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 5BF762C80; Tue, 3 Dec 2024 15:49:12 +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=1733240952; cv=none; b=oETEUUCpsRynLt1HuBE2ZMrKy5QJmiNat+8ay0SnWc6vHGmRJnMXcl3kk8uNs5y/xVZ/atR1QXunj+KraseMQdbzcGvhD4ROhJvoo7qvfxOXMMlVwtEYPMofPVm7EA+1N9WkIFFNGyg6dvEvTwsQE0ZahpiCtzK6CtbUKl6YWuM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733240952; c=relaxed/simple; bh=rxzI2t4FRiulTdKUS+x/RxzxieKiguvxUpidtdyE+Fw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=t9cparLp3h5845EQYfLm/C9IjUtpQrzLKVu2IWHr+Ae5hxu4fDLVYRQmYz4gbbR3jD032O6THTf3gbEuXd2JgQjDn5nH/ZG55UpZm7ie136UoSsSXoXylpCEfUzUG++tP8bbJtiizYrt4CQENCrz8aMDB20+SnHk9yCKWEBxMEI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=m6ZIFG/c; 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="m6ZIFG/c" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BFD28C4CECF; Tue, 3 Dec 2024 15:49:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1733240952; bh=rxzI2t4FRiulTdKUS+x/RxzxieKiguvxUpidtdyE+Fw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=m6ZIFG/cHSHT3KXqF5EABSYDWFDk5BcrwaOKNx3BR9la/RREG/wHYl0ery4GCUtmU r7hWhRuJ/UhPNDsHqR3rR+Br8Z7dn0BkGOaEGpEWcnQDiBW3qoOb/ubqwVNq/CNVEE 9bV7YbxYKJthAECiGga3X+EPaZG21/k2Oz+jtMEU= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Roman Li , Fangzhi Zuo , Tom Chung , Daniel Wheeler , Alex Deucher , Sasha Levin Subject: [PATCH 6.12 284/826] drm/amd/display: Reduce HPD Detection Interval for IPS Date: Tue, 3 Dec 2024 15:40:11 +0100 Message-ID: <20241203144754.848411040@linuxfoundation.org> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20241203144743.428732212@linuxfoundation.org> References: <20241203144743.428732212@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 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Fangzhi Zuo [ Upstream commit a88b19b13fb41a3fa03ec67b5f57cc267fbfb160 ] Fix DP Compliance test 4.2.1.3, 4.2.2.8, 4.3.1.12, 4.3.1.13 when IPS enabled. Original HPD detection interval is set to 5s which violates DP compliance. Reduce the interval parameter, such that link training can be finished within 5 seconds. Fixes: afca033f10d3 ("drm/amd/display: Add periodic detection for IPS") Reviewed-by: Roman Li Signed-off-by: Fangzhi Zuo Signed-off-by: Tom Chung Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c index 8780d4737680f..9be87b5325173 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c @@ -35,7 +35,7 @@ #include "amdgpu_dm_trace.h" #include "amdgpu_dm_debugfs.h" -#define HPD_DETECTION_PERIOD_uS 5000000 +#define HPD_DETECTION_PERIOD_uS 2000000 #define HPD_DETECTION_TIME_uS 100000 void amdgpu_dm_crtc_handle_vblank(struct amdgpu_crtc *acrtc) -- 2.43.0