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 7EB4CEB64DD for ; Thu, 3 Aug 2023 15:07:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235122AbjHCPHG (ORCPT ); Thu, 3 Aug 2023 11:07:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41174 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234973AbjHCPHG (ORCPT ); Thu, 3 Aug 2023 11:07:06 -0400 Received: from relay8-d.mail.gandi.net (relay8-d.mail.gandi.net [217.70.183.201]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D16AC106 for ; Thu, 3 Aug 2023 08:07:03 -0700 (PDT) Received: by mail.gandi.net (Postfix) with ESMTPSA id CF32A1BF206; Thu, 3 Aug 2023 15:07:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1691075222; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=eeSOfCuM7nPXnczwEeMLPCjuszwbvpLl5EQU4izcoEw=; b=YHzFZNrbcLgP8jiVYgbLHIYZ+640BDN9mNg3xklEqTI5jGFnQZai5B98r2A1gYtZFUpPz3 WRhpbFkZ/GVKpBBRy/JRg5RPzVCpHt3TbQcSJa2j1aBO3NXs3MprIbm/tUkGU9LBQHbj05 gkAcGBShZ4WeIUCw3me++GcjoZ3JPYVEwysft5mxtnazRbu6LlxRWiGVO6L7DqgaRjGyrS cn/6RM9tvCR0ToxgoJHtHNOc/yVIx+HJYLnnKZfq31MY4ouz3btImTWqo6KDZOA6nbQBpz bEvesu2oRTHKvwrzA5hLQ8/EqFfouCV6lbC/Atrfr9lSTxHp/NVbegNwuZeaLA== Date: Thu, 3 Aug 2023 17:06:59 +0200 From: Luca Ceresoli To: Marek Vasut Cc: dri-devel@lists.freedesktop.org, Neil Armstrong , Conor Dooley , devicetree@vger.kernel.org, Sam Ravnborg , Rob Herring , Thierry Reding , Krzysztof Kozlowski Subject: Re: [PATCH 2/2] drm/panel-simple: Add Innolux G156HCE-L01 panel entry Message-ID: <20230803170659.2e44e204@booty> In-Reply-To: <9b236561-36af-da7a-2caf-892be68e2b76@denx.de> References: <20230731210258.256152-1-marex@denx.de> <20230731210258.256152-2-marex@denx.de> <20230803162314.122fab64@booty> <9b236561-36af-da7a-2caf-892be68e2b76@denx.de> Organization: Bootlin X-Mailer: Claws Mail 4.0.0 (GTK+ 3.24.33; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-GND-Sasl: luca.ceresoli@bootlin.com Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Hi Marek, On Thu, 3 Aug 2023 16:25:37 +0200 Marek Vasut wrote: > On 8/3/23 16:23, Luca Ceresoli wrote: > > Hi Marek, > > Hi, > > > On Mon, 31 Jul 2023 23:02:58 +0200 > > Marek Vasut wrote: > > > >> Add support for Innolux G156HCE-L01 15.6" 1920x1080 24bpp > >> dual-link LVDS TFT panel. Documentation is available at [1]. > > > > Interesting, I'm bringing up this exact panel right now and found your > > patch. > > > >> The middle frequency is tuned slightly upward from 70.93 MHz > >> to 72 MHz, otherwise the panel shows slight flicker. > > > > Using 70.93 MHz here does not show any flickering. I even tried going > > in the opposite direction and set 70 MHz, and to use different > > backlight settings, all without any flickering. > > > > Do you think you might be using a defective device? Would you have a > > chance of testing another sample? > > I have literally one such display. > > Which SoC do you use (and if applicable, which bridge) ? The panel is driven by the DSI-2 output of a i.MX8MP through a TI SN65DSI84 bridge. Luca -- Luca Ceresoli, Bootlin Embedded Linux and Kernel engineering https://bootlin.com