From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from inva021.nxp.com (inva021.nxp.com [92.121.34.21]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 280F8198E91; Fri, 6 Feb 2026 12:01:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=92.121.34.21 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770379298; cv=none; b=ToEuWeWe9bNnKPRJRzWmYPWOqVyYmNjLAAmTA431NSpThROE3eeoe+4HSvGl+m+RBuZ1JhKyQIoSlNFPjHtjMxNpNbTd9HY9ytgvMaHdsZ8DF0ACwNWc+DVJHCsMJqHasEe3h5IvcKCyJpZGfYsvxoyEIhv79ZObAbWW4I1FMIE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770379298; c=relaxed/simple; bh=Hl7DJikOgKekIs0mpVk29DoVrudRGGAt9FxxAxRtMGE=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=ogQUpbuvsgT0u9z2VOFheP/UjY5x/yneaaJWXO26+nVFVAf2O+3oEnGJ+Sy6cThTBtKN71EMtBKvTJ5AKxRRqsYVZoL8d5Z/mKwB8mq2V469SDH69PcuxWvB69WkzBhhPJmelSCcFG4YE2zlmoIvfMdQjvMnoWnSSc22n0XSklM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=nxp.com; spf=pass smtp.mailfrom=nxp.com; arc=none smtp.client-ip=92.121.34.21 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=nxp.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=nxp.com Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 79D59202D8B; Fri, 6 Feb 2026 13:01:31 +0100 (CET) Received: from inva024.eu-rdc02.nxp.com (inva024.eu-rdc02.nxp.com [134.27.226.22]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 5717B202581; Fri, 6 Feb 2026 13:01:31 +0100 (CET) Received: from lsv15573.swis.ro-buh01.nxp.com (lsv15573.swis.ro-buh01.nxp.com [10.172.0.77]) by inva024.eu-rdc02.nxp.com (Postfix) with ESMTP id 412B1202AB; Fri, 6 Feb 2026 13:01:29 +0100 (CET) From: Aman Kumar Pandey To: linux-kernel@vger.kernel.org, linux-i3c@lists.infradead.org, alexandre.belloni@bootlin.com, krzk+dt@kernel.org, robh@kernel.org, conor+dt@kernel.org, devicetree@vger.kernel.org, broonie@kernel.org, lee@kernel.org, Frank.Li@nxp.com, lgirdwood@gmail.com Cc: vikash.bansal@nxp.com, priyanka.jain@nxp.com, shashank.rebbapragada@nxp.com, Aman Kumar Pandey Subject: [PATCH v5 2/5] dt-bindings: i3c: Add NXP P3H2x4x i3c-hub support Date: Fri, 6 Feb 2026 14:01:18 +0200 Message-Id: <20260206120121.856471-2-aman.kumarpandey@nxp.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20260206120121.856471-1-aman.kumarpandey@nxp.com> References: <20260206120121.856471-1-aman.kumarpandey@nxp.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Virus-Scanned: ClamAV using ClamSMTP Add bindings for the NXP P3H2x4x (P3H2440/P3H2441/P3H2840/P3H2841) multiport I3C hub family. These devices connect to a host via I3C/I2C/SMBus and allow communication with multiple downstream peripherals. Signed-off-by: Aman Kumar Pandey Signed-off-by: Vikash Bansal --- Changes in v5: - Removed SW properties: cp0-ldo-microvolt,cp1-ldo-microvolt, tp0145-ldo-microvolt, tp2367-ldo-microvolt - Changed supply entries and its descriptions Changes in v4: - Fixed DT binding check warning - Removed SW properties: ibi-enable, local-dev, and always-enable Changes in v3: - Added MFD (Multi-Function Device) support for I3C hub and on-die regulator - Added Regulator supply node Changes in v2: - Fixed DT binding check warning - Revised logic for parsing DTS nodes --- --- .../devicetree/bindings/i3c/nxp,p3h2840.yaml | 209 ++++++++++++++++++ MAINTAINERS | 8 + 2 files changed, 217 insertions(+) create mode 100644 Documentation/devicetree/bindings/i3c/nxp,p3h2840.yaml diff --git a/Documentation/devicetree/bindings/i3c/nxp,p3h2840.yaml b/Documentation/devicetree/bindings/i3c/nxp,p3h2840.yaml new file mode 100644 index 000000000000..edc1f988c0d5 --- /dev/null +++ b/Documentation/devicetree/bindings/i3c/nxp,p3h2840.yaml @@ -0,0 +1,209 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +# Copyright 2025 NXP +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/i3c/nxp,p3h2840.