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[34.34.48.254]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b70b9f29c8asm466765066b.8.2025.11.03.11.14.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 Nov 2025 11:14:45 -0800 (PST) From: =?utf-8?q?Andr=C3=A9_Draszik?= Date: Mon, 03 Nov 2025 19:14:43 +0000 Subject: [PATCH v3 04/20] regulator: dt-bindings: add s2mpg11-pmic regulators Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Message-Id: <20251103-s2mpg1x-regulators-v3-4-b8b96b79e058@linaro.org> References: <20251103-s2mpg1x-regulators-v3-0-b8b96b79e058@linaro.org> In-Reply-To: <20251103-s2mpg1x-regulators-v3-0-b8b96b79e058@linaro.org> To: Tudor Ambarus , Rob Herring , Conor Dooley , Krzysztof Kozlowski , Liam Girdwood , Mark Brown , Lee Jones , Linus Walleij , Bartosz Golaszewski , Krzysztof Kozlowski Cc: Peter Griffin , Will McVicker , kernel-team@android.com, linux-kernel@vger.kernel.org, linux-samsung-soc@vger.kernel.org, devicetree@vger.kernel.org, linux-gpio@vger.kernel.org, =?utf-8?q?Andr=C3=A9_Draszik?= X-Mailer: b4 0.14.2 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'. Signed-off-by: André Draszik --- Note: checkpatch suggests to update MAINTAINERS, but the new file is covered already due to using a wildcard. v3: - mention NTC thermistor inputs in commit message - drop PCTRLSEL values that can be described using standard properties (Krzysztof), drop useless ones, rename the remaining ones - drop maxItems:1 where not needed (Krzysztof) - samsung,ext-control-gpios -> enable-gpios (Krzysztof) - drop buckboost from 'allOf' limitation - not needed as it has its own specific description v2: - fix commit message typos: s2mp1 -> s2mpg1 - mention GPIOs in commit message --- .../regulator/samsung,s2mpg11-regulator.yaml | 136 +++++++++++++++++++++ .../regulator/samsung,s2mpg10-regulator.h | 14 +++ 2 files changed, 150 insertions(+) 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 0000000000000000000000000000000000000000..0080ac23b6c926cdc632903e2b2716c12e8a4991 --- /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. + +definitions: + 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_PCTRLSEL_PWREN - PWREN pin + - 1 # S2MPG11_PCTRLSEL_PWREN_MIF - PWREN_MIF pin + - 2 # S2MPG11_PCTRLSEL_AP_ACTIVE_N - ~AP_ACTIVE_N pin + - 3 # S2MPG11_PCTRLSEL_G3D_EN - G3D_EN pin + - 4 # S2MPG11_PCTRLSEL_G3D_EN2 - G3D_EN & ~AP_ACTIVE_N pins + - 5 # S2MPG11_PCTRLSEL_AOC_VDD - AOC_VDD pin + - 6 # S2MPG11_PCTRLSEL_AOC_RET - AOC_RET pin + - 7 # S2MPG11_PCTRLSEL_UFS_EN - UFS_EN pin + - 8 # S2MPG11_PCTRLSEL_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" ] + +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: + - $ref: "#/definitions/s2mpg11-ext-control" + + properties: + regulator-ramp-delay: + enum: [6250, 12500, 25000] + default: 6250 + + # 11 standard LDOs + "^ldo([3-79]|1[01245])s$": + 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: + - $ref: "#/definitions/s2mpg11-ext-control" + + properties: + regulator-ramp-delay: false + + # 2 LDOs with ramp support and possible external control + "^ldo[12]s$": + type: object + $ref: regulator.yaml# + unevaluatedProperties: false + description: + Properties for a single LDO regulator. + + allOf: + - $ref: "#/definitions/s2mpg11-ext-control" + + properties: + regulator-ramp-delay: + enum: [6250, 12500] + default: 6250 + +additionalProperties: false + +allOf: + # Bucks 4, 6, 7 and 10 can not be controlled externally - above definition + # allows it and we deny it here. This approach reduces repetition. + - if: + anyOf: + - required: [buck4s] + - required: [buck6s] + - required: [buck7s] + - required: [buck10s] + then: + patternProperties: + "^buck([467]|10)s$": + properties: + samsung,ext-control: false diff --git a/include/dt-bindings/regulator/samsung,s2mpg10-regulator.h b/include/dt-bindings/regulator/samsung,s2mpg10-regulator.h index 4a6bf13442f50bb1c475728722eaebd0ec3dcbfa..d9c16bba4d85809df99c2887b8dc61ea1bea5ad1 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 */ -- 2.51.2.997.g839fc31de9-goog