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 X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7CD9CC432C1 for ; Tue, 24 Sep 2019 17:00:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4B73F20673 for ; Tue, 24 Sep 2019 17:00:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569344403; bh=f4rcsN3ybGO/sVNQMSjrifM4UThQhI6TFoiqf0tlzng=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=bJomB6z4shG35fbWG+34GHUAXIMmb/EAZPxChhVgmVKDcCjFUHO+PorZllJO/QdIT 0tA1Of6fUR4feR6Agz2pnf1kbKHS3QFD3XuIVkeBU8TNIIRPYc8lQgiV+HbYr6tQ/V x7OJl70Oki/+I0J5cXY4YgmvGE8Nq23S4XR/gXRg= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2407566AbfIXRAC (ORCPT ); Tue, 24 Sep 2019 13:00:02 -0400 Received: from mail.kernel.org ([198.145.29.99]:37128 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2410315AbfIXQq3 (ORCPT ); Tue, 24 Sep 2019 12:46:29 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 184EE21D7C; Tue, 24 Sep 2019 16:46:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569343588; bh=f4rcsN3ybGO/sVNQMSjrifM4UThQhI6TFoiqf0tlzng=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=DEloijtNQjAUF1mJFjdmr1I4PTbYPbfjKxM+SRwevc+M9UgpjAU0cuhBI6GkdnlIS h8EOWADlB6+JRk0dxqs4kYOqIKm40fGQ593EU6MIu1jPltyphyOLCf1WsHgTZfpdpU wbbo3iVZckUrMwEQ0PQMNfHPuuwBU4NavYlJjW6Y= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Abel Vesa , Daniel Baluta , Shawn Guo , Sasha Levin , linux-clk@vger.kernel.org Subject: [PATCH AUTOSEL 5.2 16/70] clk: imx8mq: Mark AHB clock as critical Date: Tue, 24 Sep 2019 12:44:55 -0400 Message-Id: <20190924164549.27058-16-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190924164549.27058-1-sashal@kernel.org> References: <20190924164549.27058-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Abel Vesa [ Upstream commit 9b9c60bed562c3718ae324a86f3f30a4ff983cf8 ] Initially, the TMU_ROOT clock was marked as critical, which automatically made the AHB clock to stay always on. Since the TMU_ROOT clock is not marked as critical anymore, following commit: "clk: imx8mq: Remove CLK_IS_CRITICAL flag for IMX8MQ_CLK_TMU_ROOT" all the clocks that derive from ipg_root clock (and implicitly ahb clock) would also have to enable, along with their own gate, the AHB clock. But considering that AHB is actually a bus that has to be always on, we mark it as critical in the clock provider driver and then all the clocks that derive from it can be controlled through the dedicated per IP gate which follows after the ipg_root clock. Signed-off-by: Abel Vesa Tested-by: Daniel Baluta Signed-off-by: Shawn Guo Signed-off-by: Sasha Levin --- drivers/clk/imx/clk-imx8mq.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/clk/imx/clk-imx8mq.c b/drivers/clk/imx/clk-imx8mq.c index daf1841b2adb0..f29025c99c53b 100644 --- a/drivers/clk/imx/clk-imx8mq.c +++ b/drivers/clk/imx/clk-imx8mq.c @@ -396,7 +396,8 @@ static int imx8mq_clocks_probe(struct platform_device *pdev) clks[IMX8MQ_CLK_NOC_APB] = imx8m_clk_composite_critical("noc_apb", imx8mq_noc_apb_sels, base + 0x8d80); /* AHB */ - clks[IMX8MQ_CLK_AHB] = imx8m_clk_composite("ahb", imx8mq_ahb_sels, base + 0x9000); + /* AHB clock is used by the AHB bus therefore marked as critical */ + clks[IMX8MQ_CLK_AHB] = imx8m_clk_composite_critical("ahb", imx8mq_ahb_sels, base + 0x9000); clks[IMX8MQ_CLK_AUDIO_AHB] = imx8m_clk_composite("audio_ahb", imx8mq_audio_ahb_sels, base + 0x9100); /* IPG */ -- 2.20.1