From patchwork Mon Jan 20 11:39:00 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vince Bridgers X-Patchwork-Id: 312511 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 723912C0092 for ; Mon, 20 Jan 2014 22:44:12 +1100 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751709AbaATLoI (ORCPT ); Mon, 20 Jan 2014 06:44:08 -0500 Received: from mail-pd0-f176.google.com ([209.85.192.176]:38195 "EHLO mail-pd0-f176.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750822AbaATLoG (ORCPT ); Mon, 20 Jan 2014 06:44:06 -0500 Received: by mail-pd0-f176.google.com with SMTP id w10so1493732pde.35 for ; Mon, 20 Jan 2014 03:44:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=6jdKRzU3Z1uOBmvSJLlNYXlMZpuxg83BH73KaLm4vy8=; b=bYeyqbuzRzanNPjH86oN7BjsQir5T54Scm/Qx0VNXoxizTcTLMfFNfdMkVlnSDXr7L h5zNu4VLH3KiqGUQik0tDfVcDJRupzHOKKN2ygYUGeuLZsJp/oF0fBjp8znZfanypYtJ h5XJ+Ril/W0+ImvoECdYgqYXL/5Lben3VJP8V1VnwK/nk1/pSDW7Gnw25mN2c+5vaKEy f4c5zDWpmYY3DdlGC7mz8SOuiw6ksC2CNUN2vjJdy8l1ByKBL/o+oqAyvcUFqvDSDsTS WUgv0WvzUopy4OVMY+kmokbmcfpF2gjMmEW7xtKix1gAO3qICaMUMM3kLbS+/UXiPZB8 /yiA== X-Received: by 10.66.66.234 with SMTP id i10mr7682895pat.127.1390218245924; Mon, 20 Jan 2014 03:44:05 -0800 (PST) Received: from vince-Latitude-E6320.altera.com ([12.249.100.218]) by mx.google.com with ESMTPSA id qp15sm2461332pbb.2.2014.01.20.03.44.02 for (version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Mon, 20 Jan 2014 03:44:04 -0800 (PST) From: Vince Bridgers To: devicetree@vger.kernel.org, netdev@vger.kernel.org Cc: peppe.cavallaro@st.com, robh+dt@kernel.org, pawel.moll@arm.com, mark.rutland@arm.com, ijc+devicetree@hellion.org.uk, galak@codeaurora.org, dinguyen@altera.com, rayagond@vayavyalabs.com, vbridgers2013@gmail.com Subject: [PATCH net-next v6 1/2] dts: Add a binding for Synopsys emac max-frame-size Date: Mon, 20 Jan 2014 05:39:00 -0600 Message-Id: <1390217941-22967-2-git-send-email-vbridgers2013@gmail.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1390217941-22967-1-git-send-email-vbridgers2013@gmail.com> References: <1390217941-22967-1-git-send-email-vbridgers2013@gmail.com> Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org This change adds a parameter for the Synopsys 10/100/1000 stmmac Ethernet driver to configure the maximum frame size supported by the EMAC driver. Synopsys allows the FIFO sizes to be configured when the cores are built for a particular device, but do not provide a way for the driver to read information from the device about the maximum MTU size supported as limited by the device's FIFO size. Signed-off-by: Vince Bridgers --- V6: respin for updated net-next V5: simplify comment on use of max-frame-size V4: add comments to explain use of max-frame-size with respect to inconsistent definition and use in the ePAPR v1.1 spec V3: change snps,max-frame-size to max-frame-size V2: change snps,max-mtu to snps,max-frame-size --- Documentation/devicetree/bindings/net/stmmac.txt | 3 +++ 1 file changed, 3 insertions(+) diff --git a/Documentation/devicetree/bindings/net/stmmac.txt b/Documentation/devicetree/bindings/net/stmmac.txt index aefb639..9d92d42 100644 --- a/Documentation/devicetree/bindings/net/stmmac.txt +++ b/Documentation/devicetree/bindings/net/stmmac.txt @@ -32,6 +32,8 @@ Optional properties: - resets: Should contain a phandle to the STMMAC reset signal, if any - reset-names: Should contain the reset signal name "stmmaceth", if a reset phandle is given +- max-frame-size: Maximum Transfer Unit (IEEE defined MTU), rather + than the maximum frame size. Examples: @@ -42,5 +44,6 @@ Examples: interrupts = <24 23>; interrupt-names = "macirq", "eth_wake_irq"; mac-address = [000000000000]; /* Filled in by U-Boot */ + max-frame-size = <3800>; phy-mode = "gmii"; };