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 CE50E135A44; Tue, 7 May 2024 23:09:44 +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=1715123384; cv=none; b=K2KkdrvYNUUHhwTPNlktm+cRV2y637Tp6OmecqCO29cazFOyv//JytIGptA7ISVyxTb3F8pCP+4NRS6qjEZaQlZIywTvfbk+wbzyna+gi/z/+MuQ4ueQuzcBWFKig1waPoUYtiAEPMeH/UOoBkjzJq3X3koCW7SP8+EWxQmnquY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715123384; c=relaxed/simple; bh=Z1MO1ZagCXquTyQi4RXjNlyeIi8Vavtv2regL3YQls4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=oKfatxou494+8l6KDgS4RkPeHHT4fcfvE2HJTB0T80fyOfSpUmYxWV/717aTNiD7+xbiD1c0ZkHjE1uL4PDiwEZRG5PjEBb8VbdvbENpQx/t3xU0YXT9xOAmdlQMS6SJKh6uE68JwJ33D6FV1KG+JAoUtTRf4N7brxBdJ9DUuiU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=FvygdZcl; 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="FvygdZcl" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4DE38C4AF68; Tue, 7 May 2024 23:09:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1715123384; bh=Z1MO1ZagCXquTyQi4RXjNlyeIi8Vavtv2regL3YQls4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=FvygdZclTQBMnefzCqISuxqBnwZCrjcvAcWsDyk0zKpFLpTuCsW4CylY/i68rZs8m sNePKhY+F/ae2ZfHkm6FBglfY+h4cM/tZp6O3u/oipJHGZZkw2vpqjgBxOLXcR0eGg E7xavrZBUCWLCHxRmIRlufUX2ph/GjT7jhNQ9oq2VrhYryHDb0St2P7ysX9rTZGW4S f1hadcNqGiLCyRHMcpXe0g80jYPsqM3hty2PFv545Dp2gktqU+cde+CiIwvxr0m0ev MUYYxlRViNGbqZy9BKQKMdy1fxUpJXEt8+FiL7+ZkfIxuswONdGsHAOfrbCvTRe9Gs d2m5LGMc3nMcw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Sung Joon Kim , Anthony Koo , Wayne Lin , 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, daniel@ffwll.ch, alvin.lee2@amd.com, jun.lei@amd.com, wenjing.liu@amd.com, aric.cyr@amd.com, dillon.varone@amd.com, chiawen.huang@amd.com, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 6.8 42/52] drm/amd/display: Disable seamless boot on 128b/132b encoding Date: Tue, 7 May 2024 19:07:08 -0400 Message-ID: <20240507230800.392128-42-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240507230800.392128-1-sashal@kernel.org> References: <20240507230800.392128-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.8.9 Content-Transfer-Encoding: 8bit From: Sung Joon Kim [ Upstream commit 6f0c228ed9184287031a66b46a79e5a3d2e73a86 ] [why] preOS will not support display mode programming and link training for UHBR rates. [how] If we detect a sink that's UHBR capable, disable seamless boot Reviewed-by: Anthony Koo Acked-by: Wayne Lin Signed-off-by: Sung Joon Kim Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/display/dc/core/dc.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c index 3c3d613c5f00e..040b5c2a57586 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc.c @@ -1804,6 +1804,9 @@ bool dc_validate_boot_timing(const struct dc *dc, return false; } + if (link->dpcd_caps.channel_coding_cap.bits.DP_128b_132b_SUPPORTED) + return false; + if (dc->link_srv->edp_is_ilr_optimization_required(link, crtc_timing)) { DC_LOG_EVENT_LINK_TRAINING("Seamless boot disabled to optimize eDP link rate\n"); return false; -- 2.43.0