From patchwork Mon Jan 20 10:07:22 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin Kepplinger X-Patchwork-Id: 205531 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0BA55C2D0DB for ; Mon, 20 Jan 2020 10:08:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D0BFB207E0 for ; Mon, 20 Jan 2020 10:08:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726039AbgATKIB (ORCPT ); Mon, 20 Jan 2020 05:08:01 -0500 Received: from comms.puri.sm ([159.203.221.185]:40850 "EHLO comms.puri.sm" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726589AbgATKIB (ORCPT ); Mon, 20 Jan 2020 05:08:01 -0500 Received: from localhost (localhost [127.0.0.1]) by comms.puri.sm (Postfix) with ESMTP id 70A74DF2AA; Mon, 20 Jan 2020 02:08:00 -0800 (PST) Received: from comms.puri.sm ([127.0.0.1]) by localhost (comms.puri.sm [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 7fE69IKM7W_p; Mon, 20 Jan 2020 02:07:59 -0800 (PST) From: Martin Kepplinger To: robh@kernel.org, mark.rutland@arm.com, shawnguo@kernel.org Cc: kernel@pengutronix.de, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Martin Kepplinger Subject: [PATCH] arm64: dts: librem5-devkit: add lsm9ds1 mount matrix Date: Mon, 20 Jan 2020 11:07:22 +0100 Message-Id: <20200120100722.30359-1-martin.kepplinger@puri.sm> Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org The IMU chip on the librem5-devkit is not mounted at the "natural" place that would match normal phone orientation (see the documentation for the details about what that is). Since the lsm9ds1 driver supports providing a mount matrix, we can describe the orientation on the board in the dts: Create a right-handed coordinate system (x * -1; see the datasheet for the axis) and rotate 180 degrees around the y axis because the device sits on the back side from the display. Signed-off-by: Martin Kepplinger --- tested on the librem5-devkit of course, finally fixing the orientation problem for the accelerometer :) thanks, martin arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts index 703254282b96..6c8ab009081b 100644 --- a/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts +++ b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts @@ -457,6 +457,9 @@ reg = <0x6a>; vdd-supply = <®_3v3_p>; vddio-supply = <®_3v3_p>; + mount-matrix = "1", "0", "0", + "0", "1", "0", + "0", "0", "-1"; }; };