From patchwork Tue Sep 1 10:48:09 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Griffin X-Patchwork-Id: 31184 Received: from mail.tu-berlin.de ([130.149.7.33]) by www.linuxtv.org with esmtp (Exim 4.72) (envelope-from ) id 1ZWj7D-0005gB-0f; Tue, 01 Sep 2015 12:48:35 +0200 X-tubIT-Incoming-IP: 209.132.180.67 Received: from vger.kernel.org ([209.132.180.67]) by mail.tu-berlin.de (exim-4.76/mailfrontend-6) with esmtp id 1ZWj7A-0006oc-5n; Tue, 01 Sep 2015 12:48:34 +0200 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755429AbbIAKs3 (ORCPT + 1 other); Tue, 1 Sep 2015 06:48:29 -0400 Received: from mail-wi0-f177.google.com ([209.85.212.177]:38217 "EHLO mail-wi0-f177.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755414AbbIAKsW (ORCPT ); Tue, 1 Sep 2015 06:48:22 -0400 Received: by wiclp12 with SMTP id lp12so26090221wic.1 for ; Tue, 01 Sep 2015 03:48:21 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=TZoDqxoTqkdDweIkD6S4Eu6IbUvApO9kM6UFbAYDecU=; b=PcYIMZO/Zh/2ibVnhcaDmnp86dQwMzOpuV+dtvtqApwOysONRTjBojze9VWmiqiTMn Gjdk9tAM3SOkSNp94vNukTHPJ6JEnOamSiqifhwHgmHJXLzZaw+Re8stJWU94OcDjH+q N+XQeEMDTChgk6siyh/M/4iPJFR2qF+L4Tv7aZoYPJIuzGN2stbWZ0B5p8bVZqk7neMU lOD6VPR3OtGGCzDsxD3q4IT4HKD0tmQLRHfHPwJ1tL+5he2/FwGn3FiTNm08PyXlBvKS 8iaNZfg/ltLq4SGzE5LxnD8LlJP0AlmlImv22GbgaAqpWLgmk85xuigFd60Q5hoh0Ys0 kZKQ== X-Gm-Message-State: ALoCoQl7nfmHqEo0DwoZgHrJ9s/YrxqR4BLJGFkEU3LOTUkcQ0cjWaRKe4UyKlohxOXzeT+Kobuk X-Received: by 10.181.11.134 with SMTP id ei6mr2605389wid.83.1441104501581; Tue, 01 Sep 2015 03:48:21 -0700 (PDT) Received: from localhost.localdomain (cpc14-aztw22-2-0-cust189.18-1.cable.virginm.net. [82.45.1.190]) by smtp.gmail.com with ESMTPSA id gt10sm2093822wib.20.2015.09.01.03.48.20 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 01 Sep 2015 03:48:20 -0700 (PDT) From: Peter Griffin To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, srinivas.kandagatla@gmail.com, maxime.coquelin@st.com, patrice.chotard@st.com, mchehab@osg.samsung.com Cc: peter.griffin@linaro.org, lee.jones@linaro.org, linux-media@vger.kernel.org, devicetree@vger.kernel.org, valentinrothberg@gmail.com, hugues.fruchet@st.com Subject: [PATCH v4 1/6] ARM: DT: STi: stihxxx-b2120: Add pulse-width properties to ssc2 & ssc3 Date: Tue, 1 Sep 2015 11:48:09 +0100 Message-Id: <1441104494-10468-2-git-send-email-peter.griffin@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1441104494-10468-1-git-send-email-peter.griffin@linaro.org> References: <1441104494-10468-1-git-send-email-peter.griffin@linaro.org> Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-PMX-Version: 6.0.0.2142326, Antispam-Engine: 2.7.2.2107409, Antispam-Data: 2015.9.1.104216 X-PMX-Spam: Gauge=IIIIIIII, Probability=8%, Report=' MULTIPLE_RCPTS 0.1, HTML_00_01 0.05, HTML_00_10 0.05, BODYTEXTP_SIZE_3000_LESS 0, BODY_SIZE_1100_1199 0, BODY_SIZE_2000_LESS 0, BODY_SIZE_5000_LESS 0, BODY_SIZE_7000_LESS 0, NO_URI_HTTPS 0, REFERENCES 0, SINGLE_URI_IN_BODY 0, URI_ENDS_IN_HTML 0, __ANY_URI 0, __CP_URI_IN_BODY 0, __HAS_FROM 0, __HAS_MSGID 0, __HAS_X_MAILER 0, __HAS_X_MAILING_LIST 0, __IN_REP_TO 0, __MIME_TEXT_ONLY 0, __MULTIPLE_RCPTS_CC_X2 0, __MULTIPLE_RCPTS_TO_X5 0, __REFERENCES 0, __SANE_MSGID 0, __SINGLE_URI_TEXT 0, __SUBJ_ALPHA_END 0, __TO_MALFORMED_2 0, __TO_NO_NAME 0, __URI_IN_BODY 0, __URI_NO_WWW 0, __URI_NS , __YOUTUBE_RCVD 0' Adding these properties makes the I2C bus to the demodulators much more reliable, and we no longer suffer from I2C errors when tuning. Signed-off-by: Peter Griffin Acked-by: Lee Jones --- arch/arm/boot/dts/stihxxx-b2120.dtsi | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/arch/arm/boot/dts/stihxxx-b2120.dtsi b/arch/arm/boot/dts/stihxxx-b2120.dtsi index f589fe4..62994ae 100644 --- a/arch/arm/boot/dts/stihxxx-b2120.dtsi +++ b/arch/arm/boot/dts/stihxxx-b2120.dtsi @@ -27,12 +27,18 @@ }; }; - i2c@9842000 { + ssc2: i2c@9842000 { status = "okay"; + clock-frequency = <100000>; + st,i2c-min-scl-pulse-width-us = <0>; + st,i2c-min-sda-pulse-width-us = <5>; }; - i2c@9843000 { + ssc3: i2c@9843000 { status = "okay"; + clock-frequency = <100000>; + st,i2c-min-scl-pulse-width-us = <0>; + st,i2c-min-sda-pulse-width-us = <5>; }; i2c@9844000 {