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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id F1901C7619A for ; Wed, 12 Apr 2023 08:46:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231165AbjDLIq4 (ORCPT ); Wed, 12 Apr 2023 04:46:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60258 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229930AbjDLIqv (ORCPT ); Wed, 12 Apr 2023 04:46:51 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1EF237AB3 for ; Wed, 12 Apr 2023 01:46:31 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 8FC60630F4 for ; Wed, 12 Apr 2023 08:46:27 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A075AC433EF; Wed, 12 Apr 2023 08:46:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1681289187; bh=rcPR1yzzx+NFOP4b57vj9H7yNsBfGrlEDO8tBhP58zQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=PydIZ4R6rADrI9SCAjLt6OIwRcycv3sJuspW1b9+zCS5hdhlclBsYShhXAKiO7fzc R6CvX3UDc3WES9LVcMSutKWdBFVU8hkruupCyzSKnPD2jEEYwWsgxMPqAFSfn8MA1C Jv2611hcHUkrtRb6JVG+0vs+xilFIEjIo8Lv+D+g= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Amit Pundir , Robert Foss Subject: [PATCH 6.1 148/164] drm/bridge: lt9611: Fix PLL being unable to lock Date: Wed, 12 Apr 2023 10:34:30 +0200 Message-Id: <20230412082842.899008389@linuxfoundation.org> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230412082836.695875037@linuxfoundation.org> References: <20230412082836.695875037@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Robert Foss commit 2a9df204be0bbb896e087f00b9ee3fc559d5a608 upstream. This fixes PLL being unable to lock, and is derived from an equivalent downstream commit. Available LT9611 documentation does not list this register, neither does LT9611UXC (which is a different chip). This commit has been confirmed to fix HDMI output on DragonBoard 845c. Suggested-by: Amit Pundir Reviewed-by: Amit Pundir Signed-off-by: Robert Foss Link: https://patchwork.freedesktop.org/patch/msgid/20221213150304.4189760-1-robert.foss@linaro.org Signed-off-by: Amit Pundir Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/bridge/lontium-lt9611.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/gpu/drm/bridge/lontium-lt9611.c +++ b/drivers/gpu/drm/bridge/lontium-lt9611.c @@ -258,6 +258,7 @@ static int lt9611_pll_setup(struct lt961 { 0x8126, 0x55 }, { 0x8127, 0x66 }, { 0x8128, 0x88 }, + { 0x812a, 0x20 }, }; regmap_multi_reg_write(lt9611->regmap, reg_cfg, ARRAY_SIZE(reg_cfg));