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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B26E1C433EF for ; Mon, 25 Apr 2022 16:26:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243482AbiDYQ3Z (ORCPT ); Mon, 25 Apr 2022 12:29:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36560 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243451AbiDYQ1d (ORCPT ); Mon, 25 Apr 2022 12:27:33 -0400 Received: from mout.perfora.net (mout.perfora.net [74.208.4.196]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6576411F96E; Mon, 25 Apr 2022 09:24:28 -0700 (PDT) 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 Content-Transfer-Encoding: 8bit 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= Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.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