From patchwork Mon Feb 11 13:25:15 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wolfram Sang X-Patchwork-Id: 1039812 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-i2c-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=sang-engineering.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 43ymkC0rtsz9sML for ; Tue, 12 Feb 2019 00:25:22 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727621AbfBKNZW (ORCPT ); Mon, 11 Feb 2019 08:25:22 -0500 Received: from sauhun.de ([88.99.104.3]:54608 "EHLO pokefinder.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727482AbfBKNZW (ORCPT ); Mon, 11 Feb 2019 08:25:22 -0500 Received: from localhost (p54B333B4.dip0.t-ipconnect.de [84.179.51.180]) by pokefinder.org (Postfix) with ESMTPSA id 560E52E3551; Mon, 11 Feb 2019 14:25:20 +0100 (CET) From: Wolfram Sang To: linux-i2c@vger.kernel.org Cc: linux-renesas-soc@vger.kernel.org, Andy Shevchenko , Alexandre Belloni , Ludovic Desroches , Wolfram Sang Subject: [PATCH] i2c: document the SDA hold time binding Date: Mon, 11 Feb 2019 14:25:15 +0100 Message-Id: <20190211132515.24163-1-wsa+renesas@sang-engineering.com> X-Mailer: git-send-email 2.11.0 Sender: linux-i2c-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-i2c@vger.kernel.org The documentation was forgotten when the feature was added. Fixes: 4717be73c284 ("i2c: core: Parse SDA hold time from firmware") Signed-off-by: Wolfram Sang --- To everyone on CC: I want to confirm here that you use the value really for t(hd:sta) and not t(hd:dat). I'd be a little confused otherwise... Documentation/devicetree/bindings/i2c/i2c.txt | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/Documentation/devicetree/bindings/i2c/i2c.txt b/Documentation/devicetree/bindings/i2c/i2c.txt index 44efafdfd7f5..b7bc4c4cc2e6 100644 --- a/Documentation/devicetree/bindings/i2c/i2c.txt +++ b/Documentation/devicetree/bindings/i2c/i2c.txt @@ -55,6 +55,10 @@ wants to support one of the below features, it should adapt the bindings below. Number of nanoseconds the SDA signal takes to fall; t(f) in the I2C specification. +- i2c-sda-hold-time-ns + Number of nanoseconds the SDA signal needs to be held; t(hd:sta) in + the I2C specification. + - interrupts interrupts used by the device.