From patchwork Sat Sep 3 10:30:46 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krishna Kurapati X-Patchwork-Id: 12964959 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 62E2BC6FA89 for ; Sat, 3 Sep 2022 10:31:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230416AbiICKbb (ORCPT ); Sat, 3 Sep 2022 06:31:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60256 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229583AbiICKb2 (ORCPT ); Sat, 3 Sep 2022 06:31:28 -0400 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9DED9580B9; Sat, 3 Sep 2022 03:31:27 -0700 (PDT) Received: from pps.filterd (m0279862.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 283A92t5032535; Sat, 3 Sep 2022 10:31:08 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=Gg6oKb0DsfACe1YtVXJW5LAXzeGyM6/ekStqmub8DDvdi2dNibsB55ZzxRYl/lJRyGiP avtHcYGVU3OSOI+FufUAp7BPajfeQ1zO3RhQhpRAQIiIqPQicUkcIl1yijisWyeug3Js eVUcNpa970n7FcMJJjFs4zLFpmdPKTRXnfGaK/dvfgzPiJs5klD6agsUyjLs4fWHD74E entZK8GYPJW9XIAk23qzBlLPnN/Z4hXgS+ucVCYVhmVaNq8idGNUGpLwoyFk5hoIPMT4 ZL+Q/kipVtMF7M0hbaN6tqUlhuhtfs31P6dj3Vjpn9FHy5jacaEgyTg4lbmvzN6h7Rzl /g== Received: from nalasppmta04.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3jbypmgjbm-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sat, 03 Sep 2022 10:31:08 +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 283AV75o024193 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sat, 3 Sep 2022 10:31:07 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; Sat, 3 Sep 2022 03:31:01 -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 v12 1/3] dt-bindings: phy: qcom,usb-snps-femto-v2: Add phy override params bindings Date: Sat, 3 Sep 2022 16:00:46 +0530 Message-ID: <1662201048-26049-2-git-send-email-quic_kriskura@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1662201048-26049-1-git-send-email-quic_kriskura@quicinc.com> References: <1662201048-26049-1-git-send-email-quic_kriskura@quicinc.com> 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-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: OTVvuJ8BZE1Z6cOQlBTinJCUsrV_wGZi X-Proofpoint-GUID: OTVvuJ8BZE1Z6cOQlBTinJCUsrV_wGZi X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.895,Hydra:6.0.517,FMLib:17.11.122.1 definitions=2022-09-03_03,2022-08-31_03,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 clxscore=1015 phishscore=0 spamscore=0 mlxscore=0 bulkscore=0 adultscore=0 suspectscore=0 lowpriorityscore=0 malwarescore=0 mlxlogscore=918 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2207270000 definitions=main-2209030053 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.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