From patchwork Tue Jan 31 01:59:19 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?WGlubGVpIExlZSAo5p2O5piV56OKKQ==?= X-Patchwork-Id: 13122137 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D5A3BC61DA4 for ; Tue, 31 Jan 2023 01:59:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type:MIME-Version: References:In-Reply-To:Message-ID:Date:Subject:CC:To:From:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=BoWoQMdNfjipELBRS3LNoduY6UIoypqp210tmpmIGPc=; b=V4HVy7zc8U254nCFEdCKFpBI8l z+953qNvkrV66opw0+lzvWA4MJ/0AfDDjoi4jfu78p32SxCismGviEP/IqnKwHj2C2GkhqTYw2fWI 2Pw3iBz/JPxUcN45zRUJF9mxAOMwZWhCItFcOU7oW5XrSLB9LRdWS8G/MxmDqK085vE6QRpd/t047 ngDSG80uwLI96jlKp4wfGZAiSMks2mkmKTYvCoOrNChWFN1iQAl1KptjqtaJOLxeuEhp/6b5mCK9A lMHkng3M0WrzEoKBXlDGvhYxnBRBpaJs75KlDpwLJGI3gGK3TjPjoLbF6DSWwwwjwkLWpnHaBh4Y7 wC8EfXZQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pMfvt-0062Gj-Uh; Tue, 31 Jan 2023 01:59:37 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pMfvr-0062FB-F5; Tue, 31 Jan 2023 01:59:36 +0000 X-UUID: e49027bea10a11edbbe3f76fe852e059-20230130 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=BoWoQMdNfjipELBRS3LNoduY6UIoypqp210tmpmIGPc=; b=RH9r+iTh0e3vkkQw9TUn+sauGOAeqXhE6xAkv7t9YgzfL+wW5a6OSBoJJ1moDGNdf8t4PtpDWvsD/nGpnSRK8LqFgKgTZWoocTtd/q4QEMl8LYiszr6C15fimPHJKTo2whodsE7xa/OyBLKy0aqYvpaVmBXM7NsN2w7tmw2adrI=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.18,REQID:e1c1944c-03c0-4925-ab3f-371d0382c183,IP:0,U RL:0,TC:0,Content:-5,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION :release,TS:-5 X-CID-META: VersionHash:3ca2d6b,CLOUDID:116c678d-8530-4eff-9f77-222cf6e2895b,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:0,File:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0 X-CID-BVR: 0 X-UUID: e49027bea10a11edbbe3f76fe852e059-20230130 Received: from mtkmbs13n2.mediatek.inc [(172.21.101.108)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 285732481; Mon, 30 Jan 2023 18:59:27 -0700 Received: from mtkmbs13n1.mediatek.inc (172.21.101.193) by mtkmbs10n2.mediatek.inc (172.21.101.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.3; Tue, 31 Jan 2023 09:59:26 +0800 Received: from mszsdaap41.gcn.mediatek.inc (10.16.6.141) by mtkmbs13n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.15 via Frontend Transport; Tue, 31 Jan 2023 09:59:25 +0800 From: To: , , , , , , , , CC: , , , , , Xinlei Lee Subject: [PATCH v3 2/2] drm/panel: boe-tv101wum-nl6: Fine tune the panel power sequence Date: Tue, 31 Jan 2023 09:59:19 +0800 Message-ID: <1675130359-24459-3-git-send-email-xinlei.lee@mediatek.com> X-Mailer: git-send-email 2.6.4 In-Reply-To: <1675130359-24459-1-git-send-email-xinlei.lee@mediatek.com> References: <1675130359-24459-1-git-send-email-xinlei.lee@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230130_175935_527075_B12BA031 X-CRM114-Status: GOOD ( 12.57 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org From: Xinlei Lee For "boe,tv105wum-nw0" this special panel, it is stipulated in the panel spec that MIPI needs to keep the LP11 state before the lcm_reset pin is pulled high. Signed-off-by: Xinlei Lee Reviewed-by: AngeloGioacchino Del Regno --- drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c b/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c index f0093035f1ff..67df61de64ae 100644 --- a/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c +++ b/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c @@ -36,6 +36,7 @@ struct panel_desc { const struct panel_init_cmd *init_cmds; unsigned int lanes; bool discharge_on_disable; + bool lp11_before_reset; }; struct boe_panel { @@ -1261,6 +1262,10 @@ static int boe_panel_prepare(struct drm_panel *panel) usleep_range(10000, 11000); + if (boe->desc->lp11_before_reset) { + mipi_dsi_dcs_nop(boe->dsi); + usleep_range(1000, 2000); + } gpiod_set_value(boe->enable_gpio, 1); usleep_range(1000, 2000); gpiod_set_value(boe->enable_gpio, 0); @@ -1487,6 +1492,7 @@ static const struct panel_desc boe_tv105wum_nw0_desc = { .mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE | MIPI_DSI_MODE_LPM, .init_cmds = boe_init_cmd, + .lp11_before_reset = true, }; static int boe_panel_get_modes(struct drm_panel *panel,