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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 9F6E1C41621 for ; Tue, 24 Mar 2020 17:01:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 74D71206F6 for ; Tue, 24 Mar 2020 17:01:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727581AbgCXRBP (ORCPT ); Tue, 24 Mar 2020 13:01:15 -0400 Received: from muru.com ([72.249.23.125]:33112 "EHLO muru.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727314AbgCXRBP (ORCPT ); Tue, 24 Mar 2020 13:01:15 -0400 Received: from atomide.com (localhost [127.0.0.1]) by muru.com (Postfix) with ESMTPS id CE63E81CA; Tue, 24 Mar 2020 17:02:00 +0000 (UTC) Date: Tue, 24 Mar 2020 10:01:10 -0700 From: Tony Lindgren To: Pavel Machek Cc: kernel list , linux-arm-kernel , linux-omap@vger.kernel.org, sre@kernel.org, nekit1000@gmail.com, mpartap@gmx.net, merlijn@wizzup.org, martin_rysavy@centrum.cz, Peter Hurley , linux-serial@vger.kernel.org, devicetree@vger.kernel.org, Laurent Pinchart Subject: Re: Droid 4 in -next -- still no backlight was Re: [PATCH 1/4] tty: n_gsm: Add support for serdev drivers Message-ID: <20200324170110.GB37466@atomide.com> References: <20200319173755.65082-1-tony@atomide.com> <20200319173755.65082-2-tony@atomide.com> <20200322224230.GB28082@amd> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200322224230.GB28082@amd> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Pavel Machek [200322 22:43]: > Hi! > > > We can make use of serdev drivers to do simple device drivers for > > TS 27.010 chanels, and we can handle vendor specific protocols on top > > of TS 27.010 with serdev drivers. > > I took all three series ( > > [PATCHv3 0/3] Lost key-up interrupt handling for omap4-keypa > [PATCH 1/3] Input: atmel_mxt_ts - use runtime PM instead of > [PATCHv5 0/4] n_gsm serdev support and protocol driver for d > > ) and applied them on top of next-20200320. > > Good news is that result boots. (So I did partial testing of the patches). > > Bad news is that I still don't have working backlight. I do have LED > and there's backlight device connected to the LED, so I can't control > the LED directly, but the screen is black (and I don't see boot > messages either). > > Before I start debugging, does screen work for you in -next, or do you > have some fixes I could try? Yes the backlight works for me now just fine with current v5.6-rc. But yeah, looks like LCD is again broken in current Linux next, maybe Laurent and Sebastian have some clues? Regards, Tony