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: 10805743 X-Patchwork-Delegate: geert@linux-m68k.org Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4D0A113B4 for ; Mon, 11 Feb 2019 13:25:23 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3AFA62A469 for ; Mon, 11 Feb 2019 13:25:23 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 2CE242A4A7; Mon, 11 Feb 2019 13:25:23 +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=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, 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 7DE942A469 for ; Mon, 11 Feb 2019 13:25:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727639AbfBKNZW (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-renesas-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP 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.