From 189ccdc7e8a9b5634b99ad0052749ac4c5442f89 Mon Sep 17 00:00:00 2001 From: André Draszik Date: Thu, 22 Jan 2026 15:43:31 +0000 Subject: dt-bindings: mfd: samsung,s2mps11: Split s2mpg10-pmic into separate file MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The samsung,s2mpg10-pmic binding is going to acquire various additional properties. To avoid making the common samsung,s2mps11 binding file too complicated due to additional nesting, split s2mpg10 out into its own file. As a side-effect, the oneOf for the interrupts is not required anymore, as the required: node is at the top-level now. Signed-off-by: André Draszik Reviewed-by: Krzysztof Kozlowski Link: https://patch.msgid.link/20260122-s2mpg1x-regulators-v7-4-3b1f9831fffd@linaro.org Signed-off-by: Lee Jones --- .../bindings/mfd/samsung,s2mpg10-pmic.yaml | 69 ++++++++++++++++++++++ .../devicetree/bindings/mfd/samsung,s2mps11.yaml | 29 +-------- 2 files changed, 70 insertions(+), 28 deletions(-) create mode 100644 Documentation/devicetree/bindings/mfd/samsung,s2mpg10-pmic.yaml (limited to 'Documentation/devicetree') diff --git a/Documentation/devicetree/bindings/mfd/samsung,s2mpg10-pmic.yaml b/Documentation/devicetree/bindings/mfd/samsung,s2mpg10-pmic.yaml new file mode 100644 index 000000000000..6475cd1d2d15 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/samsung,s2mpg10-pmic.yaml @@ -0,0 +1,69 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mfd/samsung,s2mpg10-pmic.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Samsung S2MPG10 Power Management IC + +maintainers: + - André Draszik + +description: | + This is part of the device tree bindings for the S2MPG family of Power + Management IC (PMIC). + + The Samsung S2MPG10 is a Power Management IC for mobile applications with buck + converters, various LDOs, power meters, RTC, clock outputs, and additional + GPIO interfaces. + +properties: + compatible: + const: samsung,s2mpg10-pmic + + clocks: + $ref: /schemas/clock/samsung,s2mps11.yaml + description: + Child node describing clock provider. + + interrupts: + maxItems: 1 + + regulators: + type: object + description: + List of child nodes that specify the regulators. + + system-power-controller: true + + wakeup-source: true + +required: + - compatible + - interrupts + - regulators + +additionalProperties: false + +examples: + - | + #include + #include + + pmic { + compatible = "samsung,s2mpg10-pmic"; + interrupts-extended = <&gpa0 6 IRQ_TYPE_LEVEL_LOW>; + pinctrl-names = "default"; + pinctrl-0 = <&pmic_int>; + system-power-controller; + wakeup-source; + + clocks { + compatible = "samsung,s2mpg10-clk"; + #clock-cells = <1>; + clock-output-names = "rtc32k_ap", "peri32k1", "peri32k2"; + }; + + regulators { + }; + }; diff --git a/Documentation/devicetree/bindings/mfd/samsung,s2mps11.yaml b/Documentation/devicetree/bindings/mfd/samsung,s2mps11.yaml index 31d544a9c05c..ac5d0c149796 100644 --- a/Documentation/devicetree/bindings/mfd/samsung,s2mps11.yaml +++ b/Documentation/devicetree/bindings/mfd/samsung,s2mps11.yaml @@ -20,7 +20,6 @@ description: | properties: compatible: enum: - - samsung,s2mpg10-pmic - samsung,s2mps11-pmic - samsung,s2mps13-pmic - samsung,s2mps14-pmic @@ -59,42 +58,16 @@ properties: reset (setting buck voltages to default values). type: boolean - system-power-controller: true - wakeup-source: true required: - compatible + - reg - regulators additionalProperties: false allOf: - - if: - properties: - compatible: - contains: - const: samsung,s2mpg10-pmic - then: - properties: - reg: false - samsung,s2mps11-acokb-ground: false - samsung,s2mps11-wrstbi-ground: false - - # oneOf is required, because dtschema's fixups.py doesn't handle this - # nesting here. Its special