From patchwork Fri Jan 26 13:16:47 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Thierry Escande X-Patchwork-Id: 10185653 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 5BF91601D5 for ; Fri, 26 Jan 2018 13:19:08 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4B177287A5 for ; Fri, 26 Jan 2018 13:19:08 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3FA5E2911B; Fri, 26 Jan 2018 13:19:08 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [65.50.211.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id EE027287A5 for ; Fri, 26 Jan 2018 13:19:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=QX5geXRMbXvSRZr+ey5i1b80buQsWVPR6DldVntjVTc=; b=RbNj/adq449DEY eVqMhHR+wJ2sN5zXk6UzSseNVw9oIhhN/pQwCsnkGrgXVPJGPf3lGD7knILC7lpS6gJ2QPbs1EpUn QrC/QI1dAE/6MTlMbeJVsoKI7Uv47ycHnkIoWvCJS/USI8rVfGfH0ce27sWR00LBoc92/mpYOId4x IBNo2NY6yTIJg6UQYXG8zgqjl5NLkHZSkw0KDD9JA/gW21I0zc6ki4D95jmdWB6xoIprUvSN0eHH+ CuLICieywX603VT0YEvRwK2hDNbg1hEsv2YAdqSjPWKaI9n1ujFseZudZpAmb/kH55NpgO4FgVxHq dU3N0DHUi/1n9z+wKaTw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.89 #1 (Red Hat Linux)) id 1ef3uN-00039z-60; Fri, 26 Jan 2018 13:19:07 +0000 Received: from bhuna.collabora.co.uk ([46.235.227.227]) by bombadil.infradead.org with esmtps (Exim 4.89 #1 (Red Hat Linux)) id 1ef3u6-0002w1-Ru for linux-rockchip@lists.infradead.org; Fri, 26 Jan 2018 13:18:56 +0000 Received: from localhost.localdomain (unknown [IPv6:2a01:e35:8a7e:4790:a8d7:ca4:7b4f:7f87]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: tescande) by bhuna.collabora.co.uk (Postfix) with ESMTPSA id 65505274807; Fri, 26 Jan 2018 13:17:51 +0000 (GMT) From: Thierry Escande To: Archit Taneja , Inki Dae , Thierry Reding , Sandy Huang , Sean Paul , David Airlie , Tomasz Figa Subject: [PATCH v2 20/43] drm/bridge: analogix_dp: Extend hpd check time to 100ms Date: Fri, 26 Jan 2018 14:16:47 +0100 Message-Id: <20180126131710.7622-21-thierry.escande@collabora.com> X-Mailer: git-send-email 2.14.1 In-Reply-To: <20180126131710.7622-1-thierry.escande@collabora.com> References: <20180126131710.7622-1-thierry.escande@collabora.com> MIME-Version: 1.0 Content-Transfert-Encoding: 8bit X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Zain Wang , Lin Huang , Douglas Anderson , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org, Yakir Yang , =?UTF-8?q?=C3=98rjan=20Eide?= , Mark Yao , Haixia Shi Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+patchwork-linux-rockchip=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP From: Lin Huang There was a 1ms delay to detect the hpd signal, which is too short to detect a short pulse. This patch extends this delay to 100ms. Cc: Stéphane Marchesin Cc: 征增 王 Signed-off-by: Lin Huang Signed-off-by: Sean Paul Signed-off-by: Thierry Escande Reviewed-by: Andrzej Hajda --- drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c index fa4ef28e286f..9df92dc54dbe 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c @@ -76,7 +76,7 @@ static int analogix_dp_detect_hpd(struct analogix_dp_device *dp) return 0; timeout_loop++; - usleep_range(10, 11); + usleep_range(1000, 1100); } /*