From nobody Fri Dec 19 13:51:58 2025 Received: from mx07-00178001.pphosted.com (mx08-00178001.pphosted.com [91.207.212.93]) (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 A135D19FA92; Tue, 27 Aug 2024 12:35:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.207.212.93 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724762144; cv=none; b=TmvEOpwtBmStudwOppDdrmGSY49wwKYpWLsIpzFrVmCK0534oNQHuW9uMxQR3aATtOcFBk8YuSqhw5g+MRZKbJu/qORLuI+TSRu4dyt0x6o5ShPONLSZWDFz2w9ZuHE55Ab7Fb+Qj+t4icVYj5DamQntwbnXWA5k/e/NI9D3hJs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724762144; c=relaxed/simple; bh=nH7uwO43ZeC4zoCxGfY47N5MlIw1l1d0SbS2+adgG54=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=OUSeU5v2plZnCLs/2Uon3NHM4P3Ui0PViqmGFicVCTYNOSsV49ZWoJSiosxU0UGJv8gKVpuwayWyvPv48uB4XOP9GrztxL++pdvFioBR6Q8c0P4AjvfyH4F6ZlRkLCTO27a4X3aseyVfQT0kBVojXbmjA5ksXaRFgUH2hNqpfKs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=foss.st.com; spf=pass smtp.mailfrom=foss.st.com; dkim=pass (2048-bit key) header.d=foss.st.com header.i=@foss.st.com header.b=TrcpmO+l; arc=none smtp.client-ip=91.207.212.93 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=foss.st.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=foss.st.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=foss.st.com header.i=@foss.st.com header.b="TrcpmO+l" Received: from pps.filterd (m0046660.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 47R9SOpP023054; Tue, 27 Aug 2024 14:26:18 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=selector1; bh= qaV23H5iTC7V7od63mOeYWFlEgXDAQnAkjkLWH9yvVU=; b=TrcpmO+lvJpIZm7H fVf/xu1paKYr5w91euOk+7qhLbFSHaLhn8MvIEHjEtITFrkIJ5ntJxkpr3MqY4kb PgaPLzyNNnXLhM4t927szfbYwziFVnWuPHNawvOHISd/wAojCaeFBNNegWKV+JW4 lBod7n4+qC7aTF3SYvPoKh3fMrZ8qSukWy+OisTkSuhFzb1sl3YjJplk3vN9Kq5j Pgp5ARn5nCozurpTJh581Td4NuYX1bDeCDpqFP8XuPyLcQ0/jxmGOORvKCWVGyCu XXsmSvlNT6jrp2NiVryqv91lThD3oPv+dyp2zPGWqsJ403FnpgMnkNqjvJJ0ROkD JoHSsQ== Received: from beta.dmz-ap.st.com (beta.dmz-ap.st.com [138.198.100.35]) by mx07-00178001.pphosted.com (PPS) with ESMTPS id 419c6u0tb9-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 27 Aug 2024 14:26:17 +0200 (MEST) Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-ap.st.com (STMicroelectronics) with ESMTP id 9AC3A4002D; Tue, 27 Aug 2024 14:26:13 +0200 (CEST) Received: from Webmail-eu.st.com (shfdag1node3.st.com [10.75.129.71]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id E752326333C; Tue, 27 Aug 2024 14:25:23 +0200 (CEST) Received: from localhost (10.129.178.212) by SHFDAG1NODE3.st.com (10.75.129.71) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.37; Tue, 27 Aug 2024 14:25:23 +0200 From: Christian Bruel To: , , , , , , , CC: , , , , , , Christian Bruel Subject: [PATCH 1/5] dt-bindings: phy: Add STM32MP25 COMBOPHY bindings Date: Tue, 27 Aug 2024 14:24:55 +0200 Message-ID: <20240827122459.1102889-2-christian.bruel@foss.st.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240827122459.1102889-1-christian.bruel@foss.st.com> References: <20240827122459.1102889-1-christian.bruel@foss.st.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: SHFCAS1NODE2.st.com (10.75.129.73) To SHFDAG1NODE3.st.com (10.75.129.71) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.28.16 definitions=2024-08-27_06,2024-08-27_01,2024-05-17_01 Content-Type: text/plain; charset="utf-8" Document the bindings for STM32 COMBOPHY interface, used to support the PCIe and USB3 stm32mp25 drivers. Following entries can be used to tune caracterisation parameters - st,output-micro-ohms and st,output-vswing-microvolt bindings entries to tune the impedance and voltage swing using discrete simulation results - st,rx-equalizer register to set the internal rx