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Signed-off-by: Shengyu Qu --- arch/arm/boot/dts/ti/omap/am335x-bone-common.dtsi | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/boot/dts/ti/omap/am335x-bone-common.dtsi b/arch/arm/boot/dts/ti/omap/am335x-bone-common.dtsi index b958607c71dc..7b784a87efc6 100644 --- a/arch/arm/boot/dts/ti/omap/am335x-bone-common.dtsi +++ b/arch/arm/boot/dts/ti/omap/am335x-bone-common.dtsi @@ -215,6 +215,7 @@ tps: tps@24 { baseboard_eeprom: baseboard_eeprom@50 { compatible = "atmel,24c256"; reg = <0x50>; + vcc-supply = <&ldo4_reg>; #address-cells = <1>; #size-cells = <1>; From patchwork Sun Aug 6 08:50:44 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shengyu Qu X-Patchwork-Id: 131576 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:c44e:0:b0:3f2:4152:657d with SMTP id w14csp857598vqr; Sun, 6 Aug 2023 03:24:49 -0700 (PDT) X-Google-Smtp-Source: AGHT+IH+Op5tYvjmsCKClbWNKp+Vl4Ta/0B3vdVpuH34uCXje8SxDuOnLh6vB6NVf8QdME6GCvZ2 X-Received: by 2002:a05:6a20:8f02:b0:13f:8855:d5a0 with SMTP id b2-20020a056a208f0200b0013f8855d5a0mr6923947pzk.50.1691317489122; Sun, 06 Aug 2023 03:24:49 -0700 (PDT) ARC-Seal: i=2; a=rsa-sha256; t=1691317489; cv=pass; d=google.com; s=arc-20160816; b=pCnI5HejU/pRwA3M3b/YTIGWGUhLfKtOHYuylTuLUxLUwOKFBn9gd7I1NL5liYAl3Z U2gFnaJy/6Wn/Hu+HyB8TV/t9pOPQxHhXQoiYgneR1g8HY7izGRZmQdUpQJnin/QL1E6 vj1cPGVOpc86JiO5RWPRU+IMNyVw/VVGhdOwDAxiFe75lQTeC7hkoApbnd5vRgYfDohW HTcty0NFi6xWwEYPT0wldhfu+sifPKC7sRYre3r833O9oTGYZx5v1e/p3mDogQfzXBkX QutMHcBpMTtGmWETa29+3Vb4aUPxXMIDZsAaRC6jsEPrYZftYNAzkIAPHDvDMoaS/Nnv FZ1Q== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:mime-version:content-transfer-encoding :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=2Khh81vYBKAaFr7jdyAXoN0n0+VShZktqdwggVFOv0Q=; fh=LWhVFwyMTIo+AznxEvDCCBSjnZDmdwAR8ebmf4Piqfo=; b=csn+jQdwIKZ5vUtIGuJBKRBTe0jDIrbMmXL/isixsv4TEjw5PJT2cCZH8EnZGngNBr aWPgo9ecY8Kr2jjy7Ak/PY1PGlfi7xdxWPZ4ruwXCsq+hqI2T6dX1CugWRu6+66oLHII gImqibxzg5Z1TFOI4vt6xLpZ++xoQc4NnoIe3S0xDz/zeEQA2nwimmZC0TJ/WaEBRDG1 fYKqgeV/UjQnn0mGhZG//O1tsXQQPDFOsIXcruM8JUP+3Y1RnQUFIUZCa+yIOLOvAi1r c/BWnwspUleOLUz5TJb1byQgXFpeyQIsFC95LvSkKn3ivO1UDuzDVm4+F0lAJosG/jxO Ht/w== ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@outlook.com header.s=selector1 header.b=ZkbKG4c2; arc=pass (i=1); 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; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=outlook.com Received: from out1.vger.email (out1.vger.email. 