From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B40743D7D71 for ; Mon, 13 Apr 2026 14:05:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.180.131 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776089156; cv=none; b=K2XXZSZ8/ms/UzxZDMAg8hTIbOfmdUXQjx1jsTHhDO5nFBvplWfmLyL2c7tuVWyD6KXknyKDrelnjfbHMy/ERgi/6mqgB+wmAfc4NJcGjXK9MLl87BCmBSz2ZVGs60V8B8fzeej6WgUQr601xU53oH6fubhdLThaZrCxI7ccKMQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776089156; c=relaxed/simple; bh=DoendjqYMNCpaNDLx5nJc92Y8UtuCTST95sXT4ei12s=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=JTa62IQIHn+8rbQGtjej/8WfqDWoD56yJGw8hkLsAUYbDEmYb5lLqnjQQg/+S6ECec3OV45ebELNLc+jXsm+uCnG43f5TMy2OMi7O4FXg96aBohndn+K990hx5DlFuFb/8wwkpHDi5BMWXAr3vI9UKfKFKWr43cxMkauFEZgiu8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com; spf=pass smtp.mailfrom=oss.qualcomm.com; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b=YYFzsybg; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b=J6cd32L4; arc=none smtp.client-ip=205.220.180.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b="YYFzsybg"; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b="J6cd32L4" Received: from pps.filterd (m0279869.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 63DCZSB23990269 for ; Mon, 13 Apr 2026 14:05:51 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qualcomm.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= EacYV252Ylxyrr9FQ/70zKkziBbfMroxAzrIkM+nfi0=; b=YYFzsybgKNPrvJTp 5QTY6XU6xJbyYcZi2la+y5A/nzC8IurfThkGTG76iSEsCD1i6ef2iVc2Thx9ZQ// Ab7eFPy8Io8+/Rwr+Dx3TMTjGssvVjtzok5DnbiyzzmmBX4OYrJXca6bRykELa2L LJaxXdJbzta0AEMMRp9fVYYMKPNNMrvl8dq1xTqfz4a7W3FEq2U0HHLs1jPnZGkl +rudsyXpPEGx0Q0qlYn+p7WNAlLNv8a+p11d0PaWDlezv4SqeZTnrlxTIo3pK7tg qEvRLAj6dXifnS9tLe5AOC9x2t2uoAFI4QGibKpxK75iV/HqdVxZAVyPLDB5TMpW 240LEA== Received: from mail-oa1-f71.google.com (mail-oa1-f71.google.com [209.85.160.71]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4dh0mfrcha-1 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NOT) for ; Mon, 13 Apr 2026 14:05:50 +0000 (GMT) Received: by mail-oa1-f71.google.com with SMTP id 586e51a60fabf-42322062cf3so5833945fac.2 for ; Mon, 13 Apr 2026 07:05:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oss.qualcomm.com; s=google; t=1776089150; x=1776693950; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=EacYV252Ylxyrr9FQ/70zKkziBbfMroxAzrIkM+nfi0=; b=J6cd32L484b7bLV6acc69RVkzIkVRGSnBfiNz4RHgtG92v9Z9/hRmiDIgGdmJcoQND CyWIfVodmpKsD9Y/ANsrT4r5O1jQgvcbeLl0XX2cMCX/tP+oDHKlOXiRdijkYUCPGMuz busiI32gBjluuRWLvPcDCadgUdFrUiqbsCDew2MDzc9TaefH35/qOImo8iTZ/qRti8la hJ7kLimXxNh/eMBuXm4+TPdiB5GEX1bmtRFD8BOUJjD1mp8aKbyhcmshRSRCgjKy9ZBU 0ucCySWeRnGdtnoCAAX8GbWU4IOcC8keJYush3rW9Sdy/arg/Uo9np1+P6CskHFxhwxn +OLA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1776089150; x=1776693950; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-gg:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=EacYV252Ylxyrr9FQ/70zKkziBbfMroxAzrIkM+nfi0=; b=rC+UaE2+dWVBOnY2Ol7+nkf65jw5tdsEqqhzm1/mdsgwopo2mnsrdBJ5B6t1AoKJv7 LaA8ccxbjmc8DLyMpHLVTgy3vw34A2rqqxE1myiCbA1nv/d2Yclc6sNuMoD35GGZHk2p Zqokf4h44beQSsnMdDE/ztKWAxiShEeg24VNbWnWx/tecpOlEjcWoMAMfZbpmiciPFC1 66jOxQtUhfbQcpccgDsRA2HESzpWED73x58MCYdr4/DDGfL0YCsM4ED6cLdCbQxFkqxu wyVVyswH5GmYWTsvqNw0KdjsSLo4dHQkRwnBU7Qe9zzv4aRTLbR8P2WkGUOk8ubDhI5i hzBQ== X-Forwarded-Encrypted: i=1; AFNElJ+sWLQ/tu/dvw3ZcS5V+PWuI7NLKsOvo7/YI7sPp95hI21QPq84AyPsyae2ZGfd2l6Heuz1HAHNNTqe@vger.kernel.org X-Gm-Message-State: AOJu0YwLbRlXTxGNTXgW6AxEyjhjiq3y2l8cnqNgoUdXFGnaBoeRVHoM y7V44jdKfI6serm/0qSvNRjpqvb3DIyot5v506Zb4hiBt87DAdPVrDxovdWF2RPuUDmvjjL0bp2 nPULcd7z1aiFjGAy+EAQil5GJmb0GXW+5F13Z7k9MkHwFiR0yJBprXVrTuDT5ohpJ X-Gm-Gg: AeBDieskX/d48xlCqzraBLgFZ7TZldnysQf5zAyTxo1peUqU2CuchoPc5SrRLMjidx9 33Tq01IKXUaBlkvg79T9HWGEt+k0w4/rCt7Kh6X7hFMcWYsIzE26Ll2c85C55BTBONxVvKDuWY8 Tt1eTemdUnzDkgP7eoy5qUkG0Ngq9hW/tjZxnVmc+OZ9yfUu14eSqy2/LPOGfc4WtyLjWJyMWuR mgYzi6UXN4JUGpeSurktREMcb0S3D1cMiyjxpa05U2Rew9F3zxLG1oftQYck1V8/AWFIewQE4n7 X66Zx85jcEszQqfkzomY4C63LfS7jwcgX2QX21o4c/zkLCW/JiGJnCiFoNBOK6qZZH4jzMdXeEH BVWz7thbJuHDSW2bRmzE0VjbEQHnP9kql+SwWAKl6sQ0Kl7bYXch3xCDsjIgonwZ/5y44qjEIKk QaHYILBi1CnZRATDmGEZZ8KkMgB9ADyO1Ep4E= X-Received: by 2002:a05:6808:4f29:b0:467:fb9b:9818 with SMTP id 5614622812f47-478a0f18fddmr6046754b6e.40.1776089150300; Mon, 13 Apr 2026 07:05:50 -0700 (PDT) X-Received: by 2002:a05:6808:4f29:b0:467:fb9b:9818 with SMTP id 5614622812f47-478a0f18fddmr6046700b6e.40.1776089149735; Mon, 13 Apr 2026 07:05:49 -0700 (PDT) Received: from umbar.lan (2001-14ba-a073-af00-264b-feff-fe8b-be8a.rev.dnainternet.fi. [2001:14ba:a073:af00:264b:feff:fe8b:be8a]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-5a3eee8c91csm2687521e87.19.2026.04.13.07.05.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 13 Apr 2026 07:05:47 -0700 (PDT) From: Dmitry Baryshkov Date: Mon, 13 Apr 2026 17:05:31 +0300 Subject: [PATCH v3 08/21] drm/panel: himax-hx8394: set prepare_prev_first Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260413-waveshare-dsi-touch-v3-8-3aeb53022c32@oss.qualcomm.com> References: <20260413-waveshare-dsi-touch-v3-0-3aeb53022c32@oss.qualcomm.com> In-Reply-To: <20260413-waveshare-dsi-touch-v3-0-3aeb53022c32@oss.qualcomm.com> To: Neil Armstrong , Jessica Zhang , David Airlie , Simona Vetter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Cong Yang , Ondrej Jirman , Javier Martinez Canillas , Jagan Teki , Liam Girdwood , Mark Brown , Linus Walleij , Bartosz Golaszewski , Jie Gan Cc: dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org X-Mailer: b4 0.15.1 X-Developer-Signature: v=1; a=openpgp-sha256; l=1037; i=dmitry.baryshkov@oss.qualcomm.com; h=from:subject:message-id; bh=DoendjqYMNCpaNDLx5nJc92Y8UtuCTST95sXT4ei12s=; b=owEBbQGS/pANAwAKAYs8ij4CKSjVAcsmYgBp3Pgn18hIWmMRBJH77hbN0nEy2AN7HiG9Wx+pK