Commit a045f357 authored by Matti Vaittinen's avatar Matti Vaittinen Committed by Lee Jones
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dt-bindings: bd718x7: Yamlify and add BD71850 



Convert ROHM bd71837 and bd71847 PMIC binding text docs to yaml. Split
the binding document to two separate documents (own documents for BD71837
and BD71847) as they have different amount of regulators. This way we can
better enforce the node name check for regulators. ROHM is also providing
BD71850 - which is almost identical to BD71847 - main difference is some
initial regulator states. The BD71850 can be driven by same driver and it
has same buck/LDO setup as BD71847 - add it to BD71847 binding document and
introduce compatible for it.

Signed-off-by: default avatarMatti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Reviewed-by: default avatarRob Herring <robh@kernel.org>
Acked-by: default avatarMark Brown <broonie@kernel.org>
Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
parent fb945c95

Documentation/devicetree/bindings/mfd/rohm,bd71837-pmic.txt

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* ROHM BD71837 and BD71847 Power Management Integrated Circuit bindings



BD71837MWV and BD71847MWV are programmable Power Management ICs for powering

single-core, dual-core, and quad-core SoCs such as NXP-i.MX 8M. They are

optimized for low BOM cost and compact solution footprint. BD71837MWV

integrates 8 Buck regulators and 7 LDOs. BD71847MWV contains 6 Buck regulators

and 6 LDOs.



Datasheet for BD71837 is available at:

https://www.rohm.com/datasheet/BD71837MWV/bd71837mwv-e

Datasheet for BD71847 is available at:

https://www.rohm.com/datasheet/BD71847AMWV/bd71847amwv-e



Required properties:

 - compatible		: Should be "rohm,bd71837" for bd71837

				    "rohm,bd71847" for bd71847.

 - reg			: I2C slave address.

 - interrupt-parent	: Phandle to the parent interrupt controller.

 - interrupts		: The interrupt line the device is connected to.

 - clocks		: The parent clock connected to PMIC. If this is missing

			  32768 KHz clock is assumed.

 - #clock-cells		: Should be 0.

 - regulators:		: List of child nodes that specify the regulators.

			  Please see ../regulator/rohm,bd71837-regulator.txt



Optional properties:

- clock-output-names	: Should contain name for output clock.

- rohm,reset-snvs-powered : Transfer BD718x7 to SNVS state at reset.



The BD718x7 supports two different HW states as reset target states. States

are called as SNVS and READY. At READY state all the PMIC power outputs go

down and OTP is reload. At the SNVS state all other logic and external

devices apart from the SNVS power domain are shut off. Please refer to NXP

i.MX8 documentation for further information regarding SNVS state. When a

reset is done via SNVS state the PMIC OTP data is not reload. This causes

power outputs that have been under SW control to stay down when reset has

switched power state to SNVS. If reset is done via READY state the power

outputs will be returned to HW control by OTP loading. Thus the reset

target state is set to READY by default. If SNVS state is used the boot

crucial regulators must have the regulator-always-on and regulator-boot-on

properties set in regulator node.



- rohm,short-press-ms	: Short press duration in milliseconds

- rohm,long-press-ms	: Long press duration in milliseconds



Configure the "short press" and "long press" timers for the power button.

Values are rounded to what hardware supports (500ms multiple for short and

1000ms multiple for long). If these properties are not present the existing

configuration (from bootloader or OTP) is not touched.



Example:



	/* external oscillator node */

	osc: oscillator {

		compatible = "fixed-clock";

		#clock-cells = <1>;

		clock-frequency  = <32768>;

		clock-output-names = "osc";

	};



	pmic: pmic@4b {

		compatible = "rohm,bd71837";

		reg = <0x4b>;

		interrupt-parent = <&gpio1>;

		interrupts = <29 GPIO_ACTIVE_LOW>;

		interrupt-names = "irq";

		#clock-cells = <0>;

		clocks = <&osc 0>;

		clock-output-names = "bd71837-32k-out";

		rohm,reset-snvs-powered;



		regulators {

			buck1: BUCK1 {

				regulator-name = "buck1";

				regulator-min-microvolt = <700000>;

				regulator-max-microvolt = <1300000>;

				regulator-boot-on;

				regulator-always-on;

				regulator-ramp-delay = <1250>;

			};

			// [...]

