From nobody Mon Feb 9 01:47:33 2026 Received: from mail.hugovil.com (mail.hugovil.com [162.243.120.170]) (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 30FA91EF38F; Thu, 17 Apr 2025 19:55:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=162.243.120.170 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744919733; cv=none; b=dfUk1y9JuKruutNbY4YcQ+bYoPRboLikSmXTHNbP5P0vnwueFckhxvDe8oqfNV4yCNO+IzEtemcviD1OrH2E4gskXnuhYYYGvJocalmT8yhL0gCw9mgExSIOusgA/xnOGq8JvglDxITzyW9S2pNdFUYqee2tqXcSITBtxkrARkI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744919733; c=relaxed/simple; bh=PavDeZO+/OtHq3jgGVCjzL68cJ1U/v1a0S+w3cI+a5A=; h=From:To:Cc:Date:Message-Id:MIME-Version:Subject; b=mogDixzrougwAs2ODF42POAM65NNhEguzTkEnadZfdWVzqO34SiZ+pqX0q9EocLXZjmgwqp8DVIzaNQWDmrQd5ZMuKa3YMiAtlzjnBztbOxsuLXC+b9xSyKCNYasvMjitkBO0kFjG3dIV+O1zFSt4DqqIgHVlcnwsxUPvFclKrU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=hugovil.com; spf=pass smtp.mailfrom=hugovil.com; dkim=pass (1024-bit key) header.d=hugovil.com header.i=@hugovil.com header.b=j4Mr40UW; arc=none smtp.client-ip=162.243.120.170 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=hugovil.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=hugovil.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=hugovil.com header.i=@hugovil.com header.b="j4Mr40UW" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=hugovil.com ; s=x; h=Subject:Content-Transfer-Encoding:MIME-Version:Message-Id:Date:Cc:To :From:subject:date:message-id:reply-to; bh=qT5lUbWkD7RDrtfHAg0hqc+izqmK/T9JNswM903OaGI=; b=j4Mr40UWBtWABqrkVj2d68iDHx oTPbm+2ReACRCF3rYSB2nAJiGnBVHP3sKP/m3McOMlkXcNkdzfvRT6sYzMf48SjEVHwuL15CffUD+ 115T0vl2Ahp0nRes+rrgB5SLl09T4zMvDfcCNn+khYxOxXzFawjf2SpDRrftFb6oecJg=; Received: from modemcable168.174-80-70.mc.videotron.ca ([70.80.174.168]:58954 helo=pettiford.lan) by mail.hugovil.com with esmtpa (Exim 4.92) (envelope-from ) id 1u5VKG-0000g8-Mk; Thu, 17 Apr 2025 15:55:09 -0400 From: Hugo Villeneuve To: Jagan Teki , Neil Armstrong , Jessica Zhang , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Linus Walleij , Zhaoxiong Lv , Hugo Villeneuve Cc: hugo@hugovil.com, stable@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Date: Thu, 17 Apr 2025 15:55:06 -0400 Message-Id: <20250417195507.778731-1-hugo@hugovil.com> X-Mailer: git-send-email 2.39.5 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-SA-Exim-Connect-IP: 70.80.174.168 X-SA-Exim-Mail-From: hugo@hugovil.com X-Spam-Level: X-Spam-Report: * -1.0 ALL_TRUSTED Passed through trusted hosts only via SMTP Subject: [PATCH] drm: panel: jd9365da: fix reset signal polarity in unprepare X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.hugovil.com) Content-Type: text/plain; charset="utf-8" From: Hugo Villeneuve commit a8972d5a49b4 ("drm: panel: jd9365da-h3: fix reset signal polarity") fixed reset signal polarity in jadard_dsi_probe() and jadard_prepare(). It was not done in jadard_unprepare() because of an incorrect assumption about reset line handling in power off mode. After looking into the datasheet, it now appears that before disabling regulators, the reset line is deasserted first, and if reset_before_power_off_vcioo is true, then the reset line is asserted. Fix reset polarity by inverting gpiod_set_value() second argument in in jadard_unprepare(). Fixes: 6b818c533dd8 ("drm: panel: Add Jadard JD9365DA-H3 DSI panel") Fixes: 2b976ad760dc ("drm/panel: jd9365da: Support for kd101ne3-40ti MIPI-D= SI panel") Fixes: a8972d5a49b4 ("drm: panel: jd9365da-h3: fix reset signal polarity") Cc: stable@vger.kernel.org Signed-off-by: Hugo Villeneuve Reviewed-by: Neil Armstrong --- drivers/gpu/drm/panel/panel-jadard-jd9365da-h3.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/panel/panel-jadard-jd9365da-h3.c b/drivers/gpu= /drm/panel/panel-jadard-jd9365da-h3.c index 7d68a8acfe2ea..eb0f8373258c3 100644 --- a/drivers/gpu/drm/panel/panel-jadard-jd9365da-h3.c +++ b/drivers/gpu/drm/panel/panel-jadard-jd9365da-h3.c @@ -129,11 +129,11 @@ static int jadard_unprepare(struct drm_panel *panel) { struct jadard *jadard =3D panel_to_jadard(panel); =20 - gpiod_set_value(jadard->reset, 1); + gpiod_set_value(jadard->reset, 0); msleep(120); =20 if (jadard->desc->reset_before_power_off_vcioo) { - gpiod_set_value(jadard->reset, 0); + gpiod_set_value(jadard->reset, 1); =20 usleep_range(1000, 2000); } base-commit: 7adf8b1afc14832de099f9e178f08f91dc0dd6d0 --=20 2.39.5