOR_LINEAR_RANGE(750000, 0x00, 0xff, 10000),
+};
+
 static const unsigned int bd71828_ramp_delay[] = { 2500, 5000, 10000, 20000 };
 
 /*
@@ -226,6 +281,36 @@ static int bd71828_ldo6_parse_dt(struct device_node *np,
 	return 0;
 }
 
+/* Operations for all other BUCKs but BUCK 5 */
+static const struct regulator_ops bd73800_buck_ops = {
+	.enable = regulator_enable_regmap,
+	.disable = regulator_disable_regmap,
+	.is_enabled = regulator_is_enabled_regmap,
+	.list_voltage = regulator_list_voltage_linear_range,
+	.set_voltage_sel = regulator_set_voltage_sel_regmap,
+	.get_voltage_sel = regulator_get_voltage_sel_regmap,
+	.set_ramp_delay = regulator_set_ramp_delay_regmap,
+};
+
+static const struct regulator_ops bd73800_buck5_ops = {
+	.enable = regulator_enable_regmap,
+	.disable = regulator_disable_regmap,
+	.is_enabled = regulator_is_enabled_regmap,
+	.list_voltage = regulator_list_voltage_pickable_linear_range,
+	.set_voltage_sel = regulator_set_voltage_sel_pickable_regmap,
+	.get_voltage_sel = regulator_get_voltage_sel_pickable_regmap,
+	.set_ramp_delay = regulator_set_ramp_delay_regmap,
+};
+
+static const struct regulator_ops bd73800_ldo_ops = {
+	.enable = regulator_enable_regmap,
+	.disable = regulator_disable_regmap,
+	.is_enabled = regulator_is_enabled_regmap,
+	.list_voltage = regulator_list_voltage_linear_range,
+	.set_voltage_sel = regulator_set_voltage_sel_regmap,
+	.get_voltage_sel = regulator_get_voltage_sel_regmap,
+};
+
 static const struct regulator_ops bd71828_buck_ops = {
 	.enable = regulator_enable_regmap,
 	.disable = regulator_disable_regmap,
@@ -1566,6 +1651,412 @@ static const struct bd71828_regulator_data bd72720_rdata[] = {
 	},
 };
 
