From patchwork Wed May 11 15:26:31 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krishna Kurapati X-Patchwork-Id: 12846363 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 8531FC433F5 for ; Wed, 11 May 2022 15:26:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1343685AbiEKP0z (ORCPT ); Wed, 11 May 2022 11:26:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55248 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1343644AbiEKP0y (ORCPT ); Wed, 11 May 2022 11:26:54 -0400 Received: from alexa-out.qualcomm.com (alexa-out.qualcomm.com [129.46.98.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 80373377D2; Wed, 11 May 2022 08:26:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1652282813; x=1683818813; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=DmCggzxlBlEElILwccMo5iy8HH+CtovGy9o1uqA+ZRQ=; b=ihByjAJKQigeM+yFpe6xujZvFmgS9Ch11O3lYobW7iU//kF0VXWri9UA EtP2mKCseuHBorK90qN9dB+jgDt7nLtwCCcou52ZbZEjHyE/uG6mCBka4 JHrEhA28bm6ZKtxSRaGYnw3QtPCe84ehA1NVAN7SOayoVCxuWlnBRw9eN A=; Received: from ironmsg09-lv.qualcomm.com ([10.47.202.153]) by alexa-out.qualcomm.com with ESMTP; 11 May 2022 08:26:52 -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; 11 May 2022 08:26:51 -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; Wed, 11 May 2022 08:26:51 -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; Wed, 11 May 2022 08:26:45 -0700 From: Krishna Kurapati To: Krzysztof Kozlowski , Rob Herring , Andy Gross , Bjorn Andersson , Greg Kroah-Hartman , Stephen Boyd , "Doug Anderson" , Matthias Kaehlcke , Wesley Cheng , Vinod Koul CC: , , , , , , , , Sandeep Maheswaram , Krishna Kurapati Subject: [v4 1/3] dt-bindings: phy: qcom,usb-snps-femto-v2: Add phy override params bindings Date: Wed, 11 May 2022 20:56:31 +0530 Message-ID: <1652282793-5580-2-git-send-email-quic_kriskura@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1652282793-5580-1-git-send-email-quic_kriskura@quicinc.com> References: <1652282793-5580-1-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 | 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..70efffe 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-disconnect-bps: + $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. + + qcom,squelch-detector-bps: + $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. + + qcom,hs-amplitude-bps: + $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. + + qcom,pre-emphasis-duration-bps: + $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. + + qcom,pre-emphasis-amplitude-bps: + $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. + + 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-mv: + $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-mohm: + $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. + + qcom,ls-fs-output-impedance-bps: + $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. + required: - compatible - reg