From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id F0EF6C433EF for ; Mon, 25 Apr 2022 16:25:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=CnuS9d++enZxOf96smGuIoYcV6DIwz6JmkuguFoEDrk=; b=x9rlPmNNcaB5rr VuMhjb8kxJX1DHAi3/hpddoTJ3ADmnhIoFQa485+ORDeIub0S9dk90ahPMnQmU3dyQanZsxSWXOaz gHuoZejWmjjFcBWiYv8j7WhEVXahcNJlcHWWH51hjkdFUICfszFPPhPPGL4kOP8Un6D1EUkGygDpF ufQtM8B5u7ZvJTAu+Tm0ckpBnlY/1GcJUVYhZi55UryA/7JI4FdeAhIY2eOSgFlqJMg1PHAQmvmpC /s2wrEK5YWMaYJz2CfbGsM40VNGsqy/Gy5wa9FnKI/BDSDhHm0BOVvd3aIa2miqahynzxcfGvt0I1 F274PPyMryoEWW0N1bGQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nj1W2-00AKxo-6K; Mon, 25 Apr 2022 16:24:46 +0000 Received: from mout.perfora.net ([74.208.4.196]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nj1Vg-00AKrR-Oo for linux-arm-kernel@lists.infradead.org; Mon, 25 Apr 2022 16:24:26 +0000 Received: from toolbox.int.toradex.com ([81.221.85.15]) by mrelay.perfora.net (mreueus002 [74.208.5.2]) with ESMTPSA (Nemesis) id 0MOPlT-1nmcPZ3bu9-005rtl; Mon, 25 Apr 2022 18:24:13 +0200 From: Marcel Ziswiler To: linux-arm-kernel@lists.infradead.org Cc: Max Krummenacher , Denys Drozdov , Marcel Ziswiler , Fabio Estevam , Frank Rowand , Krzysztof Kozlowski , NXP Linux Team , Pengutronix Kernel Team , Rob Herring , Russell King , Sascha Hauer , Shawn Guo , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 02/14] ARM: dts: imx6ull-colibri: change touch i2c parameters Date: Mon, 25 Apr 2022 18:23:44 +0200 Message-Id: <20220425162356.176665-3-marcel@ziswiler.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220425162356.176665-1-marcel@ziswiler.com> References: <20220425162356.176665-1-marcel@ziswiler.com> MIME-Version: 1.0 X-Provags-ID: V03:K1:ADHj/TGDKswkLg5a89IKMUfylJ4N+jPV7Tu6xHT0qRHr/R0TXFx yXx2j7uUeU9/KFV0gw/rpjK+HhW2pOmGnpqLnNnzZ8dM1jQjEhSOrNvQlqBcpUYC7dVz+Lg XBmJ3MCtQphX2Xl0VSu5ecnivlqEFScqIt52yZAUZlJOl5/J5rDCCidWN9sz/CJjiqYYuQx /kZapW8bgFwpgGX6trR1A== X-UI-Out-Filterresults: notjunk:1;V03:K0:BYdktJvC4Zg=:mtLyBkNgwc/nC3nHd9KkWh FtcoQDWnTUQZzvK3zLPlaEM/G+e8ikGFTFVERlJnl6dIwAxrUTRqGQHVYmfM8EMa/r9kB+5/8 kkU1IjcmJtAaTBj0yNsHMraF8E1JSEZpgXx04grgxQA6CfRkFDfRLJaeaVwWfeqQHN2afFeYS vxAyXLK9Nk68jFvENjQQjkQ4JxW0nimcXxJLUa6Sog4W92eTCPcW/qW4RFsTAn9Li74b5ccxR Im82qS51lkvValY3WGzG++U8Mh7Xf7YcVlihFEtTdUfmQtlaJjtIzLxELjoj62jn6wVxoZY1E kxKwS6rPCyvxb6jkFn2Qbo/en/RuThoDIkRdYP+AfM7DAXdNY+wEMn+g+0yN93hBz+eVD5fdJ lkbGCmzHqMMegMpbJHn/PG6EuYt/eJB569tzcbeEWuzRQ+OqT5S0u5Mnl+zOlDwLEwfwsK+Ny 9qiqr3AVHaRZIpKDz963M/rXWdT27rJxeBS4IRWzOS9Jz217+zIEX9XxPXT4EmLcv9UcLgVL8 3Gb8HQtaMKGZP+jN2YXG5DQs1aHwx3RQGbCcNWZ+NY9h3YFsjUF/JkfOiTKoJAWRQpNAlrRQX 8gwIi5PS416hsWXXmdeSv59VYW6Ejw6VjB7Gr209FBfgTGP8tqJYtfuD2SRX9TIy9g3ntGl2G /o1WD0FK/BH7V0Ahu6WJGJmJ3tc4YFTa+egK7Aoens9QzcUFWiW09XIRZsigxsTiiLzQ= X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220425_092424_914351_BDEE619A X-CRM114-Status: UNSURE ( 8.59 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Max Krummenacher Switch on 22 kOhm pull-ups and lower the I2C frequency to around 40 kHz to get more reliable communication. Signed-off-by: Max Krummenacher Signed-off-by: Denys Drozdov Signed-off-by: Marcel Ziswiler --- (no changes since v1) arch/arm/boot/dts/imx6ull-colibri.dtsi | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/arch/arm/boot/dts/imx6ull-colibri.dtsi b/arch/arm/boot/dts/imx6ull-colibri.dtsi index eb13ed60d2e4..bea00cfaa820 100644 --- a/arch/arm/boot/dts/imx6ull-colibri.dtsi +++ b/arch/arm/boot/dts/imx6ull-colibri.dtsi @@ -114,6 +114,8 @@ &i2c1 { }; &i2c2 { + /* Use low frequency to compensate for the high pull-up values. */ + clock-frequency = <40000>; pinctrl-names = "default", "gpio"; pinctrl-0 = <&pinctrl_i2c2>; pinctrl-1 = <&pinctrl_i2c2_gpio>; @@ -405,15 +407,15 @@ MX6UL_PAD_UART4_RX_DATA__GPIO1_IO29 0x4001b8b0 /* SODIMM 194 */ pinctrl_i2c2: i2c2-grp { fsl,pins = < - MX6UL_PAD_UART5_TX_DATA__I2C2_SCL 0x4001b8b0 - MX6UL_PAD_UART5_RX_DATA__I2C2_SDA 0x4001b8b0 + MX6UL_PAD_UART5_TX_DATA__I2C2_SCL 0x4001f8b0 + MX6UL_PAD_UART5_RX_DATA__I2C2_SDA 0x4001f8b0 >; }; pinctrl_i2c2_gpio: i2c2-gpio-grp { fsl,pins = < - MX6UL_PAD_UART5_TX_DATA__GPIO1_IO30 0x4001b8b0 - MX6UL_PAD_UART5_RX_DATA__GPIO1_IO31 0x4001b8b0 + MX6UL_PAD_UART5_TX_DATA__GPIO1_IO30 0x4001f8b0 + MX6UL_PAD_UART5_RX_DATA__GPIO1_IO31 0x4001f8b0 >; }; -- 2.35.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel