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08 May 2022 19:53:08 -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, 8 May 2022 19:53:08 -0700 Received: from hu-pkondeti-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, 8 May 2022 19:53:02 -0700 Date: Mon, 9 May 2022 08:22:58 +0530 From: Pavan Kondeti To: Krishna Kurapati CC: Krzysztof Kozlowski , Rob Herring , Andy Gross , Bjorn Andersson , Greg Kroah-Hartman , Stephen Boyd , "Doug Anderson" , Matthias Kaehlcke , Wesley Cheng , , , , , , , , , Sandeep Maheswaram Subject: Re: [v3 1/3] dt-bindings: phy: qcom,usb-snps-femto-v2: Add phy override params bindings Message-ID: <20220509025258.GH4640@hu-pkondeti-hyd.qualcomm.com> References: <1652011947-18575-1-git-send-email-quic_kriskura@quicinc.com> <1652011947-18575-2-git-send-email-quic_kriskura@quicinc.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <1652011947-18575-2-git-send-email-quic_kriskura@quicinc.com> User-Agent: Mutt/1.5.24 (2015-08-30) 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-20220508_195314_717036_D44D76F7 X-CRM114-Status: GOOD ( 17.37 ) 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org Hi Krishna, On Sun, May 08, 2022 at 05:42:25PM +0530, Krishna Kurapati wrote: > From: Sandeep Maheswaram > > Add device tree bindings for SNPS phy tuning parameters. > > Signed-off-by: Sandeep Maheswaram > Signed-off-by: Krishna Kurapati > --- > .../bindings/phy/qcom,usb-snps-femto-v2.yaml | 87 ++++++++++++++++++++++ > 1 file changed, 87 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 1ce251d..6c2ecdd 100644 > --- a/Documentation/devicetree/bindings/phy/qcom,usb-snps-femto-v2.yaml > +++ b/Documentation/devicetree/bindings/phy/qcom,usb-snps-femto-v2.yaml > @@ -53,6 +53,93 @@ properties: > vdda33-supply: > description: phandle to the regulator 3.3V supply node. > > + > + qcom,hs-rise-fall-time-bps: > + $ref: /schemas/types.yaml#/definitions/int32 > + description: > + This adjusts the rise/fall times of the high-speed waveform. > + The values defined are in multiples of basis points (1bp = 0.01%). > + The hardware accepts only discrete values. The value closest to the > + provided input will be chosen as the override value for this param. > + > + qcom,hs-crossover-voltage: > + $ref: /schemas/types.yaml#/definitions/int32 > + description: > + This adjusts the voltage at which the DP<#> and DM<#> > + signals cross while transmitting in HS mode. > + The values defined are in milli volts. The hardware accepts only > + discrete values. The value closest to the provided input will be > + chosen as the override value for this param. > + > + qcom,hs-output-impedance: > + $ref: /schemas/types.yaml#/definitions/int32 > + 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 values defined are in milliohms. %s/milliohms/mill ohms > + The hardware accepts only discrete values. The value closest to the > + provided input will be chosen as the override value for this param. > + What are the units for HS crossover voltage and output impedence? can you add units as a suffix like other parameters? Thanks, Pavan -- linux-phy mailing list linux-phy@lists.infradead.org https://lists.infradead.org/mailman/listinfo/linux-phy From mboxrd@z Thu Jan 1 00:00:00 1970 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 A8FCCC433F5 for ; Mon, 9 May 2022 02:56:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229379AbiEIC7V (ORCPT ); Sun, 8 May 2022 22:59:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34060 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232184AbiEIC5B (ORCPT ); Sun, 8 May 2022 22:57:01 -0400 Received: from alexa-out-sd-01.qualcomm.com (alexa-out-sd-01.qualcomm.com [199.106.114.38]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EFF65719D2; Sun, 8 May 2022 19:53:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1652064790; x=1683600790; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=6Wxg3fLn0A0xQwJ99WIYxTRHGTymqsdyy7BxyjO6OG8=; b=u7gbwZ18aTHEIMnAzO1A9IP81w/TiS4bPRJpPAP+mjRPgJ4szV04+NYt 7SfBfVg5QdeIWmNc0xOpdA1MTtTSyowkRw+OWTV1rZ0LFI8X40kw7Hct0 Fkd+w6tsldqBIlByHunsbnXh42n8SriH4jWvptuIZAYO1xLBrpCk7bTqE w=; Received: from unknown (HELO ironmsg05-sd.qualcomm.com) ([10.53.140.145]) by alexa-out-sd-01.qualcomm.com with ESMTP; 08 May 2022 19:53:09 -0700 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg05-sd.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 May 2022 19:53:08 -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, 8 May 2022 19:53:08 -0700 Received: from hu-pkondeti-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, 8 May 2022 19:53:02 -0700 Date: Mon, 9 May 2022 08:22:58 +0530 From: Pavan Kondeti To: Krishna Kurapati CC: Krzysztof Kozlowski , Rob Herring , Andy Gross , Bjorn Andersson , Greg Kroah-Hartman , Stephen Boyd , "Doug Anderson" , Matthias Kaehlcke , Wesley Cheng , , , , , , , , , Sandeep Maheswaram Subject: Re: [v3 1/3] dt-bindings: phy: qcom,usb-snps-femto-v2: Add phy override params bindings Message-ID: <20220509025258.GH4640@hu-pkondeti-hyd.qualcomm.com> References: <1652011947-18575-1-git-send-email-quic_kriskura@quicinc.com> <1652011947-18575-2-git-send-email-quic_kriskura@quicinc.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <1652011947-18575-2-git-send-email-quic_kriskura@quicinc.com> User-Agent: Mutt/1.5.24 (2015-08-30) 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) Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Hi Krishna, On Sun, May 08, 2022 at 05:42:25PM +0530, Krishna Kurapati wrote: > From: Sandeep Maheswaram > > Add device tree bindings for SNPS phy tuning parameters. > > Signed-off-by: Sandeep Maheswaram > Signed-off-by: Krishna Kurapati > --- > .../bindings/phy/qcom,usb-snps-femto-v2.yaml | 87 ++++++++++++++++++++++ > 1 file changed, 87 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 1ce251d..6c2ecdd 100644 > --- a/Documentation/devicetree/bindings/phy/qcom,usb-snps-femto-v2.yaml > +++ b/Documentation/devicetree/bindings/phy/qcom,usb-snps-femto-v2.yaml > @@ -53,6 +53,93 @@ properties: > vdda33-supply: > description: phandle to the regulator 3.3V supply node. > > + > + qcom,hs-rise-fall-time-bps: > + $ref: /schemas/types.yaml#/definitions/int32 > + description: > + This adjusts the rise/fall times of the high-speed waveform. > + The values defined are in multiples of basis points (1bp = 0.01%). > + The hardware accepts only discrete values. The value closest to the > + provided input will be chosen as the override value for this param. > + > + qcom,hs-crossover-voltage: > + $ref: /schemas/types.yaml#/definitions/int32 > + description: > + This adjusts the voltage at which the DP<#> and DM<#> > + signals cross while transmitting in HS mode. > + The values defined are in milli volts. The hardware accepts only > + discrete values. The value closest to the provided input will be > + chosen as the override value for this param. > + > + qcom,hs-output-impedance: > + $ref: /schemas/types.yaml#/definitions/int32 > + 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 values defined are in milliohms. %s/milliohms/mill ohms > + The hardware accepts only discrete values. The value closest to the > + provided input will be chosen as the override value for this param. > + What are the units for HS crossover voltage and output impedence? can you add units as a suffix like other parameters? Thanks, Pavan