From patchwork Wed Nov 18 08:29:49 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Guido_G=C3=BCnther?= X-Patchwork-Id: 326111 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=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT 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 0560DC63798 for ; Wed, 18 Nov 2020 08:30:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B50C82463F for ; Wed, 18 Nov 2020 08:30:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727661AbgKRIaP (ORCPT ); Wed, 18 Nov 2020 03:30:15 -0500 Received: from honk.sigxcpu.org ([24.134.29.49]:53600 "EHLO honk.sigxcpu.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727477AbgKRIaD (ORCPT ); Wed, 18 Nov 2020 03:30:03 -0500 Received: from localhost (localhost [127.0.0.1]) by honk.sigxcpu.org (Postfix) with ESMTP id 82547FB06; Wed, 18 Nov 2020 09:30:00 +0100 (CET) X-Virus-Scanned: Debian amavisd-new at honk.sigxcpu.org Received: from honk.sigxcpu.org ([127.0.0.1]) by localhost (honk.sigxcpu.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id XgZV2SVzBAk1; Wed, 18 Nov 2020 09:29:57 +0100 (CET) Received: by bogon.sigxcpu.org (Postfix, from userid 1000) id A295943F71; Wed, 18 Nov 2020 09:29:53 +0100 (CET) From: =?utf-8?q?Guido_G=C3=BCnther?= To: Thierry Reding , Sam Ravnborg , David Airlie , Daniel Vetter , Rob Herring , Ondrej Jirman , Linus Walleij , Arnd Bergmann , Krzysztof Kozlowski , Lubomir Rintel , Mark Brown , Geert Uytterhoeven , allen , Kuninori Morimoto , dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 2/6] drm/panel: mantix: Tweak init sequence Date: Wed, 18 Nov 2020 09:29:49 +0100 Message-Id: <8451831b60d5ecb73a156613d98218a31bd55680.1605688147.git.agx@sigxcpu.org> X-Mailer: git-send-email 2.29.2 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org We've seen some (non permanent) burn in and bad white balance on some of the panels. Adding this bit from a vendor supplied sequence fixes it. Fixes: 72967d5616d3 ("drm/panel: Add panel driver for the Mantix MLAF057WE51-X DSI panel") Signed-off-by: Guido Günther Reviewed-by: Linus Walleij --- drivers/gpu/drm/panel/panel-mantix-mlaf057we51.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/panel/panel-mantix-mlaf057we51.c b/drivers/gpu/drm/panel/panel-mantix-mlaf057we51.c index 0c5f22e95c2d..624d17b96a69 100644 --- a/drivers/gpu/drm/panel/panel-mantix-mlaf057we51.c +++ b/drivers/gpu/drm/panel/panel-mantix-mlaf057we51.c @@ -22,6 +22,7 @@ /* Manufacturer specific Commands send via DSI */ #define MANTIX_CMD_OTP_STOP_RELOAD_MIPI 0x41 #define MANTIX_CMD_INT_CANCEL 0x4C +#define MANTIX_CMD_SPI_FINISH 0x90 struct mantix { struct device *dev; @@ -66,6 +67,10 @@ static int mantix_init_sequence(struct mantix *ctx) dsi_generic_write_seq(dsi, 0x80, 0x64, 0x00, 0x64, 0x00, 0x00); msleep(20); + dsi_generic_write_seq(dsi, MANTIX_CMD_SPI_FINISH, 0xA5); + dsi_generic_write_seq(dsi, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x00, 0x2F); + msleep(20); + dev_dbg(dev, "Panel init sequence done\n"); return 0; }