From patchwork Tue Jan 21 09:46:55 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomi Valkeinen X-Patchwork-Id: 11343257 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id BC029924 for ; Tue, 21 Jan 2020 09:47:16 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 9A8542253D for ; Tue, 21 Jan 2020 09:47:16 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=ti.com header.i=@ti.com header.b="ZBUktWpL" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9A8542253D Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=ti.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id E64506EAA5; Tue, 21 Jan 2020 09:47:14 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from lelv0143.ext.ti.com (lelv0143.ext.ti.com [198.47.23.248]) by gabe.freedesktop.org (Postfix) with ESMTPS id DB29E6EAA5 for ; Tue, 21 Jan 2020 09:47:13 +0000 (UTC) Received: from fllv0034.itg.ti.com ([10.64.40.246]) by lelv0143.ext.ti.com (8.15.2/8.15.2) with ESMTP id 00L9lBCE064903; Tue, 21 Jan 2020 03:47:11 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1579600031; bh=XmNuQ+r6vNizXKdvvQytp3gbh3c3vUAbh3atkxIFtdA=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=ZBUktWpLhySYFmIUR6CM+Fi0JlMJcxfVlbGpy+63hgElYLw0O69+BwGFbT5WC1MAt zlFRocHdruIwLHbU9easnUTGU+P65NWPLXL7AZ54f9JKVoT4a3CDhjlEZbDABi4rYm ddx1j/k8uQnx3kmfaRuqb7fG5Oy/MzHi+7DGnPF4= Received: from DFLE104.ent.ti.com (dfle104.ent.ti.com [10.64.6.25]) by fllv0034.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 00L9lBI8048097 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 21 Jan 2020 03:47:11 -0600 Received: from DFLE102.ent.ti.com (10.64.6.23) by DFLE104.ent.ti.com (10.64.6.25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1847.3; Tue, 21 Jan 2020 03:47:11 -0600 Received: from fllv0039.itg.ti.com (10.64.41.19) by DFLE102.ent.ti.com (10.64.6.23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1847.3 via Frontend Transport; Tue, 21 Jan 2020 03:47:11 -0600 Received: from deskari.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by fllv0039.itg.ti.com (8.15.2/8.15.2) with ESMTP id 00L9l9HV039517; Tue, 21 Jan 2020 03:47:09 -0600 From: Tomi Valkeinen To: , Laurent Pinchart , Andrzej Hajda , Neil Armstrong Subject: [PATCH v2] drm/bridge: tfp410: add pclk limits Date: Tue, 21 Jan 2020 11:46:55 +0200 Message-ID: <20200121094655.9092-1-tomi.valkeinen@ti.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200113134528.9851-1-tomi.valkeinen@ti.com> References: <20200113134528.9851-1-tomi.valkeinen@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Tomi Valkeinen Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Add pixel clock limits to the driver as per TFP410 datasheet: min 25MHz, max 165MHz. Signed-off-by: Tomi Valkeinen Reviewed-by: Andrzej Hajda Reviewed-by: Laurent Pinchart --- drivers/gpu/drm/bridge/ti-tfp410.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/gpu/drm/bridge/ti-tfp410.c b/drivers/gpu/drm/bridge/ti-tfp410.c index 6f6d6d1e60ae..108e8cd7ab68 100644 --- a/drivers/gpu/drm/bridge/ti-tfp410.c +++ b/drivers/gpu/drm/bridge/ti-tfp410.c @@ -167,10 +167,23 @@ static void tfp410_disable(struct drm_bridge *bridge) gpiod_set_value_cansleep(dvi->powerdown, 1); } +static enum drm_mode_status tfp410_mode_valid(struct drm_bridge *bridge, + const struct drm_display_mode *mode) +{ + if (mode->clock < 25000) + return MODE_CLOCK_LOW; + + if (mode->clock > 165000) + return MODE_CLOCK_HIGH; + + return MODE_OK; +} + static const struct drm_bridge_funcs tfp410_bridge_funcs = { .attach = tfp410_attach, .enable = tfp410_enable, .disable = tfp410_disable, + .mode_valid = tfp410_mode_valid, }; static void tfp410_hpd_work_func(struct work_struct *work)