+static const struct bd71828_regulator_data bd73800_rdata[] = {
+	{
+		.desc = {
+			.name = "buck1",
+			.of_match = of_match_ptr("buck1"),
+			.regulators_node = of_match_ptr("regulators"),
+			.id = BD73800_BUCK1,
+			.ops = &bd73800_buck_ops,
+			.type = REGULATOR_VOLTAGE,
+			.linear_ranges = bd73800_buck12348_volts,
+			.n_linear_ranges = ARRAY_SIZE(bd73800_buck12348_volts),
+			.n_voltages = BD73800_NUM_VOLTS,
+			.enable_reg = BD73800_REG_BUCK1_ON,
+			.enable_mask = BD73800_MASK_RUN_EN,
+			.vsel_reg = BD73800_REG_BUCK1_VOLT_RUN,
+			.vsel_mask = BD73800_MASK_VOLT,
+			.ramp_delay_table = bd71828_ramp_delay,
+			.n_ramp_values = ARRAY_SIZE(bd71828_ramp_delay),
+			.ramp_reg = BD73800_REG_BUCK1_MODE,
+			.ramp_mask = BD73800_MASK_RAMP_DELAY,
+			.owner = THIS_MODULE,
+			.of_parse_cb = buck_set_hw_dvs_levels,
+		},
+		.dvs = {
+			.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
+				     ROHM_DVS_LEVEL_SUSPEND,
+			.run_reg = BD73800_REG_BUCK1_VOLT_RUN,
+			.run_mask = BD73800_MASK_VOLT,
+			.idle_reg = BD73800_REG_BUCK1_VOLT_IDLE,
+			.idle_mask = BD73800_MASK_VOLT,
+			.idle_on_mask = BD73800_MASK_IDLE_EN,
+			.suspend_reg = BD73800_REG_BUCK1_VOLT_SUSP,
+			.suspend_mask = BD73800_MASK_VOLT,
+			.suspend_on_mask = BD73800_MASK_SUSP_EN,
+		},
+	}, {
+		.desc = {
+			.name = "buck2",
+			.of_match = of_match_ptr("buck2"),
+			.regulators_node = of_match_ptr("regulators"),
+			.id = BD73800_BUCK2,
+			.ops = &bd73800_buck_ops,
+			.type = REGULATOR_VOLTAGE,
+			.linear_ranges = bd73800_buck12348_volts,
+			.n_linear_ranges = ARRAY_SIZE(bd73800_buck12348_volts),
+			.n_voltages = BD73800_NUM_VOLTS,
+			.enable_reg = BD73800_REG_BUCK2_ON,
+			.enable_mask = BD73800_MASK_RUN_EN,
+			.vsel_reg = BD73800_REG_BUCK2_VOLT_RUN,
+			.vsel_mask = BD73800_MASK_VOLT,
+			.ramp_delay_table = bd71828_ramp_delay,
+			.n_ramp_values = ARRAY_SIZE(bd71828_ramp_delay),
+			.ramp_reg = BD73800_REG_BUCK2_MODE,
+			.ramp_mask = BD73800_MASK_RAMP_DELAY,
+			.owner = THIS_MODULE,
+			.of_parse_cb = buck_set_hw_dvs_levels,
+		},
+		.dvs = {
+			.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
+				     ROHM_DVS_LEVEL_SUSPEND,
+			.run_reg = BD73800_REG_BUCK2_VOLT_RUN,
+			.run_mask = BD73800_MASK_VOLT,
+			.idle_reg = BD73800_REG_BUCK2_VOLT_IDLE,
+			.idle_mask = BD73800_MASK_VOLT,
+			.idle_on_mask = BD73800_MASK_IDLE_EN,
+			.suspend_reg = BD73800_REG_BUCK2_VOLT_SUSP,
+			.suspend_mask = BD73800_MASK_VOLT,
+			.suspend_on_mask = BD73800_MASK_SUSP_EN,
+		},
+	}, {
+		.desc = {
+			.name = "buck3",
+			.of_match = of_match_ptr("buck3"),
+			.regulators_node = of_match_ptr("regulators"),
+			.id = BD73800_BUCK3,
+			.ops = &bd73800_buck_ops,
+			.type = REGULATOR_VOLTAGE,
+			.linear_ranges = bd73800_buck12348_volts,
+			.n_linear_ranges = ARRAY_SIZE(bd73800_buck12348_volts),
+			.n_voltages = BD73800_NUM_VOLTS,
+			.enable_reg = BD73800_REG_BUCK3_ON,
+			.enable_mask = BD73800_MASK_RUN_EN,
+			.vsel_reg = BD73800_REG_BUCK3_VOLT_RUN,
+			.vsel_mask = BD73800_MASK_VOLT,
+			.ramp_delay_table = bd71828_ramp_delay,
+			.n_ramp_values = ARRAY_SIZE(bd71828_ramp_delay),
+			.ramp_reg = BD73800_REG_BUCK3_MODE,
+			.ramp_mask = BD73800_MASK_RAMP_DELAY,
+			.owner = THIS_MODULE,
+			.of_parse_cb = buck_set_hw_dvs_levels,
+		},
+		.dvs = {
+			.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
+				     ROHM_DVS_LEVEL_SUSPEND,
+			.run_reg = BD73800_REG_BUCK3_VOLT_RUN,
+			.run_mask = BD73800_MASK_VOLT,
+			.idle_reg = BD73800_REG_BUCK3_VOLT_IDLE,
+			.idle_mask = BD73800_MASK_VOLT,
+			.idle_on_mask = BD73800_MASK_IDLE_EN,
+			.suspend_reg = BD73800_REG_BUCK3_VOLT_SUSP,
+			.suspend_mask = BD73800_MASK_VOLT,
+			.suspend_on_mask = BD73800_MASK_SUSP_EN,
+		},
+
+	}, {
+		.desc = {
+			.name = "buck4",
+			.of_match = of_match_ptr("buck4"),
+			.regulators_node = of_match_ptr("regulators"),
+			.id = BD73800_BUCK4,
+			.ops = &bd73800_buck_ops,
+			.type = REGULATOR_VOLTAGE,
+			.linear_ranges = bd73800_buck12348_volts,
+			.n_linear_ranges = ARRAY_SIZE(bd73800_buck12348_volts),
+			.n_voltages = BD73800_NUM_VOLTS,
+			.enable_reg = BD73800_REG_BUCK4_ON,
+			.enable_mask = BD73800_MASK_RUN_EN,
+			.vsel_reg = BD73800_REG_BUCK4_VOLT_RUN,
+			.vsel_mask = BD73800_MASK_VOLT,
+			.ramp_delay_table = bd71828_ramp_delay,
+			.n_ramp_values = ARRAY_SIZE(bd71828_ramp_delay),
+			.ramp_reg = BD73800_REG_BUCK4_MODE,
+			.ramp_mask = BD73800_MASK_RAMP_DELAY,
+			.owner = THIS_MODULE,
+			.of_parse_cb = buck_set_hw_dvs_levels,
+		},
+		.dvs = {
+			.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
+				     ROHM_DVS_LEVEL_SUSPEND,
+			.run_reg = BD73800_REG_BUCK4_VOLT_RUN,
+			.run_mask = BD73800_MASK_VOLT,
+			.idle_reg = BD73800_REG_BUCK4_VOLT_IDLE,
+			.idle_mask = BD73800_MASK_VOLT,
+			.idle_on_mask = BD73800_MASK_IDLE_EN,
+			.suspend_reg = BD73800_REG_BUCK4_VOLT_SUSP,
+			.suspend_mask = BD73800_MASK_VOLT,