treatment to allow either interrupt property - # when only one is specified in the binding works at the top level only. - oneOf: - - required: [interrupts] - - required: [interrupts-extended] - - else: - properties: - system-power-controller: false - - required: - - reg - - if: properties: compatible: -- cgit v1.2.3 From b356595f8bf4d22646e7800f6b85f63d42de1f31 Mon Sep 17 00:00:00 2001 From: André Draszik Date: Thu, 22 Jan 2026 15:43:32 +0000 Subject: dt-bindings: mfd: samsung,s2mpg10-pmic: Link to its regulators MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Update the regulators node to link to the correct and expected samsung,s2mpg10-regulators binding, in order to describe the regulators available on this PMIC. Additionally, describe the supply inputs of the regulator rails, with the supply names matching the datasheet. While at it, update the description and example slightly. Note: S2MPG10 is typically used as the main-PMIC together with an S2MPG11 PMIC in a main/sub configuration, hence the datasheet and the binding both suffix the supplies with an 'm'. Signed-off-by: André Draszik Reviewed-by: Krzysztof Kozlowski Link: https://patch.msgid.link/20260122-s2mpg1x-regulators-v7-5-3b1f9831fffd@linaro.org Signed-off-by: Lee Jones --- .../bindings/mfd/samsung,s2mpg10-pmic.yaml | 57 ++++++++++++++++++++-- 1 file changed, 54 insertions(+), 3 deletions(-) (limited to 'Documentation/devicetree') diff --git a/Documentation/devicetree/bindings/mfd/samsung,s2mpg10-pmic.yaml b/Documentation/devicetree/bindings/mfd/samsung,s2mpg10-pmic.yaml index 6475cd1d2d15..0ea1a440b983 100644 --- a/Documentation/devicetree/bindings/mfd/samsung,s2mpg10-pmic.yaml +++ b/Documentation/devicetree/bindings/mfd/samsung,s2mpg10-pmic.yaml @@ -10,12 +10,13 @@ maintainers: - André Draszik description: | - This is part of the device tree bindings for the S2MPG family of Power - Management IC (PMIC). + This is part of the device tree bindings for the S2MPG10 Power Management IC + (PMIC). The Samsung S2MPG10 is a Power Management IC for mobile applications with buck converters, various LDOs, power meters, RTC, clock outputs, and additional - GPIO interfaces. + GPIO interfaces and is typically complemented by S2MPG10 PMIC in a main/sub + configuration as the main PMIC. properties: compatible: @@ -31,6 +32,7 @@ properties: regulators: type: object + $ref: /schemas/regulator/samsung,s2mpg10-regulator.yaml description: List of child nodes that specify the regulators. @@ -38,6 +40,32 @@ properties: wakeup-source: true +patternProperties: + "^vinb([1-9]|10)m-supply$": + description: + Phandle to the power supply for each buck rail of this PMIC. There is a + 1:1 mapping of supply to rail, e.g. vinb1m-supply supplies buck1m. + + "^vinl([1-9]|1[0-5])m-supply$": + description: | + Phandle to the power supply for one or multiple LDO rails of this PMIC. + The mapping of supply to rail(s) is as follows: + vinl1m - ldo13m + vinl2m - ldo15m + vinl3m - ldo1m, ldo5m, ldo7m + vinl4m - ldo3m, ldo8m + vinl5m - ldo16m + vinl6m - ldo17m + vinl7m - ldo6m, ldo11m, ldo24m, ldo28m + vinl8m - ldo12m + vinl9m - ldo2m, ldo4m + vinl10m - ldo9m, ldo14m, ldo18m, 19m, ldo20m, ldo25m + vinl11m - ldo23m, ldo31m + vinl12m - ldo29m + vinl13m - ldo30m + vinl14m - ldo21m + vinl15m - ldo10m, ldo22m, ldo26m, ldo27m + required: - compatible - interrupts @@ -49,6 +77,7 @@ examples: - | #include #include + #include pmic { compatible = "samsung,s2mpg10-pmic"; @@ -58,6 +87,8 @@ examples: system-power-controller; wakeup-source; + vinl3m-supply = <&buck8m>; + clocks { compatible = "samsung,s2mpg10-clk"; #clock-cells = <1>; @@ -65,5 +96,25 @@ examples: }; regulators { + buck8m { + regulator-name = "vdd_mif"; + regulator-min-microvolt = <450000>; + regulator-max-microvolt = <1300000>; + regulator-ramp-delay = <6250>; + }; + + ldo1m { + regulator-name = "vdd_ldo1"; + regulator-min-microvolt = <700000>; + regulator-max-microvolt = <1300000>; + }; + + ldo20m { + regulator-name = "vdd_dmics"; + regulator-min-microvolt = <700000>; + regulator-max-microvolt = <1300000>; + regulator-always-on; + samsung,ext-control = ; + }; }; }; -- cgit v1.2.3 From bfacd34f8f34edc70c5c7a5fea46fd3c9ec35a5c Mon Sep 17 00:00:00 2001 From: André Draszik Date: Thu, 22 Jan 2026 15:43:33 +0000 Subject: dt-bindings: mfd: Add samsung,s2mpg11-pmic MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The Samsung S2MPG11 PMIC is similar to the existing S2MPG10 PMIC supported by this binding, but still differs enough from it to justify a separate binding. It is a Power Management IC for mobile applications with buck converters, various LDOs, power meters, NTC thermistor inputs, and additional GPIO interfaces and typically complements an S2MPG10 PMIC in a main/sub configuration as the sub-PMIC. Like S2MPG10, communication is via the Samsung ACPM firmware and it therefore needs to be a child of the ACPM firmware node. Add the PMIC, the regulators node, and the supply inputs of the regulator rails, with the supply names matching the datasheet. Note: S2MPG11 is typically used as the sub-PMIC together with an S2MPG10 PMIC in a main/sub configuration, hence the datasheet and the binding both suffix the supplies with an 's'. Signed-off-by: André Draszik Reviewed-by: Krzysztof Kozlowski Link: https://patch.msgid.link/20260122-s2mpg1x-regulators-v7-6-3b1f9831fffd@linaro.org Signed-off-by: Lee Jones --- .../bindings/mfd/samsung,s2mpg11-pmic.yaml | 88 ++++++++++++++++++++++ 1 file changed, 88 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/samsung,s2mpg11-pmic.yaml (limited to 'Documentation/devicetree') diff --git a/Documentation/devicetree/bindings/mfd/samsung,s2mpg11-pmic.yaml b/Documentation/devicetree/bindings/mfd/samsung,s2mpg11-pmic.yaml new file mode 100644 index 000000000000..62cedbbd9d8c --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/samsung,s2mpg11-pmic.yaml @@ -0,0 +1,88 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mfd/samsung,s2mpg11-pmic.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Samsung S2MPG11 Power Management IC + +maintainers: + - André Draszik + +description: | + This is part of the device tree bindings for the S2MPG11 Power Management IC + (PMIC). + + The Samsung S2MPG11 is a Power Management IC for mobile applications with buck + converters, various LDOs, power meters, NTC thermistor inputs, and additional + GPIO interfaces and typically complements an S2MPG10 PMIC in a main/sub + configuration as the sub-PMIC. + +properties: + compatible: + const: samsung,s2mpg11-pmic + + interrupts: + maxItems: 1 + + regulators: + type: object + $ref: /schemas/regulator/samsung,s2mpg11-regulator.yaml + description: + List of child nodes that specify the regulators. + + wakeup-source: true + +patternProperties: + "^vinb(([1-9]|10)s|[abd])-supply$": + description: + Phandle to the power supply for each buck rail of this PMIC. There is a + 1:1 mapping of numbered supply to rail, e.g. vinb1s-supply supplies + buck1s. The remaining mapping is as follows + vinba - bucka + vinbb - buck boost + vinbd - buckd + + "^vinl[1-6]s-supply$": + description: | + Phandle to the power supply for one or multiple LDO rails of this PMIC. + The mapping of supply to rail(s) is as follows + vinl1s - ldo1s, ldo2s + vinl2s - ldo8s, ldo9s + vinl3s - ldo3s, ldo5s, ldo7s, ldo15s + vinl4s - ldo10s, ldo11s, ldo12s, ldo14s + vinl5s - ldo4s, ldo6s + vinl6s - ldo13s + +required: + - compatible + - interrupts + - regulators + +additionalProperties: false + +examples: + - | + #include + #include + #include + + pmic { + compatible = "samsung,s2mpg11-pmic"; + interrupts-extended = <&gpa0 7 IRQ_TYPE_LEVEL_LOW>; + pinctrl-names = "default"; + pinctrl-0 = <&pmic_int>; + wakeup-source; + + vinl1s-supply = <&buck8m>; + vinl2s-supply = <&buck6s>; + + regulators { + buckd { + regulator-name = "vcc_ufs"; + regulator-ramp-delay = <6250>; + enable-gpios = <&gpp0 1 GPIO_ACTIVE_HIGH>; + samsung,ext-control = ; + }; + }; + }; -- cgit v1.2.3 From e4691f356b2c24467eadc8b20f267e9e046f74cd Mon Sep 17 00:00:00 2001 From: André Draszik Date: Thu, 22 Jan 2026 15:43:28 +0000 Subject: dt-bindings: firmware: google,gs101-acpm-ipc: convert regulators to lowercase MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Using lowercase for the buck and ldo nodenames is preferred, as evidenced e.g. in [1]. Convert the example here to lowercase before we add any bindings describing the s2mpg1x regulators that will enforce the spelling. Link: https://lore.kernel.org/all/20250223-mysterious-infrared-civet-e5bcbf@krzk-bin/ [1] Acked-by: Rob Herring (Arm) Signed-off-by: André Draszik Link: https://patch.msgid.link/20260122-s2mpg1x-regulators-v7-1-3b1f9831fffd@linaro.org Signed-off-by: Mark Brown --- Documentation/devicetree/bindings/firmware/google,gs101-acpm-ipc.yaml | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'Documentation/devicetree') diff --git a/Documentation/devicetree/bindings/firmware/google,gs101-acpm-ipc.yaml b/Documentation/devicetree/bindings/firmware/google,gs101-acpm-ipc.yaml index d3bca6088d12..4a1e3e3c0505 100644 --- a/Documentation/devicetree/bindings/firmware/google,gs101-acpm-ipc.yaml +++ b/Documentation/devicetree/bindings/firmware/google,gs101-acpm-ipc.yaml @@ -75,7 +75,7 @@ examples: interrupts-extended = <&gpa0 6 IRQ_TYPE_LEVEL_LOW>; regulators { - LDO1 { + ldo1m { regulator-name = "vdd_ldo1"; regulator-min-microvolt = <700000>; regulator-max-microvolt = <1300000>; @@ -84,7 +84,7 @@ examples: // ... - BUCK1 { + buck8m { regulator-name = "vdd_mif"; regulator-min-microvolt = <450000>; regulator-max-microvolt = <1300000>; -- cgit v1.2.3 From 71bc6adae4102550717a8eeaa21d3f76f5149ac6 Mon Sep 17 00:00:00 2001 From: André Draszik Date: Thu, 22 Jan 2026 15:43:29 +0000 Subject: regulator: dt-bindings: add s2mpg10-pmic regulators MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The S2MPG10 PMIC is a Power Management IC for mobile applications with buck converters, various LDOs, power meters, RTC, clock outputs, and additional GPIO interfaces. It has 10 buck and 31 LDO rails. Several of these can either be controlled via software (register writes) or via external signals, in particular by: * one out of several input pins connected to a main processor's: * GPIO pins * other pins that are e.g. firmware- or power-domain-controlled without explicit driver intervention * a combination of input pins and register writes. Control via input pins allows PMIC rails to be controlled by firmware, e.g. during standby/suspend, or as part of power domain handling where otherwise that would not be possible. Additionally toggling a pin is faster than register writes, and it also allows the PMIC to ensure that any necessary timing requirements between rails are respected automatically if multiple rails are to be enabled or disabled quasi simultaneously. While external control via input pins appears to exist on other versions of this PMIC, there is more flexibility in this version, in particular there is a selection of input pins to choose from for each rail (which must therefore be configured accordingly if in use), whereas other versions don't have this flexibility. Add documentation related