From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753462AbeCNGdy (ORCPT ); Wed, 14 Mar 2018 02:33:54 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:54066 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751270AbeCNGdv (ORCPT ); Wed, 14 Mar 2018 02:33:51 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org BCEC360FEC Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=architt@codeaurora.org Subject: Re: [PATCH v5 21/36] drm/bridge: analogix_dp: Fix timeout of video streamclk config To: Enric Balletbo i Serra , inki.dae@samsung.com, thierry.reding@gmail.com, hjc@rock-chips.com, seanpaul@chromium.org, airlied@linux.ie, tfiga@chromium.org, heiko@sntech.de Cc: dri-devel@lists.freedesktop.org, dianders@chromium.org, a.hajda@samsung.com, ykk@rock-chips.com, kernel@collabora.com, m.szyprowski@samsung.com, linux-samsung-soc@vger.kernel.org, jy0922.shim@samsung.com, rydberg@bitmath.org, krzk@kernel.org, linux-rockchip@lists.infradead.org, kgene@kernel.org, linux-input@vger.kernel.org, orjan.eide@arm.com, wxt@rock-chips.com, jeffy.chen@rock-chips.com, linux-arm-kernel@lists.infradead.org, mark.yao@rock-chips.com, wzz@rock-chips.com, hl@rock-chips.com, jingoohan1@gmail.com, sw0312.kim@samsung.com, linux-kernel@vger.kernel.org, kyungmin.park@samsung.com, Laurent.pinchart@ideasonboard.com, kuankuan.y@gmail.com, hshi@chromium.org References: <20180309222327.18689-1-enric.balletbo@collabora.com> <20180309222327.18689-22-enric.balletbo@collabora.com> From: Archit Taneja Message-ID: Date: Wed, 14 Mar 2018 12:03:35 +0530 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0 MIME-Version: 1.0 In-Reply-To: <20180309222327.18689-22-enric.balletbo@collabora.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Saturday 10 March 2018 03:53 AM, Enric Balletbo i Serra wrote: > From: zain wang > > The STRM_VALID bit in register ANALOGIX_DP_SYS_CTL_3 may be unstable, > so we may hit the error log "Timeout of video streamclk ok" since > checked this unstable bit. > In fact, we can go continue and the streamclk is ok if we wait enough time, > it does no effect on display. > Let's change this error to warn. Reviewed-by: Archit Taneja Thanks, Archit > > Cc: Douglas Anderson > Signed-off-by: zain wang > Signed-off-by: Sean Paul > Signed-off-by: Thierry Escande > Reviewed-by: Andrzej Hajda > Signed-off-by: Enric Balletbo i Serra > Tested-by: Marek Szyprowski > --- > > drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c > index 1f1cb624414d..d76e1652b1fd 100644 > --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c > +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c > @@ -921,8 +921,9 @@ static int analogix_dp_config_video(struct analogix_dp_device *dp) > done_count = 0; > } > if (timeout_loop > DP_TIMEOUT_LOOP_COUNT) { > - dev_err(dp->dev, "Timeout of video streamclk ok\n"); > - return -ETIMEDOUT; > + dev_warn(dp->dev, > + "Ignoring timeout of video streamclk ok\n"); > + break; > } > > usleep_range(1000, 1001); >