From patchwork Wed Jun 24 08:43:59 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yannick FERTRE X-Patchwork-Id: 1315963 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=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=st.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=st.com header.i=@st.com header.a=rsa-sha256 header.s=STMicroelectronics header.b=VBzpbMPr; dkim-atps=neutral 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 49sGt12t3Lz9sPF for ; Wed, 24 Jun 2020 18:44:41 +1000 (AEST) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id 114C481FDC; Wed, 24 Jun 2020 10:44:34 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=pass (p=none dis=none) header.from=st.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Authentication-Results: phobos.denx.de; dkim=pass (2048-bit key; unprotected) header.d=st.com header.i=@st.com header.b="VBzpbMPr"; dkim-atps=neutral Received: by phobos.denx.de (Postfix, from userid 109) id AB8D881FE8; Wed, 24 Jun 2020 10:44:31 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de X-Spam-Level: X-Spam-Status: No, score=-2.0 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,T_SPF_HELO_TEMPERROR autolearn=ham autolearn_force=no version=3.4.2 Received: from mx07-00178001.pphosted.com (mx08-00178001.pphosted.com [91.207.212.93]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by phobos.denx.de (Postfix) with ESMTPS id B12D981EB5 for ; Wed, 24 Jun 2020 10:44:14 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=pass (p=none dis=none) header.from=st.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=yannick.fertre@st.com Received: from pps.filterd (m0046660.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 05O8h5ii015977; Wed, 24 Jun 2020 10:44:12 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=st.com; h=from : to : subject : date : message-id : mime-version : content-type; s=STMicroelectronics; bh=dYKbwyzs0Fo8kFEmtQ+Pr7+dnw6CwqrcpGETYqtnUjg=; b=VBzpbMPrAjOj1neILQPEkyO91sxEnNq8eEPWqWVaMPT40IrgmoAym0khv7qa3FXJxCMa JcA7XhGW5aJSMPzBtCwYLYBEEA4VWw4xOpwjyndrNEnb2R8HTUY6Izo/yNeC3kPVhiME MYrAyzBx7joWYQuJT2JdrxlAy3uRlocgTYkzT3IvfyCW3ln8c1uNrnvfItEFwa6/zxIB PfwQ73xwLRylLVHY1Q7S2EY4PUO7HvX+hZuK5HzX57uxRujRiAPVVORwD5SUG6MfPkHo 0AleOhZzM5skzTY52GW1wlgfDHHKg+Q3EYvHlxHoAFdmv/Fnd4ToMzPxb2jG1FFedjyv jA== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com with ESMTP id 31uuv9ahkm-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 24 Jun 2020 10:44:12 +0200 Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id C492410002A; Wed, 24 Jun 2020 10:44:11 +0200 (CEST) Received: from Webmail-eu.st.com (sfhdag6node1.st.com [10.75.127.16]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id B13952AE6C9; Wed, 24 Jun 2020 10:44:11 +0200 (CEST) Received: from localhost (10.75.127.49) by SFHDAG6NODE1.st.com (10.75.127.16) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Wed, 24 Jun 2020 10:44:11 +0200 From: Yannick Fertre To: Vikas Manocha , Benjamin Gaignard , Patrice Chotard , Philippe Cornu , Anatolij Gustschin , Simon Glass , Yannick Fertre , Patrick Delaunay , Subject: [PATCH] video: check hardware version of DSI Date: Wed, 24 Jun 2020 10:43:59 +0200 Message-ID: <20200624084359.17949-1-yannick.fertre@st.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 X-Originating-IP: [10.75.127.49] X-ClientProxiedBy: SFHDAG4NODE3.st.com (10.75.127.12) To SFHDAG6NODE1.st.com (10.75.127.16) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.216, 18.0.687 definitions=2020-06-24_04:2020-06-24, 2020-06-24 signatures=0 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.30rc1 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 0.102.2 at phobos.denx.de X-Virus-Status: Clean Check the hardware version of DSI. Versions 1.30 & 1.31 are only supported. Signed-off-by: Yannick Fertre Reviewed-by: Patrick Delaunay Reviewed-by: Philippe Cornu --- drivers/video/stm32/stm32_dsi.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/video/stm32/stm32_dsi.c b/drivers/video/stm32/stm32_dsi.c index 04796435f1..31ab8ebec7 100644 --- a/drivers/video/stm32/stm32_dsi.c +++ b/drivers/video/stm32/stm32_dsi.c @@ -271,7 +271,6 @@ static int dsi_get_lane_mbps(void *priv_data, struct display_timing *timings, u32 val; /* Update lane capabilities according to hw version */ - dsi->hw_version = dsi_read(dsi, DSI_VERSION) & VERSION; dsi->lane_min_kbps = LANE_MIN_KBPS; dsi->lane_max_kbps = LANE_MAX_KBPS; if (dsi->hw_version == HWVER_131) { @@ -475,6 +474,15 @@ static int stm32_dsi_probe(struct udevice *dev) /* Reset */ reset_deassert(&rst); + /* check hardware version */ + priv->hw_version = dsi_read(priv, DSI_VERSION) & VERSION; + if (priv->hw_version != HWVER_130 && + priv->hw_version != HWVER_131) { + dev_err(dev, "DSI version 0x%x not supported\n", priv->hw_version); + ret = -ENODEV; + goto err_clk; + } + return 0; err_clk: clk_disable(&clk);