From patchwork Tue May 31 16:14:50 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krishna Kurapati X-Patchwork-Id: 12865927 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 13F66C433FE for ; Tue, 31 May 2022 16:15:14 +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=jVjDL7Li2MBtLscz69I6C6gOHIUOA1tYYk458W8Fo3E=; b=2i6KccFhmIYqLP uPlI1JeaQmf7FEYBCfr4677cQF90epFRpFpT11XFazPI+kOmPBHIVZE8tpgvVCo//UVi5hV4rGa8Y M4KVsEQksBUsJZ/9uouP7VlIt04y6pBsisPP+cMhEAfaIlcUSldXCHbaD0+YVOrMPZvYGtezh/lAq 4uHu2/RJvA+MO0ZC2oYeRPDK6HSWBAM7TLrJ2h4Gej2k7fMKdwTYr15evEwzMd80DXddFQ6anRUSr z/0dwFbytQ1VQ5/G9+QrhUqFiXutUECVzbcpuFl3RHMlyMPiiYlnj2xmsLyYv8RlrxNf6vpY3TiD2 9dLuq739YGpvQSAdsmqg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nw4WX-00Bjqi-Do; Tue, 31 May 2022 16:15:13 +0000 Received: from alexa-out.qualcomm.com ([129.46.98.28]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nw4WU-00BjpX-Ls for linux-phy@lists.infradead.org; Tue, 31 May 2022 16:15:12 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1654013711; x=1685549711; h=from:to:cc:subject:date:message-id:mime-version; bh=Edb7o5x82G2kwmy8SarSHg+LzOe4KThZlTxdJSXY1Ww=; b=aXBPCmyHWbBDdmV0WPMLwM/RJGOOFVWqsjfTpPDzJpAFe0oIWf/JIXn3 gRXdq7rZeseHSCGe1Ym/jGEmUHRKf7vi6eZbb+p19ZrsbHHDwmk2UvxbI IoMj/qwYlsk+QqxlB+EtmDmmCd8WnXpo/NbiBCNMIjxpQQBg+CT75J2x9 A=; Received: from ironmsg09-lv.qualcomm.com ([10.47.202.153]) by alexa-out.qualcomm.com with ESMTP; 31 May 2022 09:15:06 -0700 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg09-lv.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 31 May 2022 09:15:05 -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; Tue, 31 May 2022 09:15:04 -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; Tue, 31 May 2022 09:14:58 -0700 From: Krishna Kurapati To: Krzysztof Kozlowski , Rob Herring , Andy Gross , Bjorn Andersson , Greg Kroah-Hartman , Stephen Boyd , "Doug Anderson" , Matthias Kaehlcke , Wesley Cheng CC: , , , , , , , , Krishna Kurapati Subject: [PATCH v7 0/3] Add QCOM SNPS PHY overriding params support Date: Tue, 31 May 2022 21:44:50 +0530 Message-ID: <1654013693-21484-1-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: nasanex01b.na.qualcomm.com (10.46.141.250) 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-20220531_091510_793019_5A541143 X-CRM114-Status: UNSURE ( 9.80 ) 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 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 | 96 ++++++++ arch/arm64/boot/dts/qcom/sc7280-idp.dtsi | 6 + drivers/phy/qualcomm/phy-qcom-snps-femto-v2.c | 268 ++++++++++++++++++++- 3 files changed, 368 insertions(+), 2 deletions(-)