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[2620:137:e000::1:20]) by mx.google.com with ESMTP id e12-20020a170902784c00b001b01ab1d5e1si696728pln.78.2023.05.31.03.37.34; Wed, 31 May 2023 03:37:46 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235610AbjEaKWs (ORCPT + 99 others); Wed, 31 May 2023 06:22:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36264 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235349AbjEaKWH (ORCPT ); Wed, 31 May 2023 06:22:07 -0400 Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [IPv6:2001:67c:670:201:290:27ff:fe1d:cc33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CC78A18C for ; Wed, 31 May 2023 03:21:29 -0700 (PDT) Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1q4IxA-0002GX-QJ; Wed, 31 May 2023 12:21:16 +0200 Received: from [2a0a:edc0:0:1101:1d::ac] (helo=dude04.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtp (Exim 4.94.2) (envelope-from ) id 1q4Ix9-0045I6-Aj; Wed, 31 May 2023 12:21:15 +0200 Received: from ore by dude04.red.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1q4Ix8-00E4cr-Jy; Wed, 31 May 2023 12:21:14 +0200 From: Oleksij Rempel To: Maxime Coquelin , Alexandre Torgue , Rob Herring , Krzysztof Kozlowski , =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= Cc: Oleksij Rempel , kernel@pengutronix.de, linux-kernel@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH v3 2/2] ARM: dts: stm32: prtt1c: Add PoDL PSE regulator nodes Date: Wed, 31 May 2023 12:21:13 +0200 Message-Id: <20230531102113.3353065-3-o.rempel@pengutronix.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230531102113.3353065-1-o.rempel@pengutronix.de> References: <20230531102113.3353065-1-o.rempel@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: ore@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-kernel@vger.kernel.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1767405745197728194?= X-GMAIL-MSGID: =?utf-8?q?1767405745197728194?= This commit introduces Power over Data Line (PoDL) Power Source Equipment (PSE) regulator nodes to the PRTT1C devicetree. The addition of these nodes enables support for PoDL in PRTT1C devices, allowing power delivery and data transmission over a single twisted pair. The new PoDL PSE regulator nodes provide voltage capability information of the current board design, which can be used as a hint for system administrators when configuring and managing power settings. This update enhances the versatility and simplifies the power management of PRTT1C devices while ensuring compatibility with connected Powered Devices (PDs). After applying this patch, the power delivery can be controlled from user space with a patched [1] ethtool version using the following commands: ethtool --set-pse t1l2 podl-pse-admin-control enable to enable power delivery, and ethtool --show-pse t1l2 to display the PoDL PSE settings. By integrating PoDL PSE support into the PRTT1C devicetree, users can benefit from streamlined power and data connections in their deployments, improving overall system efficiency and reducing cabling complexity. [1] https://lore.kernel.org/all/20230317093024.1051999-1-o.rempel@pengutronix.de/ Signed-off-by: Oleksij Rempel --- arch/arm/boot/dts/stm32mp151a-prtt1c.dts | 32 ++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/arch/arm/boot/dts/stm32mp151a-prtt1c.dts b/arch/arm/boot/dts/stm32mp151a-prtt1c.dts index 58bb05a8c685..ca0d3329cfd7 100644 --- a/arch/arm/boot/dts/stm32mp151a-prtt1c.dts +++ b/arch/arm/boot/dts/stm32mp151a-prtt1c.dts @@ -23,6 +23,18 @@ clock_sja1105: clock-sja1105 { clock-frequency = <25000000>; }; + pse_t1l1: ethernet-pse-1 { + compatible = "podl-pse-regulator"; + pse-supply = <®_t1l1>; + #pse-cells = <0>; + }; + + pse_t1l2: ethernet-pse-2 { + compatible = "podl-pse-regulator"; + pse-supply = <®_t1l2>; + #pse-cells = <0>; + }; + mdio0: mdio { compatible = "virtual,mdio-gpio"; #address-cells = <1>; @@ -32,6 +44,24 @@ mdio0: mdio { }; + reg_t1l1: regulator-pse-t1l1 { + compatible = "regulator-fixed"; + regulator-name = "pse-t1l1"; + regulator-min-microvolt = <12000000>; + regulator-max-microvolt = <12000000>; + gpio = <&gpiog 13 GPIO_ACTIVE_HIGH>; + enable-active-high; + }; + + reg_t1l2: regulator-pse-t1l2 { + compatible = "regulator-fixed"; + regulator-name = "pse-t1l2"; + regulator-min-microvolt = <12000000>; + regulator-max-microvolt = <12000000>; + gpio = <&gpiog 14 GPIO_ACTIVE_HIGH>; + enable-active-high; + }; + wifi_pwrseq: wifi-pwrseq { compatible = "mmc-pwrseq-simple"; reset-gpios = <&gpiod 8 GPIO_ACTIVE_LOW>; @@ -92,6 +122,7 @@ t1l1_phy: ethernet-phy@7 { reset-gpios = <&gpiog 12 GPIO_ACTIVE_LOW>; reset-assert-us = <10>; reset-deassert-us = <35>; + pses = <&pse_t1l1>; }; /* TI DP83TD510E */ @@ -102,6 +133,7 @@ t1l2_phy: ethernet-phy@10 { reset-gpios = <&gpiog 11 GPIO_ACTIVE_LOW>; reset-assert-us = <10>; reset-deassert-us = <35>; + pses = <&pse_t1l2>; }; /* Micrel KSZ9031 */