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vger.kernel.org; dmarc=none action=none header.from=nxp.com; Received: from AM6PR04MB4966.eurprd04.prod.outlook.com (2603:10a6:20b:2::14) by AM6PR0402MB3669.eurprd04.prod.outlook.com (2603:10a6:209:1a::20) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3589.30; Tue, 24 Nov 2020 10:25:20 +0000 Received: from AM6PR04MB4966.eurprd04.prod.outlook.com ([fe80::3cfc:a92e:75ad:ce4a]) by AM6PR04MB4966.eurprd04.prod.outlook.com ([fe80::3cfc:a92e:75ad:ce4a%3]) with mapi id 15.20.3564.029; Tue, 24 Nov 2020 10:25:20 +0000 From: Dong Aisheng To: linux-clk@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org, linux-imx@nxp.com, sudipm.mukherjee@gmail.com, sboyd@kernel.org, shawnguo@kernel.org, linux-pm@vger.kernel.org, dongas86@gmail.com, Dong Aisheng Subject: [PATCH 3/3] clk: imx: scu: defer probe if scu pd is still not ready Date: Tue, 24 Nov 2020 18:08:02 +0800 Message-Id: <20201124100802.22775-4-aisheng.dong@nxp.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20201124100802.22775-1-aisheng.dong@nxp.com> References: <20201124100802.22775-1-aisheng.dong@nxp.com> X-Originating-IP: [119.31.174.66] X-ClientProxiedBy: SG2PR02CA0054.apcprd02.prod.outlook.com (2603:1096:4:54::18) To AM6PR04MB4966.eurprd04.prod.outlook.com (2603:10a6:20b:2::14) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from b29396-OptiPlex-7040.ap.freescale.net (119.31.174.66) by SG2PR02CA0054.apcprd02.prod.outlook.com (2603:1096:4:54::18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.20.3589.20 via Frontend Transport; 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Query the SCU PD status to support -EPROBE_DEFER properly. Signed-off-by: Dong Aisheng --- drivers/clk/imx/clk-scu.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/clk/imx/clk-scu.c b/drivers/clk/imx/clk-scu.c index 1f5518b7ab39..846201f9b72d 100644 --- a/drivers/clk/imx/clk-scu.c +++ b/drivers/clk/imx/clk-scu.c @@ -163,6 +163,9 @@ int imx_clk_scu_init(struct device_node *np) of_property_read_u32(np, "#clock-cells", &clk_cells); if (clk_cells == 2) { + if (!imx_scu_pd_is_initialized()) + return -EPROBE_DEFER; + for (i = 0; i < IMX_SC_R_LAST; i++) INIT_LIST_HEAD(&imx_scu_clks[i]);