Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932462AbbHSOwo (ORCPT ); Wed, 19 Aug 2015 10:52:44 -0400 Received: from regular1.263xmail.com ([211.150.99.140]:47831 "EHLO regular1.263xmail.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932413AbbHSOwl (ORCPT ); Wed, 19 Aug 2015 10:52:41 -0400 X-263anti-spam: KSV:0; X-MAIL-GRAY: 0 X-MAIL-DELIVERY: 1 X-KSVirus-check: 0 X-ABS-CHECKED: 4 X-ADDR-CHECKED: 0 X-RL-SENDER: ykk@rock-chips.com X-FST-TO: heiko@sntech.de X-SENDER-IP: 58.22.7.114 X-LOGIN-NAME: ykk@rock-chips.com X-UNIQUE-TAG: <782f0fe4121e8be1cfc40e3e92747680> X-ATTACHMENT-NUM: 0 X-DNS-TYPE: 0 From: Yakir Yang To: Heiko Stuebner , Thierry Reding , Jingoo Han , Fabio Estevam , Inki Dae , joe@perches.com, Russell King Cc: djkurtz@google.com, dianders@google.com, seanpaul@google.com, Takashi Iwai , ajaynumb@gmail.com, Andrzej Hajda , Kyungmin Park , Philipp Zabel , David Airlie , Gustavo Padovan , Vincent Palatin , Mark Yao , Andy Yan , Kumar Gala , Ian Campbell , Rob Herring , Pawel Moll , Kishon Vijay Abraham I , dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, Yakir Yang Subject: [PATCH v3 12/14] drm: bridge/analogix_dp: expand the delay time for hpd detect Date: Wed, 19 Aug 2015 09:52:09 -0500 Message-Id: <1439995929-18719-1-git-send-email-ykk@rock-chips.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1439995728-18046-1-git-send-email-ykk@rock-chips.com> References: <1439995728-18046-1-git-send-email-ykk@rock-chips.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1062 Lines: 35 Some edp screen with no hpd signal would need some delay time to ensure that screen would be ready for work, so we can expand the delay time in hpd detect function, it works prefectly on my rk3288 sdk board. Signed-off-by: Yakir Yang --- Changes in v3: None Changes in v2: None drivers/gpu/drm/bridge/analogix_dp_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/bridge/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix_dp_core.c index 99870f7..75dd44a 100644 --- a/drivers/gpu/drm/bridge/analogix_dp_core.c +++ b/drivers/gpu/drm/bridge/analogix_dp_core.c @@ -68,7 +68,7 @@ static int analogix_dp_detect_hpd(struct analogix_dp_device *dp) return 0; timeout_loop++; - usleep_range(10, 11); + usleep_range(100, 110); } /* -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/