From patchwork Sun Jul 3 13:13:46 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krishna Kurapati X-Patchwork-Id: 12904339 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id F1FFBC433EF for ; Sun, 3 Jul 2022 13:14:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:CC :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=I3iHqEQaBSODzl5T+Y4sQ7nf+UIxXEeTsLjZLsKI+/w=; b=dZCiEUpzToP/nv VzAsxwBx+xBcyTdfZdMk1prZcqbv32ER4FzIbCBOiJGxqBEV8l9qNdkdJRnHXPMX66xsSGk6QQwOH uHrRdnW1KS3sKgIKxKOQzDbiGLadrGaQXsnZs2J1ySMrxWY/CKusBC6uw79JPqDcsnEfPGMcXs0se 1Qk1PSjdsPtS7XtiJrBQTLM/C7GpZHpwESsTVz6f1g+b18ungDCZrMmOtKODeJWhEjoeDpt+jMM49 USsk2hVBe2ism3jjur5OddEQ1BnYNhAQrcWS1woTlt147fk1mhjvJSwT43+ny+K9E4wiSwKGW6QEA zB+PU4eGk+jBS5yiEbiQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1o7zQS-00G79r-5A; Sun, 03 Jul 2022 13:14:12 +0000 Received: from alexa-out-sd-02.qualcomm.com ([199.106.114.39]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1o7zQM-00G74V-OW for linux-phy@lists.infradead.org; Sun, 03 Jul 2022 13:14:10 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1656854046; x=1688390046; h=from:to:cc:subject:date:message-id:mime-version; bh=+OFl9ft1IWqWLt94vWf4QdHJhq1ZG+iZPdu0a4H+RrU=; b=Dd531A4qw3s/pZV0Wa4WWw5PfhQoYM55/514vAPh96ljbpYrlHPOq9Iz w//k/l2hekraSPxKZxYB4XnPoLyBEzeh1z5j6QddbvnRGMeTcS4nElwsW XM8gk0mppwO9zR7fotixt2tHfalRwD5cSxqUkQPzdLmYb+nWXHTzBA+tu U=; Received: from unknown (HELO ironmsg01-sd.qualcomm.com) ([10.53.140.141]) by alexa-out-sd-02.qualcomm.com with ESMTP; 03 Jul 2022 06:14:01 -0700 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg01-sd.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Jul 2022 06:14:00 -0700 Received: from nalasex01a.na.qualcomm.com (10.47.209.196) by nasanex01c.na.qualcomm.com (10.47.97.222) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.22; Sun, 3 Jul 2022 06:14:00 -0700 Received: from hu-kriskura-hyd.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.22; Sun, 3 Jul 2022 06:13:54 -0700 From: Krishna Kurapati To: Krzysztof Kozlowski , Rob Herring , Andy Gross , Bjorn Andersson , Greg Kroah-Hartman , Stephen Boyd , "Doug Anderson" , Matthias Kaehlcke , Vinod Koul , Wesley Cheng CC: , , , , , , , , Krishna Kurapati Subject: [PATCH v10 0/3] Add QCOM SNPS PHY overriding params support Date: Sun, 3 Jul 2022 18:43:46 +0530 Message-ID: <1656854029-21660-1-git-send-email-quic_kriskura@quicinc.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01a.na.qualcomm.com (10.47.209.196) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220703_061406_892175_44A3181E X-CRM114-Status: UNSURE ( 9.10 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org Added support for overriding tuning parameters in QCOM SNPS PHY from device tree. This parameter tuning is required to tune the hs signal on dp/dm lines for electrical compliance to be successful. Changes in v10: Fixed patch headers. changes in v9: Fixed nitpick in driver code. changes in v8: Fixed nitpick in driver code. changes in v7: Fixed nitpick in driver code and dtsi file. changes in v6: Fixed errors in dt-bindings. Fixed nitpick in driver code. changes in v5: Fixed nitpicks in code. Added minimum and maximum for each parameter added in dt-bindings. Added proper suffixes to each parameter as per dtschema. changes in v4: Fixed nitpicks in code. Initial compliance test results showed overshoot in the middle of eye diagram. The current dt values were put in place to correct it and fix overshoot issue. changes in v3: Added support for phy tuning parameters to be represented in bps and corresponding register values to be written are obtained by traversing through data map declared in the driver. changes in v2: Reading the individual fields in each overriding register from device tree. Krishna Kurapati (2): phy: qcom-snps: Add support for overriding phy tuning parameters arm64: dts: qcom: sc7280: Update SNPS Phy params for SC7280 IDP device Sandeep Maheswaram (1): dt-bindings: phy: qcom,usb-snps-femto-v2: Add phy override params bindings .../bindings/phy/qcom,usb-snps-femto-v2.yaml | 88 +++++++ arch/arm64/boot/dts/qcom/sc7280-idp.dtsi | 6 + drivers/phy/qualcomm/phy-qcom-snps-femto-v2.c | 260 ++++++++++++++++++++- 3 files changed, 352 insertions(+), 2 deletions(-)