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 C256F28F4; Mon, 1 Jul 2024 00:13:03 +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=1719792783; cv=none; b=JQ9FjNvSRDM4I3tud607zJJt6AoAihqduqcv0asJVd4HK8O2NFf4L5a7XpWGSGd2IvRfLGEyqEM2fINp5YY4zNE9xsw17T1Jk1FcUJeRO0YQzY9Xjxcic7re8yCwH23/3kCXG75BOtLqZKWMyAaa+mvBrPJQEGMf0UitJBlaMlA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719792783; c=relaxed/simple; bh=C7B1z7zRNyQoTb37dINXnouKlYBV0R6doHvDIjnpcoI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=BsfQI2gtwgbUvZRcxZhSfrfM6f+jmpsRxszunAT9/+yRhUXXPKB1pqinDoLidIxd6VpWpgxTrbSh4mglaAW4QaknYqiVJS9gcJkErU60WHxtkvjDmTXi1qQjKVl59o/avZ0bbWyCFA4v6kSdEwSw3cKSXXOS0AVcoFO08/eCoWM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Osr4dRa9; 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="Osr4dRa9" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0BE4BC2BD10; Mon, 1 Jul 2024 00:13:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1719792783; bh=C7B1z7zRNyQoTb37dINXnouKlYBV0R6doHvDIjnpcoI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Osr4dRa9kdJGTCfiJE3buJql4sUbGSS03spsEEAycOouoizCGCcdanN8OjBwDzILA lgnzQeqkCwKYI8+KaqIOp81HTnElv1QloQTF7zvGl8bU6yfPObKKgdp3FluyOqvZVW NULwAgECu5Cgt2MVW3ve3LfRyoYAvJpqemFruQbQBFZy0MqddK4dne3LZj9+AETBwu glIU9AJ7ZXMOuPtWfpeFWVqq6LbBQrI1CbMtRvH1sGRZK3rlXILabKDlwptBHEiQqk odW9pypoVmolZX4siaLwL5WGI+D6c0Z9ET1wUefCa3BwGS1fgcgTaHeGUJpRL3Bpr3 U2kT+65lAYvng== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Daniel Miess , Nicholas Kazlauskas , Zaeem Mohamed , 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, charlene.liu@amd.com, hamza.mahfooz@amd.com, wayne.lin@amd.com, syed.hassan@amd.com, natanel.roizenman@amd.com, nicholas.susanto@amd.com, ahmed.ahmed@amd.com, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 6.9 15/20] drm/amd/display: Change dram_clock_latency to 34us for dcn351 Date: Sun, 30 Jun 2024 20:11:20 -0400 Message-ID: <20240701001209.2920293-15-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240701001209.2920293-1-sashal@kernel.org> References: <20240701001209.2920293-1-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 6.9.7 Content-Transfer-Encoding: 8bit From: Daniel Miess [ Upstream commit c60e20f13c27662de36cd5538d6299760780db52 ] [Why] Intermittent underflow observed when using 4k144 display on dcn351 [How] Update dram_clock_change_latency_us from 11.72us to 34us Reviewed-by: Nicholas Kazlauskas Acked-by: Zaeem Mohamed Signed-off-by: Daniel Miess Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/display/dc/dml/dcn351/dcn351_fpu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn351/dcn351_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn351/dcn351_fpu.c index b3ffab77cf889..40ca38dd1b23e 100644 --- a/drivers/gpu/drm/amd/display/dc/dml/dcn351/dcn351_fpu.c +++ b/drivers/gpu/drm/amd/display/dc/dml/dcn351/dcn351_fpu.c @@ -215,7 +215,7 @@ struct _vcs_dpi_soc_bounding_box_st dcn3_51_soc = { .urgent_latency_pixel_data_only_us = 4.0, .urgent_latency_pixel_mixed_with_vm_data_us = 4.0, .urgent_latency_vm_data_only_us = 4.0, - .dram_clock_change_latency_us = 11.72, + .dram_clock_change_latency_us = 34, .urgent_out_of_order_return_per_channel_pixel_only_bytes = 4096, .urgent_out_of_order_return_per_channel_pixel_and_vm_bytes = 4096, .urgent_out_of_order_return_per_channel_vm_only_bytes = 4096, -- 2.43.0