From patchwork Thu Oct 6 05:13:52 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mugunthan V N X-Patchwork-Id: 9363655 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 8FE55608A7 for ; Thu, 6 Oct 2016 05:16:18 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8440A28DE3 for ; Thu, 6 Oct 2016 05:16:18 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 7277B28DE8; Thu, 6 Oct 2016 05:16:18 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0731028DE5 for ; Thu, 6 Oct 2016 05:16:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752187AbcJFFOu (ORCPT ); Thu, 6 Oct 2016 01:14:50 -0400 Received: from comal.ext.ti.com ([198.47.26.152]:50791 "EHLO comal.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751722AbcJFFOt (ORCPT ); Thu, 6 Oct 2016 01:14:49 -0400 Received: from dflxv15.itg.ti.com ([128.247.5.124]) by comal.ext.ti.com (8.13.7/8.13.7) with ESMTP id u965E8Ds024144; Thu, 6 Oct 2016 00:14:08 -0500 Received: from DFLE72.ent.ti.com (dfle72.ent.ti.com [128.247.5.109]) by dflxv15.itg.ti.com (8.14.3/8.13.8) with ESMTP id u965E7Qt015464; Thu, 6 Oct 2016 00:14:07 -0500 Received: from dflp33.itg.ti.com (10.64.6.16) by DFLE72.ent.ti.com (128.247.5.109) with Microsoft SMTP Server id 14.3.294.0; Thu, 6 Oct 2016 00:14:06 -0500 Received: from a0131834lt.india.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by dflp33.itg.ti.com (8.14.3/8.13.8) with ESMTP id u965Du3K018682; Thu, 6 Oct 2016 00:14:02 -0500 From: Mugunthan V N To: CC: , , , , Rob Herring , Mark Rutland , Tony Lindgren , Russell King , Florian Fainelli , David Miller , Sekhar Nori , Mugunthan V N Subject: [PATCH v3 1/4] net: phy: dp83867: Add documentation for optional impedance control Date: Thu, 6 Oct 2016 10:43:52 +0530 Message-ID: <20161006051355.15947-2-mugunthanvnm@ti.com> X-Mailer: git-send-email 2.10.0.372.g6fe1b14 In-Reply-To: <20161006051355.15947-1-mugunthanvnm@ti.com> References: <20161006051355.15947-1-mugunthanvnm@ti.com> MIME-Version: 1.0 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add documention of ti,impedance-control which can be used to correct MAC impedance mismatch using phy extended registers. Signed-off-by: Mugunthan V N --- Documentation/devicetree/bindings/net/ti,dp83867.txt | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/Documentation/devicetree/bindings/net/ti,dp83867.txt b/Documentation/devicetree/bindings/net/ti,dp83867.txt index 5d21141..85bf945 100644 --- a/Documentation/devicetree/bindings/net/ti,dp83867.txt +++ b/Documentation/devicetree/bindings/net/ti,dp83867.txt @@ -9,6 +9,18 @@ Required properties: - ti,fifo-depth - Transmitt FIFO depth- see dt-bindings/net/ti-dp83867.h for applicable values +Optional property: + - ti,min-output-impedance - MAC Interface Impedance control to set + the programmable output impedance to + minimum value (35 ohms). + - ti,max-output-impedance - MAC Interface Impedance control to set + the programmable output impedance to + maximum value (70 ohms). + +Note: ti,min-output-impedance and ti,max-output-impedance are mutually + exclusive. When both properties are present ti,max-output-impedance + takes precedence. + Default child nodes are standard Ethernet PHY device nodes as described in Documentation/devicetree/bindings/net/phy.txt