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Sun, 6 Aug 2023 08:51:07 +0000 Received: from TY3P286MB2611.JPNP286.PROD.OUTLOOK.COM ([fe80::e67d:f61a:b248:f597]) by TY3P286MB2611.JPNP286.PROD.OUTLOOK.COM ([fe80::e67d:f61a:b248:f597%3]) with mapi id 15.20.6652.025; Sun, 6 Aug 2023 08:51:07 +0000 From: Shengyu Qu To: bcousson@baylibre.com, tony@atomide.com, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, linux-omap@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Shengyu Qu , Robert Nelson Subject: [PATCH v2 2/2] ARM: dts: am335x-bone-common: Add GPIO PHY reset on revision C3 board Date: Sun, 6 Aug 2023 16:50:44 +0800 Message-ID: X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230806085044.1917-1-wiagn233@outlook.com> References: <20230806085044.1917-1-wiagn233@outlook.com> X-TMN: [VtcDqVYiCXUdq5keDeYzGRdxgwbdzdYv] X-ClientProxiedBy: TY2PR06CA0024.apcprd06.prod.outlook.com (2603:1096:404:42::36) To TY3P286MB2611.JPNP286.PROD.OUTLOOK.COM (2603:1096:400:23e::10) X-Microsoft-Original-Message-ID: <20230806085044.1917-3-wiagn233@outlook.com> MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: TY3P286MB2611:EE_|OS3P286MB2744:EE_ X-MS-Office365-Filtering-Correlation-Id: bd9b87c8-e33d-4ef6-6e19-08db965a45fe X-MS-Exchange-SLBlob-MailProps: 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 X-Microsoft-Antispam: BCL:0; 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This fixes a random phy startup failure bug discussed at [1]. The GPIO pin used for reset is not used on older revisions, so it is ok to apply to all board revisions. The reset timing was discussed and tested at [2]. [1] https://forum.digikey.com/t/ethernet-device-is-not-detecting-on-ubuntu-20-04-lts-on-bbg/19948 [2] https://forum.beagleboard.org/t/recognizing-a-beaglebone-black-rev-c3-board/31249/ Signed-off-by: Robert Nelson Signed-off-by: Shengyu Qu --- Changes since v1: - Using /**/ rather than // to comment --- arch/arm/boot/dts/ti/omap/am335x-bone-common.dtsi | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/arm/boot/dts/ti/omap/am335x-bone-common.dtsi b/arch/arm/boot/dts/ti/omap/am335x-bone-common.dtsi index 7b784a87efc6..96451c8a815c 100644 --- a/arch/arm/boot/dts/ti/omap/am335x-bone-common.dtsi +++ b/arch/arm/boot/dts/ti/omap/am335x-bone-common.dtsi @@ -145,6 +145,8 @@ davinci_mdio_default: davinci-mdio-default-pins { /* MDIO */ AM33XX_PADCONF(AM335X_PIN_MDIO, PIN_INPUT_PULLUP | SLEWCTRL_FAST, MUX_MODE0) AM33XX_PADCONF(AM335X_PIN_MDC, PIN_OUTPUT_PULLUP, MUX_MODE0) + /* Added to support GPIO controlled PHY reset */ + AM33XX_PADCONF(AM335X_PIN_UART0_CTSN, PIN_OUTPUT_PULLUP, MUX_MODE7) >; }; @@ -153,6 +155,8 @@ davinci_mdio_sleep: davinci-mdio-sleep-pins { /* MDIO reset value */ AM33XX_PADCONF(AM335X_PIN_MDIO, PIN_INPUT_PULLDOWN, MUX_MODE7) AM33XX_PADCONF(AM335X_PIN_MDC, PIN_INPUT_PULLDOWN, MUX_MODE7) + /* Added to support GPIO controlled PHY reset */ + AM33XX_PADCONF(AM335X_PIN_UART0_CTSN, PIN_INPUT_PULLDOWN, MUX_MODE7) >; }; @@ -378,6 +382,10 @@ &davinci_mdio_sw { ethphy0: ethernet-phy@0 { reg = <0>; + /* Support GPIO reset on revision C3 boards */ + reset-gpios = <&gpio1 8 GPIO_ACTIVE_LOW>; + reset-assert-us = <300>; + reset-deassert-us = <6500>; }; };