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Wed, 19 Feb 2020 08:06:28 +0000 From: peng.fan@nxp.com To: shawnguo@kernel.org, s.hauer@pengutronix.de, sboyd@kernel.org, robh+dt@kernel.org, viresh.kumar@linaro.org, rjw@rjwysocki.net Cc: kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com, Anson.Huang@nxp.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, abel.vesa@nxp.com, Peng Fan Subject: [PATCH v2 06/14] clk: imx: pllv4: use prepare/unprepare Date: Wed, 19 Feb 2020 15:59:49 +0800 Message-Id: <1582099197-20327-7-git-send-email-peng.fan@nxp.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1582099197-20327-1-git-send-email-peng.fan@nxp.com> References: <1582099197-20327-1-git-send-email-peng.fan@nxp.com> Content-Type: text/plain X-ClientProxiedBy: HKAPR04CA0013.apcprd04.prod.outlook.com (2603:1096:203:d0::23) To AM0PR04MB4481.eurprd04.prod.outlook.com (2603:10a6:208:70::15) MIME-Version: 1.0 Received: from localhost.localdomain (119.31.174.66) by HKAPR04CA0013.apcprd04.prod.outlook.com (2603:1096:203:d0::23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.20.2729.23 via Frontend Transport; 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X-Microsoft-Antispam-Message-Info: tNHAO0X3bIlMQgAPinc5+UPLNuL2reim16qI8YsnIJFHaYVqFPoLJ8n0nie8kS8SEOsoovcxcBLPagJzZNAU6uewL4H5ocVKUg2HvmPJvep32fxG/zwm/G8SPnZ0BoYXare4yfd9McPhWwNak8IrrpUSbo4GA/W+bcs6Q+KiqoBQjgJMtQs+Fhv7eo9Apes1UgnksruFyUANu1+xX1uooFfumdLTJdW/IDu/h3ndXgGNxwyO8yaO8U4EpsTKFiZVhVFaUEPziqWVEsrII+66wUSKeNV1pSIjVN+3rx1mFFUhZt1AI/pe3z46XxjZm3bUsgNHZ3VVVqc2Pu5XugK5K269cTLaJrYJQFQYBmPsVW79J4Aruc6Il7TPahSZ21g0KCT1pQTerJS8bo/kD/0FE9zebH94c+W2E6KB6/cmUVDaGNfmD5OXNuLo4Web81aF1ZyKGd0SKqiKJa+AeiGlUXFBDMMZIoxrQAXghB2Qzg40X8iGsGASEf3bXyIP7jWMNDP/WSu48l2A1lXHMajcF7oyZuEYK+HG45APaOxJz2I= X-MS-Exchange-AntiSpam-MessageData: OkAq0JVhDPqThXZwEMO4BstUbR1ayT+so+lnK1+ldCs8cBjsxOY27sCDdk0mEiAWGQJAe1CsqVlXlosUmsdMnZKZk+FLcf3pF4Q4YfhPJzHvr2X9cZXE/YmRcel120qCdHg5A8Y4cJgjsZuRu9FIDw== X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 5df81ee8-ee69-463f-a631-08d7b5129f41 X-MS-Exchange-CrossTenant-OriginalArrivalTime: 19 Feb 2020 08:06:28.3782 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: X51Cfrf585GVzyLZ5NeuIqCc8YxVOBX+dmkSZPhFMWOWjIftfmTLjciqaXmCDqkSSPEi0oaDMrdcH4OtWZF75A== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR04MB6401 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Peng Fan It is not good to use enable/disable for PLLv4 which needs time to lock, because enable/disable is expected to be able run in interrupt context. So use prepare/unprepare. Signed-off-by: Peng Fan --- drivers/clk/imx/clk-pllv4.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/clk/imx/clk-pllv4.c b/drivers/clk/imx/clk-pllv4.c index f51a800c268c..a49450431855 100644 --- a/drivers/clk/imx/clk-pllv4.c +++ b/drivers/clk/imx/clk-pllv4.c @@ -54,7 +54,7 @@ static inline int clk_pllv4_wait_lock(struct clk_pllv4 *pll) csr, csr & PLL_VLD, 0, LOCK_TIMEOUT_US); } -static int clk_pllv4_is_enabled(struct clk_hw *hw) +static int clk_pllv4_is_prepared(struct clk_hw *hw) { struct clk_pllv4 *pll = to_clk_pllv4(hw); @@ -175,7 +175,7 @@ static int clk_pllv4_set_rate(struct clk_hw *hw, unsigned long rate, return 0; } -static int clk_pllv4_enable(struct clk_hw *hw) +static int clk_pllv4_prepare(struct clk_hw *hw) { u32 val; struct clk_pllv4 *pll = to_clk_pllv4(hw); @@ -187,7 +187,7 @@ static int clk_pllv4_enable(struct clk_hw *hw) return clk_pllv4_wait_lock(pll); } -static void clk_pllv4_disable(struct clk_hw *hw) +static void clk_pllv4_unprepare(struct clk_hw *hw) { u32 val; struct clk_pllv4 *pll = to_clk_pllv4(hw); @@ -201,9 +201,9 @@ static const struct clk_ops clk_pllv4_ops = { .recalc_rate = clk_pllv4_recalc_rate, .round_rate = clk_pllv4_round_rate, .set_rate = clk_pllv4_set_rate, - .enable = clk_pllv4_enable, - .disable = clk_pllv4_disable, - .is_enabled = clk_pllv4_is_enabled, + .prepare = clk_pllv4_prepare, + .unprepare = clk_pllv4_unprepare, + .is_prepared = clk_pllv4_is_prepared, }; struct clk_hw *imx_clk_hw_pllv4(const char *name, const char *parent_name, -- 2.16.4