From nobody Tue Feb 10 00:57:48 2026 Received: from mail-ej1-f54.google.com (mail-ej1-f54.google.com [209.85.218.54]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 49A9F32AAD1 for ; Mon, 5 Jan 2026 09:01:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.218.54 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767603706; cv=none; b=ZvnxobjfsYSAnDuKR+aBHFarSbO5OfmMFIdVn3NB6klVeJza80mziklK/BadDtyALYduz3cyN9NuFVYWNZkZa7GBBKotW2awasdIRrE/R/ECGzaA8XffGspGCheHZRuEVzrpMv412ZLr71su3fv2VXU4t11r5h1g/p5mzbiMhFc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767603706; c=relaxed/simple; bh=cDTIGWVXEzPLuyGXqisxpp/99/qwRzUDF6t1zWY9mLU=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=CUujgqxPTe7uShQl84c4Pb9TLyrTAQMTHxqdKO0eBI83mDdLNK9HZqSx/9c3DNeS0WIjhgHixo3fsir0zSObuAACyIgCxp7iLaROgPv7B767n19P6NvgCut24l6VcN+JeyaLWJawSO286xpnki4Q6MUM9KUbs85CeJkax40+q4c= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org; spf=pass smtp.mailfrom=linaro.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b=Bhnccrez; arc=none smtp.client-ip=209.85.218.54 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linaro.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="Bhnccrez" Received: by mail-ej1-f54.google.com with SMTP id a640c23a62f3a-b8052725de4so1423704066b.0 for ; Mon, 05 Jan 2026 01:01:42 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1767603701; x=1768208501; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=g5aG9UiTB7Vj3Otot6zn2A2WjymKMwzj8kzNU4i6XLo=; b=BhnccrezHD8NDD4vmVMM1d17cLa6u75J9l+ec4naBeMeMxDIYPpXDJDFLUJnqoQ5AV 9tkNxQey0u9b6F+F1ghgv/2Q7PqTC49uXjiO7gDO2dAxaQC8dlYF3j73fTDpbIlYSVBo onqbHSswT40jBTTEKvQ/YtgYJQKjm859Jy11q4RfkhEwV40Zgu5y22wp9ObNLfQXVPwT 69nvj6OFHeoD4iTLYnbAiDHF5r1NmVzqPurw0xjo3nrC/YLoUMnXFTSn3rnc4ksu+/mC rdVpj5frVnq/R9NfLGkvjJ9ExP0XPkl+tj+zcf+xFpEUTJvyJojNutGb3soJWqYPrqj7 RYww== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1767603701; x=1768208501; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-gg:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=g5aG9UiTB7Vj3Otot6zn2A2WjymKMwzj8kzNU4i6XLo=; b=vrvZ2kgKro3cOpgkvwQTslQjxwB5abOlxYkuVjC9PDpIAa7bZP8o3Ax8Tm7l2CF62s lC/X/LmLw4E4v27KqsUpIQOrzbra/dnSPPnodHdwInbJJux+/uuXiU9Nz/bXB2R1WSPP glt6cTm+COTJ1SNQOVk/s4vCsLFm0QL2mr1gK5xtXeVVQCe3jbcbek2x/WFt9pUp17QD AHJoSPXVBJcXIYudq3PmJ/Aaffuj2AmaYOFSGUien69ylKf6/YIskWQaOMwaFWryVqt2 TzEtK/F2vPPVQLk8cq1ZnnXW5N1frame6xBWilBTpde5qSJwnBjAMFma5BnPTF1+0ugp p58w== X-Forwarded-Encrypted: i=1; AJvYcCVv+coSvJd39/i/6DHf3XXUbJj50nbQZ4OFSaj2IIqRmgdF3dOfKq3dJmNAxavegHxDSCdcCkzvo3m8++o=@vger.kernel.org X-Gm-Message-State: AOJu0YxMarjDmHWVld+Hvgu2irjfmZJ7RHP64vXEM2lgZLmFcVOGTJf2 AuJbfeT0c9v09PHkWkHG2aKWO23XZ99QD6K+v4NPy+gg7VlR/V9cAM1KJbPaYaaNTwA= X-Gm-Gg: AY/fxX7lSaINMcBp86JhXMwNFP7J50+Qb8jr4oRdTYNA9PQzkLL3RweD77IwI1d+1+j 6wedII7qcOrO7QzrW3Tw9GntCTrIOzphV8HosIqe7kikQ64B41MHdt/Gcp5d032+HkTxubNRrxp qMRMoFLueHFUda36w2zkFnzmd0wpFMbEq7aiiSblm/wBRWGFPMnfMXfdjDwxBrZjRUMCW8f8ry7 CXlKF1jyj0XtQmOw7rILCOqzGCq5xAUjDgyChlcmhuPjQvl7xeF0aMwJa52sHU2JMoJl8g6kKdF 6CYRE4v+oD2ntkOBE0+w+dNT0TlCfuHQAQixujjvRUqwECt6AEqBOwugsN+c5vwSs0Kfj/RL7TQ x2OTovJUZLSw2Y+AIvyrJ5HmHM5dDyObl6ejiDqax4vGZXsjzmrtWjhBdSp/6mvBacs9sPfXsg9 WN3w4Djo9pfzXqoN3l+PBVBBCw8vVXMGaO/nJ2tCsoi9PIBDQr6SSlsmQbwV1JSkk7GHG5+hXOo KjPeA== X-Google-Smtp-Source: AGHT+IFoBKeSVDsupuRxjxp2fuvvNtk/MkHxHnvNLpwYXyVfiMeBXdQyDeOmYvEJFR5Fl5glt5Wcbw== X-Received: by 2002:a17:907:fdca:b0:b7a:2ba7:1988 with SMTP id a640c23a62f3a-b8036ebbbd0mr4659371866b.9.1767603701295; Mon, 05 Jan 2026 01:01:41 -0800 (PST) Received: from puffmais2.c.googlers.com (244.175.141.34.bc.googleusercontent.com. [34.141.175.244]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b8037f0ecb9sm5384010466b.56.2026.01.05.01.01.