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 BCA321991CE; Thu, 6 Jun 2024 14:12:46 +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=1717683166; cv=none; b=YmWToN61GI0v6JADeoEMG01Jlv2wHQwp6TYWfjt47UEjuJZURgVdrOr/uO9b8Vnc42CyZMr12LkCxaW5VT2P0xphm1Th/cbvubda+gMUvtvPZnjfkniArmDq+pRoSFy9ZyCQCVvXvU21ZNu3eK/gw+0RbqENbUs/VACY9sRj6qg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717683166; c=relaxed/simple; bh=iOZe5F6jCHlIxR1E7nphmlmdMJsZc4nW/uKBFjOxKSg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=M4Sp2W+ho4Yp6Y8i3tM0crxxJbGlfx8HBtYXQMTc5PrfhqzMq9LRHNoiemhnnsLZJxLJB29Wi8z3k+Wpapxn7u740h3G3WLJ3Jwcc7c2tQtr20fbvUflB1kqIJJ/g9ZBLTTfSoXnto3gK+zhjHywCS1q1zk5fLU74MIbKCQ3nKk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=cT3710xL; 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="cT3710xL" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9B845C2BD10; Thu, 6 Jun 2024 14:12:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1717683166; bh=iOZe5F6jCHlIxR1E7nphmlmdMJsZc4nW/uKBFjOxKSg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=cT3710xLLYZg65pkAil880I90s9wLA39SBhiFNUhM5INEwiHkMCQeP+BSctk/YoA3 DkIRyWw1c11R0EbH5GBqCoznjGAepYmn9S4PZDhs45lpaQVcvbt5ff3ydNMsUI+bn+ rvKyecsgY9Ly3wMUdIVyKuavCpalQDSjbBptXjPc= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Anthony Koo , Wayne Lin , Sung Joon Kim , Daniel Wheeler , Alex Deucher , Sasha Levin Subject: [PATCH 6.6 081/744] drm/amd/display: Disable seamless boot on 128b/132b encoding Date: Thu, 6 Jun 2024 15:55:53 +0200 Message-ID: <20240606131735.001691001@linuxfoundation.org> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240606131732.440653204@linuxfoundation.org> References: <20240606131732.440653204@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ 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 46b10ff8f6d41..72db370e2f21f 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc.c @@ -1710,6 +1710,9 @@ 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