From patchwork Tue Feb 13 15:28:27 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yannick FERTRE X-Patchwork-Id: 872916 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=none (mailfrom) smtp.mailfrom=lists.denx.de (client-ip=81.169.180.215; helo=lists.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=) Received: from lists.denx.de (dione.denx.de [81.169.180.215]) by ozlabs.org (Postfix) with ESMTP id 3zgmhS4CmRz9t3F for ; Wed, 14 Feb 2018 02:30:48 +1100 (AEDT) Received: by lists.denx.de (Postfix, from userid 105) id 58A4EC21FD2; Tue, 13 Feb 2018 15:30:31 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on lists.denx.de X-Spam-Level: X-Spam-Status: No, score=0.0 required=5.0 tests=none autolearn=unavailable autolearn_force=no version=3.4.0 Received: from lists.denx.de (localhost [IPv6:::1]) by lists.denx.de (Postfix) with ESMTP id 47BC3C21F69; Tue, 13 Feb 2018 15:30:04 +0000 (UTC) Received: by lists.denx.de (Postfix, from userid 105) id 9EF8AC21DD7; Tue, 13 Feb 2018 15:28:44 +0000 (UTC) Received: from mx07-00178001.pphosted.com (mx08-00178001.pphosted.com [91.207.212.93]) by lists.denx.de (Postfix) with ESMTPS id 52BF5C21D65 for ; Tue, 13 Feb 2018 15:28:44 +0000 (UTC) Received: from pps.filterd (m0046660.ppops.net [127.0.0.1]) by mx08-.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id w1DFJPfW016238; Tue, 13 Feb 2018 16:28:43 +0100 Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx08-00178001.pphosted.com with ESMTP id 2g22rywefb-1 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT); Tue, 13 Feb 2018 16:28:43 +0100 Received: from zeta.dmz-eu.st.com (zeta.dmz-eu.st.com [164.129.230.9]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 7B1043A; Tue, 13 Feb 2018 15:28:42 +0000 (GMT) Received: from Webmail-eu.st.com (Safex1hubcas21.st.com [10.75.90.44]) by zeta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 686A24F04; Tue, 13 Feb 2018 15:28:42 +0000 (GMT) Received: from SAFEX1HUBCAS22.st.com (10.75.90.92) by SAFEX1HUBCAS21.st.com (10.75.90.44) with Microsoft SMTP Server (TLS) id 14.3.361.1; Tue, 13 Feb 2018 16:28:42 +0100 Received: from localhost (10.201.23.68) by Webmail-ga.st.com (10.75.90.48) with Microsoft SMTP Server (TLS) id 14.3.352.0; Tue, 13 Feb 2018 16:28:42 +0100 From: yannick fertre To: Yannick Fertre , Benjamin Gaignard , Philippe CORNU , "Patrice CHOTARD" , Anatolij Gustschin Date: Tue, 13 Feb 2018 16:28:27 +0100 Message-ID: <1518535713-787-2-git-send-email-yannick.fertre@st.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1518535713-787-1-git-send-email-yannick.fertre@st.com> References: <1518535713-787-1-git-send-email-yannick.fertre@st.com> MIME-Version: 1.0 X-Originating-IP: [10.201.23.68] X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2018-02-13_08:, , signatures=0 X-Mailman-Approved-At: Tue, 13 Feb 2018 15:30:00 +0000 Cc: Andrzej Hajda , u-boot@lists.denx.de Subject: [U-Boot] [PATCH v1 1/7] video: stm32: stm32_ltdc: add reset X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.18 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" Add reset of LTDC display controller. Signed-off-by: yannick fertre --- drivers/video/stm32/stm32_ltdc.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/video/stm32/stm32_ltdc.c b/drivers/video/stm32/stm32_ltdc.c index b417ac2..d8784f1 100644 --- a/drivers/video/stm32/stm32_ltdc.c +++ b/drivers/video/stm32/stm32_ltdc.c @@ -11,6 +11,7 @@ #include #include #include +#include #include #include #include @@ -302,6 +303,7 @@ static int stm32_ltdc_probe(struct udevice *dev) struct stm32_ltdc_priv *priv = dev_get_priv(dev); struct udevice *panel; struct clk pclk, pxclk; + struct reset_ctl rst; int ret; priv->regs = (void *)dev_read_addr(dev); @@ -316,6 +318,15 @@ static int stm32_ltdc_probe(struct udevice *dev) return ret; } + ret = reset_get_by_index(dev, 0, &rst); + if (ret) { + debug("%s: missing ltdc hardware reset\n", __func__); + return -ENODEV; + } + + /* Reset */ + reset_deassert(&rst); + ret = panel_enable_backlight(panel); if (ret) { debug("%s: panel %s enable backlight error %d\n",