From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B6876C46CA1 for ; Mon, 18 Sep 2023 13:01:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241998AbjIRNAp (ORCPT ); Mon, 18 Sep 2023 09:00:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40042 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242096AbjIRNAf (ORCPT ); Mon, 18 Sep 2023 09:00:35 -0400 Received: from out-225.mta0.migadu.com (out-225.mta0.migadu.com [IPv6:2001:41d0:1004:224b::e1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8D79DCC7 for ; Mon, 18 Sep 2023 05:59:42 -0700 (PDT) X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=jookia.org; s=key1; t=1695041980; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=QEybRG/z/QiYL8x5ls+wYPU1myIjvupP8IAsRIKh5xg=; b=FEW+MOpwp9cGHz48fZOCAK7zxLfyFA4CUAFrB6PZomcNlEIGsGhUu9YN+yjVZsm6WpQWNR DPyIrvPVPIkHZ81tGtQ/L+knTLJ0LPoF3thlOez1lfZ4zx3z+WQ4PcwvprhmkX53U9r4cG 6vdfCR8dAmEptpSNt3V8vFaaFd+cZ5a1V4F6+kbDS0g902b/8m4+nbiuqCDroZnmo0v5CC tfdFZMV3a9qM49QY0+4lEVVLCdfPdtpB/51bKPdu41g9mUNL1HsxBfMsh+XxcNE4/jKYhv yf4uBAXssBeKi2GcMBz7NmP8jEwSMPLU4ZX6qa8aOI+KkH5YTrkjAZXuPSlAuw== From: John Watts To: dri-devel@lists.freedesktop.org Cc: Neil Armstrong , Jessica Zhang , Sam Ravnborg , David Airlie , Daniel Vetter , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Shawn Guo , Heiko Stuebner , Chris Morgan , Jagan Teki , John Watts , Paul Cercueil , Christophe Branchereau , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [RFC PATCH v2 3/9] drm/panel: nv3052c: Sleep for 150ms after reset Date: Mon, 18 Sep 2023 22:58:47 +1000 Message-ID: <20230918125853.2249187-4-contact@jookia.org> In-Reply-To: <20230918125853.2249187-1-contact@jookia.org> References: <20230918125853.2249187-1-contact@jookia.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The current code waits after resets for 5 to 20 milliseconds. This is appropriate when resetting a sleeping panel, but an awake panel requires at least 120ms of waiting. Sleep for 150ms so the panel always completes it reset properly. Signed-off-by: John Watts --- drivers/gpu/drm/panel/panel-newvision-nv3052c.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/panel/panel-newvision-nv3052c.c b/drivers/gpu/drm/panel/panel-newvision-nv3052c.c index 90dea21f9856..2526b123b1f5 100644 --- a/drivers/gpu/drm/panel/panel-newvision-nv3052c.c +++ b/drivers/gpu/drm/panel/panel-newvision-nv3052c.c @@ -258,7 +258,7 @@ static int nv3052c_prepare(struct drm_panel *panel) gpiod_set_value_cansleep(priv->reset_gpio, 1); usleep_range(10, 1000); gpiod_set_value_cansleep(priv->reset_gpio, 0); - usleep_range(5000, 20000); + msleep(150); for (i = 0; i < ARRAY_SIZE(nv3052c_panel_regs); i++) { err = mipi_dbi_command(dbi, nv3052c_panel_regs[i].cmd, -- 2.42.0