From patchwork Wed Dec 27 09:04:43 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pin-yen Lin X-Patchwork-Id: 13505222 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id CCC28C46CD2 for ; Wed, 27 Dec 2023 09:05:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=UqybA8kGXGwS0p6VfCaZS7VsH26LSz7rBgi0KXqcQ7I=; b=GyI8adxqarVn8D+eUK4sFTZy0/ aT1fnfUsOWU1xDrDfvwf+opmbGCuEs+T+DOGC3b9WLGsg5uVTRMD9sNh9MnH2dQeT4tqlR21UJLIJ pjiFwhH4viyjmR7I8wLRcCh1LGDGNMussWLhonTYsj7mYFzO403UU9i27WbFMVrpY0JrnhKjNsTnQ kDQjl1p0gFNJPYfgk8e+DTtQYoRMfCAHx1BGYScXa8BXW1k5LyUztmia4U4e2PJIFdFX79zPemyxP 1crzeBBs4kH8wuu8u0AaWqrPkaxRL7qrDWmsCjLIqrgWMijtSgfV9Anjzzr8V8Dg4nicvItThk6qQ CKW8JLNQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1rIPqm-00EGHa-2m; Wed, 27 Dec 2023 09:05:16 +0000 Received: from mail-pg1-x52b.google.com ([2607:f8b0:4864:20::52b]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1rIPqc-00EGCC-2S for linux-mediatek@lists.infradead.org; Wed, 27 Dec 2023 09:05:08 +0000 Received: by mail-pg1-x52b.google.com with SMTP id 41be03b00d2f7-5cdfed46372so2432651a12.3 for ; Wed, 27 Dec 2023 01:05:06 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1703667905; x=1704272705; darn=lists.infradead.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=UqybA8kGXGwS0p6VfCaZS7VsH26LSz7rBgi0KXqcQ7I=; b=nhTwADSERxNtONieOjsODqsLIwkqJjd1r/VuC5co9i3NZa9yC6fa4qvG7N/irTkE3q JrVk7JnyCAIg3yN1r1IFBpXccggU6/5OJ94XFolkGIeuSJDYnm9Y4wtnaK7EFtUsGjOt qbDHeRg1pxsHUoEKCRbgMWDbEe1TuT2F7CXg4= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1703667905; x=1704272705; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=UqybA8kGXGwS0p6VfCaZS7VsH26LSz7rBgi0KXqcQ7I=; b=NVyoiH2cUGtEzeDhxTBhq5tz3f1WLZvwXgR1Ug9CDsZuGzObHaPjZdEnOpF0tsG7E6 Orr92eQbdcCRj3+D0byGc+MdCTbzDkxDVbszuBYwku/RIKNBZrziWBQc0FO2VPL1cDaQ K3Z+BV5QEdWixkeKBQuVV5lFvoTWCcKY7qeq/0t4Ul1JIXtMD6BGo+pnAJ2s7whaDkC1 kJYLMOfH1KOmJBRLjGwwYDrnbxCdmDrJUV3YjcGUea08mj4W0h2L6TefztPok1Z1QvZX AJwfCrmQk7eSOdVo+90MirHKjYQocitUfBWG6u6BkFoByCjQ62uGOV4OknBFlFThlGxw gGmg== X-Gm-Message-State: AOJu0Yy4P8iGi0FsSvuVPMKYyQn5HUJZ7noIKNtK6ZrVr4UljzFtPRlw 9vYr5AmVkw+hXuSiQcr81AfEyEtb6+XS X-Google-Smtp-Source: AGHT+IHzLN+1pxxIuXsPLSje0l/zdsr5/VBgqdxz5v1VViJZw0E1DLI5tn6YlpQiPS6VAvJrCPbvFw== X-Received: by 2002:a05:6a20:938d:b0:196:2c8b:9f21 with SMTP id x13-20020a056a20938d00b001962c8b9f21mr200388pzh.112.1703667905699; Wed, 27 Dec 2023 01:05:05 -0800 (PST) Received: from treapking.tpe.corp.google.com ([2401:fa00:1:10:18d2:7869:e8b9:f4e4]) by smtp.gmail.com with ESMTPSA id v22-20020a056a00149600b006d9b65d1a8esm5347701pfu.28.2023.12.27.01.05.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 27 Dec 2023 01:05:05 -0800 (PST) From: Pin-yen Lin To: Michael Turquette , Stephen Boyd , Matthias Brugger , AngeloGioacchino Del Regno Cc: Pin-yen Lin , linux-mediatek@lists.infradead.org, linux-clk@vger.kernel.org, Chen-Yu Tsai , linux-kernel@vger.kernel.org, Weiyi Lu , linux-arm-kernel@lists.infradead.org Subject: [PATCH 2/2] clk: mediatek: mt8183: Enable need_runtime_pm on mt8183-mfgcfg Date: Wed, 27 Dec 2023 17:04:43 +0800 Message-ID: <20231227090448.2216295-2-treapking@chromium.org> X-Mailer: git-send-email 2.43.0.472.g3155946c3a-goog In-Reply-To: <20231227090448.2216295-1-treapking@chromium.org> References: <20231227090448.2216295-1-treapking@chromium.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231227_010506_847594_EB44F788 X-CRM114-Status: UNSURE ( 9.84 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org mt8183-mfgcfg has a mutual dependency with genpd during the probing stage, so enable need_runtim_pm to prevent a deadlock in the following call stack: CPU0: genpd_lock --> clk_prepare_lock genpd_power_off_work_fn() genpd_lock() generic_pm_domain::power_off() clk_unprepare() clk_prepare_lock() CPU1: clk_prepare_lock --> genpd_lock clk_register() __clk_core_init() clk_prepare_lock() clk_pm_runtime_get() genpd_lock() Do a runtime PM get at the probe function to make sure clk_register() won't acquire the genpd lock. Fixes: acddfc2c261b ("clk: mediatek: Add MT8183 clock support") Signed-off-by: Pin-yen Lin --- drivers/clk/mediatek/clk-mt8183-mfgcfg.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/clk/mediatek/clk-mt8183-mfgcfg.c b/drivers/clk/mediatek/clk-mt8183-mfgcfg.c index ba504e19d420..62d876e150e1 100644 --- a/drivers/clk/mediatek/clk-mt8183-mfgcfg.c +++ b/drivers/clk/mediatek/clk-mt8183-mfgcfg.c @@ -29,6 +29,7 @@ static const struct mtk_gate mfg_clks[] = { static const struct mtk_clk_desc mfg_desc = { .clks = mfg_clks, .num_clks = ARRAY_SIZE(mfg_clks), + .need_runtime_pm = true, }; static const struct of_device_id of_match_clk_mt8183_mfg[] = {