From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754623AbcGTO6D (ORCPT ); Wed, 20 Jul 2016 10:58:03 -0400 Received: from comal.ext.ti.com ([198.47.26.152]:60444 "EHLO comal.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754509AbcGTO5S (ORCPT ); Wed, 20 Jul 2016 10:57:18 -0400 From: Mugunthan V N To: CC: Rob Herring , Mark Rutland , Tony Lindgren , Russell King , Florian Fainelli , "David S . Miller" , Sekhar Nori , , , , , Mugunthan V N Subject: [net-next PATCH 1/3] net: phy: dp83867: Add documentation for optional impedance control Date: Wed, 20 Jul 2016 20:26:12 +0530 Message-ID: <20160720145614.13132-2-mugunthanvnm@ti.com> X-Mailer: git-send-email 2.9.2.368.g08bb350 In-Reply-To: <20160720145614.13132-1-mugunthanvnm@ti.com> References: <20160720145614.13132-1-mugunthanvnm@ti.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/Documentation/devicetree/bindings/net/ti,dp83867.txt b/Documentation/devicetree/bindings/net/ti,dp83867.txt index 5d21141..531ea3c5 100644 --- a/Documentation/devicetree/bindings/net/ti,dp83867.txt +++ b/Documentation/devicetree/bindings/net/ti,dp83867.txt @@ -9,6 +9,13 @@ Required properties: - ti,fifo-depth - Transmitt FIFO depth- see dt-bindings/net/ti-dp83867.h for applicable values +Optional property: + - ti,impedance-control - MAC Interface Impedance control to vary the + output impedance with an approximate range + from 35-70 ohms in 32 steps. Value range can + be 0x0 to 0x1f. Lowest impedance value is + 0x1f and highest impedance being 0x0. + Default child nodes are standard Ethernet PHY device nodes as described in Documentation/devicetree/bindings/net/phy.txt -- 2.9.2.368.g08bb350