From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 1E34523BD; Tue, 23 Jan 2024 00:25:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705969511; cv=none; b=DFoVWyxoHXfcRFh3urOUZmzzeMGPUh+xhRw2t61jmCOTqmugZjJ3tknqArQUZ9Cg5bVQmv69r7KFAPRKdoIOHm0TqAhGDmQj7g4fTI5TDalTBlVzGENYAb3qFR/IDrmaybNkb9jBD8Nul2vFKSJUavYky7Fj7fDjHDcM7aOCDJU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705969511; c=relaxed/simple; bh=8/rGW32vkZqdAByjbImPwQCUQi/AMWYsICiPDGwqyRc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=CHYnj4wsnwwVu2DOPgee4te04J7+/42G9TwxJkfsvSssXvvblksRM8FBTZmrGr8uwYgQPFTxKcLetDwpP3PMmmJ6dn3Gp9N8L7QUys9LuE/71OzteY5mvUoZDW3biPr58Y5bsTGutF1aJMlmatn8R50Kco71teSaoqnd2OvacWw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=P9GCGrw0; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="P9GCGrw0" Received: by smtp.kernel.org (Postfix) with ESMTPSA id AEB08C433A6; Tue, 23 Jan 2024 00:25:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1705969510; bh=8/rGW32vkZqdAByjbImPwQCUQi/AMWYsICiPDGwqyRc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=P9GCGrw0mA7TGUQ/97ilbcEN77HOM8SoXsaiZPZvZrK8hOdQ2+MM8dFxF6Y8a4e9C S1ntdmhV1c4oYB5/+vz6T6q7ac/IFLg0XvGiMWdB8KfSz2SPXxNSiZz2R6mpUrmO7r vee/t5e1JSQrw4082HkXpm2MEGuvrUqDddTZwA7Y= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Laurent Pinchart , Aradhya Bhatia , Tomi Valkeinen , Sasha Levin Subject: [PATCH 6.7 271/641] drm/tidss: Move reset to the end of dispc_init() Date: Mon, 22 Jan 2024 15:52:55 -0800 Message-ID: <20240122235826.397525881@linuxfoundation.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240122235818.091081209@linuxfoundation.org> References: <20240122235818.091081209@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.7-stable review patch. If anyone has any objections, please let me know. ------------------ From: Tomi Valkeinen [ Upstream commit 36d1e0852680aa038e2428d450673390111b165c ] We do a DSS reset in the middle of the dispc_init(). While that happens to work now, we should really make sure that e..g the fclk, which is acquired only later in the function, is enabled when doing a reset. This will be handled in a later patch, but for now, let's move the dispc_softreset() call to the end of dispc_init(), which is a sensible place for it anyway. Reviewed-by: Laurent Pinchart Reviewed-by: Aradhya Bhatia Link: https://lore.kernel.org/r/20231109-tidss-probe-v2-4-ac91b5ea35c0@ideasonboard.com Signed-off-by: Tomi Valkeinen Stable-dep-of: bc288a927815 ("drm/tidss: Fix dss reset") Signed-off-by: Sasha Levin --- drivers/gpu/drm/tidss/tidss_dispc.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/tidss/tidss_dispc.c b/drivers/gpu/drm/tidss/tidss_dispc.c index 9d9dee7abaef..8d822372bf94 100644 --- a/drivers/gpu/drm/tidss/tidss_dispc.c +++ b/drivers/gpu/drm/tidss/tidss_dispc.c @@ -2777,10 +2777,6 @@ int dispc_init(struct tidss_device *tidss) return r; } - /* K2G display controller does not support soft reset */ - if (feat->subrev != DISPC_K2G) - dispc_softreset(dispc); - for (i = 0; i < dispc->feat->num_vps; i++) { u32 gamma_size = dispc->feat->vp_feat.color.gamma_size; u32 *gamma_table; @@ -2829,6 +2825,10 @@ int dispc_init(struct tidss_device *tidss) of_property_read_u32(dispc->dev->of_node, "max-memory-bandwidth", &dispc->memory_bandwidth_limit); + /* K2G display controller does not support soft reset */ + if (feat->subrev != DISPC_K2G) + dispc_softreset(dispc); + tidss->dispc = dispc; return 0; -- 2.43.0