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: NXP P3H2X4X I3C HUB + +maintainers: + - Aman Kumar Pandey + - Vikash Bansal + +description: | + P3H2x4x (P3H2440/P3H2441/P3H2840/P3H2841) is a family of multiport I3C + hub devices that connect to:- + 1. A host CPU via I3C/I2C/SMBus bus on upstream side and connect to multiple + peripheral devices on the downstream side. + 2. Have two Controller Ports which can support either + I2C/SMBus or I3C buses and connect to a CPU, BMC or SOC. + 3. P3H2840/ P3H2841 are 8 port I3C hub with eight I3C/I2C Target Port. + 4. P3H2440/ P3H2441 are 4 port I3C hub with four I3C/I2C Target Port. + Target ports can be configured as I2C/SMBus, I3C or GPIO and connect to + peripherals. + +allOf: + - $ref: /schemas/i3c/i3c.yaml# + +properties: + compatible: + const: nxp,p3h2840 + + tp0145-pullup-ohms: + description: + Selects the pull up resistance for target Port 0/1/4/5, in ohms. + enum: [250, 500, 1000, 2000] + default: 500 + + tp2367-pullup-ohms: + description: + Selects the pull up resistance for target Port 2/3/6/7, in ohms. + enum: [250, 500, 1000, 2000] + default: 500 + + cp0-io-strength-ohms: + description: + Selects the IO drive strength for controller Port 0, in ohms. + enum: [20, 30, 40, 50] + default: 20 + + cp1-io-strength-ohms: + description: + Selects the IO drive strength for controller Port 1, in ohms. + enum: [20, 30, 40, 50] + default: 20 + + tp0145-io-strength-ohms: + description: + Selects the IO drive strength for target port 0/1/4/5, in ohms. + enum: [20, 30, 40, 50] + default: 20 + + tp2367-io-strength-ohms: + description: + Selects the IO drive strength for target port 2/3/6/7, in ohms. + enum: [20, 30, 40, 50] + default: 20 + + vcc1-supply: + description: Controller port 0 power supply. + + vcc2-supply: + description: Controller port 1 power supply. + + vcc3-supply: + description: Target port 0/1/4/5 power supply. + + vcc4-supply: + description: Target port 2/3/6/7 power supply. + + regulators: + type: object + additionalProperties: false + + properties: + LDO_CP0: + type: object + $ref: /schemas/regulator/regulator.yaml# + unevaluatedProperties: false + + LDO_CP1: + type: object + $ref: /schemas/regulator/regulator.yaml# + unevaluatedProperties: false + + LDO_TPG0: + type: object + $ref: /schemas/regulator/regulator.yaml# + unevaluatedProperties: false + + LDO_TPG1: + type: object + $ref: /schemas/regulator/regulator.yaml# + unevaluatedProperties: false + +patternProperties: + "^i3c@[0-7]$": + type: object + $ref: /schemas/i3c/i3c.yaml# + unevaluatedProperties: false + + properties: + reg: + description: + The I3C HUB Target Port number. + maxItems: 1 + + pullup-enable: + type: boolean + description: + Enables the on-die pull-up for Target Port. + + "^(i2c|smbus)@[0-7]$": + type: object + $ref: /schemas/i2c/i2c-controller.yaml# + unevaluatedProperties: false + + properties: + reg: + description: + The I3C HUB Target Port number. + maxItems: 1 + + pullup-enable: + type: boolean + description: + Enables the on-die pull-up for Target Port. + +unevaluatedProperties: false + +examples: + - | + i3c { + #address-cells = <3>; + #size-cells = <0>; + + hub@70,236153000c2 { + reg = <0x70 0x236 0x3000c2>; + #address-cells = <1>; + #size-cells = <0>; + assigned-address = <0x50>; + + tp0145-pullup-ohm = <1000>; + tp2367-pullup-ohm = <1000>; + cp0-io-strength-ohm = <50>; + cp1-io-strength-ohm = <50>; + tp0145-io-strength-ohm = <50>; + tp2367-io-strength-ohm = <50>; + vcc3-supply = <®_tpg0>; + vcc4-supply = <®_tpg1>; + + regulators { + reg_cp0: LDO_CP0 { + regulator-name = "ldo_cp0"; + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + }; + + reg_cp1: LDO_CP1 { + regulator-name = "ldo_cp1"; + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + }; + + reg_tpg0: LDO_TPG0 { + regulator-name = "ldo_tpg0"; + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + }; + + reg_tpg1: LDO_TPG1 { + regulator-name = "ldo_tpg1"; + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + }; + }; + + smbus@0 { + reg = <0x0>; + #address-cells = <1>; + #size-cells = <0>; + pullup-enable; + }; + + i2c@1 { + reg = <0x1>; + #address-cells = <1>; + #size-cells = <0>; + pullup-enable; + }; + + i3c@2 { + reg = <0x2>; + #address-cells = <3>; + #size-cells = <0>; + pullup-enable; + }; + }; + }; diff --git a/MAINTAINERS b/MAINTAINERS index e08767323763..7e1a6cb22ca3 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -18906,6 +18906,14 @@ S: Maintained F: Documentation/devicetree/bindings/ptp/nxp,ptp-netc.yaml F: drivers/ptp/ptp_netc.c +NXP P3H2X4X I3C-HUB DRIVER +M: Vikash Bansal +M: Aman Kumar Pandey +L: linux-kernel@vger.kernel.org +L: linux-i3c-owner@lists.infradead.org +S: Maintained +F: Documentation/devicetree/bindings/i3c/nxp,p3h2840.yaml + NXP PF5300/PF5301/PF5302 PMIC REGULATOR DEVICE DRIVER M: Woodrow Douglass S: Maintained -- 2.25.1