to the regulator (buck & ldo) parts like devicetree definitions, regulator naming patterns, and additional properties. S2MPG10 is typically used as the main-PMIC together with an S2MPG11 PMIC in a main/sub configuration, hence the datasheet and the binding both suffix the rails with an 'm'. Reviewed-by: Krzysztof Kozlowski Signed-off-by: André Draszik Link: https://patch.msgid.link/20260122-s2mpg1x-regulators-v7-2-3b1f9831fffd@linaro.org Signed-off-by: Mark Brown --- .../regulator/samsung,s2mpg10-regulator.yaml | 158 +++++++++++++++++++++ MAINTAINERS | 1 + .../regulator/samsung,s2mpg10-regulator.h | 39 +++++ 3 files changed, 198 insertions(+) create mode 100644 Documentation/devicetree/bindings/regulator/samsung,s2mpg10-regulator.yaml create mode 100644 include/dt-bindings/regulator/samsung,s2mpg10-regulator.h (limited to 'Documentation/devicetree') diff --git a/Documentation/devicetree/bindings/regulator/samsung,s2mpg10-regulator.yaml b/Documentation/devicetree/bindings/regulator/samsung,s2mpg10-regulator.yaml new file mode 100644 index 000000000000..7252f94b3a8f --- /dev/null +++ b/Documentation/devicetree/bindings/regulator/samsung,s2mpg10-regulator.yaml @@ -0,0 +1,158 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/regulator/samsung,s2mpg10-regulator.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Samsung S2MPG10 Power Management IC regulators + +maintainers: + - André Draszik + +description: | + This is part of the device tree bindings for the S2MG10 Power Management IC + (PMIC). + + The S2MPG10 PMIC provides 10 buck and 31 LDO regulators. + + See also Documentation/devicetree/bindings/mfd/samsung,s2mps11.yaml for + additional information and example. + +properties: + # 1 LDO with possible (but limited) external control + ldo20m: + type: object + $ref: regulator.yaml# + unevaluatedProperties: false + description: + Properties for a single LDO regulator. + + allOf: + - $ref: "#/$defs/s2mpg10-ext-control" + + properties: + regulator-ramp-delay: false + + samsung,ext-control: + minimum: 11 + +patternProperties: + # 10 bucks + "^buck([1-9]|10)m$": + type: object + $ref: regulator.yaml# + unevaluatedProperties: false + description: + Properties for a single buck regulator. + + allOf: + - $ref: "#/$defs/s2mpg10-ext-control" + + properties: + regulator-ramp-delay: + enum: [6250, 12500, 25000] + default: 6250 + + samsung,ext-control: + maximum: 10 + + # 12 standard LDOs + "^ldo(2[1-9]?|3[0-1])m$": + type: object + $ref: regulator.yaml# + unevaluatedProperties: false + description: + Properties for single LDO regulator. + + properties: + regulator-ramp-delay: false + + # 12 LDOs with possible external control + "^ldo([3-689]|1[046-9])m$": + type: object + $ref: regulator.yaml# + unevaluatedProperties: false + description: + Properties for a single LDO regulator. + + allOf: + - $ref: "#/$defs/s2mpg10-ext-control" + + properties: + regulator-ramp-delay: false + + samsung,ext-control: + maximum: 10 + + # 6 LDOs with ramp support, 5 out of those with possible external control + "^ldo(1[1235]?|7)m$": + type: object + $ref: regulator.yaml# + unevaluatedProperties: false + description: + Properties for a single LDO regulator. + + allOf: + - $ref: "#/$defs/s2mpg10-ext-control" + + properties: + regulator-ramp-delay: + enum: [6250, 12500] + default: 6250 + + samsung,ext-control: + maximum: 10 + +$defs: + s2mpg10-ext-control: + properties: + samsung,ext-control: + description: | + These rails can be controlled via one of several possible external + (hardware) signals. If so, this property configures the signal the PMIC + should monitor. For S2MPG10 rails where external control is possible other + than ldo20m, the following values generally corresponding