		};

	};



	/* Clock consumer node */

	rtc@0 {

		compatible = "company,my-rtc";

		clock-names = "my-clock";

		clocks = <&pmic>;

	};

Documentation/devicetree/bindings/mfd/rohm,bd71837-pmic.yaml

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# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause

%YAML 1.2

---

$id: http://devicetree.org/schemas/mfd/rohm,bd71837-pmic.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#



title: ROHM BD71837 Power Management Integrated Circuit bindings



maintainers:

  - Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>



description: |

  BD71837MWV is programmable Power Management ICs for powering single-core,

  dual-core, and quad-core SoCs such as NXP-i.MX 8M. It is optimized for low

  BOM cost and compact solution footprint. BD71837MWV  integrates 8 Buck

  regulators and 7 LDOs.

  Datasheet for BD71837 is available at

  https://www.rohm.com/products/power-management/power-management-ic-for-system/industrial-consumer-applications/nxp-imx/bd71837amwv-product



properties:

  compatible:

    const: rohm,bd71837



  reg:

    description:

      I2C slave address.

    maxItems: 1



  interrupts:

    maxItems: 1



  clocks:

    maxItems: 1



  "#clock-cells":

    const: 0



# The BD718x7 supports two different HW states as reset target states. States

# are called as SNVS and READY. At READY state all the PMIC power outputs go

# down and OTP is reload. At the SNVS state all other logic and external

# devices apart from the SNVS power domain are shut off. Please refer to NXP

# i.MX8 documentation for further information regarding SNVS state. When a

# reset is done via SNVS state the PMIC OTP data is not reload. This causes

# power outputs that have been under SW control to stay down when reset has

# switched power state to SNVS. If reset is done via READY state the power

# outputs will be returned to HW control by OTP loading. Thus the reset

# target state is set to READY by default. If SNVS state is used the boot

# crucial regulators must have the regulator-always-on and regulator-boot-on

# properties set in regulator node.



  rohm,reset-snvs-powered:

    description: |

      Transfer PMIC to SNVS state at reset

    type: boolean



# Configure the "short press" and "long press" timers for the power button.

# Values are rounded to what hardware supports

# Short-press:

#   Shortest being 10ms, next 500ms and then multiple of 500ms up to 7,5s

# Long-press:

#   Shortest being 10ms, next 1000ms and then multiple of 1000ms up to 15s

# If these properties are not present the existing configuration (from

# bootloader or OTP) is not touched.



  rohm,short-press-ms:

    description:

      Short press duration in milliseconds

    enum:

      - 10

      - 500

      - 1000

      - 1500

      - 2000

      - 2500

      - 3000

      - 3500

      - 4000

      - 4500

      - 5000

      - 5500

      - 6000

      - 6500

      - 7000



  rohm,long-press-ms:

    description:

      Long press duration in milliseconds

    enum:

      - 10

      - 1000

      - 2000

      - 3000

      - 4000

      - 5000

      - 6000

      - 7000

      - 8000

      - 9000

      - 10000

      - 11000

      - 12000

      - 13000

      - 14000



  regulators:

    $ref: ../regulator/rohm,bd71837-regulator.yaml

    description:

      List of child nodes that specify the regulators.



required:

  - compatible

  - reg

  - interrupts

  - clocks

  - "#clock-cells"

  - regulators



additionalProperties: false



examples:

  - |

    #include <dt-bindings/interrupt-controller/irq.h>

    #include <dt-bindings/leds/common.h>



    i2c {

      pmic: pmic@4b {

            compatible = "rohm,bd71837";

            reg = <0x4b>;

            interrupt-parent = <&gpio1>;

            interrupts = <29 IRQ_TYPE_LEVEL_LOW>;

