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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 49E6FC43217 for ; Sat, 2 Oct 2021 01:00:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2E73C61AEE for ; Sat, 2 Oct 2021 01:00:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230014AbhJBBBx (ORCPT ); Fri, 1 Oct 2021 21:01:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58054 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231153AbhJBBBv (ORCPT ); Fri, 1 Oct 2021 21:01:51 -0400 Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [IPv6:2001:67c:670:201:290:27ff:fe1d:cc33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 06C02C0613E5 for ; Fri, 1 Oct 2021 18:00:07 -0700 (PDT) Received: from dude03.red.stw.pengutronix.de ([2a0a:edc0:0:1101:1d::39]) by metis.ext.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1mWTNh-0005o6-4n; Sat, 02 Oct 2021 03:00:01 +0200 From: Lucas Stach To: Shawn Guo Cc: Rob Herring , Fabio Estevam , NXP Linux Team , Adam Ford , Frieder Schrempf , Marek Vasut , Tim Harvey , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kernel@pengutronix.de, patchwork-lst@pengutronix.de Subject: [PATCH v5 05/18] soc: imx: gpcv2: add domain option to keep domain clocks enabled Date: Sat, 2 Oct 2021 02:59:41 +0200 Message-Id: <20211002005954.1367653-6-l.stach@pengutronix.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20211002005954.1367653-1-l.stach@pengutronix.de> References: <20211002005954.1367653-1-l.stach@pengutronix.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SA-Exim-Connect-IP: 2a0a:edc0:0:1101:1d::39 X-SA-Exim-Mail-From: l.stach@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: devicetree@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Some of the MIX domains are using clocks to drive the bus bridges. Those must be enabled at all times, as long as the domain is powered up and they don't have any other consumer than the power domain. Add an option to keep the clocks attached to a domain enabled as long as the domain is power up and only disable them after the domain is powered down. Signed-off-by: Lucas Stach Reviewed-by: Peng Fan --- drivers/soc/imx/gpcv2.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/drivers/soc/imx/gpcv2.c b/drivers/soc/imx/gpcv2.c index 35f26f57d1ac..c3b1d2580963 100644 --- a/drivers/soc/imx/gpcv2.c +++ b/drivers/soc/imx/gpcv2.c @@ -202,6 +202,7 @@ struct imx_pgc_domain { } bits; const int voltage; + const bool keep_clocks; struct device *dev; }; @@ -295,7 +296,8 @@ static int imx_pgc_power_up(struct generic_pm_domain *genpd) } /* Disable reset clocks for all devices in the domain */ - clk_bulk_disable_unprepare(domain->num_clks, domain->clks); + if (!domain->keep_clocks) + clk_bulk_disable_unprepare(domain->num_clks, domain->clks); return 0; @@ -317,10 +319,12 @@ static int imx_pgc_power_down(struct generic_pm_domain *genpd) int ret; /* Enable reset clocks for all devices in the domain */ - ret = clk_bulk_prepare_enable(domain->num_clks, domain->clks); - if (ret) { - dev_err(domain->dev, "failed to enable reset clocks\n"); - return ret; + if (!domain->keep_clocks) { + ret = clk_bulk_prepare_enable(domain->num_clks, domain->clks); + if (ret) { + dev_err(domain->dev, "failed to enable reset clocks\n"); + return ret; + } } /* request the ADB400 to power down */ -- 2.30.2