equalizer filter value. Reviewed-by: Rob Herring (Arm) Signed-off-by: Christian Bruel --- .../bindings/phy/st,stm32-combophy.yaml | 144 ++++++++++++++++++ 1 file changed, 144 insertions(+) create mode 100644 Documentation/devicetree/bindings/phy/st,stm32-combophy= .yaml diff --git a/Documentation/devicetree/bindings/phy/st,stm32-combophy.yaml b= /Documentation/devicetree/bindings/phy/st,stm32-combophy.yaml new file mode 100644 index 000000000000..c33a843b83a3 --- /dev/null +++ b/Documentation/devicetree/bindings/phy/st,stm32-combophy.yaml @@ -0,0 +1,144 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/phy/st,stm32-combophy.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: STMicroelectronics STM32MP25 USB3/PCIe COMBOPHY + +maintainers: + - Christian Bruel + +description: + Single lane PHY shared (exclusive) between the USB3 and PCIe controllers. + Supports 5Gbit/s for USB3 and PCIe gen2 or 2.5Gbit/s for PCIe gen1. + +properties: + compatible: + const: st,stm32mp25-combophy + + reg: + maxItems: 1 + + "#phy-cells": + const: 1 + description: | + The cells contain the following arguments. + + - description: The PHY type + enum: + - PHY_TYPE_USB3 + - PHY_TYPE_PCIE + + clocks: + minItems: 2 + items: + - description: apb Bus clock mandatory to access registers. + - description: ker Internal RCC reference clock for USB3 or PCIe + - description: pad Optional on board clock input for PCIe only. Typi= cally an + external 100Mhz oscillator wired on dedicated CLKIN p= ad. Used as reference + clock input instead of the ker + + clock-names: + minItems: 2 + items: + - const: apb + - const: ker + - const: pad + + resets: + maxItems: 1 + + reset-names: + const: phy + + power-domains: + maxItems: 1 + + wakeup-source: true + + interrupts: + maxItems: 1 + description: interrupt used for wakeup + + access-controllers: + minItems: 1 + maxItems: 2 + + st,syscfg: + $ref: /schemas/types.yaml#/definitions/phandle + description: Phandle to the SYSCON entry required for configuring PCIe + or USB3. + + st,ssc-on: + type: boolean + description: + A boolean property whose presence indicates that the SSC for common = clock + needs to be set. + + st,rx-equalizer: + $ref: /schemas/types.yaml#/definitions/uint32 + minimum: 0 + maximum: 7 + default: 2 + description: + A 3 bit value to tune the RX fixed equalizer setting for optimal eye= compliance + + st,output-micro-ohms: + minimum: 3999000 + maximum: 6090000 + default: 4968000 + description: + A value property to tune the Single Ended Output Impedance, simulati= ons results + at 25C for a VDDP=3D0.8V. The hardware accepts discrete values in th= is range. + + st,output-vswing-microvolt: + minimum: 442000 + maximum: 803000 + default: 803000 + description: + A value property in microvolt to tune the Single Ended Output Voltag= e Swing to change the + Vlo, Vhi for a VDDP =3D 0.8V. The hardware accepts discrete values i= n this range. + +required: + - compatible + - reg + - st,syscfg + - '#phy-cells' + - resets + - reset-names + - clocks + - clock-names + +allOf: + - if: + required: + - wakeup-source + then: + anyOf: + - required: [interrupts] + - required: [interrupts-extended] + +additionalProperties: false + +examples: + - | + #include + #include + #include + + combophy: phy@480c0000 { + compatible =3D "st,stm32mp25-combophy"; + reg =3D <0x480c0000 0x1000>; + #phy-cells =3D <1>; + clocks =3D <&rcc CK_BUS_USB3PCIEPHY>, <&rcc CK_KER_USB3PCIEPHY>; + clock-names =3D "apb", "ker"; + resets =3D <&rcc USB3PCIEPHY_R>; + reset-names =3D "phy"; + st,syscfg =3D <&syscfg>; + access-controllers =3D <&rifsc 67>; + power-domains =3D <&CLUSTER_PD>; + wakeup-source; + interrupts-extended =3D <&exti1 45 IRQ_TYPE_EDGE_FALLING>; + }; +... --=20 2.34.1