+			.suspend_on_mask = BD73800_MASK_SUSP_EN,
+		},
+	}, {
+		.desc = {
+			.name = "buck5",
+			.of_match = of_match_ptr("buck5"),
+			.regulators_node = of_match_ptr("regulators"),
+			.id = BD73800_BUCK5,
+			.ops = &bd73800_buck5_ops,
+			.type = REGULATOR_VOLTAGE,
+			.linear_ranges = bd73800_buck5_volts,
+			.n_linear_ranges = ARRAY_SIZE(bd73800_buck5_volts),
+			.linear_range_selectors_bitfield =
+						bd73800_buck5_volt_range_sel,
+			.n_voltages = BD73800_NUM_BUCK5_VOLTS,
+			.enable_reg = BD73800_REG_BUCK5_ON,
+			.enable_mask = BD73800_MASK_RUN_EN,
+			.vsel_reg = BD73800_REG_BUCK5_VOLT_RUN,
+			.vsel_mask = BD73800_MASK_VOLT,
+			.vsel_range_reg = BD73800_REG_BUCK5_MODE,
+			.vsel_range_mask = BD73800_BUCK5_RANGE_MASK,
+			.range_applied_by_vsel = true,
+			.ramp_delay_table = bd71828_ramp_delay,
+			.n_ramp_values = ARRAY_SIZE(bd71828_ramp_delay),
+			.ramp_reg = BD73800_REG_BUCK5_MODE,
+			.ramp_mask = BD73800_MASK_RAMP_DELAY,
+			.owner = THIS_MODULE,
+		},
+		.dvs = {
+			/*
+			 * We don't support setting the IDLE / SUSPEND voltages
+			 * for the BUCK 5 for now. Reason is that the pickable
+			 * range selector bit is common for all states (RUN,
+			 * SUSPEND and IDLE), and toggling it for one impacts
+			 * also others.
+			 * Furthermore, writing the BD73800 range selector does
+			 * not impact the RUN voltage until a new voltage value
+			 * is also written to the vsel register. Hence the
+			 * voltage change can be done without any 'intermediate
+			 * voltages', even when the range is changed when the
+			 * BUCK is enabled.
+			 * It, however, is not documented how the IDLE / SUSPEND
+			 * states work in this regard. I expect the full
+			 * combination of the range selector and vsel is taken
+			 * into account at the state change, no matter when they
+			 * have been written to.
+			 */
+			.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
+				     ROHM_DVS_LEVEL_SUSPEND,
+			.run_reg = BD73800_REG_BUCK5_VOLT_RUN,
+			.run_mask = BD73800_MASK_VOLT,
+			.idle_on_mask = BD73800_MASK_IDLE_EN,
+			.suspend_on_mask = BD73800_MASK_SUSP_EN,
+		},
+
+	}, {
+		.desc = {
+			.name = "buck6",
+			.of_match = of_match_ptr("buck6"),
+			.regulators_node = of_match_ptr("regulators"),
+			.id = BD73800_BUCK6,
+			.ops = &bd73800_buck_ops,
+			.type = REGULATOR_VOLTAGE,
+			.linear_ranges = bd73800_buck67_volts,
+			.n_linear_ranges = ARRAY_SIZE(bd73800_buck67_volts),
+			.n_voltages = BD73800_NUM_VOLTS,
+			.enable_reg = BD73800_REG_BUCK6_ON,
+			.enable_mask = BD73800_MASK_RUN_EN,
+			.vsel_reg = BD73800_REG_BUCK6_VOLT_RUN,
+			.vsel_mask = BD73800_MASK_VOLT,
+			.ramp_delay_table = bd71828_ramp_delay,
+			.n_ramp_values = ARRAY_SIZE(bd71828_ramp_delay),
+			.ramp_reg = BD73800_REG_BUCK6_MODE,
+			.ramp_mask = BD73800_MASK_RAMP_DELAY,
+			.owner = THIS_MODULE,
+			.of_parse_cb = buck_set_hw_dvs_levels,
+		},
+		.dvs = {
+			.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
+				     ROHM_DVS_LEVEL_SUSPEND,
+			.run_reg = BD73800_REG_BUCK6_VOLT_RUN,
+			.run_mask = BD73800_MASK_VOLT,
+			.idle_reg = BD73800_REG_BUCK6_VOLT_IDLE,
+			.idle_mask = BD73800_MASK_VOLT,
+			.idle_on_mask = BD73800_MASK_IDLE_EN,
+			.suspend_reg = BD73800_REG_BUCK6_VOLT_SUSP,
+			.suspend_mask = BD73800_MASK_VOLT,
+			.suspend_on_mask = BD73800_MASK_SUSP_EN,
+		},
+	}, {
+		.desc = {
+			.name = "buck7",
+			.of_match = of_match_ptr("buck7"),
+			.regulators_node = of_match_ptr("regulators"),
+			.id = BD73800_BUCK7,
+			.ops = &bd73800_buck_ops,
+			.type = REGULATOR_VOLTAGE,
+			.linear_ranges = bd73800_buck67_volts,
+			.n_linear_ranges = ARRAY_SIZE(bd73800_buck67_volts),
+			.n_voltages = BD73800_NUM_VOLTS,
+			.enable_reg = BD73800_REG_BUCK7_ON,
+			.enable_mask = BD73800_MASK_RUN_EN,
+			.vsel_reg = BD73800_REG_BUCK7_VOLT_RUN,
+			.vsel_mask = BD73800_MASK_VOLT,
+			.ramp_delay_table = bd71828_ramp_delay,
+			.n_ramp_values = ARRAY_SIZE(bd71828_ramp_delay),
+			.ramp_reg = BD73800_REG_BUCK7_MODE,
+			.ramp_mask = BD73800_MASK_RAMP_DELAY,
+			.owner = THIS_MODULE,
+			.of_parse_cb = buck_set_hw_dvs_levels,
+		},
+		.dvs = {
+			.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
+				     ROHM_DVS_LEVEL_SUSPEND,
+			.run_reg = BD73800_REG_BUCK7_VOLT_RUN,
+			.run_mask = BD73800_MASK_VOLT,
+			.idle_reg = BD73800_REG_BUCK7_VOLT_IDLE,
+			.idle_mask = BD73800_MASK_VOLT,
+			.idle_on_mask = BD73800_MASK_IDLE_EN,
+			.suspend_reg = BD73800_REG_BUCK7_VOLT_SUSP,
+			.suspend_mask = BD73800_MASK_VOLT,
+			.suspend_on_mask = BD73800_MASK_SUSP_EN,
+		},
+	}, {
+		.desc = {
+			.name = "buck8",
+			.of_match = of_match_ptr("buck8"),
+			.regulators_node = of_match_ptr("regulators"),
+			.id = BD73800_BUCK8,
+			.ops = &bd73800_buck_ops,
+			.type = REGULATOR_VOLTAGE,
+			.linear_ranges = bd73800_buck12348_volts,
+			.n_linear_ranges = ARRAY_SIZE(bd73800_buck12348_volts),
