From patchwork Fri Mar 5 10:27:53 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Arnaud Patard (Rtp)" X-Patchwork-Id: 1447762 X-Patchwork-Delegate: agust@denx.de Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de (client-ip=85.214.62.61; helo=phobos.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=) Received: from phobos.denx.de (phobos.denx.de [85.214.62.61]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 4DsPLx35qQz9sRR for ; Fri, 5 Mar 2021 21:37:29 +1100 (AEDT) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id CA1E082785; Fri, 5 Mar 2021 11:36:16 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=fail (p=none dis=none) header.from=rtp-net.org Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Received: by phobos.denx.de (Postfix, from userid 109) id 67A538204A; Fri, 5 Mar 2021 11:35:54 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,SPF_HELO_NONE autolearn=ham autolearn_force=no version=3.4.2 Received: from lechat.rtp-net.org (lechat.rtp-net.org [51.15.165.164]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by phobos.denx.de (Postfix) with ESMTPS id 4B7598236C for ; Fri, 5 Mar 2021 11:35:44 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=pass (p=none dis=none) header.from=rtp-net.org Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=arnaud.patard@rtp-net.org Received: by lechat.rtp-net.org (Postfix, from userid 1000) id F37E5180A23; Fri, 5 Mar 2021 11:35:41 +0100 (CET) Message-ID: <20210305103307.395781510@rtp-net.org> User-Agent: quilt/0.66 Date: Fri, 05 Mar 2021 11:27:53 +0100 From: Arnaud Patard (Rtp) To: u-boot@lists.denx.de Cc: Kever Yang , Anatolij Gustschin , Philipp Tomsich , Peter Robinson , Samuel Dionne-Riel , Alper Nebi Yasak , Arnaud Patard Subject: [patch v4 8/9] rockchip: video: edp: Add missing reset support References: <20210305102745.078091129@rtp-net.org> MIME-Version: 1.0 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.34 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.102.4 at phobos.denx.de X-Virus-Status: Clean In order to ensure that the eDP registers are in correct state, add missing support for the eDP reset lines found in the device-tree. Signed-off-by: Arnaud Patard Tested-by: Peter Robinson Index: u-boot/drivers/video/rockchip/rk_edp.c =================================================================== --- u-boot.orig/drivers/video/rockchip/rk_edp.c +++ u-boot/drivers/video/rockchip/rk_edp.c @@ -8,11 +8,13 @@ #include #include #include +#include #include #include #include #include #include +#include #include #include #include @@ -1053,6 +1055,7 @@ static int rk_edp_probe(struct udevice * struct rk_edp_priv *priv = dev_get_priv(dev); struct rk3288_edp *regs = priv->regs; struct rockchip_dp_data *edp_data = (struct rockchip_dp_data *)dev_get_driver_data(dev); + struct reset_ctl dp_rst; struct clk clk; int ret; @@ -1065,6 +1068,25 @@ static int rk_edp_probe(struct udevice * return ret; } + ret = reset_get_by_name(dev, "dp", &dp_rst); + if (ret) { + dev_err(dev, "failed to get dp reset (ret=%d)\n", ret); + return ret; + } + + ret = reset_assert(&dp_rst); + if (ret) { + dev_err(dev, "failed to assert dp reset (ret=%d)\n", ret); + return ret; + } + udelay(20); + + ret = reset_deassert(&dp_rst); + if (ret) { + dev_err(dev, "failed to deassert dp reset (ret=%d)\n", ret); + return ret; + } + int vop_id = uc_plat->source_id; debug("%s, uc_plat=%p, vop_id=%u\n", __func__, uc_plat, vop_id);