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Tue, 23 Jan 2018 23:49:20 -0500 Received: from mail-by2nam03on0132.outbound.protection.outlook.com ([104.47.42.132]:45413 "EHLO NAM03-BY2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S932508AbeAXEQH (ORCPT ); Tue, 23 Jan 2018 23:16:07 -0500 From: Sasha Levin To: "linux-kernel@vger.kernel.org" , "stable@vger.kernel.org" CC: Andrey Gusakov , Andrzej Hajda , Sasha Levin Subject: [PATCH AUTOSEL for 4.14 081/100] drm/bridge: tc358767: filter out too high modes Thread-Topic: [PATCH AUTOSEL for 4.14 081/100] drm/bridge: tc358767: filter out too high modes Thread-Index: AQHTlMnq51T2leIeiU+ao9RFMmAVuA== Date: Wed, 24 Jan 2018 04:15:07 +0000 Message-ID: <20180124041414.32065-81-alexander.levin@microsoft.com> References: <20180124041414.32065-1-alexander.levin@microsoft.com> In-Reply-To: <20180124041414.32065-1-alexander.levin@microsoft.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [52.168.54.252] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;DM5PR2101MB1078;7:sRJS2PWWoNvpVAGOn6ErZCj0e8OEyOSwxHnm2b18DvzrMsXLs6UQnVoir3pYv74Vc8+TJ5SbJA87M+7AnmIrthJhqYdgX5pNpdVdzImYbYCD8wGrtd97yix705F8eAihXjsyishBq5XW4lBKr2CFJkgy61YCUVZgCR7Y6YLxCy/UePN78b+UFzZknP7Hu8ae4vhiK/XlK8BhyMf2DgAYQY29jFLFGjgwDKtB9kc0tEZ+SIu8eYpKOXO9a73Icspj x-ms-office365-filtering-correlation-id: 19c79a42-f8c5-4fa6-169e-08d562e12e19 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(5600026)(4604075)(3008032)(4534165)(4627221)(201703031133081)(201702281549075)(48565401081)(2017052603307)(7193020);SRVR:DM5PR2101MB1078; 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authentication-results: spf=none (sender IP is ) smtp.mailfrom=Alexander.Levin@microsoft.com; x-microsoft-antispam-message-info: LWSGyRhRiyD0i+07aBsfhdjmQr0TyvoW1kSxKLMxySYMh7RVUOy6zhNVuBUQY4S69f8/32M4b/8o++79azXMDg== spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-Network-Message-Id: 19c79a42-f8c5-4fa6-169e-08d562e12e19 X-MS-Exchange-CrossTenant-originalarrivaltime: 24 Jan 2018 04:15:07.1551 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR2101MB1078 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: From: Andrey Gusakov [ Upstream commit 99fc8e963a4c0203dba26a77cf737db6081bca14 ] Pixel clock limitation for DPI is 154 MHz. Do not accept modes with higher pixel clock rate. Reviewed-by: Andrzej Hajda Signed-off-by: Andrey Gusakov Signed-off-by: Andrzej Hajda Link: https://patchwork.freedesktop.org/patch/msgid/1510073785-16108-3-git-= send-email-andrey.gusakov@cogentembedded.com Signed-off-by: Sasha Levin --- drivers/gpu/drm/bridge/tc358767.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc3= 58767.c index e1996dbfb0a1..e571b5e29ae7 100644 --- a/drivers/gpu/drm/bridge/tc358767.c +++ b/drivers/gpu/drm/bridge/tc358767.c @@ -1103,7 +1103,10 @@ static bool tc_bridge_mode_fixup(struct drm_bridge *= bridge, static int tc_connector_mode_valid(struct drm_connector *connector, struct drm_display_mode *mode) { - /* Accept any mode */ + /* DPI interface clock limitation: upto 154 MHz */ + if (mode->clock > 154000) + return MODE_CLOCK_HIGH; + return MODE_OK; } =20 --=20 2.11.0