Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752109AbcCKK6Q (ORCPT ); Fri, 11 Mar 2016 05:58:16 -0500 Received: from mail-pa0-f67.google.com ([209.85.220.67]:36812 "EHLO mail-pa0-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751046AbcCKK6D (ORCPT ); Fri, 11 Mar 2016 05:58:03 -0500 From: Caesar Wang To: Heiko Stuebner , "David S. Miller" , Rob Herring Cc: linux-rockchip@lists.infradead.org, keescook@google.com, leozwang@google.com, Caesar Wang , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/6] net: arc_emac: add phy-reset-* are optional for device tree Date: Fri, 11 Mar 2016 18:55:27 +0800 Message-Id: <1457693731-6966-3-git-send-email-wxt@rock-chips.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1457693731-6966-1-git-send-email-wxt@rock-chips.com> References: <1457693731-6966-1-git-send-email-wxt@rock-chips.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1820 Lines: 46 This patch adds the following property for arc_emac. 1) phy-reset-gpios: The phy-reset-gpios is an optional property for arc emac device tree boot. Change the binding document to match the driver code. 2) phy-reset-duration: Different boards may require different phy reset duration. Add property phy-reset-duration for device tree probe, so that the boards that need a longer reset duration can specify it in their device tree. 3) phy-reset-active-high: We need that for a custom hardware that needs the reverse reset sequence. Anyway, we can add the above property for arc emac. Signed-off-by: Caesar Wang --- Documentation/devicetree/bindings/net/arc_emac.txt | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/Documentation/devicetree/bindings/net/arc_emac.txt b/Documentation/devicetree/bindings/net/arc_emac.txt index a1d71eb..6389b00 100644 --- a/Documentation/devicetree/bindings/net/arc_emac.txt +++ b/Documentation/devicetree/bindings/net/arc_emac.txt @@ -7,6 +7,16 @@ Required properties: - max-speed: see ethernet.txt file in the same directory. - phy: see ethernet.txt file in the same directory. +Optional properties: +- phy-reset-gpios : Should specify the gpio for phy reset +- phy-reset-duration : Reset duration in milliseconds. Should present + only if property "phy-reset-gpios" is available. Missing the property + will have the duration be 1 millisecond. Numbers greater than 1000 are + invalid and 1 millisecond will be used instead. +- phy-reset-active-high : If present then the reset sequence using the GPIO + specified in the "phy-reset-gpios" property is reversed (H=reset state, + L=operation state). + Clock handling: The clock frequency is needed to calculate and set polling period of EMAC. It must be provided by one of: -- 1.9.1