From 8f5f63d558b979402ae48f3df2f7bc3589531e28 Mon Sep 17 00:00:00 2001
From: James Ausmus <james.ausmus@intel.com>
Date: Thu, 12 Oct 2017 14:30:37 -0700
Subject: [PATCH] drm/i915/bdw: Fix DP_AUX_CH_CTL_TIME_OUT setting
Mime-version: 1.0
Content-type: text/plain; charset=UTF-8
Content-transfer-encoding: 8bit
Git-commit: 8f5f63d558b979402ae48f3df2f7bc3589531e28
Patch-mainline: v4.15-rc1
References: FATE#322643 bsc#1055900
Per BSpec, 400us is "BDW+ Do not use this setting." - not just PORT_A.
Set BDW to 600us unconditionally.
V2:
-Split in to two patches (Rodrigo)
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: James Ausmus <james.ausmus@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171012213037.4245-2-james.ausmus@intel.com
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/gpu/drm/i915/intel_dp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -1007,7 +1007,7 @@ static uint32_t g4x_get_aux_send_ctl(str
else
precharge = 5;
- if (IS_BROADWELL(dev_priv) && intel_dig_port->port == PORT_A)
+ if (IS_BROADWELL(dev_priv))
timeout = DP_AUX_CH_CTL_TIME_OUT_600us;
else
timeout = DP_AUX_CH_CTL_TIME_OUT_400us;