            #clock-cells = <0>;

            clocks = <&osc 0>;

            rohm,reset-snvs-powered;

            rohm,short-press-ms = <10>;

            rohm,long-press-ms = <2000>;



            regulators {

                buck1: BUCK1 {

                    regulator-name = "buck1";

                    regulator-min-microvolt = <700000>;

                    regulator-max-microvolt = <1300000>;

                    regulator-boot-on;

                    regulator-always-on;

                    regulator-ramp-delay = <1250>;

                    rohm,dvs-run-voltage = <900000>;

                    rohm,dvs-idle-voltage = <850000>;

                    rohm,dvs-suspend-voltage = <800000>;

                };

                buck2: BUCK2 {

                    regulator-name = "buck2";

                    regulator-min-microvolt = <700000>;

                    regulator-max-microvolt = <1300000>;

                    regulator-boot-on;

                    regulator-always-on;

                    regulator-ramp-delay = <1250>;

                    rohm,dvs-run-voltage = <1000000>;

                    rohm,dvs-idle-voltage = <900000>;

                };

                buck3: BUCK3 {

                    regulator-name = "buck3";

                    regulator-min-microvolt = <700000>;

                    regulator-max-microvolt = <1300000>;

                    regulator-boot-on;

                    rohm,dvs-run-voltage = <1000000>;

                };

                buck4: BUCK4 {

                    regulator-name = "buck4";

                    regulator-min-microvolt = <700000>;

                    regulator-max-microvolt = <1300000>;

                    regulator-boot-on;

                    rohm,dvs-run-voltage = <1000000>;

                };

                buck5: BUCK5 {

                    regulator-name = "buck5";

                    regulator-min-microvolt = <700000>;

                    regulator-max-microvolt = <1350000>;

                    regulator-boot-on;

                };

                buck6: BUCK6 {

                    regulator-name = "buck6";

                    regulator-min-microvolt = <3000000>;

                    regulator-max-microvolt = <3300000>;

                    regulator-boot-on;

                };

                buck7: BUCK7 {

                    regulator-name = "buck7";

                    regulator-min-microvolt = <1605000>;

                    regulator-max-microvolt = <1995000>;

                    regulator-boot-on;

                };

                buck8: BUCK8 {

                    regulator-name = "buck8";

                    regulator-min-microvolt = <800000>;

                    regulator-max-microvolt = <1400000>;

                };



                ldo1: LDO1 {

                    regulator-name = "ldo1";

                    regulator-min-microvolt = <3000000>;

                    regulator-max-microvolt = <3300000>;

                    regulator-boot-on;

                };

                ldo2: LDO2 {

                    regulator-name = "ldo2";

                    regulator-min-microvolt = <900000>;

                    regulator-max-microvolt = <900000>;

                    regulator-boot-on;

                };

                ldo3: LDO3 {

                    regulator-name = "ldo3";

                    regulator-min-microvolt = <1800000>;

                    regulator-max-microvolt = <3300000>;

                };

                ldo4: LDO4 {

                    regulator-name = "ldo4";

                    regulator-min-microvolt = <900000>;

                    regulator-max-microvolt = <1800000>;

                };

                ldo5: LDO5 {

                    regulator-name = "ldo5";

                    regulator-min-microvolt = <1800000>;

                    regulator-max-microvolt = <3300000>;

                };

                ldo6: LDO6 {

                    regulator-name = "ldo6";

                    regulator-min-microvolt = <900000>;

                    regulator-max-microvolt = <1800000>;

                };

                ldo7_reg: LDO7 {

                    regulator-name = "ldo7";

                    regulator-min-microvolt = <1800000>;

                    regulator-max-microvolt = <3300000>;

                };

            };

        };

    };

Documentation/devicetree/bindings/mfd/rohm,bd71847-pmic.yaml

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# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause

%YAML 1.2

---

$id: http://devicetree.org/schemas/mfd/rohm,bd71847-pmic.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#



title: ROHM BD71847 and BD71850 Power Management Integrated Circuit bindings



maintainers:

  - Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>



description: |

  BD71847AMWV and BD71850MWV are programmable Power Management ICs for powering

  single-core,  dual-core, and quad-core SoCs such as NXP-i.MX 8M. It is

  optimized for low BOM cost and compact solution footprint. BD71847MWV and

  BD71850MWV integrate 6 Buck regulators and 6 LDOs.

  Datasheets are available at

  https://www.rohm.com/products/power-management/power-management-ic-for-system/industrial-consumer-applications/nxp-imx/bd71847amwv-product

  https://www.rohm.com/products/power-management/power-management-ic-for-system/industrial-consumer-applications/nxp-imx/bd71850mwv-product



properties:

  compatible:

    enum:

      - rohm,bd71847

      - rohm,bd71850



  reg:

    description:

      I2C slave address.

    maxItems: 1



  interrupts:

    maxItems: 1



  clocks:

    maxItems: 1



  "#clock-cells":

    const: 0



# The BD71847 abd BD71850 support two different HW states as reset target

# states. States are called as SNVS and READY. At READY state all the PMIC

# power outputs go down and OTP is reload. At the SNVS state all other logic

# and external devices apart from the SNVS power domain are shut off. Please

# refer to NXP i.MX8 documentation for further information regarding SNVS

# state. When a reset is done via SNVS state the PMIC OTP data is not reload.

# This causes power outputs that have been under SW control to stay down when

# reset has switched power state to SNVS. If reset is done via READY state the

# power outputs will be returned to HW control by OTP loading. Thus the reset

# target state is set to READY by default. If SNVS state is used the boot

# crucial regulators must have the regulator-always-on and regulator-boot-on

# properties set in regulator node.



  rohm,reset-snvs-powered:

    description:

      Transfer PMIC to SNVS state at reset.

    type: boolean



# Configure the "short press" and "long press" timers for the power button.

# Values are rounded to what hardware supports

# Short-press:

#   Shortest being 10ms, next 500ms and then multiple of 500ms up to 7,5s

# Long-press:

#   Shortest being 10ms, next 1000ms and then multiple of 1000ms up to 15s

# If these properties are not present the existing # configuration (from

# bootloader or OTP) is not touched.



  rohm,short-press-ms:

    description:

      Short press duration in milliseconds

    enum:

      - 10

      - 500

      - 1000

      - 1500

      - 2000

      - 2500

      - 3000

      - 3500

      - 4000

      - 4500

      - 5000

      - 5500

      - 6000

      - 6500

      - 7000

      - 7500



  rohm,long-press-ms:

    description:

      Long press duration in milliseconds

    enum:

      - 10

      - 1000

      - 2000

      - 3000

      - 4000

      - 5000

      - 6000

      - 7000

      - 8000

      - 9000

      - 10000

      - 11000

      - 12000

      - 13000

      - 14000

      - 15000



  regulators:

    $ref: ../regulator/rohm,bd71847-regulator.yaml

    description:

      List of child nodes that specify the regulators.



required:

  - compatible

  - reg

  - interrupts

  - clocks

  - "#clock-cells"

  - regulators



additionalProperties: false



examples:

  - |

    #include <dt-bindings/interrupt-controller/irq.h>

    #include <dt-bindings/leds/common.h>



    i2c {

      pmic: pmic@4b {

            compatible = "rohm,bd71847";

            reg = <0x4b>;

            interrupt-parent = <&gpio1>;

            interrupts = <29 IRQ_TYPE_LEVEL_LOW>;

            #clock-cells = <0>;

            clocks = <&osc 0>;

            rohm,reset-snvs-powered;

            rohm,short-press-ms = <10>;

            rohm,long-press-ms = <2000>;



            regulators {

                buck1: BUCK1 {

                    regulator-name = "buck1";

                    regulator-min-microvolt = <700000>;

                    regulator-max-microvolt = <1300000>;

                    regulator-boot-on;

                    regulator-always-on;

                    regulator-ramp-delay = <1250>;

                    rohm,dvs-run-voltage = <900000>;

                    rohm,dvs-idle-voltage = <850000>;

                    rohm,dvs-suspend-voltage = <800000>;

                };

                buck2: BUCK2 {

                    regulator-name = "buck2";

                    regulator-min-microvolt = <700000>;

                    regulator-max-microvolt = <1300000>;

                    regulator-boot-on;

                    regulator-always-on;

                    regulator-ramp-delay = <1250>;

                    rohm,dvs-run-voltage = <1000000>;

                    rohm,dvs-idle-voltage = <900000>;

                };

                buck3: BUCK3 {

                    regulator-name = "buck3";

                    regulator-min-microvolt = <550000>;

                    regulator-max-microvolt = <1350000>;

                    regulator-boot-on;

                };

                buck4: BUCK4 {

                    regulator-name = "buck4";

                    regulator-min-microvolt = <2600000>;

                    regulator-max-microvolt = <3300000>;

                    regulator-boot-on;

                };

                buck5: BUCK5 {

                    regulator-name = "buck5";

                    regulator-min-microvolt = <1605000>;

                    regulator-max-microvolt = <1995000>;

                    regulator-boot-on;

                };

                buck8: BUCK6 {

                    regulator-name = "buck6";

                    regulator-min-microvolt = <800000>;

                    regulator-max-microvolt = <1400000>;

                };



                ldo1: LDO1 {

                    regulator-name = "ldo1";

                    regulator-min-microvolt = <1600000>;

                    regulator-max-microvolt = <3300000>;

                    regulator-boot-on;

                };

                ldo2: LDO2 {

                    regulator-name = "ldo2";

                    regulator-min-microvolt = <800000>;

                    regulator-max-microvolt = <900000>;

                    regulator-boot-on;

                };

                ldo3: LDO3 {

                    regulator-name = "ldo3";

                    regulator-min-microvolt = <1800000>;

                    regulator-max-microvolt = <3300000>;

                };

                ldo4: LDO4 {

                    regulator-name = "ldo4";

                    regulator-min-microvolt = <900000>;

                    regulator-max-microvolt = <1800000>;

                };

                ldo5: LDO5 {

                    regulator-name = "ldo5";

                    regulator-min-microvolt = <800000>;

                    regulator-max-microvolt = <3300000>;

                };

                ldo6: LDO6 {

                    regulator-name = "ldo6";

                    regulator-min-microvolt = <900000>;

                    regulator-max-microvolt = <1800000>;

                };

            };

        };

    };

Documentation/devicetree/bindings/regulator/rohm,bd71837-regulator.txt

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ROHM BD71837 and BD71847 Power Management Integrated Circuit regulator bindings



Required properties:

 - regulator-name: should be "buck1", ..., "buck8" and "ldo1", ..., "ldo7" for

                   BD71837. For BD71847 names should be "buck1", ..., "buck6"

		   and "ldo1", ..., "ldo6"



List of regulators provided by this controller. BD71837 regulators node

should be sub node of the BD71837 MFD node. See BD71837 MFD bindings at

Documentation/devicetree/bindings/mfd/rohm,bd71837-pmic.txt

Regulator nodes should be named to BUCK_<number> and LDO_<number>. The

definition for each of these nodes is defined using the standard

binding for regulators at

Documentation/devicetree/bindings/regulator/regulator.txt.

Note that if BD71837 starts at RUN state you probably want to use

regulator-boot-on at least for BUCK6 and BUCK7 so that those are not

disabled by driver at startup. LDO5 and LDO6 are supplied by those and

if they are disabled at startup the voltage monitoring for LDO5/LDO6 will

cause PMIC to reset.



The valid names for BD71837 regulator nodes are:

BUCK1, BUCK2, BUCK3, BUCK4, BUCK5, BUCK6, BUCK7, BUCK8

LDO1, LDO2, LDO3, LDO4, LDO5, LDO6, LDO7



The valid names for BD71847 regulator nodes are:

BUCK1, BUCK2, BUCK3, BUCK4, BUCK5, BUCK6

LDO1, LDO2, LDO3, LDO4, LDO5, LDO6



Optional properties:

- rohm,dvs-run-voltage		: PMIC default "RUN" state voltage in uV.

				  See below table for bucks which support this.

- rohm,dvs-idle-voltage		: PMIC default "IDLE" state voltage in uV.

				  See below table for bucks which support this.

- rohm,dvs-suspend-voltage	: PMIC default "SUSPEND" state voltage in uV.

				  See below table for bucks which support this.

