From patchwork Tue May 16 16:20:19 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johannes Zink X-Patchwork-Id: 683632 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 B075FC7EE2C for ; Tue, 16 May 2023 16:21:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229703AbjEPQVU (ORCPT ); Tue, 16 May 2023 12:21:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46042 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229538AbjEPQVA (ORCPT ); Tue, 16 May 2023 12:21:00 -0400 Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [IPv6:2001:67c:670:201:290:27ff:fe1d:cc33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 08882A270 for ; Tue, 16 May 2023 09:20:36 -0700 (PDT) Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1pyxPd-0002nv-Im; Tue, 16 May 2023 18:20:33 +0200 Received: from [2a0a:edc0:0:1101:1d::39] (helo=dude03.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtp (Exim 4.94.2) (envelope-from ) id 1pyxPc-000eDz-Pm; Tue, 16 May 2023 18:20:32 +0200 Received: from localhost ([::1] helo=dude03.red.stw.pengutronix.de) by dude03.red.stw.pengutronix.de with esmtp (Exim 4.94.2) (envelope-from ) id 1pyxPb-00DODy-Q4; Tue, 16 May 2023 18:20:31 +0200 From: Johannes Zink Date: Tue, 16 May 2023 18:20:19 +0200 Subject: [PATCH v2 1/2] dt-bindings: phy: imx8mq-usb: add phy tuning properties MIME-Version: 1.0 Message-Id: <20230516-lustige-usb-phy-dinge-v2-1-3383a0de34ac@pengutronix.de> References: <20230516-lustige-usb-phy-dinge-v2-0-3383a0de34ac@pengutronix.de> In-Reply-To: <20230516-lustige-usb-phy-dinge-v2-0-3383a0de34ac@pengutronix.de> To: Vinod Koul , Kishon Vijay Abraham I , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team , Li Jun Cc: patchwork-jzi@pengutronix.de, linux-phy@lists.infradead.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Johannes Zink X-Mailer: b4 0.12.2 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: j.zink@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: devicetree@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Add optional properties for tuning of usb phy. Signed-off-by: Johannes Zink --- .../bindings/phy/fsl,imx8mq-usb-phy.yaml | 47 ++++++++++++++++++++++ 1 file changed, 47 insertions(+) diff --git a/Documentation/devicetree/bindings/phy/fsl,imx8mq-usb-phy.yaml b/Documentation/devicetree/bindings/phy/fsl,imx8mq-usb-phy.yaml index e6f9f5540cc3..dc3a3f709fea 100644 --- a/Documentation/devicetree/bindings/phy/fsl,imx8mq-usb-phy.yaml +++ b/Documentation/devicetree/bindings/phy/fsl,imx8mq-usb-phy.yaml @@ -35,6 +35,53 @@ properties: description: A phandle to the regulator for USB VBUS. + fsl,phy-tx-vref-tune-percent: + description: + Tunes the HS DC level relative to the nominal level + minimum: 94 + maximum: 124 + + fsl,phy-tx-rise-tune-percent: + description: + Adjusts the rise/fall time duration of the HS waveform relative to + its nominal value + minimum: 97 + maximum: 103 + + fsl,phy-tx-preemp-amp-tune-microamp: + description: + Adjust amount of current sourced to DPn and DMn after a J-to-K + or K-to-J transition. Default is 0 (disabled). + minimum: 0 + maximum: 1800 + + fsl,phy-tx-vboost-level-microvolt: + description: + Adjust the boosted transmit launch pk-pk differential amplitude + minimum: 880 + maximum: 1120 + + fsl,phy-comp-dis-tune-percent: + description: + Adjust the voltage level used to detect a disconnect event at the host + relative to the nominal value + minimum: 91 + maximum: 115 + + fsl,phy-pcs-tx-deemph-3p5db-attenuation-db: + description: + Adjust TX de-emphasis attenuation in dB at nominal + 3.5dB point as per USB specification + $ref: /schemas/types.yaml#/definitions/uint32 + minimum: 0 + maximum: 36 + + fsl,phy-pcs-tx-swing-full-percent: + description: + Scaling of the voltage defined by fsl,phy-tx-vboost-level-microvolt + minimum: 0 + maximum: 100 + required: - compatible - reg