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 05 Jan 2026 01:01:40 -0800 (PST) From: =?utf-8?q?Andr=C3=A9_Draszik?= Date: Mon, 05 Jan 2026 09:01:38 +0000 Subject: [PATCH v6 02/20] regulator: dt-bindings: add s2mpg10-pmic regulators Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260105-s2mpg1x-regulators-v6-2-80f4b6d1bf9d@linaro.org> References: <20260105-s2mpg1x-regulators-v6-0-80f4b6d1bf9d@linaro.org> In-Reply-To: <20260105-s2mpg1x-regulators-v6-0-80f4b6d1bf9d@linaro.org> To: Tudor Ambarus , Rob Herring , Conor Dooley , Krzysztof Kozlowski , Liam Girdwood , Mark Brown , Lee Jones , Bartosz Golaszewski , Krzysztof Kozlowski , Linus Walleij , Bartosz Golaszewski , Linus Walleij Cc: Peter Griffin , Will McVicker , Juan Yescas , 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?= , Krzysztof Kozlowski X-Mailer: b4 0.14.2 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: Andr=C3=A9 Draszik --- v4: - Krzysztof: - move additionalProperties to after allOf - use $defs, not definitions v3: - drop PCTRLSEL values that can be described using standard properties (Krzysztof), drop useless ones, rename the remaining ones - drop maxItems:1 where not needed (Krzysztof) - samsung,ext-control-gpios -> enable-gpios (Krzysztof) - fix LDO20M_EN pin name -> VLDO20M_EN v2: - drop | (literal style mark) from samsung,ext-control-gpios description --- .../regulator/samsung,s2mpg10-regulator.yaml | 158 +++++++++++++++++= ++++ MAINTAINERS | 1 + .../regulator/samsung,s2mpg10-regulator.h | 39 +++++ 3 files changed, 198 insertions(+) diff --git a/Documentation/devicetree/bindings/regulator/samsung,s2mpg10-re= gulator.yaml b/Documentation/devicetree/bindings/regulator/samsung,s2mpg10-= regulator.yaml new file mode 100644 index 0000000000000000000000000000000000000000..7252f94b3a8f3ae339ff6cf3080= 786ba88d44f7e --- /dev/null +++ b/Documentation/devicetree/bindings/regulator/samsung,s2mpg10-regulator= .yaml @@ -0,0 +1,158 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/regulator/samsung,s2mpg10-regulator.yam= l# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Samsung S2MPG10 Power Management IC regulators + +maintainers: + - Andr=C3=A9 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 extern= al + (hardware) signals. If so, this property configures the signal t= he PMIC + should monitor. For S2MPG10 rails where external control is poss= ible 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 + + $ref: /schemas/types.yaml#/definitions/uint32 + minimum: 0 + maximum: 12 + + enable-gpios: + description: + For rails where external control is done via a GPIO, this option= al + property describes the GPIO line used. + + dependentRequired: + enable-gpios: [ "samsung,ext-control" ] + +allOf: + # Bucks 8, 9, and LDO 1 can not be controlled externally - above definit= ion + # allows it and we deny it here. This approach reduces repetition. + - if: + anyOf: + - required: [buck8m] + - required: [buck9m] + - required: [ldo1m] + then: + patternProperties: + "^(buck[8-9]|ldo1)m$": + properties: + samsung,ext-control: false + +additionalProperties: false diff --git a/MAINTAINERS b/MAINTAINERS index adbe6a93a3927174af26318a6eb9db667c0b4ad0..03fbdb9d1565664528e0ccf7d08= 596f80441b301 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -23312,6 +23312,7 @@ 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/ =20 SAMSUNG S3C24XX/S3C64XX SOC SERIES CAMIF DRIVER diff --git a/include/dt-bindings/regulator/samsung,s2mpg10-regulator.h b/in= clude/dt-bindings/regulator/samsung,s2mpg10-regulator.h new file mode 100644 index 0000000000000000000000000000000000000000..4a6bf13442f50bb1c475728722e= aebd0ec3dcbfa --- /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 regula= tors + * 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 */ --=20 2.52.0.351.gbe84eed79e-goog