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Tue, 2 Aug 2022 07:11:52 +0000 From: Liu Ying To: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com, saravanak@google.com, gregkh@linuxfoundation.org, geert+renesas@glider.be Subject: [PATCH 0/3] drivers: bus: Add Freescale i.MX8qxp pixel link MSI bus support Date: Tue, 2 Aug 2022 15:13:07 +0800 Message-Id: <20220802071310.2650864-1-victor.liu@nxp.com> X-Mailer: git-send-email 2.25.1 X-ClientProxiedBy: SG2PR02CA0040.apcprd02.prod.outlook.com (2603:1096:3:18::28) To AM7PR04MB7046.eurprd04.prod.outlook.com (2603:10a6:20b:113::22) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 260ad5a3-e2dc-484a-0c9a-08da74564677 X-MS-TrafficTypeDiagnostic: VI1PR04MB4719:EE_ X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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A power domain and two input clocks need to be enabled before the MSI bus accesses it's child devices, which matches what a simple power-managed bus is(See simple-pm-bus.yaml). Patch 1 adds support to populate simple MFD child devices in the simple-pm-bus driver, since the MSI bus may connect those devices. Patch 2 enables/disables functional clock(s) as a bulk in the simple-pm-bus driver when the simple-pm-bus is being power managed, since the MSI bus takes the two input clocks as functional clocks. Patch 3 adds dt-bindings for the MSI bus. Liu Ying (3): drivers: bus: simple-pm-bus: Populate simple MFD child devices drivers: bus: simple-pm-bus: Use clocks dt-bindings: bus: Add Freescale i.MX8qxp pixel link MSI bus binding .../bus/fsl,imx8qxp-pixel-link-msi-bus.yaml | 84 +++++++++++++++++++ drivers/bus/simple-pm-bus.c | 61 +++++++++++++- 2 files changed, 144 insertions(+), 1 deletion(-) create mode 100644 Documentation/devicetree/bindings/bus/fsl,imx8qxp-pixel-link-msi-bus.yaml