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 98C33C433F5 for ; Thu, 14 Apr 2022 08:53:07 +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=whJ8fuwhPJ+tsYIm8DHSBY5lXU9zXdUAzfPNW+u9C/Q=; b=xa6QR3fxglIjur 9fG7j5FKsa/QkTL3VXBR/xJTI/VTALdoupito8C2oAn+78u2aSo04g3d1B0qRpOCy2huoDiX2ImuD pKV1DQ9p7SueI/b2g7rOQxAzeDFERoW1qEAhAV5vLi4s0sm7sM7GOZpCVo/e9oPI4vdeJmUS530I/ VemZ9QKq/Gz9Hof3/XXHDyNAUbOgkR+3BIb8H0FhcjG5EocpaY8KpvsWSak6X8W+NxYeocxnoR8OQ L01ZO0/x1RHI3hoTjVP/ONbzPG3hDWTg3j0PPJo8jdN+zk07hhYt1c5Gq+y9zfkcOONgqbB4wfowV fAYD94YgfODiRM3jBhFA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nevCs-004e5s-4X; Thu, 14 Apr 2022 08:52:02 +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 1nevCT-004dsr-Jx for linux-arm-kernel@lists.infradead.org; Thu, 14 Apr 2022 08:51:40 +0000 Received: from toolbox.toradex.int ([31.10.206.124]) by mrelay.perfora.net (mreueus004 [74.208.5.2]) with ESMTPSA (Nemesis) id 1M2Ohe-1nfUEQ2XEs-003sXi; Thu, 14 Apr 2022 10:51:29 +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 v1 03/14] ARM: dts: imx6ull-colibri: change touch i2c parameters Date: Thu, 14 Apr 2022 10:50:55 +0200 Message-Id: <20220414085106.18621-4-marcel@ziswiler.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220414085106.18621-1-marcel@ziswiler.com> References: <20220414085106.18621-1-marcel@ziswiler.com> MIME-Version: 1.0 X-Provags-ID: V03:K1:PrUdRr7lJNylNQs5YAAtcSHGAf2AuFsk+QjxxQZnL4oYz5aYOLt MZw9gTowkY7xk4JAjeKBP6H6CTRvujCq7XExmd+mfHeakqXeVvB+VHt88r3Bxy4zV+qSH7v lBH5jcHNVSqOoFYfN/2rrETdBJOEOzs3qL6qjTGr6K426OiKgWr0EuLU4uiPc+fsrOJ++o8 Jmiw07EyrwlLznwJ7Ufeg== X-UI-Out-Filterresults: notjunk:1;V03:K0:VxVvqScpZWE=:UpENukvdF5ohWHmHhlqcdk fEHKd1197hG+IBTjH3QfG5rQY1rvYhL6a4ERrwANwh9sufmhFtyRvFoKlKgzgYadiFA2Pwl44 9PfDuhetHnBXzYldhUHl6CyUZoyg+00toAIrp2l+J7CSShAQDY1uLPfVexQobhDI2g4hrRgbA guOm2vQfk1LwPnCTsQhEzuWzI81GBXc8FhMXmNg1J+5JUrgmSsVZoNwdTyi5cLlQHQA7tkn+M VEULd/Eb9jvaLcuKA2eBf/PnIRqNFmG5cH05HHV8noHsqalhaHxGzE1wNI3/uO7k+1jzGPcua cKF+i5TlRgs222mZyqOms5vBVQK9P3UL+pUlpt/OwmqJwPV+bwOB50dsoGqWAF34PokjchrBp 92ao28asbYBE2pd7qJ12Hg0F73pRmY7kMYGJk9eYcuiD3Deua4lId8XAPk/paYTesi02KiGbO /i5efA+n8Gk7pyA1yT6Wfhf4IMDn7SYXiOOdSbpgAQckOEGESP8RJvds9EBI7ho2lETRmPmPu 7vxbYFVYfGm1NQO98OH7AUmbteLeY6lv3pNNpWr/F59cTcr7F8Kt7ksDYx23rK0ZA5KLOUsnQ RKnc3W2cyx/z7AJrCLjvs60d+lsvm3wddripzcJ+wVCX+RlLiibw2CQND+1Aixz9uTQtTDiHr AsYvjf3z0ag4/19UjgdwHDBU5DJRJtxxIPGc/Q8KMl2wIBwH/mpjUUMELEQ1kFR8FjCo= X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220414_015137_824500_EF920A0C X-CRM114-Status: UNSURE ( 8.25 ) 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 --- 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