From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Thu, 24 Jun 2021 17:02:58 +0200 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by lore.white.stw.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1lwQsc-00055h-Go for lore@lore.pengutronix.de; Thu, 24 Jun 2021 17:02:58 +0200 Received: from bombadil.infradead.org ([2607:7c80:54:e::133]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lwQsb-0001m4-Bd for lore@pengutronix.de; Thu, 24 Jun 2021 17:02:58 +0200 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Cc:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=2ma5m1FhMvgYllVsyE3TYWlWeIgzru7ibhsbAg5fWGg=; b=yhwgSmCmqkzL87 93YRg8ebfbpegpDGbR7Ub3Z2RQxP0uiU7e6GJnxJRg3fDIb/vDGyX72ArT7dL3fhTVW7am//SbqdY /aFT+mn2ipL1yGk3YT5A6lDbS2VswJ2X/5JCD5SQUlVNlopeg4hZL/z1JW8qlttc4A2peGw3M/ykx MX/+nBa+iMnQdjgLywWMDeldG/cmDtgRxnoZgFY8dPl53zlHxYARv78s4dV82zy+OCKtEZuziutt9 GagAf8dQzmiBClvM+WIqGrfvsC2M8CXKcbnXow0KrlrAsHB7/ZRu8xX3OhVZhteJqdlHKXfrPpdEZ jT38yE5oMrB1yvhFfbCA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1lwQqw-00F9VI-UV; Thu, 24 Jun 2021 15:01:15 +0000 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1lwQqe-00F9Mt-Qq for barebox@lists.infradead.org; Thu, 24 Jun 2021 15:00:58 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lwQqd-0000q6-3P for barebox@lists.infradead.org; Thu, 24 Jun 2021 17:00:55 +0200 Received: from [2a0a:edc0:0:1101:1d::39] (helo=dude03.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1lwQqc-0002Aj-Hg for barebox@lists.infradead.org; Thu, 24 Jun 2021 17:00:54 +0200 Received: from mtr by dude03.red.stw.pengutronix.de with local (Exim 4.92) (envelope-from ) id 1lwQqc-0053b8-FD for barebox@lists.infradead.org; Thu, 24 Jun 2021 17:00:54 +0200 From: Michael Tretter To: barebox@lists.infradead.org Date: Thu, 24 Jun 2021 17:00:49 +0200 Message-Id: <20210624150054.1205422-3-m.tretter@pengutronix.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210624150054.1205422-1-m.tretter@pengutronix.de> References: <20210624150054.1205422-1-m.tretter@pengutronix.de> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210624_080057_042411_FED03EE7 X-CRM114-Status: GOOD ( 10.91 ) X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:e::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.ext.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-4.3 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH v2 2/7] clk: zynqmp: do not enable already enabled clocks X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.ext.pengutronix.de) The pmu fw manages the permissions who can enable/disable the clocks. There are a few clocks (TOPSW_LSBUS and LSBUS) which are exposed to Barebox and Barebox assumes that is has to enable the clocks. However, the pmu fw considers the clocks under its control and returns a permission denied for the clock enable request. Assume that clocks that are already enabled don't need to be enable by Barebox to avoid the permission denied errors. Signed-off-by: Michael Tretter --- Changelog: v2: none --- drivers/clk/zynqmp/clk-gate-zynqmp.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/clk/zynqmp/clk-gate-zynqmp.c b/drivers/clk/zynqmp/clk-gate-zynqmp.c index a3b9ee21e506..493c1dfeaaa3 100644 --- a/drivers/clk/zynqmp/clk-gate-zynqmp.c +++ b/drivers/clk/zynqmp/clk-gate-zynqmp.c @@ -28,6 +28,9 @@ static int zynqmp_clk_gate_enable(struct clk_hw *hw) { struct zynqmp_clk_gate *gate = to_zynqmp_clk_gate(hw); + if (clk_hw_is_enabled(hw)) + return 0; + return gate->ops->clock_enable(gate->clk_id); } -- 2.30.2 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox