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 72BA2337117; Fri, 17 Oct 2025 15:19:24 +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=1760714364; cv=none; b=pIswmLz5dEqkxM1PhXpullJgexzIl4YpDlB2lLJo9nIUbBJqGlELLb1g8iku2Cz79yoTkqqrPyaZrUVMzAfqKMnoqFaVSuonsSO7bkE7GzOseAJ/fpkNo8BGTIoFtRZM6pmpPHoXXfoQlBDQTGWeCkCdPoYd8/maAehklQQcmVQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760714364; c=relaxed/simple; bh=/A23npCBNbGC/UtHjVeTkd8mEloDSVDHVdtUWcJlCxE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=SsOJ4SSGbX/p3ergVVBAlw/FZumUvXojvLWmfNKqHzOPA0YXdTsr1MdeNeFIYi8JLPpgkXJVU1XTRQvI59SlRgskBStMHF3ybumuoLFA/134+TF0Bguiz4mC94sEYFMkgPuGBuCct8DKazNPsOFcnDVNJb0qYqPo1kt7eLo5onU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=yrCn7pSz; 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="yrCn7pSz" Received: by smtp.kernel.org (Postfix) with ESMTPSA id EF9DAC4CEE7; Fri, 17 Oct 2025 15:19:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1760714364; bh=/A23npCBNbGC/UtHjVeTkd8mEloDSVDHVdtUWcJlCxE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=yrCn7pSzm+hww8WaUGAKM8m8RPCVg5pgxgb4vrWORgxMT7+n9vKGT9DnVG37ZEq8c ydn70oeOZrKqEW/t3wgJdYq4lRt5v6VAF8el7nE2zqkuAiXbkyO/XdFBZ+r9LAp4mL V+kjcaEC7268f0pvnDsUyX9Q8lYhW7btAiKX8X/4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Mario Limonciello , Alex Deucher , Aurabindo Pillai , Fangzhi Zuo , Alex Hung Subject: [PATCH 6.12 119/277] drm/amd/display: Enable Dynamic DTBCLK Switch Date: Fri, 17 Oct 2025 16:52:06 +0200 Message-ID: <20251017145151.471225261@linuxfoundation.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251017145147.138822285@linuxfoundation.org> References: <20251017145147.138822285@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Fangzhi Zuo commit 5949e7c4890c3cf65e783c83c355b95e21f10dba upstream. [WHAT] Since dcn35, DTBCLK can be disabled when no DP2 sink connected for power saving purpose. Cc: Mario Limonciello Cc: Alex Deucher Cc: stable@vger.kernel.org Reviewed-by: Aurabindo Pillai Signed-off-by: Fangzhi Zuo Signed-off-by: Alex Hung Signed-off-by: Alex Deucher Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -2027,6 +2027,10 @@ static int amdgpu_dm_init(struct amdgpu_ init_data.flags.disable_ips_in_vpb = 0; + /* DCN35 and above supports dynamic DTBCLK switch */ + if (amdgpu_ip_version(adev, DCE_HWIP, 0) >= IP_VERSION(3, 5, 0)) + init_data.flags.allow_0_dtb_clk = true; + /* Enable DWB for tested platforms only */ if (amdgpu_ip_version(adev, DCE_HWIP, 0) >= IP_VERSION(3, 0, 0)) init_data.num_virtual_links = 1;