From patchwork Mon Apr 23 10:49:44 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Enric Balletbo i Serra X-Patchwork-Id: 10356785 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 E5C35601D3 for ; Mon, 23 Apr 2018 11:03:02 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D570B28471 for ; Mon, 23 Apr 2018 11:03:02 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C9DFA28609; Mon, 23 Apr 2018 11:03:02 +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=-2.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, MAILING_LIST_MULTI, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 585FC28471 for ; Mon, 23 Apr 2018 11:03:02 +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=PdEKdHBAIF58MCs7g3sY3zFnWMuaWh8x2Jw2ezBfM5I=; b=RSENk+YgpMwa+M 2CB//rcy2BtI07wAbo2SN9eCtXPJaEFplvcfNLGqcqpfTPA5rQqlHnZquRiiTCl9LZtsqPGUZlxfR 1lgcrZc3mpfusclwt+gX0KrLk+SV6w2huFDoHZTz6u9XZXYvAh4yMyXwqZo6ZQsFAG3O82efmhOHb lW4Pv5LsvR243rDVTP9l5/yFzNkNAx1hq9LPRGeoaZYXGNNaG2tOyu/EKNALaBv7Cy0IXDhfXlG5O FrhzBEVdpli16GmcFjKK3zP4jIH2RyTq2sBYVQ5fZVAkxniQC4Fvsmt4FKDMidGNYYq1foTWlJgK7 d1PBIi/0CJc8i/TdTh8w==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1fAZFI-0006sd-Ky; Mon, 23 Apr 2018 11:02:56 +0000 Received: from bhuna.collabora.co.uk ([2a00:1098:0:82:1000:25:2eeb:e3e3]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1fAZ3U-0007Sa-EU; Mon, 23 Apr 2018 10:50:51 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: eballetbo) with ESMTPSA id 8A1CF27C9E3 From: Enric Balletbo i Serra To: architt@codeaurora.org, inki.dae@samsung.com, thierry.reding@gmail.com, hjc@rock-chips.com, seanpaul@chromium.org, airlied@linux.ie, tfiga@chromium.org, heiko@sntech.de Subject: [RESEND PATCH v6 08/27] drm/bridge: analogix_dp: Extend hpd check time to 100ms Date: Mon, 23 Apr 2018 12:49:44 +0200 Message-Id: <20180423105003.9004-9-enric.balletbo@collabora.com> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180423105003.9004-1-enric.balletbo@collabora.com> References: <20180423105003.9004-1-enric.balletbo@collabora.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20180423_035044_660981_DE521DEE X-CRM114-Status: GOOD ( 10.68 ) 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: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, a.hajda@samsung.com, Laurent.pinchart@ideasonboard.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, orjan.eide@arm.com, wxt@rock-chips.com, jeffy.chen@rock-chips.com, =?UTF-8?q?St=C3=A9phane=20Marchesin?= , linux-arm-kernel@lists.infradead.org, wzz@rock-chips.com, hl@rock-chips.com, jingoohan1@gmail.com, sw0312.kim@samsung.com, dianders@chromium.org, kyungmin.park@samsung.com, Enric Balletbo i Serra , kuankuan.y@gmail.com, hshi@chromium.org 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 Signed-off-by: Enric Balletbo i Serra Tested-by: Marek Szyprowski Reviewed-by: Archit Taneja --- 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 5957e2338071..1f4f34149019 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); } /*