From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:49049 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755612AbcDJR2C (ORCPT ); Sun, 10 Apr 2016 13:28:02 -0400 Subject: Patch "drm/radeon: Don't drop DP 2.7 Ghz link setup on some cards." has been added to the 4.4-stable tree To: mario.kleiner.de@gmail.com, alexander.deucher@amd.com, gregkh@linuxfoundation.org Cc: , From: Date: Sun, 10 Apr 2016 10:28:01 -0700 Message-ID: <14603092819081@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled drm/radeon: Don't drop DP 2.7 Ghz link setup on some cards. to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: drm-radeon-don-t-drop-dp-2.7-ghz-link-setup-on-some-cards.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 459ee1c3fd097ab56ababd8ff4bb7ef6a792de33 Mon Sep 17 00:00:00 2001 From: Mario Kleiner Date: Sun, 6 Mar 2016 02:39:53 +0100 Subject: drm/radeon: Don't drop DP 2.7 Ghz link setup on some cards. From: Mario Kleiner commit 459ee1c3fd097ab56ababd8ff4bb7ef6a792de33 upstream. As observed on Apple iMac10,1, DCE-3.2, RV-730, link rate of 2.7 Ghz is not selected, because the args.v1.ucConfig flag setting for 2.7 Ghz gets overwritten by a following assignment of the transmitter to use. Move link rate setup a few lines down to fix this. In practice this didn't have any positive or negative effect on display setup on the tested iMac10,1 so i don't know if backporting to stable makes sense or not. Signed-off-by: Mario Kleiner Signed-off-by: Alex Deucher Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/radeon/atombios_encoders.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) --- a/drivers/gpu/drm/radeon/atombios_encoders.c +++ b/drivers/gpu/drm/radeon/atombios_encoders.c @@ -892,8 +892,6 @@ atombios_dig_encoder_setup2(struct drm_e else args.v1.ucLaneNum = 4; - if (ENCODER_MODE_IS_DP(args.v1.ucEncoderMode) && (dp_clock == 270000)) - args.v1.ucConfig |= ATOM_ENCODER_CONFIG_DPLINKRATE_2_70GHZ; switch (radeon_encoder->encoder_id) { case ENCODER_OBJECT_ID_INTERNAL_UNIPHY: args.v1.ucConfig = ATOM_ENCODER_CONFIG_V2_TRANSMITTER1; @@ -910,6 +908,10 @@ atombios_dig_encoder_setup2(struct drm_e args.v1.ucConfig |= ATOM_ENCODER_CONFIG_LINKB; else args.v1.ucConfig |= ATOM_ENCODER_CONFIG_LINKA; + + if (ENCODER_MODE_IS_DP(args.v1.ucEncoderMode) && (dp_clock == 270000)) + args.v1.ucConfig |= ATOM_ENCODER_CONFIG_DPLINKRATE_2_70GHZ; + break; case 2: case 3: Patches currently in stable-queue which might be from mario.kleiner.de@gmail.com are queue-4.4/drm-radeon-don-t-drop-dp-2.7-ghz-link-setup-on-some-cards.patch