From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EFD20C43381 for ; Sun, 24 Mar 2019 19:06:43 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 8D5862133F for ; Sun, 24 Mar 2019 19:06:43 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="FnBaI+yW" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8D5862133F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=siol.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=MK1ckbag5n0GC9qrJclfX14YdCMFGLhGCQwfWwb5Kdg=; b=FnBaI+yWxCQ7GK lKb+kxYGvhyHSvd4X5r9n4I+0GSdqHSCsU/iIMB1xKVgrlXEZ6k8wWx7Hu2UAmS0E4WA4T1vUJ+JG iqLNH+3m6YAGe89pBDyNjfb800cb7IkW0xOum7m2i/XPOh9QKpBc8vbu8xHkZ9QV0XWAaAqafADvD svKJoDfk+WLyxvVoIBxpAX1gd0Zz9//nyoaW6o7KWVehz3GHsDwtjY4FU/7PquLC9X5clkYJSvr5V bi6t/HGJCCooEG1SOBKIP6/Zg/pIDCJssjC6QzgHnHPjYpFE3R4FUqEukA4UpuZhmDW/XsfbIub09 QpfFEIdsisLteSSOxPbA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1h88S3-0003g0-Fc; Sun, 24 Mar 2019 19:06:35 +0000 Received: from mailoutvs33.siol.net ([185.57.226.224] helo=mail.siol.net) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1h88Rz-0003fL-3h for linux-arm-kernel@lists.infradead.org; Sun, 24 Mar 2019 19:06:33 +0000 Received: from localhost (localhost [127.0.0.1]) by mail.siol.net (Postfix) with ESMTP id 01A40521801; Sun, 24 Mar 2019 20:06:19 +0100 (CET) X-Virus-Scanned: amavisd-new at psrvmta10.zcs-production.pri Received: from mail.siol.net ([127.0.0.1]) by localhost (psrvmta10.zcs-production.pri [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id 2-7ImW5wSYML; Sun, 24 Mar 2019 20:06:18 +0100 (CET) Received: from mail.siol.net (localhost [127.0.0.1]) by mail.siol.net (Postfix) with ESMTPS id 9BCFB520BC8; Sun, 24 Mar 2019 20:06:18 +0100 (CET) Received: from localhost.localdomain (cpe-86-58-52-202.static.triera.net [86.58.52.202]) (Authenticated sender: 031275009) by mail.siol.net (Postfix) with ESMTPSA id 7C137521801; Sun, 24 Mar 2019 20:06:16 +0100 (CET) From: Jernej Skrabec To: maxime.ripard@bootlin.com Subject: [PATCH] drm/sun4i: DW HDMI: Lower max. supported rate for H6 Date: Sun, 24 Mar 2019 20:06:09 +0100 Message-Id: <20190324190609.32721-1-jernej.skrabec@siol.net> X-Mailer: git-send-email 2.21.0 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190324_120631_311979_F241331F X-CRM114-Status: GOOD ( 10.34 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: airlied@linux.ie, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, wens@csie.org, stable@vger.kernel.org, daniel@ffwll.ch, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Currently resolutions with pixel clock higher than 340 MHz don't work with H6 HDMI controller. They just produce a blank screen. Limit maximum pixel clock rate to 340 MHz until scrambling is supported. Cc: stable@vger.kernel.org # 5.0 Fixes: 40bb9d3147b2 ("drm/sun4i: Add support for H6 DW HDMI controller") Signed-off-by: Jernej Skrabec --- drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c b/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c index caea5a9f8f1d..ba4ce576b471 100644 --- a/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c +++ b/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c @@ -48,8 +48,13 @@ static enum drm_mode_status sun8i_dw_hdmi_mode_valid_h6(struct drm_connector *connector, const struct drm_display_mode *mode) { - /* This is max for HDMI 2.0b (4K@60Hz) */ - if (mode->clock > 594000) + /* + * Controller support maximum of 594 MHz, which correlates to + * 4K@60Hz 4:4:4 or RGB. However, for frequencies greater than + * 340 MHz scrambling has to be enabled. Because scrambling is + * not yet implemented, just limit to 340 MHz for now. + */ + if (mode->clock > 340000) return MODE_CLOCK_HIGH; return MODE_OK; -- 2.21.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel