regulator: dt-bindings: samsung,s5m8767: convert to dtschema
Convert the regulators of Samsung S5M8767 PMIC to DT schema format. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Reviewed-by: Rob Herring <robh@kernel.org> Message-Id: <20211008113931.134847-3-krzysztof.kozlowski@canonical.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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Krzysztof Kozlowski
Mark Brown
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fab58debc1
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Binding for Samsung S5M8767 regulator block
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===========================================
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This is a part of device tree bindings for S5M family multi-function devices.
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More information can be found in bindings/mfd/sec-core.txt file.
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The S5M8767 device provide buck and LDO regulators.
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To register these with regulator framework instantiate under main device node
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a sub-node named "regulators" with more sub-nodes for each regulator using the
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common regulator binding documented in:
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- Documentation/devicetree/bindings/regulator/regulator.txt
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Required properties of the main device node (the parent!):
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- s5m8767,pmic-buck-ds-gpios: GPIO specifiers for three host gpio's used
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for selecting GPIO DVS lines. It is one-to-one mapped to dvs gpio lines.
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[1] If either of the 's5m8767,pmic-buck[2/3/4]-uses-gpio-dvs' optional
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property is specified, then all the eight voltage values for the
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's5m8767,pmic-buck[2/3/4]-dvs-voltage' should be specified.
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Optional properties of the main device node (the parent!):
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- s5m8767,pmic-buck2-dvs-voltage: A set of 8 voltage values in micro-volt (uV)
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units for buck2 when changing voltage using gpio dvs. Refer to [1] below
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for additional information.
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- s5m8767,pmic-buck3-dvs-voltage: A set of 8 voltage values in micro-volt (uV)
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units for buck3 when changing voltage using gpio dvs. Refer to [1] below
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for additional information.
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- s5m8767,pmic-buck4-dvs-voltage: A set of 8 voltage values in micro-volt (uV)
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units for buck4 when changing voltage using gpio dvs. Refer to [1] below
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for additional information.
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- s5m8767,pmic-buck2-uses-gpio-dvs: 'buck2' can be controlled by gpio dvs.
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- s5m8767,pmic-buck3-uses-gpio-dvs: 'buck3' can be controlled by gpio dvs.
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- s5m8767,pmic-buck4-uses-gpio-dvs: 'buck4' can be controlled by gpio dvs.
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Additional properties required if either of the optional properties are used:
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- s5m8767,pmic-buck-default-dvs-idx: Default voltage setting selected from
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the possible 8 options selectable by the dvs gpios. The value of this
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property should be between 0 and 7. If not specified or if out of range, the
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default value of this property is set to 0.
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- s5m8767,pmic-buck-dvs-gpios: GPIO specifiers for three host gpio's used
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for dvs. The format of the gpio specifier depends in the gpio controller.
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Names of regulators supported by S5M8767 device:
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- LDOn
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- valid values for n are 1 to 28
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- Example: LDO1, LDO2, LDO28
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- BUCKn
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- valid values for n are 1 to 9.
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- Example: BUCK1, BUCK2, BUCK9
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Note: The 'n' in LDOn and BUCKn represents the LDO or BUCK number
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as per the datasheet of device.
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Optional properties of the nodes under "regulators" sub-node:
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- op_mode: describes the different operating modes of the LDO's with
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power mode change in SOC. The different possible values are,
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0 - always off mode
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1 - on in normal mode
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2 - low power mode
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3 - suspend mode
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- s5m8767,pmic-ext-control-gpios: (optional) GPIO specifier for one
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GPIO controlling this regulator
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(enable/disable); This is valid only
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for buck9.
