From patchwork Thu Apr 18 13:41:32 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Abel Vesa X-Patchwork-Id: 790762 Received: from mail-wm1-f45.google.com (mail-wm1-f45.google.com [209.85.128.45]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 53C89160790 for ; Thu, 18 Apr 2024 13:41:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.45 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713447703; cv=none; b=lRJgC5Lpy3PqGnyaMQvauWHGDbFAT5dNv/n+zJ7XKhUYfcNgsrJkE2ZU3MYg8Cpxc5qoj/5aeSw/S35ZW0sjK35XEh7+PyKDseO9LnbFUrwW0kByUBGfuyirg1P5wxVYT0Vx/8mDBPX31H31HwkVqQ46LlHB9ihXVO512yVr9Ss= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713447703; c=relaxed/simple; bh=8MzW49dMcgqrWLiS7mwIpQOpeo1dbVcEjhaJQWBw44Y=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:To:Cc; b=b0R1Pl3nztHBQnUNdMd/9zEgl6fqpclquo7vhPqblQzvsoNzjvSqN38XKN91gjbBNP0bfNUOQLddzMc2NTbh1ECSbGS+T0nZv9i3ZlbfAFoLaGdyY7dYOG1Bz5TACoBBmOuqpouoE3DSwrrdL56q1dVjAi10WJQJtCXv239JZ94= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org; spf=pass smtp.mailfrom=linaro.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b=xlJnhtHj; arc=none smtp.client-ip=209.85.128.45 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linaro.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="xlJnhtHj" Received: by mail-wm1-f45.google.com with SMTP id 5b1f17b1804b1-4187d5f0812so7340395e9.3 for ; Thu, 18 Apr 2024 06:41:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1713447699; x=1714052499; darn=vger.kernel.org; h=cc:to:message-id:content-transfer-encoding:mime-version:subject :date:from:from:to:cc:subject:date:message-id:reply-to; bh=Z8Q8PkKj9VfKJC1mpdjogpO5/6dV0GWIjsKclaHyBuY=; b=xlJnhtHja0Dclh8taVACp9PDwUc0/kUUiCKi3YaA6+zI5SCZYOHP+iLHmyLiyucS/U fChC2MrxKZOGwjyAoIZtaRMcsuweoPcEgE6t6RA/PRsGYY5me49gSEgPbgZLcSrQciFn muEUAwVQ7XKDmES9E3BfM3DXNfWlokYd/lpMM3VLebErXpd3QXW+s7yQXtST70f3Htxv EFhUIrsKA3leJlI7LHccQ/bGnnHyJs+ZMJLZrgHWc/4/AudJ8FksehC7JjGDaPXUxqRC qGHiODxKZEl7R/NsvxBPa1dDj1X+tgpsUMm5opcq5qSDd0MutLS3wA/1blWUNMD/YE+J OoYg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1713447699; x=1714052499; h=cc:to:message-id:content-transfer-encoding:mime-version:subject :date:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=Z8Q8PkKj9VfKJC1mpdjogpO5/6dV0GWIjsKclaHyBuY=; b=CYDH8dX0fOVQqD1OX5fAWA+xPWhvjY8gArKo6OEEGn9ZJBXHRcEJQ3NhqusTihKste epcZlGppeQ19Eu+MIcpE+MzNNI4pOfYVNTBzeeSUdIcQ5IED9/M9VWS21MBmORyaxCb/ XISdxgsf0tKezUgY0K2TTg/aE1Z2/kYspw+QLos0n4OmX93n1BOtmBEwAJ+OE/Mm4FOF L7rPfECScnaq1Dv4kMHknYQNV6m0cZM4zmHh776TQuOxwHs2jchNvf96KjWYnxJIOLbB 1K8/4Nxynq6VTaGsuCKdg13xoQh4FFDFNIYRqaGltSmb3T9aiFyxUN3Bpd4pRZ4gFt8q Yh/Q== X-Gm-Message-State: AOJu0YwjbP+iDjqvOPC5T4GoaA4YpPn0moIEaQSfu4Xa1PmB6lJMI4a1 xn5/NGD2Zxv4LFKvM5nFec8hc6dIWN9cFmyz7KkHl9aUpKeddurcxGTcFOQYjZE= X-Google-Smtp-Source: AGHT+IFihOygOq+RuFRNYpUjc3dh2ppGPOrymInr2wa7gdeDSW8Z2jhCCG4NPFX9yOx59qxtCJF4vw== X-Received: by 2002:adf:f107:0:b0:346:d7d9:83ae with SMTP id r7-20020adff107000000b00346d7d983aemr1974699wro.52.1713447699420; Thu, 18 Apr 2024 06:41:39 -0700 (PDT) Received: from [127.0.1.1] ([62.231.100.236]) by smtp.gmail.com with ESMTPSA id bi18-20020a05600c3d9200b00418d5b16fa2sm3540809wmb.30.2024.04.18.06.41.