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Tue, 23 Jan 2018 23:18:44 -0500 Received: from mail-sn1nam02on0101.outbound.protection.outlook.com ([104.47.36.101]:14584 "EHLO NAM02-SN1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S932410AbeAXESk (ORCPT ); Tue, 23 Jan 2018 23:18:40 -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 4.9 41/55] drm/bridge: tc358767: filter out too high modes Thread-Topic: [PATCH AUTOSEL for 4.9 41/55] drm/bridge: tc358767: filter out too high modes Thread-Index: AQHTlMoE0yYYTnHDHU6CN7+jagTPDQ== Date: Wed, 24 Jan 2018 04:15:50 +0000 Message-ID: <20180124041521.32223-41-alexander.levin@microsoft.com> References: <20180124041521.32223-1-alexander.levin@microsoft.com> In-Reply-To: <20180124041521.32223-1-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;DM5PR2101MB0933;7:curKhnYI9goGz3h74LSUNALjO+Vp5+b1xCwFXgdAbRaP4cejJ8aFpEtt0OhVKzvX8+LiqRTGlgBDj/DX8uScDZ3wBFcoa4ZvEia/WCSrcaraJUlf5+NjvC7eb2eUd5Ffa30rooNaO9hHIHtVU6TUKmmYaDXmpEz0+Oqs3ZIwyCxYXtAjkAMvZbx3aUCeMtdAX9EY90mFGlk3oAux7ejhpHEHLufCrBPoXoKlD18X2H90+Lg7EwLjfMqJ9ZFERAkN x-ms-office365-filtering-correlation-id: 372e5f53-0192-452c-ff83-08d562e18a13 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(5600026)(4604075)(3008032)(48565401081)(4534165)(4627221)(201703031133081)(201702281549075)(2017052603307)(7193020);SRVR:DM5PR2101MB0933; 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authentication-results: spf=none (sender IP is ) smtp.mailfrom=Alexander.Levin@microsoft.com; x-microsoft-antispam-message-info: grs2ZUmcCvEda+tt9XLuIM6L5yQRUYL6gqW3uKII8aqyEsMAVqCbkTrUdFQUhxypDX2hdBpMlo0ny9t1O7QdGQ== 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: 372e5f53-0192-452c-ff83-08d562e18a13 X-MS-Exchange-CrossTenant-originalarrivaltime: 24 Jan 2018 04:15:50.8921 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR2101MB0933 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 14b4e58f727f..97087f962363 100644 --- a/drivers/gpu/drm/bridge/tc358767.c +++ b/drivers/gpu/drm/bridge/tc358767.c @@ -1109,7 +1109,10 @@ 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