From patchwork Thu Mar 3 06:13:29 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sandeep Maheswaram X-Patchwork-Id: 12767074 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 52AEDC433FE for ; Thu, 3 Mar 2022 06:14:04 +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=V+JFSrwxMgqp+56sHpKSpGCDeHKdtU99Ppxld2zb8Kg=; b=oz6HHkWuB2IeAb LwJeS1zVbPA42TrBdP8awOZEJvUF/JYq8t5JDthx7bh8gkR5mTqypBV3egN5+236pijMh3meoZ5mi s609ZNcfwbGjyjYOCBHULwj6gQJq8lEbaXmJA1olKJ/YA00dxParz1YraNkF7hYYCELQNdWmPGOID QPX1H9za8gooS9K9oLzXe2p/mIQUb1BrIaMad/UL/dt78ahpe2yB4dcj8O0HuyI4WNYxHt+jgATju Pzxr9NpYkDaxCOHdn+tlBfS8nfe4UuAp8aXQTOFIc4f5iCDqEmeFQLhVDqBF29k7DU1/4tR48yGHV CG0vVky7wtJIfhArV5lA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nPeix-005Izy-PA; Thu, 03 Mar 2022 06:14:03 +0000 Received: from alexa-out-sd-01.qualcomm.com ([199.106.114.38]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nPeiu-005Iwn-SF for linux-phy@lists.infradead.org; Thu, 03 Mar 2022 06:14:02 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1646288040; x=1677824040; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=zyPTvh1c8RPn8sc5rNOcCfJp4uV5whVdkZZ2y239PwE=; b=t8NDtG3HoBLf7Y2UNQ0jRKkZAFyB3BqmCemx3M8Ovy3HLM8owHgCMv+6 f8E/wfa6isWbX5KKgkyTOYWv61rOMI7SrPEQ05ZLM+iheeucuGOTzDpJW c88Pr0t0Ph2kgU9yDIiKk7n9506Dtzh8R/bVfJNpTlN4j0uh2AT1C1VY1 M=; Received: from unknown (HELO ironmsg-SD-alpha.qualcomm.com) ([10.53.140.30]) by alexa-out-sd-01.qualcomm.com with ESMTP; 02 Mar 2022 22:13:56 -0800 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg-SD-alpha.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Mar 2022 22:13:56 -0800 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 15.2.986.15; Wed, 2 Mar 2022 22:13:55 -0800 Received: from c-sanm-linux.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 15.2.986.15; Wed, 2 Mar 2022 22:13:50 -0800 From: Sandeep Maheswaram To: Rob Herring , Andy Gross , "Bjorn Andersson" , Kishon Vijay Abraham I , Vinod Koul , Greg Kroah-Hartman , Wesley Cheng , "Stephen Boyd" , Doug Anderson , "Matthias Kaehlcke" , Krzysztof Kozlowski CC: , , , , , , , Sandeep Maheswaram Subject: [PATCH v2 1/3] dt-bindings: phy: qcom, usb-snps-femto-v2: Add phy override params bindings Date: Thu, 3 Mar 2022 11:43:29 +0530 Message-ID: <1646288011-32242-2-git-send-email-quic_c_sanm@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1646288011-32242-1-git-send-email-quic_c_sanm@quicinc.com> References: <1646288011-32242-1-git-send-email-quic_c_sanm@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-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220302_221400_974166_5522B5B2 X-CRM114-Status: GOOD ( 13.40 ) 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 Add device tree bindings for SNPS phy tuning parameters. Signed-off-by: Sandeep Maheswaram --- .../bindings/phy/qcom,usb-snps-femto-v2.yaml | 125 +++++++++++++++++++++ 1 file changed, 125 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 0dfe691..227c097 100644 --- a/Documentation/devicetree/bindings/phy/qcom,usb-snps-femto-v2.yaml +++ b/Documentation/devicetree/bindings/phy/qcom,usb-snps-femto-v2.yaml @@ -50,6 +50,131 @@ properties: vdda33-supply: description: phandle to the regulator 3.3V supply node. + qcom,hs-disconnect: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + This adjusts the voltage level for the threshold used to + detect a disconnect event at the host. Possible values are. + 7 -> +21.56% + 6 -> +17.43% + 5 -> +13.32% + 4 -> +9.73% + 3 -> +6.3 + 2 -> +3.17% + 1 -> 0, Design default% + 0 -> -2.72% + + qcom,squelch-detector: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + This adjusts the voltage level for the threshold used to + detect valid high-speed data. Possible values are + 7-> -20.90% + 6-> -15.60% + 5-> -10.30% + 4-> -5.30% + 3-> 0, Design default% + 2-> +5.30% + 1-> +10.60% + 0-> +15.90% + + qcom,hs-amplitude: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + This adjusts the high-speed DC level voltage. + Possible values are + 15-> +26.70% + 14-> +24.30% + 13-> +22.20% + 12-> +20.00% + 11-> +17.80% + 10-> +15.60% + 9-> +13.30% + 8-> +11.10% + 7-> +8.90% + 6-> +6.50% + 5-> +4.40% + 4-> +2.30% + 3-> 0, Design default% + 2-> -2.20% + 1-> -4.40% + 0-> -6.60% + + qcom,pre-emphasis-duration: + $ref: /schemas/types.yaml#/definitions/uint32 + 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. + Possible values are + 1-> 1x, short pre-emphasis current duration + 0-> 2x, long pre-emphasis current duration + + qcom,pre-emphasis-amplitude: + $ref: /schemas/types.yaml#/definitions/uint32 + 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. + Possible values are + 3-> HS Transmitter pre-emphasis circuit sources 3x pre-emphasis + current. + 2-> (design default) HS Transmitter pre-emphasis circuit sources 2x + pre-emphasis current. + 1-> HS Transmitter pre-emphasis circuit sources 1x pre-emphasis + current. + 0-> HS Transmitter pre-emphasis circuit sources 4x pre-emphasis + current. + + qcom,hs-rise-fall-time: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + This adjusts the rise/fall times of the high-speed waveform. + Possible values are + 3-> -41.0% + 2-> 0, Design default + 1-> +28.1 + 0-> +54.3% + + qcom,hs-crossover-voltage: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + This adjusts the voltage at which the DP<#> and DM<#> + signals cross while transmitting in HS mode. + Possible values are + 3-> 0, Default setting + 2-> +28 mV + 1-> -31 mV + 0-> Reserved + + qcom,hs-output-impedance: + $ref: /schemas/types.yaml#/definitions/uint32 + 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. + 3-> Source impedance is decreased by approximately 2.3 ohms + 2-> 0, Design default + 1-> Source impedance is increased by approximately 2.6 ohms + 0-> Source impedance is increased by approximately 6.1 ohms + + qcom,ls-fs-output-impedance: + $ref: /schemas/types.yaml#/definitions/uint32 + 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. + 15-> -10.53% + 7-> -5.57% + 3-> 0, Design default + 1-> +6.12% + 0-> +13.10% + required: - compatible - reg