kM48SmCVmmJATMEAAEKAB0WIQRMcISVXLJjVvC4lX+LPIo+Aiko1QUCadz4JwAKCRCLPIo+Aiko 1d4PB/43iCoGV/XPHUY+LTdEOriQxtRXRqWo0WE7dOyI1sgHpDIIc5Xb4xOmgDn9sQaqDo7hYnM Mu0SIMUpakh6NGnaA+3O4SqgzeZBufPT9R30GGkHmqx2G5UBf9uxemus2YKiTbKuHfwP4KliY5I hutN7+y7vsN4vTfDhK5Fwq3fM3vATeevkRefyzcKASTSWuNdfme6f0obHPK4mirZVJT+vFLT03v aJsE14N5TLnnRuMxJTUdhsdpvlIDlrfUOB0NYk5B8zUyF8faTHrbMtEMG2rO1mBIFv+uj3frVym Y2IZ1jPuAJXj21WzV1dHtNWQsXiCLbHZ/q0Hsw4xsRd/YVOK X-Developer-Key: i=dmitry.baryshkov@oss.qualcomm.com; a=openpgp; fpr=8F88381DD5C873E4AE487DA5199BF1243632046A X-Proofpoint-GUID: WMByFsV-4nTZ9dIhYVOInbNTkYPFJ1O2 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNDEzMDEzOCBTYWx0ZWRfX9Wtkq+wjpuBI 4ZkJ+xfAXt+1jdm6qBN7mKhmRoPfO8Rr7R3S1C82skfKRZ0S64ZCrw8oVXfEEbHK82JjFK9m+cd Xk7XjCKLGL5SCTO1f2DHUkzysK+WOv9Zn28qgOhwbzoI/DkperYGAaxNgejv7CyxJf9UppfqTBh /wpddxt0UohhsiarimDJ1hQK1DgM9HJ6nid6RJFQ7k404+9+fl0WB44ftME2liZoqx80wuOa1ND NjL2dIQqgnQUGiDN051jrNwUSdsvKo3MPbD5Q4QGk0f+wi7xymJdPJ+vevxww2+eVwVLGC8rd6X NKX+sF6g4aV1WsUPZF99Wp2yr7IeF3MgZI+687fL5L3U6RiZVWVXdpKUaARak1Lq5Ei0t+vzULx 8SLuUXvdmyulq1c7eDxDhDUQuwYkkTZzEKWl5IWpd954n8XCsRy4CfS54jpcCUJb5/YBBgpGpay C1CfbJooJE7fjjlnc9A== X-Authority-Analysis: v=2.4 cv=cMvQdFeN c=1 sm=1 tr=0 ts=69dcf83e cx=c_pps a=CWtnpBpaoqyeOyNyJ5EW7Q==:117 a=xqWC_Br6kY4A:10 a=IkcTkHD0fZMA:10 a=A5OVakUREuEA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=_glEPmIy2e8OvE2BGh3C:22 a=VwQbUJbxAAAA:8 a=20KFwNOVAAAA:8 a=EUspDBNiAAAA:8 a=ic6V0yA_i5s2A4o5CdYA:9 a=QEXdDO2ut3YA:10 a=vh23qwtRXIYOdz9xvnmn:22 X-Proofpoint-ORIG-GUID: WMByFsV-4nTZ9dIhYVOInbNTkYPFJ1O2 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-04-13_03,2026-04-13_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 spamscore=0 priorityscore=1501 adultscore=0 impostorscore=0 malwarescore=0 bulkscore=0 phishscore=0 clxscore=1015 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2604010000 definitions=main-2604130138 Sending DSI commands from the prepare() callback requires DSI link to be up at that point. For DSI hosts is guaranteed only if the panel driver sets the .prepare_prev_first flag. Set it to let these panels work with the DSI hosts which don't power on the link in their .mode_set callback. Reviewed-by: Linus Walleij Reviewed-by: Javier Martinez Canillas Signed-off-by: Dmitry Baryshkov --- drivers/gpu/drm/panel/panel-himax-hx8394.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/panel/panel-himax-hx8394.c b/drivers/gpu/drm/panel/panel-himax-hx8394.c index c4d3e09a228d..d64f3521eb15 100644 --- a/drivers/gpu/drm/panel/panel-himax-hx8394.c +++ b/drivers/gpu/drm/panel/panel-himax-hx8394.c @@ -792,6 +792,8 @@ static int hx8394_probe(struct mipi_dsi_device *dsi) if (ret) return ret; + ctx->panel.prepare_prev_first = true; + drm_panel_add(&ctx->panel); ret = mipi_dsi_attach(dsi); -- 2.47.3