+			.n_voltages = BD73800_NUM_VOLTS,
+			.enable_reg = BD73800_REG_BUCK8_ON,
+			.enable_mask = BD73800_MASK_RUN_EN,
+			.vsel_reg = BD73800_REG_BUCK8_VOLT_RUN,
+			.vsel_mask = BD73800_MASK_VOLT,
+			.ramp_delay_table = bd71828_ramp_delay,
+			.n_ramp_values = ARRAY_SIZE(bd71828_ramp_delay),
+			.ramp_reg = BD73800_REG_BUCK8_MODE,
+			.ramp_mask = BD73800_MASK_RAMP_DELAY,
+			.owner = THIS_MODULE,
+			.of_parse_cb = buck_set_hw_dvs_levels,
+		},
+		.dvs = {
+			.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
+				     ROHM_DVS_LEVEL_SUSPEND,
+			.run_reg = BD73800_REG_BUCK8_VOLT_RUN,
+			.run_mask = BD73800_MASK_VOLT,
+			.idle_reg = BD73800_REG_BUCK8_VOLT_IDLE,
+			.idle_mask = BD73800_MASK_VOLT,
+			.idle_on_mask = BD73800_MASK_IDLE_EN,
+			.suspend_reg = BD73800_REG_BUCK8_VOLT_SUSP,
+			.suspend_mask = BD73800_MASK_VOLT,
+			.suspend_on_mask = BD73800_MASK_SUSP_EN,
+		},
+	}, {
+		.desc = {
+			.name = "ldo1",
+			.of_match = of_match_ptr(LDO1_NODE_NAME),
+			.regulators_node = of_match_ptr("regulators"),
+			.id = BD73800_LDO1,
+			.ops = &bd73800_ldo_ops,
+			.type = REGULATOR_VOLTAGE,
+			.linear_ranges = bd73800_ldo13_low_volts,
+			.n_linear_ranges = ARRAY_SIZE(bd73800_ldo13_low_volts),
+			.n_voltages = BD73800_NUM_VOLTS,
+			.enable_reg = BD73800_REG_LDO1_ON,
+			.enable_mask = BD73800_MASK_RUN_EN,
+			.vsel_reg = BD73800_REG_LDO1_VOLT,
+			.vsel_mask = BD73800_MASK_VOLT,
+			.owner = THIS_MODULE,
+			.of_parse_cb = buck_set_hw_dvs_levels,
+		},
+		.dvs = {
+			/*
+			 * LDOs support only single voltage for all states.
+			 * Voltage can be individually enabled for each state
+			 * though. Allow setting enable/disable config by
+			 * setting the <state>_on_mask for all supported states.
+			 */
+			.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
+				     ROHM_DVS_LEVEL_SUSPEND,
+			.run_reg = BD73800_REG_LDO1_VOLT,
+			.run_mask = BD73800_MASK_VOLT,
+			.idle_on_mask = BD73800_MASK_IDLE_EN,
+			.suspend_on_mask = BD73800_MASK_SUSP_EN,
+		},
+	}, {
+		.desc = {
+			.name = "ldo2",
+			.of_match = of_match_ptr("ldo2"),
+			.regulators_node = of_match_ptr("regulators"),
+			.id = BD73800_LDO2,
+			.ops = &bd73800_ldo_ops,
+			.type = REGULATOR_VOLTAGE,
+			.linear_ranges = bd73800_ldo24_volts,
+			.n_linear_ranges = ARRAY_SIZE(bd73800_ldo24_volts),
+			.n_voltages = BD73800_NUM_VOLTS,
+			.enable_reg = BD73800_REG_LDO2_ON,
+			.enable_mask = BD73800_MASK_RUN_EN,
+			.vsel_reg = BD73800_REG_LDO2_VOLT,
+			.vsel_mask = BD73800_MASK_VOLT,
+			.owner = THIS_MODULE,
+			.of_parse_cb = buck_set_hw_dvs_levels,
+		},
+		.dvs = {
+			.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
+				     ROHM_DVS_LEVEL_SUSPEND,
+			.run_reg = BD73800_REG_LDO2_VOLT,
+			.run_mask = BD73800_MASK_VOLT,
+			.idle_on_mask = BD73800_MASK_IDLE_EN,
+			.suspend_on_mask = BD73800_MASK_SUSP_EN,
+		},
+	}, {
+		.desc = {
+			.name = "ldo3",
+			.of_match = of_match_ptr(LDO3_NODE_NAME),
+			.regulators_node = of_match_ptr("regulators"),
+			.id = BD73800_LDO3,
+			.ops = &bd73800_ldo_ops,
+			.type = REGULATOR_VOLTAGE,
+			.linear_ranges = bd73800_ldo13_low_volts,
+			.n_linear_ranges = ARRAY_SIZE(bd73800_ldo13_low_volts),
+			.n_voltages = BD73800_NUM_VOLTS,
+			.enable_reg = BD73800_REG_LDO3_ON,
+			.enable_mask = BD73800_MASK_RUN_EN,
+			.vsel_reg = BD73800_REG_LDO3_VOLT,
+			.vsel_mask = BD73800_MASK_VOLT,
+			.owner = THIS_MODULE,
+			.of_parse_cb = buck_set_hw_dvs_levels,
+		},
+		.dvs = {
+			.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
+				     ROHM_DVS_LEVEL_SUSPEND,
+			.run_reg = BD73800_REG_LDO3_VOLT,
+			.run_mask = BD73800_MASK_VOLT,
+			.idle_on_mask = BD73800_MASK_IDLE_EN,
+			.suspend_on_mask = BD73800_MASK_SUSP_EN,
+		},
+	}, {
+		.desc = {
+			.name = "ldo4",
+			.of_match = of_match_ptr("ldo4"),
+			.regulators_node = of_match_ptr("regulators"),
+			.id = BD73800_LDO4,
+			.ops = &bd73800_ldo_ops,
+			.type = REGULATOR_VOLTAGE,
+			.linear_ranges = bd73800_ldo24_volts,
+			.n_linear_ranges = ARRAY_SIZE(bd73800_ldo24_volts),
+			.n_voltages = BD73800_NUM_VOLTS,
+			.enable_reg = BD73800_REG_LDO4_ON,
+			.enable_mask = BD73800_MASK_RUN_EN,
+			.vsel_reg = BD73800_REG_LDO4_VOLT,
+			.vsel_mask = BD73800_MASK_VOLT,
+			.owner = THIS_MODULE,
+			.of_parse_cb = buck_set_hw_dvs_levels,
+		},
+		.dvs = {
+			.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
+				     ROHM_DVS_LEVEL_SUSPEND,
+			.run_reg = BD73800_REG_LDO4_VOLT,
+			.run_mask = BD73800_MASK_VOLT,
+			.idle_on_mask = BD73800_MASK_IDLE_EN,
+			.suspend_on_mask = BD73800_MASK_SUSP_EN,
+		},
+	},
+};
+
 static int bd72720_buck10_ldon_head_mode(struct device *dev,
 					 struct device_node *npreg,
 					 struct regmap *regmap,
@@ -1620,6 +2111,50 @@ static int bd72720_dt_parse(struct device *dev,
 	return bd72720_buck10_ldon_head_mode(dev, nproot, regmap, buck10_desc);
 }
 