to the + respective on-chip pin are valid: + - 0 # S2MPG10_EXTCTRL_PWREN - PWREN pin + - 1 # S2MPG10_EXTCTRL_PWREN_MIF - PWREN_MIF pin + - 2 # S2MPG10_EXTCTRL_AP_ACTIVE_N - ~AP_ACTIVE_N pin + - 3 # S2MPG10_EXTCTRL_CPUCL1_EN - CPUCL1_EN pin + - 4 # S2MPG10_EXTCTRL_CPUCL1_EN2 - CPUCL1_EN & PWREN pins + - 5 # S2MPG10_EXTCTRL_CPUCL2_EN - CPUCL2_EN pin + - 6 # S2MPG10_EXTCTRL_CPUCL2_EN2 - CPUCL2_E2 & PWREN pins + - 7 # S2MPG10_EXTCTRL_TPU_EN - TPU_EN pin + - 8 # S2MPG10_EXTCTRL_TPU_EN2 - TPU_EN & ~AP_ACTIVE_N pins + - 9 # S2MPG10_EXTCTRL_TCXO_ON - TCXO_ON pin + - 10 # S2MPG10_EXTCTRL_TCXO_ON2 - TCXO_ON & ~AP_ACTIVE_N pins + + For S2MPG10 ldo20m, the following values are valid + - 11 # S2MPG10_EXTCTRL_LDO20M_EN2 - VLDO20M_EN & LDO20M_SFR + - 12 # S2MPG10_EXTCTRL_LDO20M_EN - VLDO20M_EN pin + + $ref: /schemas/types.yaml#/definitions/uint32 + minimum: 0 + maximum: 12 + + enable-gpios: + description: + For rails where external control is done via a GPIO, this optional + property describes the GPIO line used. + + dependentRequired: + enable-gpios: [ "samsung,ext-control" ] + +allOf: + # Bucks 8, 9, and LDO 1 can not be controlled externally - above definition + # allows it and we deny it here. This approach reduces repetition. + - if: + anyOf: + - required: [buck8m] + - required: [buck9m] + - required: [ldo1m] + then: + patternProperties: + "^(buck[8-9]|ldo1)m$": + properties: + samsung,ext-control: false + +additionalProperties: false diff --git a/MAINTAINERS b/MAINTAINERS index 5b11839cba9d..877c1cddb576 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -23239,6 +23239,7 @@ F: drivers/mfd/sec*.[ch] F: drivers/regulator/s2*.c F: drivers/regulator/s5m*.c F: drivers/rtc/rtc-s5m.c +F: include/dt-bindings/regulator/samsung,s2m*.h F: include/linux/mfd/samsung/ SAMSUNG S3C24XX/S3C64XX SOC SERIES CAMIF DRIVER diff --git a/include/dt-bindings/regulator/samsung,s2mpg10-regulator.h b/include/dt-bindings/regulator/samsung,s2mpg10-regulator.h new file mode 100644 index 000000000000..4a6bf13442f5 --- /dev/null +++ b/include/dt-bindings/regulator/samsung,s2mpg10-regulator.h @@ -0,0 +1,39 @@ +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */ +/* + * Copyright 2021 Google LLC + * Copyright 2025 Linaro Ltd. + * + * Device Tree binding constants for the Samsung S2MPG1x PMIC regulators + */ + +#ifndef _DT_BINDINGS_REGULATOR_SAMSUNG_S2MPG10_H +#define _DT_BINDINGS_REGULATOR_SAMSUNG_S2MPG10_H + +/* + * Several regulators may be controlled via external signals instead of via + * software. These constants describe the possible signals for such regulators + * and generally correspond to the respecitve on-chip pins. + * + * S2MPG10 regulators supporting these are: + * - buck1m .. buck7m buck10m + * - ldo3m .. ldo19m + * + * ldo20m supports external control, but using a different set of control + * signals. + */ +#define S2MPG10_EXTCTRL_PWREN 0 /* PWREN pin */ +#define S2MPG10_EXTCTRL_PWREN_MIF 1 /* PWREN_MIF pin */ +#define S2MPG10_EXTCTRL_AP_ACTIVE_N 2 /* ~AP_ACTIVE_N pin */ +#define S2MPG10_EXTCTRL_CPUCL1_EN 3 /* CPUCL1_EN pin */ +#define S2MPG10_EXTCTRL_CPUCL1_EN2 4 /* CPUCL1_EN & PWREN pins */ +#define S2MPG10_EXTCTRL_CPUCL2_EN 5 /* CPUCL2_EN pin */ +#define S2MPG10_EXTCTRL_CPUCL2_EN2 6 /* CPUCL2_E2 & PWREN pins */ +#define S2MPG10_EXTCTRL_TPU_EN 7 /* TPU_EN pin */ +#define S2MPG10_EXTCTRL_TPU_EN2 8 /* TPU_EN & ~AP_ACTIVE_N pins */ +#define S2MPG10_EXTCTRL_TCXO_ON 9 /* TCXO_ON pin */ +#define S2MPG10_EXTCTRL_TCXO_ON2 10 /* TCXO_ON & ~AP_ACTIVE_N pins */ + +#define S2MPG10_EXTCTRL_LDO20M_EN2 11 /* VLDO20M_EN & LDO20M_SFR */ +#define S2MPG10_EXTCTRL_LDO20M_EN 12 /* VLDO20M_EN pin */ + +#endif /* _DT_BINDINGS_REGULATOR_SAMSUNG_S2MPG10_H */ -- cgit v1.2.3 From 