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Tue, 3 Jul 2018 12:03:48 +0200 Received: from lvloginb.cadence.com (10.165.177.11) by maileu3.global.cadence.com (10.160.88.99) with Microsoft SMTP Server id 15.0.1367.3 via Frontend Transport; Tue, 3 Jul 2018 12:03:48 +0200 Received: from lvloginb.cadence.com (localhost [127.0.0.1]) by lvloginb.cadence.com (8.14.4/8.14.4) with ESMTP id w63A3VPL029781; Tue, 3 Jul 2018 11:03:31 +0100 Received: (from dkos@localhost) by lvloginb.cadence.com (8.14.4/8.14.4/Submit) id w63A3VLS029780; Tue, 3 Jul 2018 11:03:31 +0100 From: Damian Kos To: David Airlie , Rob Herring , "Mark Rutland" , Gustavo Padovan , Maarten Lankhorst , Sean Paul , Sandy Huang , =?utf-8?q?Heiko_St=C3=BCbner?= , Damian Kos , , , , , CC: , , , "Quentin Schulz" Subject: [PATCH 07/12] drm/dp: fix drm_dp_link_train_clock_recovery_delay for DP 1.4 Date: Tue, 3 Jul 2018 11:02:18 +0100 Message-ID: <1530612152-27555-8-git-send-email-dkos@cadence.com> X-Mailer: git-send-email 1.9.0 In-Reply-To: <1530612152-27555-1-git-send-email-dkos@cadence.com> References: <1530612152-27555-1-git-send-email-dkos@cadence.com> MIME-Version: 1.0 X-OrganizationHeadersPreserved: maileu3.global.cadence.com X-EOPAttributedMessage: 0 X-Forefront-Antispam-Report: CIP:158.140.1.28; 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Signed-off-by: Quentin Schulz Signed-off-by: Damian Kos --- drivers/gpu/drm/drm_dp_helper.c | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-) -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c index b6a27ab..92f3880 100644 --- a/drivers/gpu/drm/drm_dp_helper.c +++ b/drivers/gpu/drm/drm_dp_helper.c @@ -152,6 +152,11 @@ void drm_dp_link_train_clock_recovery_delay(const u8 dpcd[DP_RECEIVER_CAP_SIZE]) unsigned int training_interval = dpcd[DP_TRAINING_AUX_RD_INTERVAL] & DP_TRAINING_AUX_RD_INTERVAL_MASK; + if (dpcd[DP_DPCD_REV] == 0x14) { + udelay(100); + return; + } + if (training_interval == 0) udelay(100); else