+static int bd73800_check_ldo_otp_options(struct device *dev,
+					 struct bd71828_regulator_data *d,
+					 unsigned int num_reg_data)
+{
+	bool ldo1_use_high_range = false, ldo3_use_high_range = false;
+	struct device_node *nproot = dev->parent->of_node;
+	struct device_node *np;
+
+	/*
+	 * The code assumes regulator IDs to start from 0 and to match the
+	 * indexing of regulator data arrays. WARN if someone changes this.
+	 */
+	WARN_ON(d[BD73800_LDO1].desc.id != BD73800_LDO1);
+	WARN_ON(d[BD73800_LDO3].desc.id != BD73800_LDO3);
+
+	nproot = of_get_child_by_name(nproot, "regulators");
+	if (!nproot) {
+		dev_err(dev, "failed to find regulators node\n");
+		return -ENODEV;
+	}
+	for_each_child_of_node(nproot, np) {
+		if (of_node_name_eq(np, LDO1_NODE_NAME))
+			ldo1_use_high_range = of_property_read_bool(np,
+							"rohm,ldo-range-high");
+		if (of_node_name_eq(np, LDO3_NODE_NAME))
+			ldo3_use_high_range = of_property_read_bool(np,
+							"rohm,ldo-range-high");
+	}
+	of_node_put(nproot);
+
+	if (ldo1_use_high_range) {
+		d[BD73800_LDO1].desc.linear_ranges = bd73800_ldo13_high_volts;
+		d[BD73800_LDO1].desc.n_linear_ranges =
+					ARRAY_SIZE(bd73800_ldo13_high_volts);
+	}
+	if (ldo3_use_high_range) {
+		d[BD73800_LDO3].desc.linear_ranges = bd73800_ldo13_high_volts;
+		d[BD73800_LDO3].desc.n_linear_ranges =
+					ARRAY_SIZE(bd73800_ldo13_high_volts);
+	}
+
+	return 0;
+}
+
 static int bd71828_probe(struct platform_device *pdev)
 {
 	int i, j, ret, num_regulators;
@@ -1657,6 +2192,23 @@ static int bd71828_probe(struct platform_device *pdev)
 		num_regulators = ARRAY_SIZE(bd71828_rdata);
 
