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 X-Spam-Level: X-Spam-Status: No, score=-11.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 DA09FC4338F for ; Fri, 13 Aug 2021 08:20:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B4CD36109E for ; Fri, 13 Aug 2021 08:20:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239680AbhHMIUm (ORCPT ); Fri, 13 Aug 2021 04:20:42 -0400 Received: from mail.kernel.org ([198.145.29.99]:52458 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239581AbhHMIUm (ORCPT ); Fri, 13 Aug 2021 04:20:42 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 29B2960FC3; Fri, 13 Aug 2021 08:20:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1628842815; bh=R2t/HkTfw4iNuHnkpQLxoKAEyy4GosUZbPrQovzCfTM=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=Nyuqa5aQXSZ6GUZWcEcZv0Id4SVtTlXsNz9UtCd4ZlNnFf4KQEEgFX5crXQm/E1ya +6yBMTJAZZcoN9SYQjy7q4KOq1n2Mz93W7A1yOUmlYE4gr4tSFzYNDn819Ds5EjetO TZFVZBa2vnDIRfxw88FJFcMUTWRBQRzoTdvppxRM= Date: Fri, 13 Aug 2021 10:20:13 +0200 From: Greg KH To: Oliver Graute Cc: oliver.graute@gmail.com, Carlis , dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org Subject: Re: [PATCH v1] fbtft: fb_st7789v: added reset on init_display() Message-ID: References: <20210813062511.14537-1-oliver.graute@kococonnector.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210813062511.14537-1-oliver.graute@kococonnector.com> Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org On Fri, Aug 13, 2021 at 08:25:10AM +0200, Oliver Graute wrote: > staging: fbtft: fb_st7789v: reset display before initialization What is this line here, and why is this not your subject line instead? > > In rare cases the display is flipped or mirrored. This was observed more > often in a low temperature environment. A clean reset on init_display() > should help to get registers in a sane state. > > Signed-off-by: Oliver Graute What commit does this fix? thanks, greg k-h