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=-3.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_NEOMUTT 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 76CC9C04AB4 for ; Thu, 16 May 2019 08:31:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E833C20848 for ; Thu, 16 May 2019 08:31:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726717AbfEPIbN (ORCPT ); Thu, 16 May 2019 04:31:13 -0400 Received: from relay7-d.mail.gandi.net ([217.70.183.200]:53567 "EHLO relay7-d.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726363AbfEPIbM (ORCPT ); Thu, 16 May 2019 04:31:12 -0400 X-Originating-IP: 80.215.246.107 Received: from localhost (unknown [80.215.246.107]) (Authenticated sender: maxime.ripard@bootlin.com) by relay7-d.mail.gandi.net (Postfix) with ESMTPSA id 6532D20003; Thu, 16 May 2019 08:31:05 +0000 (UTC) Date: Thu, 16 May 2019 10:31:04 +0200 From: Maxime Ripard To: Jernej Skrabec Cc: wens@csie.org, airlied@linux.ie, daniel@ffwll.ch, dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-sunxi@googlegroups.com Subject: Re: [PATCH 0/2] drm/sun4i: Fix sun8i HDMI PHY initialization Message-ID: <20190516083104.rr2ewg3dd4aej67b@flea> References: <20190514204337.11068-1-jernej.skrabec@siol.net> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="nxc66wpttvnorf5q" Content-Disposition: inline In-Reply-To: <20190514204337.11068-1-jernej.skrabec@siol.net> User-Agent: NeoMutt/20180716 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --nxc66wpttvnorf5q Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Tue, May 14, 2019 at 10:43:35PM +0200, Jernej Skrabec wrote: > I received a report that 4K resolution doesn't work if U-Boot video > driver is disabled. It turns out that HDMI PHY clock driver was > initialized prematurely, before reset line was deasserted and clocks > enabled. U-Boot video driver masked the issue because it set pixel > clock correctly. > > In the process of researching the bug, I also found out that few bits > in HDMI PHY registers were not set correctly. While there is no > noticeable change (4K resolution works with both settings), I've > added fix anyway, to be conformant with vendor documentation. Applied both, thanks Maxime -- Maxime Ripard, Bootlin Embedded Linux and Kernel engineering https://bootlin.com --nxc66wpttvnorf5q Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQRcEzekXsqa64kGDp7j7w1vZxhRxQUCXN0fyAAKCRDj7w1vZxhR xUAXAP9xICklXvpieTeqdcZC4XE/+a2QALTSkxog1dIwU2z9hgEA9W1tdHngDaMj jYInZNsuhpQY0H7zxkIQTeX7MeX2Ogs= =TN7Y -----END PGP SIGNATURE----- --nxc66wpttvnorf5q--