 		break;
+
+	case ROHM_CHIP_TYPE_BD73800:
+	{
+		rdata = devm_kmemdup(&pdev->dev, bd73800_rdata, sizeof(bd73800_rdata),
+			     GFP_KERNEL);
+		if (!rdata)
+			return -ENOMEM;
+
+		num_regulators = ARRAY_SIZE(bd73800_rdata);
+
+		ret = bd73800_check_ldo_otp_options(&pdev->dev, rdata,
+						    num_regulators);
+		if (ret)
+			return ret;
+
+		break;
+	}
 	default:
 		return dev_err_probe(&pdev->dev, -EINVAL,
 				     "Unsupported device\n");
@@ -1693,6 +2245,7 @@ static int bd71828_probe(struct platform_device *pdev)
 static const struct platform_device_id bd71828_pmic_id[] = {
 	{ .name = "bd71828-pmic", .driver_data = ROHM_CHIP_TYPE_BD71828 },
 	{ .name = "bd72720-pmic", .driver_data = ROHM_CHIP_TYPE_BD72720 },
+	{ .name = "bd73800-pmic", .driver_data = ROHM_CHIP_TYPE_BD73800 },
 	{ }
 };
 MODULE_DEVICE_TABLE(platform, bd71828_pmic_id);
-- 
2.54.0


