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 F2784C433FE for ; Fri, 6 May 2022 13:25:56 +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=I2bcMG4Ihkaq1Z11A+g1zLZDMiEeAIngX5T2OiSDqWU=; b=I3z2IJFx2cswLL 85DjhOqQdvBIXPpJmWfeg1HVIvCb4RaSwgBy10riW42yHYiJ3Cy9bhShswrmmmNE2GioKZNJmvA5w rYf0U5x63bPIKNkDT/LqwwcdxhaLwBz+Ae9Itis2Wp9EcgEDgpgZlmGfMdDKBmi+WXvsTr2egvEie 5HC2DLvTnei4WzMzoC2B/ceyezMDAkC55Mf/ziEj0ayRikfxQLGUeded6iPNISMwGLZkKDhzqWQbz 1NfrCqppr14RCXqbp6MzAiGe+j8NnOBlOTgmx3XNxl2plKBBgSQAVGbUti7vXnraKjCxpq+CIE9pm 1jo35KwMxXMZECVd4LpQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nmxwu-003Qer-L3; Fri, 06 May 2022 13:24:48 +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 1nmxwq-003Qbp-Dj for linux-arm-kernel@lists.infradead.org; Fri, 06 May 2022 13:24:46 +0000 Received: from toolbox.int.toradex.com ([81.221.85.15]) by mrelay.perfora.net (mreueus003 [74.208.5.2]) with ESMTPSA (Nemesis) id 0MQPne-1nNiP60Wzc-00TlRH; Fri, 06 May 2022 15:24:32 +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 v3 02/13] ARM: dts: imx6ull-colibri: change touch i2c parameters Date: Fri, 6 May 2022 15:24:05 +0200 Message-Id: <20220506132416.273965-3-marcel@ziswiler.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220506132416.273965-1-marcel@ziswiler.com> References: <20220506132416.273965-1-marcel@ziswiler.com> MIME-Version: 1.0 X-Provags-ID: V03:K1:NglH/itG/phwz6Aw3Z4/JVnrTYv8/PuNhHZ8qeCtohqdIXjDyjT IXT2ee0yiOtX+G9p8BjW6C/9YPPrNKJHBI9Td6mKXCH9snmrdhctTyxXJsHtmUIcevmIxqo KjWku2O3whwH9P/c67ROKAQylx/QLHwjbb4lGuoGIFYZwXlaTkLe+vVG2F3q0qQ/7CNfrrr KPkBhYaBoI3yT7r+LPcRw== X-UI-Out-Filterresults: notjunk:1;V03:K0:1VxgiRBNDP0=:g3Ba5THtk/zXQP/xbUkU9+ ErgHYf4mFEJxeYPMBVpSJckNwZteB/FQ/zv0iLf8xWXTCzSMYw+ulAyfcJMR5YmPY9lCf1Bm6 CcIHOw5lxEUjtVK91llvgXkBG5HUxJTNKf0mka/qDyuVMq56agZE4S+qLbFXHWRsSUU9xgKZV lXG2SFrW5+KEiMieap0bvArsPCkyz8Y9JVJIwqzqLjcMGH2eWpYZaP4DXwr0I9P4Yvb3n36iz 9jvoyyFeh8BpbQpwThRLRKqm8wLJOdbf7Hjv8+hvmZW+8DbdZiVvym1oGzXrfWVhL5QrcCan4 SBx+K5Ccin7nU4wKdtPs2QzYQWd2ZjvIw/qXl9RbfhVWX5Pfq0BN5D+sSNcclum7fDzZrDj6i 4tEV+4qTIrniwwZ4i+AZdz0VuQ/6aZIyXyiT2Epp0JelgMZia9AZ9YAz2qN/ZQIyV5Jj+f+Vs OC+g7h43/vSX6TYj2l+zenkiH2cL/qhVnR81lvbMEbXo1iNBLtTlrf0viNyy/J/y43ZTDwJKy /mj2FJ1/Q0amHj3r5Qth9eHAYmnkoTBMFON4Ba/+gxVXXolYx5+2bTIqtQyOklzqf35uSIPee 51s/KaG6xEcFT4B3uyl67+paplKgZ3cVBn+ILuU059cPeG6gRZneOc1XUM/UVCF5A9l1Gb9L+ ADXglGsDIIJl4CL2IdTgP3cDQQXrHuNxSNxiKfWn/3lSepvZJj8NQ3r2XlgEJEKQvVJE= X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220506_062444_607762_6820CEDE X-CRM114-Status: UNSURE ( 8.01 ) 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 84bb7574d211..dc947035495b 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