- Any optional property defined in bindings/regulator/regulator.txt



Supported default DVS states:



BD71837:

buck	| dvs-run-voltage	| dvs-idle-voltage	| dvs-suspend-voltage

-----------------------------------------------------------------------------

1	| supported		| supported		| supported

----------------------------------------------------------------------------

2	| supported		| supported		| not supported

----------------------------------------------------------------------------

3	| supported		| not supported		| not supported

----------------------------------------------------------------------------

4	| supported		| not supported		| not supported

----------------------------------------------------------------------------

rest	| not supported		| not supported		| not supported



BD71847:

buck	| dvs-run-voltage	| dvs-idle-voltage	| dvs-suspend-voltage

-----------------------------------------------------------------------------

1	| supported		| supported		| supported

----------------------------------------------------------------------------

2	| supported		| supported		| not supported

----------------------------------------------------------------------------

rest	| not supported		| not supported		| not supported



Example:

regulators {

	buck1: BUCK1 {

		regulator-name = "buck1";

		regulator-min-microvolt = <700000>;

		regulator-max-microvolt = <1300000>;

		regulator-boot-on;

		regulator-always-on;

		regulator-ramp-delay = <1250>;

		rohm,dvs-run-voltage = <900000>;

		rohm,dvs-idle-voltage = <850000>;

		rohm,dvs-suspend-voltage = <800000>;

	};

	buck2: BUCK2 {

		regulator-name = "buck2";

		regulator-min-microvolt = <700000>;

		regulator-max-microvolt = <1300000>;

		regulator-boot-on;

		regulator-always-on;

		regulator-ramp-delay = <1250>;

		rohm,dvs-run-voltage = <1000000>;

		rohm,dvs-idle-voltage = <900000>;

	};

	buck3: BUCK3 {

		regulator-name = "buck3";

		regulator-min-microvolt = <700000>;

		regulator-max-microvolt = <1300000>;

		regulator-boot-on;

		rohm,dvs-run-voltage = <1000000>;

	};

	buck4: BUCK4 {

		regulator-name = "buck4";

		regulator-min-microvolt = <700000>;

		regulator-max-microvolt = <1300000>;

		regulator-boot-on;

		rohm,dvs-run-voltage = <1000000>;

	};

	buck5: BUCK5 {

		regulator-name = "buck5";

		regulator-min-microvolt = <700000>;

		regulator-max-microvolt = <1350000>;

		regulator-boot-on;

	};

	buck6: BUCK6 {

		regulator-name = "buck6";

		regulator-min-microvolt = <3000000>;

		regulator-max-microvolt = <3300000>;

		regulator-boot-on;

	};

	buck7: BUCK7 {

		regulator-name = "buck7";

		regulator-min-microvolt = <1605000>;

		regulator-max-microvolt = <1995000>;

		regulator-boot-on;

	};

	buck8: BUCK8 {

		regulator-name = "buck8";

		regulator-min-microvolt = <800000>;

		regulator-max-microvolt = <1400000>;

	};



	ldo1: LDO1 {

		regulator-name = "ldo1";

		regulator-min-microvolt = <3000000>;

		regulator-max-microvolt = <3300000>;

		regulator-boot-on;

	};

	ldo2: LDO2 {

		regulator-name = "ldo2";

		regulator-min-microvolt = <900000>;

		regulator-max-microvolt = <900000>;

		regulator-boot-on;

	};

	ldo3: LDO3 {

		regulator-name = "ldo3";

		regulator-min-microvolt = <1800000>;

		regulator-max-microvolt = <3300000>;

	};

	ldo4: LDO4 {

		regulator-name = "ldo4";

		regulator-min-microvolt = <900000>;

		regulator-max-microvolt = <1800000>;

	};

	ldo5: LDO5 {

		regulator-name = "ldo5";

		regulator-min-microvolt = <1800000>;

		regulator-max-microvolt = <3300000>;

	};

	ldo6: LDO6 {

		regulator-name = "ldo6";

		regulator-min-microvolt = <900000>;

		regulator-max-microvolt = <1800000>;

	};

	ldo7_reg: LDO7 {

		regulator-name = "ldo7";

		regulator-min-microvolt = <1800000>;

		regulator-max-microvolt = <3300000>;

	};

};

Documentation/devicetree/bindings/regulator/rohm,bd71837-regulator.yaml

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