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Re: [PATCH 5/8] regulator: bd71828: Support ROHM BD73800

[Mark Brown]

[-- Attachment #1: Type: text/plain, Size: 1138 bytes --]

On Wed, Jul 01, 2026 at 03:42:35PM +0300, Matti Vaittinen wrote:
> From: Matti Vaittinen <mazziesaccount@gmail.com>

> +	nproot = of_get_child_by_name(nproot, "regulators");
> +	if (!nproot) {
> +		dev_err(dev, "failed to find regulators node\n");
> +		return -ENODEV;
> +	}
> +	for_each_child_of_node(nproot, np) {
> +		if (of_node_name_eq(np, LDO1_NODE_NAME))
> +			ldo1_use_high_range = of_property_read_bool(np,
> +							"rohm,ldo-range-high");
> +		if (of_node_name_eq(np, LDO3_NODE_NAME))
> +			ldo3_use_high_range = of_property_read_bool(np,
> +							"rohm,ldo-range-high");
> +	}

Why do we iterate over all nodes rather than doing additional
of_get_child_by_name()s?

> +	if (ldo1_use_high_range) {
> +		d[BD73800_LDO1].desc.linear_ranges = bd73800_ldo13_high_volts;
> +		d[BD73800_LDO1].desc.n_linear_ranges =
> +					ARRAY_SIZE(bd73800_ldo13_high_volts);
> +	}
> +	if (ldo3_use_high_range) {
> +		d[BD73800_LDO3].desc.linear_ranges = bd73800_ldo13_high_volts;
> +		d[BD73800_LDO3].desc.n_linear_ranges =
> +					ARRAY_SIZE(bd73800_ldo13_high_volts);
> +	}

You could just do these updates without the intermediate variables.

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Re: [PATCH 5/8] regulator: bd71828: Support ROHM BD73800

[Matti Vaittinen]

On 01/07/2026 16:01, Mark Brown wrote:
> On Wed, Jul 01, 2026 at 03:42:35PM +0300, Matti Vaittinen wrote:
>> From: Matti Vaittinen <mazziesaccount@gmail.com>
> 
>> +	nproot = of_get_child_by_name(nproot, "regulators");
>> +	if (!nproot) {
>> +		dev_err(dev, "failed to find regulators node\n");
>> +		return -ENODEV;
>> +	}
>> +	for_each_child_of_node(nproot, np) {
>> +		if (of_node_name_eq(np, LDO1_NODE_NAME))
>> +			ldo1_use_high_range = of_property_read_bool(np,
>> +							"rohm,ldo-range-high");
>> +		if (of_node_name_eq(np, LDO3_NODE_NAME))
>> +			ldo3_use_high_range = of_property_read_bool(np,
>> +							"rohm,ldo-range-high");
>> +	}
> 
> Why do we iterate over all nodes rather than doing additional
> of_get_child_by_name()s?

This series has been sitting in my "TODO" -folder for quite a while - so 
I am not anymore 100% sure as to why. I believe I've thought that the 
of_get_child_by_name() does (internally) iterate all the child nodes, so 
using it twice would cause code to loop through the nodes twice. So, 
looping through all child nodes in a single loop probably felt like the 
right thing to do. Furthermore, I've probably written the first version 
before I found out the cleanup.h...

But yes. I think you're right. This can be made much leaner.

>> +	if (ldo1_use_high_range) {
>> +		d[BD73800_LDO1].desc.linear_ranges = bd73800_ldo13_high_volts;
>> +		d[BD73800_LDO1].desc.n_linear_ranges =
>> +					ARRAY_SIZE(bd73800_ldo13_high_volts);
>> +	}
>> +	if (ldo3_use_high_range) {
>> +		d[BD73800_LDO3].desc.linear_ranges = bd73800_ldo13_high_volts;
>> +		d[BD73800_LDO3].desc.n_linear_ranges =
>> +					ARRAY_SIZE(bd73800_ldo13_high_volts);
>> +	}
> 
> You could just do these updates without the intermediate variables.

Yes.

Thanks for the suggestions! I will fix these for the v2, but it will 
probably be out only during August.

Yours,
	-- Matti

-- 
Matti Vaittinen
Linux kernel developer at ROHM Semiconductors
Oulu Finland

~~ When things go utterly wrong vim users can always type :help! ~~

[PATCH 6/8] clk: bd718x7: Support ROHM BD73800

[Matti Vaittinen]

[-- Attachment #1: Type: text/plain, Size: 1515 bytes --]

From: Matti Vaittinen <mazziesaccount@gmail.com>

The ROHM BD73800 PMIC has a 32.768 kHz clock gate. Add support for
controlling this clock.

NOTE: The CLKOUT pin can be muxed by an OTP option. On some OTP
configurations the CLKOUT is not outputting the clk signal.

Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
---
 drivers/clk/clk-bd718x7.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/clk/clk-bd718x7.c b/drivers/clk/clk-bd718x7.c
index 1cae974e6d1d..2dc6b8e46f18 100644
--- a/drivers/clk/clk-bd718x7.c
+++ b/drivers/clk/clk-bd718x7.c
@@ -21,6 +21,9 @@
 #define BD718XX_REG_OUT32K	0x2E
 /* BD72720 */
 #define BD72720_REG_OUT32K	0x9a
+/* BD73800 */
+#define BD73800_REG_OUT32K	0x50
+
 /*
  * BD71837, BD71847, and BD71828 all use bit [0] to clk output control
  */
@@ -123,6 +126,10 @@ static int bd71837_clk_probe(struct platform_device *pdev)
 		c->reg = BD72720_REG_OUT32K;
 		c->mask = CLK_OUT_EN_MASK;
 		break;
+	case ROHM_CHIP_TYPE_BD73800:
+		c->reg = BD73800_REG_OUT32K;
+		c->mask = CLK_OUT_EN_MASK;
+		break;
 	default:
 		dev_err(&pdev->dev, "Unknown clk chip\n");
 		return -EINVAL;
@@ -152,6 +159,7 @@ static const struct platform_device_id bd718x7_clk_id[] = {
 	{ "bd71828-clk", ROHM_CHIP_TYPE_BD71828 },
 	{ "bd71815-clk", ROHM_CHIP_TYPE_BD71815 },
 	{ "bd72720-clk", ROHM_CHIP_TYPE_BD72720 },
+	{ "bd73800-clk", ROHM_CHIP_TYPE_BD73800 },
 	{ },
 };
 MODULE_DEVICE_TABLE(platform, bd718x7_clk_id);
-- 
2.54.0


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[PATCH 7/8] gpio: bd73800: Support ROHM BD73800 PMIC GPIOs

[Matti Vaittinen]

[-- Attachment #1: Type: text/plain, Size: 10185 bytes --]

From: Matti Vaittinen <mazziesaccount@gmail.com>

The ROHM BD73800 PMIC has 4 pins (named GPIO1, CLKOUT, FAULT_B and
EXTEN_OUT) which might have been set to operate as a GPI or GPO when OTP
(One Time Programmable memory) is written at device manufacturing.
Support the GPI/GPO use-case via GPIO framework.

