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 856C6C6FD18 for ; Tue, 18 Apr 2023 12:34:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231607AbjDRMeQ (ORCPT ); Tue, 18 Apr 2023 08:34:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48332 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231622AbjDRMeQ (ORCPT ); Tue, 18 Apr 2023 08:34:16 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3591D212B for ; Tue, 18 Apr 2023 05:33:56 -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 170EA6324F for ; Tue, 18 Apr 2023 12:33:56 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2DAE8C433D2; Tue, 18 Apr 2023 12:33:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1681821235; bh=wzmQDfNKTv0VFuShfuXDQ3CMxFViahBXUkJvsNOXfkE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=e54QG+TDjO80H1b17khcD1CftvikEI+s+lbHi8BDCUIdeGUMT5H8Pw1Wk7vdz0XQO 7WNGts59v57ttaH7nQKnqR144/WWm80dIxZ4lQaMvTGMR38l+AL0VQD+9rv8sRJzE+ BEr8gQ7gXXOPSwaxtImQ8dNGmShVB3pYT2zrL5Lw= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Amit Pundir , Robert Foss Subject: [PATCH 5.10 049/124] drm/bridge: lt9611: Fix PLL being unable to lock Date: Tue, 18 Apr 2023 14:21:08 +0200 Message-Id: <20230418120311.622865442@linuxfoundation.org> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230418120309.539243408@linuxfoundation.org> References: <20230418120309.539243408@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 @@ -256,6 +256,7 @@ 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));