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 1F28F1CF5E2; Sun, 26 Jan 2025 14:56:10 +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=1737903371; cv=none; b=MgP7Ky5ayn2FABdCm4PKGb3PIZCZuNe9MAXjUZNLHntAmat0xAiip8iyD3hzfRrBMtgN9E/o7x3faMoZUJ5nL5qKlYWSw2yFEG9HCoB3mMV+qTMrq8zQ3PqOe0okC706qSZe+jF4UyJxZSD4qsjMia4kUvdoAHvgaQR19fliZuM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737903371; c=relaxed/simple; bh=p75+67CQSvwC2Ah/9YcMBAgYcG8U2BuzHzywnXyrnjs=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=fJ9xoE0lnuP+AsI9YoxFkTJIscsAbfT6kSz1HDHnQaRpHeyLEj+1gHjyQgxMRPbdkQLQVBL2jEiJQwaC2cTvcdSBSgglvEFS/WPIMSVHT+PA7fZCnF8VRHZopGeMOnIk0jf4Yi+ynm95HFo4GG6fiK7ZF8dh793++iMiOSEEQo0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=W45a9Xix; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="W45a9Xix" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7B967C4CEE3; Sun, 26 Jan 2025 14:56:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1737903370; bh=p75+67CQSvwC2Ah/9YcMBAgYcG8U2BuzHzywnXyrnjs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=W45a9XixeZvjIrblx7HVqGIi04D/sxbscQrdduyxE2VMZdtcs+8pGBgXeyMelymF8 YfSqcGVSEe9rLOB9S1PKs0FOHMHw/O3cHx+xu8yZYe/40cpEgVweXzDQ5TaXtglu6M RZlGoUDi1sYMYYiPoEUarX3hqvJ182hA41/GK9CbBxtLAFgrh23L4AD4Jg0vuvm28l VgFULrDMhciAz1VcQq+rbkv9nMrxDh2yxB6vHO40ZHFSIMqla80yQ+vhoKMMkuq2xC EoELFGhCBz9KszjOnVPfbvqr5oIfYcNHa71mrJv4eIKpQc7ovZ47qTw4ahhiowL6HD DFVZ1GtyPbrIA== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Gabe Teeger , Nicholas Kazlauskas , Tom Chung , Daniel Wheeler , Alex Deucher , Sasha Levin , harry.wentland@amd.com, sunpeng.li@amd.com, Rodrigo.Siqueira@amd.com, christian.koenig@amd.com, Xinhui.Pan@amd.com, airlied@gmail.com, simona@ffwll.ch, srinivasan.shanmugam@amd.com, roman.li@amd.com, rostrows@amd.com, linux@treblig.org, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 6.12 30/31] drm/amd/display: Limit Scaling Ratio on DCN3.01 Date: Sun, 26 Jan 2025 09:54:46 -0500 Message-Id: <20250126145448.930220-30-sashal@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250126145448.930220-1-sashal@kernel.org> References: <20250126145448.930220-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.12.11 Content-Transfer-Encoding: 8bit From: Gabe Teeger [ Upstream commit abc0ad6d08440761b199988c329ad7ac83f41c9b ] [why] Underflow and flickering was occuring due to high scaling ratios when resizing videos. [how] Limit the scaling ratios by increasing the max scaling factor Reviewed-by: Nicholas Kazlauskas Signed-off-by: Gabe Teeger Signed-off-by: Tom Chung Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- .../drm/amd/display/dc/resource/dcn301/dcn301_resource.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn301/dcn301_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dcn301/dcn301_resource.c index 7d04739c3ba14..4bbbe07ecde7d 100644 --- a/drivers/gpu/drm/amd/display/dc/resource/dcn301/dcn301_resource.c +++ b/drivers/gpu/drm/amd/display/dc/resource/dcn301/dcn301_resource.c @@ -671,9 +671,9 @@ static const struct dc_plane_cap plane_cap = { /* 6:1 downscaling ratio: 1000/6 = 166.666 */ .max_downscale_factor = { - .argb8888 = 167, - .nv12 = 167, - .fp16 = 167 + .argb8888 = 358, + .nv12 = 358, + .fp16 = 358 }, 64, 64 @@ -694,7 +694,7 @@ static const struct dc_debug_options debug_defaults_drv = { .disable_dcc = DCC_ENABLE, .vsr_support = true, .performance_trace = false, - .max_downscale_src_width = 7680,/*upto 8K*/ + .max_downscale_src_width = 4096,/*upto true 4k*/ .scl_reset_length10 = true, .sanity_checks = false, .underflow_assert_delay_us = 0xFFFFFFFF, -- 2.39.5