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 X-Spam-Level: X-Spam-Status: No, score=-11.6 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CB649C433E0 for ; Mon, 13 Jul 2020 08:31:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 992102068F for ; Mon, 13 Jul 2020 08:31:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1594629096; bh=FsFblUdL5K5d2aFPvTZlzHuZddUIieZMqtgdM3CU/po=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=0ar1kkMvn++OTY54GPxgBnCyApE231rFXtXZ7C5+6jWlumtIJb9Orr+k4xTySnAPl IdMw3rJCW+hZIQl1WAdjdysu4RtlyQAMcaLHt3qctXT0TuUqSBfjIfv58j9j2DPofZ OJLudIdo1THfnch2mKL3I8nNXT38N0qLsZkSB8V8= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726077AbgGMIbg (ORCPT ); Mon, 13 Jul 2020 04:31:36 -0400 Received: from mail.kernel.org ([198.145.29.99]:33866 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725818AbgGMIbg (ORCPT ); Mon, 13 Jul 2020 04:31:36 -0400 Received: from dragon (80.251.214.228.16clouds.com [80.251.214.228]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id C60362067D; Mon, 13 Jul 2020 08:31:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1594629095; bh=FsFblUdL5K5d2aFPvTZlzHuZddUIieZMqtgdM3CU/po=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=VcssKVuD/CLz2ppkMgV25dtCwaGPQkvDDD9harM49EQqHQvivUa34cBlj8IDVJ/Ho sU1wTda0feaoQJeFygOzSTeihQeZlxc/jhopd0UmnZ65o/TMOmkIeYKXRjo2VlPrVX kk+JMXngbaqfitIeLMrjLrEZ7PY3B6VIFuCGqIMw= Date: Mon, 13 Jul 2020 16:31:30 +0800 From: Shawn Guo To: Peter Chen Cc: robh+dt@kernel.org, linux-arm-kernel@lists.infradead.org, kernel@pengutronix.de, devicetree@vger.kernel.org, fabio.estevam@nxp.com, linux-imx@nxp.com, linux-usb@vger.kernel.org, jun.li@nxp.com Subject: Re: [PATCH 1/4] doc: dt-binding: ci-hdrc-usb2: add property for imx picophy Message-ID: <20200713083129.GC15718@dragon> References: <20200709105902.23165-1-peter.chen@nxp.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200709105902.23165-1-peter.chen@nxp.com> User-Agent: Mutt/1.9.4 (2018-02-28) Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On Thu, Jul 09, 2020 at 06:58:59PM +0800, Peter Chen wrote: > Add two parameters which are used to tune USB signal for imx picophy, > picophy is used at imx7d, imx8mm, and imx8mn. > > Reviewed-by: Jun Li > Signed-off-by: Peter Chen > --- > Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt > index 51376cbe5f3d..e9858dafb08f 100644 > --- a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt > +++ b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt > @@ -100,6 +100,13 @@ i.mx specific properties > It's recommended to specify the over current polarity. > - power-active-high: power signal polarity is active high > - external-vbus-divider: enables off-chip resistor divider for Vbus > +- picophy,pre-emp-curr-control: HS Transmitter Pre-Emphasis Current 'picophy' should be documented in vendor-prefixes.yaml? Shawn > + Control. This signal controls the amount of current sourced to the > + USB_OTG*_DP and USB_OTG*_DN pins after a J-to-K or K-to-J transition. > + Details can refer to TXPREEMPAMPTUNE0 bits of USBNC_n_PHY_CFG1. > +- picophy,dc-vol-level-adjust: HS DC Voltage Level Adjustment. > + Adjust the high-speed transmitter DC level voltage, details can refer > + to TXVREFTUNE0 bits of USBNC_n_PHY_CFG1. > > Example: > > -- > 2.17.1 >