The default OTP for these pins is to not use any of them as GPI or GPO.
(The GPIO1 defaults as an ADC input regardless the naming). Hence the
driver assumes none of these pins is a GPI/GPO unless explicitly pointed
as GPI or GPO via device tree.

Furthermore, pin's direction can't be changed after OTP configuration is
done. Also the default drive type for a GPO (CMOS / Open Drain) is set
by the OTP configuration. The BD73800 has a set of undocumented test
registers which should allow changing the drive type. Access to the test
register area or the test registers aren't documented and so this driver
does not support configuring the drive type even though it might be
doable.

Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
---
 drivers/gpio/Kconfig        |  11 ++
 drivers/gpio/Makefile       |   1 +
 drivers/gpio/gpio-bd73800.c | 234 ++++++++++++++++++++++++++++++++++++
 3 files changed, 246 insertions(+)
 create mode 100644 drivers/gpio/gpio-bd73800.c

diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 28cf6d2e83c2..09d87c3b756f 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -1363,6 +1363,17 @@ 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
+	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
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index 4d0e900402fc..3041c06aa933 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -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
diff --git a/drivers/gpio/gpio-bd73800.c b/drivers/gpio/gpio-bd73800.c
new file mode 100644
index 000000000000..3fe4b7f167b8
--- /dev/null
+++ b/drivers/gpio/gpio-bd73800.c
@@ -0,0 +1,234 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Support to GPIOs on ROHM BD73800
+ * Copyright 2024 ROHM Semiconductors.
+ * Author: Matti Vaittinen <mazziesaccount@gmail.com>
+ */
+
+#include <linux/gpio/driver.h>
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/mfd/rohm-bd73800.h>
+
+#define BD73800_GPIO_MAX_PINS 4
+/*
+ * The BD73800 has several "one time programmable" (OTP) configurations which
+ * can be set at manufacturing phase. Some of these options allow using
+ * individual pins as GPI or GPO (not both at the same time). The OTP
+ * configuration can't be read at run-time, so drivers rely on device-tree to
+ * advertise the OTP programmed in manufacturing.
+ *
+ * The pins which can be used as GPIO are:
+ * GPIO1, CLKOUT (GPIO2), FAULT_B, EXTEN_OUT.
+ *
+ * The OTP options 2 and 3 state for all the pins:
+ *  - OTP2: GPI (also IRQ source)
+ *  - OTP3: GPO (NOTE: This is actually 2 different OTP options. Either a
+ *    register controllable output or a power-sequence controlled output.
+ *    The "gpo" referred here means only the register controllable output.
+ *    The datasheet refers to this as: "<pin> output is controlled by
+ *    GPIO<N>_OUT or power on/off sequencer to control external VRs. ON/OFF
+ *    sequence timing is configurable."
+ *
+ * The data-sheet further says that the GPI/GPO is not a default OTP
+ * configuration for any of the pins. Hence the GPIO driver defaults to a pin
+ * not being a GPI or GPO, but requires the pin to be explicitly marked as a
+ * GPI or GPO in the device-tree.
+ *
+ * DT properties:
+ * "rohm,pin-gpio1", "rohm,pin-clkout", "rohm,pin-fault-b", "rohm,pin-exten"
+ * can be set to one of the values "gpi" or "gpo" to enable them to be used as
+ * GPIO.
+ */
+
+enum bd73800_gpio_state {
+	BD73800_PIN_UNKNOWN,
+	BD73800_PIN_GPI,
+	BD73800_PIN_GPO,
+};
+
+struct bd73800_gpio_pin_cfg {
+	enum bd73800_gpio_state state;
+	int mask; /* GPIO_OUT and INT_SRC have same bit offsets for GPIO */
+};
+
+struct bd73800_gpio {
+	/* chip.parent points the MFD which provides DT node and regmap */
+	struct gpio_chip chip;
+	struct bd73800_gpio_pin_cfg pin[BD73800_GPIO_MAX_PINS];
+	int num_pins;
+	/* dev points to the platform device for devm and prints */
+	struct device *dev;
+	struct regmap *regmap;
+};
+
+static int bd73800_gpio_get_pins(struct bd73800_gpio *g)
+{
+	static const char * const properties[] = {"rohm,pin-gpio1",
+		"rohm,pin-clkout", "rohm,pin-fault-b", "rohm,pin-exten"};
+	const char *val;
+	int i, ret;
+
+	for (i = 0; i < ARRAY_SIZE(properties); i++) {
+		ret = fwnode_property_read_string(dev_fwnode(g->dev->parent),
+						  properties[i], &val);
+
+		if (ret) {
+			if (ret == -EINVAL)
+				continue;
+
+			return dev_err_probe(g->dev, ret,
+					"pin %d (%s), bad configuration\n", i,
+					properties[i]);
+		}
+
+		if (strcmp(val, "gpi") == 0) {
+			g->pin[g->num_pins].state = BD73800_PIN_GPI;
+			g->pin[g->num_pins].mask = BIT(i);
+			g->num_pins++;
+		} else if (strcmp(val, "gpo") == 0) {
+			g->pin[g->num_pins].state = BD73800_PIN_GPO;
+			g->pin[g->num_pins].mask = BIT(i);
+			g->num_pins++;
+		}
+	}
+
+	return 0;
+}
+
+static int bd73800gpio_get(struct gpio_chip *chip, unsigned int offset)
+{
+	struct bd73800_gpio *bdgpio = gpiochip_get_data(chip);
+	struct bd73800_gpio_pin_cfg *pin = &bdgpio->pin[offset];
+	int ret, val;
+
+	/* Only pins configured as GPI via OTP can have their status read */
+	if (pin->state != BD73800_PIN_GPI) {
+		dev_dbg(bdgpio->dev, "pin %d (%x) not input. State %d\n",
+			offset, pin->mask, pin->state);
+		return -EINVAL;
+	}
+
+	ret = regmap_read(bdgpio->regmap, BD73800_REG_INT_5_SRC, &val);
+	if (ret)
+		return ret;
+
+	return val & pin->mask;
+}
+
+static int bd73800gpo_set(struct gpio_chip *chip, unsigned int offset,
+			  int value)
+{
+	struct bd73800_gpio *bdgpio = gpiochip_get_data(chip);
+	struct bd73800_gpio_pin_cfg *pin = &bdgpio->pin[offset];
+
+	if (pin->state != BD73800_PIN_GPO) {
+		dev_dbg(bdgpio->dev, "pin %d (%d) not output. State %d\n",
+			offset, pin->mask, pin->state);
+
+		return -EINVAL;
+	}
+
+	if (value)
+		return regmap_set_bits(bdgpio->regmap, BD73800_REG_GPO_OUT,
+				       pin->mask);
+
+	return regmap_clear_bits(bdgpio->regmap, BD73800_REG_GPO_OUT, pin->mask);
+}
+
+static int bd73800gpio_direction_get(struct gpio_chip *chip,
+				    unsigned int offset)
+{
+	struct bd73800_gpio *bdgpio = gpiochip_get_data(chip);
+
+	if (bdgpio->pin[offset].state == BD73800_PIN_GPO)
+		return GPIO_LINE_DIRECTION_OUT;
+
+	return GPIO_LINE_DIRECTION_IN;
+}
+
+/*
+ * Template for GPIO chip. The BD73800 GPO supports both CMOS and open drain
+ * configurations. The default however depends on the OTP. The runtime config
+ * can be done via undocumented test registers - but at the moment there is no
+ * support for this.
+ *
+ * NOTE: When the BD73800 GPIO pins are used as IRQ source, the users are
+ * expected to request them directly from the regmap_irq IRQ-chip (implemented
+ * in the MFD driver). This way we don't need to populate another IRQ-chip
+ * here.
+ */
+static const struct gpio_chip bd73800gpio_chip = {
+	.label			= "bd73800",
+	.owner			= THIS_MODULE,
+	.get			= bd73800gpio_get,
+	.get_direction		= bd73800gpio_direction_get,
+	.set			= bd73800gpo_set,
+	.can_sleep		= true,
+};
+
+static int gpo_bd73800_probe(struct platform_device *pdev)
+{
+	struct bd73800_gpio *g;
+	struct device *parent, *dev;
+	int ret;
+
+	/*
+	 * Bind devm lifetime to this platform device => use dev for devm.
+	 * also the prints should originate from this device.
+	 */
+	dev = &pdev->dev;
+	/* The device-tree and regmap come from MFD => use parent for that */
+	parent = dev->parent;
+
+	g = devm_kzalloc(dev, sizeof(*g), GFP_KERNEL);
+	if (!g)
+		return -ENOMEM;
+
+	g->chip = bd73800gpio_chip;
+	g->chip.base = -1;
+	g->chip.parent = parent;
+	g->regmap = dev_get_regmap(parent, NULL);
+	g->dev = dev;
+
+	ret = bd73800_gpio_get_pins(g);
+	if (ret)
+		return ret;
+
+	if (!g->num_pins) {
+		/*
+		 * The BD73800 may or may not have pins allocated for GPIO
+		 * depending on the OTP used at manufacturing. Free the memory
+		 * and go out if there is no pins as then we have nothing to do
+		 */
+		dev_dbg(dev, "no GPIO pins\n");
+		devm_kfree(dev, g);
+		return 0;
+	}
+	g->chip.ngpio = g->num_pins;
+
+	return devm_gpiochip_add_data(dev, &g->chip, g);
+}
+
+static const struct platform_device_id bd73800_gpio_id[] = {
+	{ "bd73800-gpio" },
+	{ },
+};
+MODULE_DEVICE_TABLE(platform, bd73800_gpio_id);
+
+static struct platform_driver gpo_bd73800_driver = {
+	.driver = {
+		.name = "bd73800-gpio",
+		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
+	},
+	.probe = gpo_bd73800_probe,
+	.id_table = bd73800_gpio_id,
+};
+module_platform_driver(gpo_bd73800_driver);
+
+MODULE_AUTHOR("Matti Vaittinen <mazziesaccount@gmail.com>");
+MODULE_DESCRIPTION("GPIO interface for BD73800");
+MODULE_LICENSE("GPL");
-- 
2.54.0


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[PATCH 8/8] MAINTAINERS: Add ROHM BD73800 PMIC files

[Matti Vaittinen]

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From: Matti Vaittinen <mazziesaccount@gmail.com>

Add the undersigned as a maintainer for the ROHM BD73800 PMIC related
files.

Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
---
 MAINTAINERS | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/MAINTAINERS b/MAINTAINERS
index 15011f5752a9..92795b08bc52 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -23539,6 +23539,7 @@ 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
@@ -23556,6 +23557,7 @@ 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
-- 
2.54.0


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