From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1C0D4CD11DD for ; Fri, 29 Mar 2024 12:40:27 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 732441126BD; Fri, 29 Mar 2024 12:40:26 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.b="TGFmU6ns"; dkim-atps=neutral Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by gabe.freedesktop.org (Postfix) with ESMTPS id 90D3D1126BD; Fri, 29 Mar 2024 12:40:11 +0000 (UTC) Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id D163D61927; Fri, 29 Mar 2024 12:39:40 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 438F6C433F1; Fri, 29 Mar 2024 12:39:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1711715980; bh=o0vYGURicCJl6LD77hR9+V7iy5H2Vp0VhcIYqv++Vsg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TGFmU6nsxW+7tC9te865N80bWdQAHGcVHc/mCP0zs+TivNxPbNDPTyNXj8i2RFpCh ax6KVmAUk1hNlTJTcK9Ox/Nkv50ogs1CfyR36zZEu1ZvafoRbCrqbhWukirVuRVvR7 RxAn4bEmp8z36dYiqdQGbe/94vS9j6ixHNcrCB6aZ3o4ir0nmn8KsOfZfPTYNeqDIG 7tFnJKuGi7DRWAwdbNRk1yU/nxfdo1VzYiTFz8BNmFBLAR5x3QXoyQAHPV0C7x0Fux xYHih08USOtoPmfFxdqvfAx5loIzSrl0Ts3WMNjsCYjF6Y3mVLsb7NoPwmRIu0nOci AVaSkNScWwwCg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Sohaib Nadeem , Chaitanya Dhere , Alvin Lee , 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, daniel@ffwll.ch, jun.lei@amd.com, wenjing.liu@amd.com, austin.zheng@amd.com, Qingqing.Zhuo@amd.com, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 6.8 09/98] drm/amd/display: increased min_dcfclk_mhz and min_fclk_mhz Date: Fri, 29 Mar 2024 08:36:40 -0400 Message-ID: <20240329123919.3087149-9-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240329123919.3087149-1-sashal@kernel.org> References: <20240329123919.3087149-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.8.2 Content-Transfer-Encoding: 8bit X-BeenThere: amd-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussion list for AMD gfx List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: amd-gfx-bounces@lists.freedesktop.org Sender: "amd-gfx" From: Sohaib Nadeem [ Upstream commit d46fb0068c54d3dc95ae8298299c4d9edb0fb7c1 ] [why] Originally, PMFW said min FCLK is 300Mhz, but min DCFCLK can be increased to 400Mhz because min FCLK is now 600Mhz so FCLK >= 1.5 * DCFCLK hardware requirement will still be satisfied. Increasing min DCFCLK addresses underflow issues (underflow occurs when phantom pipe is turned on for some Sub-Viewport configs). [how] Increasing DCFCLK by raising the min_dcfclk_mhz Reviewed-by: Chaitanya Dhere Reviewed-by: Alvin Lee Acked-by: Tom Chung Signed-off-by: Sohaib Nadeem Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c index a0a65e0991041..ba76dd4a2ce29 100644 --- a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c +++ b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c @@ -2760,7 +2760,7 @@ static int build_synthetic_soc_states(bool disable_dc_mode_overwrite, struct clk struct _vcs_dpi_voltage_scaling_st entry = {0}; struct clk_limit_table_entry max_clk_data = {0}; - unsigned int min_dcfclk_mhz = 199, min_fclk_mhz = 299; + unsigned int min_dcfclk_mhz = 399, min_fclk_mhz = 599; static const unsigned int num_dcfclk_stas = 5; unsigned int dcfclk_sta_targets[DC__VOLTAGE_STATES] = {199, 615, 906, 1324, 1564}; -- 2.43.0