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Fri, 4 Jun 2021 09:11:01 +0000 From: Dong Aisheng To: linux-clk@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org, sboyd@kernel.org, dongas86@gmail.com, shawnguo@kernel.org, kernel@pengutronix.de, abel.vesa@nxp.com, Dong Aisheng Subject: [PATCH 03/10] clk: imx: scu: bypass cpu clock save and restore Date: Fri, 4 Jun 2021 17:09:36 +0800 Message-Id: <20210604090943.3519350-4-aisheng.dong@nxp.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210604090943.3519350-1-aisheng.dong@nxp.com> References: <20210604090943.3519350-1-aisheng.dong@nxp.com> X-Originating-IP: [119.31.174.66] X-ClientProxiedBy: SG2PR0601CA0010.apcprd06.prod.outlook.com (2603:1096:3::20) To DB9PR04MB8477.eurprd04.prod.outlook.com (2603:10a6:10:2c3::11) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from localhost.localdomain (119.31.174.66) by SG2PR0601CA0010.apcprd06.prod.outlook.com (2603:1096:3::20) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4195.24 via Frontend Transport; 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No need save and restore. Signed-off-by: Dong Aisheng Reviewed-by: Abel Vesa --- drivers/clk/imx/clk-scu.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/clk/imx/clk-scu.c b/drivers/clk/imx/clk-scu.c index 680b2650fd45..d87a1a1b297e 100644 --- a/drivers/clk/imx/clk-scu.c +++ b/drivers/clk/imx/clk-scu.c @@ -538,6 +538,11 @@ static int imx_clk_scu_probe(struct platform_device *pdev) static int __maybe_unused imx_clk_scu_suspend(struct device *dev) { struct clk_scu *clk = dev_get_drvdata(dev); + u32 rsrc_id = clk->rsrc_id; + + if ((rsrc_id == IMX_SC_R_A35) || (rsrc_id == IMX_SC_R_A53) || + (rsrc_id == IMX_SC_R_A72)) + return 0; clk->rate = clk_hw_get_rate(&clk->hw); clk->is_enabled = clk_hw_is_enabled(&clk->hw); @@ -554,8 +559,13 @@ static int __maybe_unused imx_clk_scu_suspend(struct device *dev) static int __maybe_unused imx_clk_scu_resume(struct device *dev) { struct clk_scu *clk = dev_get_drvdata(dev); + u32 rsrc_id = clk->rsrc_id; int ret = 0; + if ((rsrc_id == IMX_SC_R_A35) || (rsrc_id == IMX_SC_R_A53) || + (rsrc_id == IMX_SC_R_A72)) + return 0; + if (clk->rate) { ret = clk_scu_set_rate(&clk->hw, clk->rate, 0); dev_dbg(dev, "restore rate %d %s\n", clk->rate,