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 18 Apr 2024 06:41:39 -0700 (PDT) From: Abel Vesa Date: Thu, 18 Apr 2024 16:41:32 +0300 Subject: [PATCH] clk: qcom: clk-alpha-pll: Skip reconfiguring the running Lucid Evo Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240418-clk-qcom-lucid-evo-skip-configuring-enabled-v1-1-caede5f1c7a3@linaro.org> X-B4-Tracking: v=1; b=H4sIAAwjIWYC/x3NQQqDMBBA0avIrDuQWEukVyldmMmYDqYTm6AUx Ls3dPk2/x9QuQhXuHcHFN6lStYGe+mAXpNGRgnN0Jt+MIMdkdKCH8pvTBtJQN4z1kVWpKyzxK2 IRmSdfOKAzlrv2I3XmzfQimvhWb7/2+N5nj/6GHCzfQAAAA== To: Bjorn Andersson , Michael Turquette , Stephen Boyd , Konrad Dybcio , Dmitry Baryshkov Cc: linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, Abel Vesa X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1399; i=abel.vesa@linaro.org; h=from:subject:message-id; bh=8MzW49dMcgqrWLiS7mwIpQOpeo1dbVcEjhaJQWBw44Y=; b=owEBbQKS/ZANAwAKARtfRMkAlRVWAcsmYgBmISMNHLTmgu0xX/TL+OLtu5GJXEUyNoWCimTfq tbNZOviUHSJAjMEAAEKAB0WIQRO8+4RTnqPKsqn0bgbX0TJAJUVVgUCZiEjDQAKCRAbX0TJAJUV VtJ/EADLoUXsaikbAsY4EWLnvAbdfIRHcu6YkRARES1bYuTmIw4WTNqpe66miuk4dFMkrJ6b8Rm D+/b1TLzpzS5Ua9w16t+EHDIoPIdOK6OZeECopbWIY+Qz7sRmlXe6Xk5n+0Wh5KEjulOfb/vlR0 +PuepWRH3+lxr/ctyWZ1GgEVncjMgwLhqxQbn1FDYLJRF4tLj/KwsEfM4DZwMc0BIsmTMhR9px2 inQ+2Y4/krMtEHAYTxk12bnp5xoxVQ9SgMol4oE9flajb+SJiTTuBe7/VUZPYgrYOn65QK/uKcZ pQPHcYXA5O4W5VZvcnTXdEDEe9kcSAcElJ5bAdA6Cag25ODSM22CQQ+KjGd/AHzbUY4dmLZIDUd YxvXarxk+QofUBiVRBH3gXs6eNI4VGyqePJm5rC0lO4A9hj8eM3r9mR5DtLzXPx/haOEyTywkcI p9mUNg/l7SNryQEg9QtQDT3YiTnB+Ow2lCPaN9Hdl25eA9JTNuvNxu3cqqy/ql6nM4Qjt1JJooX GgxNydIWFJ8h0UxXVj9lFBSivfFtPPoVbQwDHU/SY9K7D8HoQsXQdne576yzco2rQRe/79b/W3B kDQhsoBseoMwGJp2NKcL7xzJCCoXqvyIhUmQj4IoVZBOCdkjwJWT4HWZvZmj3q1el5ZxwTIhM7U uNCOFy+AC2ZxZCQ== X-Developer-Key: i=abel.vesa@linaro.org; a=openpgp; fpr=6AFF162D57F4223A8770EF5AF7BF214136F41FAE The PLL0 is configured by the bootlader and is the parent of the mdp_clk_src. The Trion implementation of the configure function is already skipping this step if the PLL is enabled, so lets extend the same behavior to Lucid Evo variant. Signed-off-by: Abel Vesa --- drivers/clk/qcom/clk-alpha-pll.c | 9 +++++++++ 1 file changed, 9 insertions(+) --- base-commit: 4eab358930711bbeb85bf5ee267d0d42d3394c2c change-id: 20240418-clk-qcom-lucid-evo-skip-configuring-enabled-711b7e7835b0 Best regards, diff --git a/drivers/clk/qcom/clk-alpha-pll.c b/drivers/clk/qcom/clk-alpha-pll.c index 8a412ef47e16..4c5aeccff0ef 100644 --- a/drivers/clk/qcom/clk-alpha-pll.c +++ b/drivers/clk/qcom/clk-alpha-pll.c @@ -2114,6 +2114,15 @@ void clk_lucid_evo_pll_configure(struct clk_alpha_pll *pll, struct regmap *regma { u32 lval = config->l; + /* + * If the bootloader left the PLL enabled it's likely that there are + * RCGs that will lock up if we disable the PLL below. + */ + if (trion_pll_is_enabled(pll, regmap)) { + pr_debug("Lucid Evo PLL is already enabled, skipping configuration\n"); + return; + } + lval |= TRION_PLL_CAL_VAL << LUCID_EVO_PLL_CAL_L_VAL_SHIFT; clk_alpha_pll_write_config(regmap, PLL_L_VAL(pll), lval); clk_alpha_pll_write_config(regmap, PLL_ALPHA_VAL(pll), config->alpha);