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 E7489C433F5 for ; Fri, 3 Dec 2021 00:59:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346051AbhLCBC4 (ORCPT ); Thu, 2 Dec 2021 20:02:56 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38970 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344077AbhLCBCy (ORCPT ); Thu, 2 Dec 2021 20:02:54 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 01D66C06174A; Thu, 2 Dec 2021 16:59:31 -0800 (PST) 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 ams.source.kernel.org (Postfix) with ESMTPS id B9E1EB82025; Fri, 3 Dec 2021 00:59:29 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 52BEDC00446; Fri, 3 Dec 2021 00:59:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1638493168; bh=gAszAJGGHye2RgWWyEPNSetu+idKR1JbBRTAAgjo8Bk=; h=In-Reply-To:References:Subject:From:Cc:To:Date:From; b=rHPfzz0Ngj45MaTUdSw87sLOh6NZ6A922ZLOMQtP/7C0N6o6b9hTcZ7HN15YqRpqI sGCwNZo/2LbqPg/rn4c1Ho7uyLeHrawQHHtcJ/+mk32kdhqN5EbynXNf/bWN12Mf6K NNuNX1V8T7Ip217EQ3WdcIpVv92FkH+G8cjYLOYHwcHs3Yy88/RV1ItRuWnvdCaLd6 EQhuAIYeI6lFTGd34+k2QydiSv4s5uSzlhfsaSXk3lf+C8NIJcGiVgJwR3eE79xHiW GwTfRuzrcAcq1g2j8rzDAoI0Q0BLb4UxVudOBaGwIj/WiHLli9nuzoEJRvdJ6x7TDa /MbNv6nY2eXsA== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable In-Reply-To: <20211123162508.153711-1-bjorn.andersson@linaro.org> References: <20211123162508.153711-1-bjorn.andersson@linaro.org> Subject: Re: [PATCH v2] clk: qcom: clk-alpha-pll: Don't reconfigure running Trion From: Stephen Boyd Cc: Robert Foss , linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org To: Bjorn Andersson , Michael Turquette , Taniya Das , Vinod Koul Date: Thu, 02 Dec 2021 16:59:27 -0800 User-Agent: alot/0.9.1 Message-Id: <20211203005928.52BEDC00446@smtp.kernel.org> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Quoting Bjorn Andersson (2021-11-23 08:25:08) > In the event that the bootloader has configured the Trion PLL as source > for the display clocks, e.g. for the continuous splashscreen, then there > will also be RCGs that are clocked by this instance. >=20 > Reconfiguring, and in particular disabling the output of, the PLL will > cause issues for these downstream RCGs and has been shown to prevent > them from being re-parented. >=20 > Follow downstream and skip configuration if it's determined that the PLL > is already running. >=20 > Fixes: 59128c20a6a9 ("clk: qcom: clk-alpha-pll: Add support for controlli= ng Lucid PLLs") > Signed-off-by: Bjorn Andersson > --- Applied to clk-fixes