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Fri, 29 Oct 2021 00:51:22 +0000 From: "Peng Fan (OSS)" To: lukma@denx.de, sjg@chromium.org, trini@konsulko.com, seanga2@gmail.com Cc: u-boot@lists.denx.de, Peng Fan Subject: [PATCH V2] clk: introduce u-boot,ignore-clk-defaults Date: Fri, 29 Oct 2021 09:28:01 +0800 Message-Id: <20211029012801.15193-1-peng.fan@oss.nxp.com> X-Mailer: git-send-email 2.30.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: SI2PR02CA0038.apcprd02.prod.outlook.com (2603:1096:4:196::22) To DU2PR04MB9020.eurprd04.prod.outlook.com (2603:10a6:10:2e3::9) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from linux-1xn6.ap.freescale.net (119.31.174.71) by SI2PR02CA0038.apcprd02.prod.outlook.com (2603:1096:4:196::22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4649.15 via Frontend Transport; Fri, 29 Oct 2021 00:51:20 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 4d260f42-355a-45dc-f82d-08d99a763a21 X-MS-TrafficTypeDiagnostic: DU2PR04MB8662: X-MS-Exchange-SharedMailbox-RoutingAgent-Processed: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:9508; 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So introduce a new property to ignore the default settings which could be used by any node that wanna ignore default settings. Reviewed-by: Simon Glass Signed-off-by: Peng Fan --- V2: Add R-b tag Tom, Simon After a thought, I think still put it as a u-boot thing. assigned-clock-x is actually Linux specific, however I could not add the new property to Linux, because we are supporting SystemReady-IR, we need the assigned-clock-x property in linux working and ignore it in U-Boot. doc/device-tree-bindings/device.txt | 3 +++ drivers/clk/clk-uclass.c | 3 +++ 2 files changed, 6 insertions(+) diff --git a/doc/device-tree-bindings/device.txt b/doc/device-tree-bindings/device.txt index 73ce2a3b5b..fe34ced268 100644 --- a/doc/device-tree-bindings/device.txt +++ b/doc/device-tree-bindings/device.txt @@ -28,6 +28,9 @@ the acpi,compatible property. Linux will only load the driver if the device can be detected (e.g. on I2C bus). Note that this is an out-of-tree Linux feature. +Common device bindings that could be shared listed below: + - u-boot,ignore-clk-defaults : ignore the assigned-clock-parents + and assigned-clock-rates for a device that has the property. Example ------- diff --git a/drivers/clk/clk-uclass.c b/drivers/clk/clk-uclass.c index 493018b33e..6bf3179e7b 100644 --- a/drivers/clk/clk-uclass.c +++ b/drivers/clk/clk-uclass.c @@ -376,6 +376,9 @@ int clk_set_defaults(struct udevice *dev, enum clk_defaults_stage stage) if (!dev_has_ofnode(dev)) return 0; + if (ofnode_get_property(dev_ofnode(dev), "u-boot,ignore-clk-defaults", NULL)) + return 0; + /* * To avoid setting defaults twice, don't set them before relocation. * However, still set them for SPL. And still set them if explicitly -- 2.30.0