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Example:
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s5m8767_pmic@66 {
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compatible = "samsung,s5m8767-pmic";
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reg = <0x66>;
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s5m8767,pmic-buck2-uses-gpio-dvs;
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s5m8767,pmic-buck3-uses-gpio-dvs;
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s5m8767,pmic-buck4-uses-gpio-dvs;
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s5m8767,pmic-buck-default-dvs-idx = <0>;
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s5m8767,pmic-buck-dvs-gpios = <&gpx0 0 0>, /* DVS1 */
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<&gpx0 1 0>, /* DVS2 */
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<&gpx0 2 0>; /* DVS3 */
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s5m8767,pmic-buck-ds-gpios = <&gpx2 3 0>, /* SET1 */
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<&gpx2 4 0>, /* SET2 */
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<&gpx2 5 0>; /* SET3 */
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s5m8767,pmic-buck2-dvs-voltage = <1350000>, <1300000>,
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<1250000>, <1200000>,
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<1150000>, <1100000>,
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<1000000>, <950000>;
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s5m8767,pmic-buck3-dvs-voltage = <1100000>, <1100000>,
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<1100000>, <1100000>,
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<1000000>, <1000000>,
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<1000000>, <1000000>;
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s5m8767,pmic-buck4-dvs-voltage = <1200000>, <1200000>,
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<1200000>, <1200000>,
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<1200000>, <1200000>,
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<1200000>, <1200000>;
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regulators {
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ldo1_reg: LDO1 {
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regulator-name = "VDD_ABB_3.3V";
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regulator-min-microvolt = <3300000>;
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regulator-max-microvolt = <3300000>;
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op_mode = <1>; /* Normal Mode */
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};
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ldo2_reg: LDO2 {
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regulator-name = "VDD_ALIVE_1.1V";
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regulator-min-microvolt = <1100000>;
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regulator-max-microvolt = <1100000>;
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regulator-always-on;
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};
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buck1_reg: BUCK1 {
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regulator-name = "VDD_MIF_1.2V";
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regulator-min-microvolt = <950000>;
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regulator-max-microvolt = <1350000>;
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regulator-always-on;
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regulator-boot-on;
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};
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vemmc_reg: BUCK9 {
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regulator-name = "VMEM_VDD_2.8V";
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regulator-min-microvolt = <2800000>;
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regulator-max-microvolt = <2800000>;
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op_mode = <3>; /* Standby Mode */
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s5m8767,pmic-ext-control-gpios = <&gpk0 2 0>;
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};
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};
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};
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@ -0,0 +1,74 @@
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# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/regulator/samsung,s5m8767.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Samsung S5M8767 Power Management IC regulators
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maintainers:
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- Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
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description: |
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This is a part of device tree bindings for S2M and S5M family of Power
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Management IC (PMIC).
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The S5M8767 provides buck and LDO regulators.
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See also Documentation/devicetree/bindings/mfd/samsung,s5m8767.yaml for
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additional information and example.
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patternProperties:
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# 28 LDOs
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"^LDO([1-9]|1[0-9]|2[0-8])$":
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type: object
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$ref: regulator.yaml#
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unevaluatedProperties: false
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description:
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Properties for single LDO regulator.
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properties:
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op_mode:
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$ref: /schemas/types.yaml#/definitions/uint32
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enum: [0, 1, 2, 3]
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default: 1
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description: |
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Describes the different operating modes of the LDO's with power mode
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change in SOC. The different possible values are:
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0 - always off mode
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1 - on in normal mode
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2 - low power mode
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3 - suspend mode
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required:
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- regulator-name
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# 8 bucks
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"^BUCK[1-8]$":
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type: object
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$ref: regulator.yaml#
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unevaluatedProperties: false
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description:
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Properties for single BUCK regulator.
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required:
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- regulator-name
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# 9 buck
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"^BUCK9$":
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type: object
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$ref: regulator.yaml#
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unevaluatedProperties: false
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description:
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Properties for single BUCK regulator.
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properties:
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s5m8767,pmic-ext-control-gpios:
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maxItems: 1
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description: |
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GPIO specifier for one GPIO controlling this regulator on/off.
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required:
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- regulator-name
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additionalProperties: false
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@ -16333,7 +16333,7 @@ S: Supported
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F: Documentation/devicetree/bindings/clock/samsung,s2mps11.yaml
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F: Documentation/devicetree/bindings/mfd/samsung,sec-core.txt
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F: Documentation/devicetree/bindings/regulator/samsung,s2m*.yaml
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F: Documentation/devicetree/bindings/regulator/samsung,s5m*.txt
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F: Documentation/devicetree/bindings/regulator/samsung,s5m*.yaml
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F: drivers/clk/clk-s2mps11.c
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F: drivers/mfd/sec*.c
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F: drivers/regulator/s2m*.c
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