From patchwork Tue Sep 6 16:15:31 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krishna Kurapati X-Patchwork-Id: 12967800 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 C10F5C6FA83 for ; Tue, 6 Sep 2022 16:40:53 +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:References:In-Reply-To: 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: List-Owner; bh=OKxaEae8aVp5/a6dTIySXltbpNZLUWGV5+UoxnejXak=; b=2SRBKPgzmgvm+U TGz7vrGMzacUFYIA/6teDBQIIKXHLtqovZa6ZywbQdeXSMIDHZsKdviaBrDEKyVf9IQPinx21Qiyk Z9gJm5b8Nk/GNajU8kdAZeG63JxZ3bc4OPcCGHPXxcNZaYTBt2fOBI2S+5JG/F4o2Ma+XPBG7PRYt Mu+VsjyD2b72GmnlJed2yiBIUN5rQ3nuV58Mv4JW8tN3ZjaiIZfYainez6uPS9UnRwFxnAZ07LxUv 3CuBXmAid+n4rRrPsTDX5sNx721TdDm8ICNSBNzGeMc85Be79U/92/NkZ1OOIN9sRBZosJkefD703 QM766jG6HfLEvtNO/l8w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oVbd6-00FVny-Mq; Tue, 06 Sep 2022 16:40:52 +0000 Received: from mx0b-0031df01.pphosted.com ([205.220.180.131]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1oVbFF-00FHr7-32 for linux-phy@lists.infradead.org; Tue, 06 Sep 2022 16:16:15 +0000 Received: from pps.filterd (m0279873.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 286AnPfv020936; Tue, 6 Sep 2022 16:16:02 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=qcppdkim1; bh=Q9sYSqYSgS5qH4/v1WiCPBXj8mZyzbwietEuvjrJlWA=; b=WhG+5qqKGPLWpkAEVS3Ogf4e0Ck2th+3Wt5c77dm47KN4w7gQbz7I7FqWgzTCTI0N9wh +SHwcqyUXOECjFMO9lSFWzLP+XaBIvIrovNFf8B7s5AdIgddg8L+dtvr5Sp1UkBF3nUD tL6/s37KWdUmZ7pQp6v1sai3FPlwYzQuShZYJ2yJfZioOGKA9gNY68rdv/c/+/UDB+yE v79lbS9Rb/LP2dUPmCfSIqW2A2l1lOPXC+dUtM08ap6tDUNTZ7yy4G8Osr6OR1ofyc1p tyMfRLzcoMiBdXrCuz+uBrbWx7HcWotU7zAaGpPAa5/KePZad/0Y2vcT9nmapIa7I1pG vA== Received: from nalasppmta04.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3jdtw9b1ms-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 06 Sep 2022 16:15:52 +0000 Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA04.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 286GFpqI009371 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 6 Sep 2022 16:15:51 GMT 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 15.2.986.29; Tue, 6 Sep 2022 09:15:44 -0700 From: Krishna Kurapati To: Krzysztof Kozlowski , Rob Herring , Andy Gross , Bjorn Andersson , Vinod Koul , Wesley Cheng , Konrad Dybcio , Kishon Vijay Abraham I , Philipp Zabel , Greg Kroah-Hartman , Stephen Boyd , Doug Anderson CC: , , , , , , , , Sandeep Maheswaram , Krishna Kurapati Subject: [PATCH v13 1/3] dt-bindings: phy: qcom,usb-snps-femto-v2: Add phy override params bindings Date: Tue, 6 Sep 2022 21:45:31 +0530 Message-ID: <1662480933-12326-2-git-send-email-quic_kriskura@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1662480933-12326-1-git-send-email-quic_kriskura@quicinc.com> References: <1662480933-12326-1-git-send-email-quic_kriskura@quicinc.com> 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-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: L-2MhGu5H7CwgBrVZ3SzCF7qxpOSoGOc X-Proofpoint-ORIG-GUID: L-2MhGu5H7CwgBrVZ3SzCF7qxpOSoGOc X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.895,Hydra:6.0.528,FMLib:17.11.122.1 definitions=2022-09-06_08,2022-09-06_02,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 impostorscore=0 suspectscore=0 phishscore=0 mlxlogscore=933 mlxscore=0 clxscore=1015 malwarescore=0 bulkscore=0 adultscore=0 priorityscore=1501 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2207270000 definitions=main-2209060075 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220906_091613_330270_FFF56CE4 X-CRM114-Status: GOOD ( 18.74 ) 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 From: Sandeep Maheswaram Add device tree bindings for SNPS phy tuning parameters. Signed-off-by: Sandeep Maheswaram Signed-off-by: Krishna Kurapati Reviewed-by: Krzysztof Kozlowski --- .../bindings/phy/qcom,usb-snps-femto-v2.yaml | 88 ++++++++++++++++++++++ 1 file changed, 88 insertions(+) diff --git a/Documentation/devicetree/bindings/phy/qcom,usb-snps-femto-v2.yaml b/Documentation/devicetree/bindings/phy/qcom,usb-snps-femto-v2.yaml index f2aeffd..68e7096 100644 --- a/Documentation/devicetree/bindings/phy/qcom,usb-snps-femto-v2.yaml +++ b/Documentation/devicetree/bindings/phy/qcom,usb-snps-femto-v2.yaml @@ -54,6 +54,94 @@ properties: vdda33-supply: description: phandle to the regulator 3.3V supply node. + qcom,hs-disconnect-bp: + description: + This adjusts the voltage level for the threshold used to + detect a disconnect event at the host. + The hardware accepts only discrete values. The value closest to the + provided input will be chosen as the override value for this param. + minimum: -272 + maximum: 2156 + + qcom,squelch-detector-bp: + description: + This adjusts the voltage level for the threshold used to + detect valid high-speed data. + The hardware accepts only discrete values. The value closest to the + provided input will be chosen as the override value for this param. + minimum: -2090 + maximum: 1590 + + qcom,hs-amplitude-bp: + description: + This adjusts the high-speed DC level voltage. + The hardware accepts only discrete values. The value closest to the + provided input will be chosen as the override value for this param. + minimum: -660 + maximum: 2670 + + qcom,pre-emphasis-duration-bp: + description: + This signal controls the duration for which the + HS pre-emphasis current is sourced onto DP<#> or DM<#>. + The HS Transmitter pre-emphasis duration is defined in terms of + unit amounts. One unit of pre-emphasis duration is approximately + 650 ps and is defined as 1X pre-emphasis duration. + The hardware accepts only discrete values. The value closest to the + provided input will be chosen as the override value for this param. + minimum: 10000 + maximum: 20000 + + qcom,pre-emphasis-amplitude-bp: + description: + This signal controls the amount of current sourced to + DP<#> and DM<#> after a J-to-K or K-to-J transition. + The HS Transmitter pre-emphasis current is defined in terms of unit + amounts. One unit amount is approximately 2 mA and is defined as + 1X pre-emphasis current. + The hardware accepts only discrete values. The value closest to the + provided input will be chosen as the override value for this param. + minimum: 10000 + maximum: 40000 + + qcom,hs-rise-fall-time-bp: + description: + This adjusts the rise/fall times of the high-speed waveform. + The hardware accepts only discrete values. The value closest to the + provided input will be chosen as the override value for this param. + minimum: -4100 + maximum: 5430 + + qcom,hs-crossover-voltage-microvolt: + description: + This adjusts the voltage at which the DP<#> and DM<#> + signals cross while transmitting in HS mode. + The hardware accepts only discrete values. The value closest to the + provided input will be chosen as the override value for this param. + minimum: -31000 + maximum: 28000 + + qcom,hs-output-impedance-micro-ohms: + description: + In some applications, there can be significant series resistance + on the D+ and D- paths between the transceiver and cable. This adjusts + the driver source impedance to compensate for added series + resistance on the USB. The hardware accepts only discrete values. The + value closest to the provided input will be chosen as the override value + for this param. + minimum: -2300000 + maximum: 6100000 + + qcom,ls-fs-output-impedance-bp: + description: + This adjusts the low- and full-speed single-ended source + impedance while driving high. The following adjustment values are based + on nominal process, voltage, and temperature. + The hardware accepts only discrete values. The value closest to the + provided input will be chosen as the override value for this param. + minimum: -1053 + maximum: 1310 + required: - compatible - reg