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 40AB015ECC0; Wed, 27 Mar 2024 12:19:02 +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=1711541942; cv=none; b=bkEDX/59u4SVZVbJZNCrrcHLkcIHr7CtoJ8ewnzMwjhVdvGSCECXfbD1tSuqu1rs1XjLZ0bhLMRk59BjpXmfsBATRqcIY8L7/rZv/kwNA3qDXyk6ye36xfSSDrQNd3CfC80ONvw6HMJrkM/QOkwxlrCY7t3R1LebfaTC9Vnwy4U= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711541942; c=relaxed/simple; bh=HQQ7qAJ7liJVQKz5cGHu/TbgouZievKm1GmpU7Y10Ws=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version:Content-Type; b=YPz7zecRjFNf+06fISK8+HqAW9nfmL8nJXc3w/OQwmSvngXLbjcz9DZe++K0/Rn8aLVc0OhSuQuthLGXBxYScgpEriJwVnTlhpnqSxR2nCTwGT4UHSeIr8qjhBVZlCa3cYuM2mpipPmz8LSwzkh8cJEF4q5qY2Ek8G2dwwaZ1iw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=CDYha0AU; 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="CDYha0AU" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 524D7C433F1; Wed, 27 Mar 2024 12:19:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1711541942; bh=HQQ7qAJ7liJVQKz5cGHu/TbgouZievKm1GmpU7Y10Ws=; h=From:To:Cc:Subject:Date:From; b=CDYha0AU1m3USQnZ+OYqyeGzpeWGKQHYJwR/2SFCUJyKLMv7Jo4tkJCRRwNoUAJwJ c6BACWeV4t/BqFAaO7gOayQ35gz+gh8sssLjLMIqintQGS3QG6jeMuFtpnteSC1B9I VzgigqqtCUWQMDaQxjdOrRuHF7N7AIrz65/KJYHPeoJwafCPR3n/e0NT7GXPVZJB52 aWdKZxfjqawHTGr/CDVICTjVhXUX4YN8MSGo7N0JBLxIqRC3I7vJV+eWImmfYdkPMh mk8EMzWL+aazzI09ntVu1fr2kGalpHpamLrzd9KVytCox5odhKdnLkqkUjJ44QYgw7 DX9Xd0QOp07pg== From: Sasha Levin To: stable@vger.kernel.org, ville.syrjala@linux.intel.com Cc: Jani Nikula , intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: FAILED: Patch "drm/i915/dp: Limit SST link rate to <=8.1Gbps" failed to apply to 5.10-stable tree Date: Wed, 27 Mar 2024 08:19:00 -0400 Message-ID: <20240327121900.2834849-1-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Hint: ignore X-stable: review Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The patch below does not apply to the 5.10-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . Thanks, Sasha ------------------ original commit in Linus's tree ------------------ >From 6061811d72e14f41f71b6a025510920b187bfcca Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= Date: Thu, 8 Feb 2024 17:45:52 +0200 Subject: [PATCH] drm/i915/dp: Limit SST link rate to <=8.1Gbps MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Limit the link rate to HBR3 or below (<=8.1Gbps) in SST mode. UHBR (10Gbps+) link rates require 128b/132b channel encoding which we have not yet hooked up into the SST/no-sideband codepaths. Cc: stable@vger.kernel.org Signed-off-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20240208154552.14545-1-ville.syrjala@linux.intel.com Reviewed-by: Jani Nikula --- drivers/gpu/drm/i915/display/intel_dp.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index ab415f41924d7..5045c34a16be1 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -2356,6 +2356,9 @@ intel_dp_compute_config_limits(struct intel_dp *intel_dp, limits->min_rate = intel_dp_common_rate(intel_dp, 0); limits->max_rate = intel_dp_max_link_rate(intel_dp); + /* FIXME 128b/132b SST support missing */ + limits->max_rate = min(limits->max_rate, 810000); + limits->min_lane_count = 1; limits->max_lane_count = intel_dp_max_lane_count(intel_dp); -- 2.43.0