From patchwork Mon May 16 17:50:08 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krishna Kurapati X-Patchwork-Id: 573217 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 9A3F0C433FE for ; Mon, 16 May 2022 17:50:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344402AbiEPRue (ORCPT ); Mon, 16 May 2022 13:50:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38710 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344391AbiEPRua (ORCPT ); Mon, 16 May 2022 13:50:30 -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 9B4BC37ABD; Mon, 16 May 2022 10:50:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1652723429; x=1684259429; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=ROpZX7KpgpNHLp58m88YI8mxh2bPxNN+kCfSysxEp8s=; b=cQvcs/WwiG7ePwzIlnke2RzmuwVynvdb69PcJ86jyXeuFsmiOyj51Gx3 PE8KGvKrV7mU0HIOOoZnf3Wfoyf/rQ8ILFXbklhY53hMW4NWeaBrTJRqY PkMPL77fzIQ181vXRzEHANPj0QsB6bhDRQPSebeSdE3gHbbTdFQj88fjA 0=; Received: from unknown (HELO ironmsg01-sd.qualcomm.com) ([10.53.140.141]) by alexa-out-sd-01.qualcomm.com with ESMTP; 16 May 2022 10:50:28 -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; 16 May 2022 10:50:27 -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; Mon, 16 May 2022 10:50:27 -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; Mon, 16 May 2022 10:50:21 -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: , , , , , , , , Sandeep Maheswaram , Krishna Kurapati Subject: [v5 1/3] dt-bindings: phy: qcom,usb-snps-femto-v2: Add phy override params bindings Date: Mon, 16 May 2022 23:20:08 +0530 Message-ID: <1652723410-1630-2-git-send-email-quic_kriskura@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1652723410-1630-1-git-send-email-quic_kriskura@quicinc.com> References: <1652723410-1630-1-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) 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 --- .../bindings/phy/qcom,usb-snps-femto-v2.yaml | 105 +++++++++++++++++++++ 1 file changed, 105 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..0a78db7 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 +53,111 @@ properties: vdda33-supply: description: phandle to the regulator 3.3V supply node. + qcom,hs-disconnect-bp: + $ref: /schemas/types.yaml#/definitions/int32 + description: + This adjusts the voltage level for the threshold used to + detect a disconnect event at the host. Possible values are. + 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. + minimum: -272 + maximum: 2156 + + qcom,squelch-detector-bp: + $ref: /schemas/types.yaml#/definitions/int32 + description: + This adjusts the voltage level for the threshold used to + detect valid high-speed data. + 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. + minimum: -2090 + maximum: 1590 + + qcom,hs-amplitude-bp: + $ref: /schemas/types.yaml#/definitions/int32 + description: + This adjusts the high-speed DC level voltage. + 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. + minimum: -660 + maximum: 2670 + + qcom,pre-emphasis-duration-bp: + $ref: /schemas/types.yaml#/definitions/int32 + 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 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. + minimum: 10000 + maximum: 20000 + + qcom,pre-emphasis-amplitude-bp: + $ref: /schemas/types.yaml#/definitions/int32 + 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 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. + minimum: 10000 + maximum: 40000 + + qcom,hs-rise-fall-time-bp: + $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. + minimim: -4100 + maximum: 5430 + + qcom,hs-crossover-voltage-microvolt: + $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. + minimum: -31000 + maximum: 28000 + + qcom,hs-output-impedance-micro-ohm: + $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 milli ohms. + 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: + $ref: /schemas/types.yaml#/definitions/int32 + 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 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. + minimum: -1053 + maximum: 1310 + required: - compatible - reg