030158c0528d1cbfbe9eebed09bad604f6135734 Mon Sep 17 00:00:00 2001 From: André Draszik Date: Thu, 22 Jan 2026 15:43:30 +0000 Subject: regulator: dt-bindings: add s2mpg11-pmic regulators MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The S2MPG11 PMIC is a Power Management IC for mobile applications with buck converters, various LDOs, power meters, NTC thermistor inputs, and additional GPIO interfaces. It typically complements an S2MPG10 PMIC in a main/sub configuration as the sub-PMIC. S2MPG11 has 12 buck, 1 buck-boost, and 15 LDO rails. Several of these can either be controlled via software (register writes) or via external signals, in particular by: * one out of several input pins connected to a main processor's: * GPIO pins * other pins that are e.g. firmware- or power-domain-controlled without explicit driver intervention * a combination of input pins and register writes. Control via input pins allows PMIC rails to be controlled by firmware, e.g. during standby/suspend, or as part of power domain handling where otherwise that would not be possible. Additionally toggling a pin is faster than register writes, and it also allows the PMIC to ensure that any necessary timing requirements between rails are respected automatically if multiple rails are to be enabled or disabled quasi simultaneously. While external control via input pins appears to exist on other versions of this PMIC, there is more flexibility in this version, in particular there is a selection of input pins to choose from for each rail (which must therefore be configured accordingly if in use), whereas other versions don't have this flexibility. Add documentation related to the regulator (buck & ldo) parts like devicetree definitions, regulator naming patterns, and additional properties. Since S2MPG11 is typically used as the sub-PMIC together with an S2MPG10 as the main-PMIC, the datasheet and the binding both suffix the rails with an 's'. Reviewed-by: Krzysztof Kozlowski Signed-off-by: André Draszik Link: https://patch.msgid.link/20260122-s2mpg1x-regulators-v7-3-3b1f9831fffd@linaro.org Signed-off-by: Mark Brown --- .../regulator/samsung,s2mpg11-regulator.yaml | 136 +++++++++++++++++++++ .../regulator/samsung,s2mpg10-regulator.h | 14 +++ 2 files changed, 150 insertions(+) create mode 100644 Documentation/devicetree/bindings/regulator/samsung,s2mpg11-regulator.yaml (limited to 'Documentation/devicetree') diff --git a/Documentation/devicetree/bindings/regulator/samsung,s2mpg11-regulator.yaml b/Documentation/devicetree/bindings/regulator/samsung,s2mpg11-regulator.yaml new file mode 100644 index 000000000000..119386325d1b --- /dev/null +++ b/Documentation/devicetree/bindings/regulator/samsung,s2mpg11-regulator.yaml @@ -0,0 +1,136 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/regulator/samsung,s2mpg11-regulator.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Samsung S2MPG11 Power Management IC regulators + +maintainers: + - André Draszik + +description: | + This is part of the device tree bindings for the S2MG11 Power Management IC + (PMIC). + + The S2MPG11 PMIC provides 12 buck, 1 buck-boost, and 15 LDO regulators. + + See also Documentation/devicetree/bindings/mfd/samsung,s2mps11.yaml for + additional information and example. + +properties: + buckboost: + type: object + $ref: regulator.yaml# + unevaluatedProperties: false + description: + Properties for the buck-boost regulator. + + properties: + regulator-ramp-delay: false + +patternProperties: + # 12 bucks + "^buck(([1-9]|10)s|[ad])$": + type: object + $ref: regulator.yaml# + unevaluatedProperties: false + description: + Properties for a single buck regulator. + + allOf: + - $ref: "#/$defs/s2mpg11-ext-control" + + properties: + regulator-ramp-delay: + enum: [6250, 12500, 25000] + default: 6250 + + # 11 standard LDOs + "^ldo([3-79]|1[01245])s$": + type: object + $ref: regulator.yaml# + unevaluatedProperties: false + description: + Properties for a single LDO regulator. + + properties: + regulator-ramp-delay: false + + # 2 LDOs with possible external control + "^ldo(8|13)s$": + type: object + $ref: regulator.yaml# + unevaluatedProperties: false + description: + Properties for single LDO regulator. + + allOf: + - $ref: "#/$defs/s2mpg11-ext-control" + + properties: + regulator-ramp-delay: false + + # 2 LDOs with ramp support and possible external control + "^ldo[12]s$": + type: object + $ref: regulator.yaml# + unevaluatedProperties: false + description: + Properties for a single LDO regulator. + + allOf: + - $ref: "#/$defs/s2mpg11-ext-control" + + properties: + regulator-ramp-delay: + enum: [6250, 12500] + default: 6250 + +$defs: + s2mpg11-ext-control: + properties: + samsung,ext-control: + description: | + These rails can be controlled via one of several possible external + (hardware) signals. If so, this property configures the signal the PMIC + should monitor. The following values generally corresponding to the + respective on-chip pin are valid: + - 0 # S2MPG11_EXTCTRL_PWREN - PWREN pin + - 1 # S2MPG11_EXTCTRL_PWREN_MIF - PWREN_MIF pin + - 2 # S2MPG11_EXTCTRL_AP_ACTIVE_N - ~AP_ACTIVE_N pin + - 3 # S2MPG11_EXTCTRL_G3D_EN - G3D_EN pin + - 4 # S2MPG11_EXTCTRL_G3D_EN2 - G3D_EN & ~AP_ACTIVE_N pins + - 5 # S2MPG11_EXTCTRL_AOC_VDD - AOC_VDD pin + - 6 # S2MPG11_EXTCTRL_AOC_RET - AOC_RET pin + - 7 # S2MPG11_EXTCTRL_UFS_EN - UFS_EN pin + - 8 # S2MPG11_EXTCTRL_LDO13S_EN - VLDO13S_EN pin + + $ref: /schemas/types.yaml#/definitions/uint32 + minimum: 0 + maximum: 8 + + enable-gpios: + description: + For rails where external control is done via a GPIO, this optional + property describes the GPIO line used. + + dependentRequired: + enable-gpios: [ "samsung,ext-control" ] + +allOf: + # Bucks 4, 6, 7 and 10 can not be controlled externally - above definition + # allows it and we deny it here. This approach reduces repetition. + - if: + anyOf: + - required: [buck4s] + - required: [buck6s] + - required: [buck7s] + - required: [buck10s] + then: + patternProperties: + "^buck([467]|10)s$": + properties: + samsung,ext-control: false + +additionalProperties: false diff --git a/include/dt-bindings/regulator/samsung,s2mpg10-regulator.h b/include/dt-bindings/regulator/samsung,s2mpg10-regulator.h index 4a6bf13442f5..d9c16bba4d85 100644 --- a/include/dt-bindings/regulator/samsung,s2mpg10-regulator.h +++ b/include/dt-bindings/regulator/samsung,s2mpg10-regulator.h @@ -20,6 +20,10 @@ * * ldo20m supports external control, but using a different set of control * signals. + * + * S2MPG11 regulators supporting these are: + * - buck1s .. buck3s buck5s buck8s buck9s bucka buckd + * - ldo1s ldo2s ldo8s ldo13s */ #define S2MPG10_EXTCTRL_PWREN 0 /* PWREN pin */ #define S2MPG10_EXTCTRL_PWREN_MIF 1 /* PWREN_MIF pin */ @@ -36,4 +40,14 @@ #define S2MPG10_EXTCTRL_LDO20M_EN2 11 /* VLDO20M_EN & LDO20M_SFR */ #define S2MPG10_EXTCTRL_LDO20M_EN 12 /* VLDO20M_EN pin */ +#define S2MPG11_EXTCTRL_PWREN 0 /* PWREN pin */ +#define S2MPG11_EXTCTRL_PWREN_MIF 1 /* PWREN_MIF pin */ +#define S2MPG11_EXTCTRL_AP_ACTIVE_N 2 /* ~AP_ACTIVE_N pin */ +#define S2MPG11_EXTCTRL_G3D_EN 3 /* G3D_EN pin */ +#define S2MPG11_EXTCTRL_G3D_EN2 4 /* G3D_EN & ~AP_ACTIVE_N pins */ +#define S2MPG11_EXTCTRL_AOC_VDD 5 /* AOC_VDD pin */ +#define S2MPG11_EXTCTRL_AOC_RET 6 /* AOC_RET pin */ +#define S2MPG11_EXTCTRL_UFS_EN 7 /* UFS_EN pin */ +#define S2MPG11_EXTCTRL_LDO13S_EN 8 /* VLDO13S_EN pin */ + #endif /* _DT_BINDINGS_REGULATOR_SAMSUNG_S2MPG10_H */ -- cgit v1.2.3