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charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260127-scu-v2-1-03f3aaa56e1b@nxp.com> X-B4-Tracking: v=1; b=H4sIAFfzd2kC/1WMQQ7CIBBFr9LMWgwzKBFXvYfpogK1sxAaUFLTc HexO5fv57+3QfaJfYZrt0HyhTPH0IAOHdh5DA8v2DUGkqQlkhbZvoU1yp3OXqGZCNpzSX7ida/ chsYz51dMnz1a8Lf++wUFirtxCt2IdNGyD+tytPEJQ631C0KNdzuUAAAA X-Change-ID: 20260126-scu-c93d45e319f2 To: Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Dong Aisheng , Frank Li Cc: imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Peng Fan X-Mailer: b4 0.14.2 X-ClientProxiedBy: SI1PR02CA0060.apcprd02.prod.outlook.com (2603:1096:4:1f5::17) To PAXPR04MB8459.eurprd04.prod.outlook.com (2603:10a6:102:1da::15) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PAXPR04MB8459:EE_|AM9PR04MB7619:EE_ X-MS-Office365-Filtering-Correlation-Id: fbbd64a7-97e0-4545-a27e-08de5d2f849f X-MS-Exchange-SharedMailbox-RoutingAgent-Processed: True X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|7416014|376014|52116014|19092799006|366016|1800799024|38350700014; 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The older multi-channel MU configurations (tx0..tx3 and rx0..rx3) are less efficient in practice and not needed. Mark these legacy mbox-names and mboxes tuple layouts as deprecated in the binding schema. The driver continues to support them for backward compatibility in case firmware publishes the legacy properties. The example section is updated accordingly to demonstrate the recommended layout. Signed-off-by: Peng Fan Reviewed-by: Frank Li --- Changes in v2: - A minor grammer update in commit log - Link to v1: https://lore.kernel.org/r/20260126-scu-v1-1-b9d31da12860@nxp.= com --- .../devicetree/bindings/firmware/fsl,scu.yaml | 20 +++++++++++-----= ---- 1 file changed, 11 insertions(+), 9 deletions(-) diff --git a/Documentation/devicetree/bindings/firmware/fsl,scu.yaml b/Docu= mentation/devicetree/bindings/firmware/fsl,scu.yaml index f9ba18f06369215691c69cdc1538b53dfd369f37..307f1c6278532ace94db92e6e8b= 68312eb4c8a4f 100644 --- a/Documentation/devicetree/bindings/firmware/fsl,scu.yaml +++ b/Documentation/devicetree/bindings/firmware/fsl,scu.yaml @@ -76,7 +76,8 @@ properties: - description: TX0 MU channel - description: RX0 MU channel - description: optional MU channel for general interrupt - - items: + - deprecated: true + items: - description: TX0 MU channel - description: TX1 MU channel - description: TX2 MU channel @@ -85,7 +86,8 @@ properties: - description: RX1 MU channel - description: RX2 MU channel - description: RX3 MU channel - - items: + - deprecated: true + items: - description: TX0 MU channel - description: TX1 MU channel - description: TX2 MU channel @@ -105,7 +107,8 @@ properties: - const: tx0 - const: rx0 - const: gip3 - - items: + - deprecated: true + items: - const: tx0 - const: tx1 - const: tx2 @@ -114,7 +117,8 @@ properties: - const: rx1 - const: rx2 - const: rx3 - - items: + - deprecated: true + items: - const: tx0 - const: tx1 - const: tx2 @@ -167,11 +171,9 @@ examples: firmware { system-controller { compatible =3D "fsl,imx-scu"; - mbox-names =3D "tx0", "tx1", "tx2", "tx3", - "rx0", "rx1", "rx2", "rx3", - "gip3"; - mboxes =3D <&lsio_mu1 0 0 &lsio_mu1 0 1 &lsio_mu1 0 2 &lsio_mu= 1 0 3 - &lsio_mu1 1 0 &lsio_mu1 1 1 &lsio_mu1 1 2 &lsio_mu1 = 1 3 + mbox-names =3D "tx0", "rx0", "gip3"; + mboxes =3D <&lsio_mu1 0 0 + &lsio_mu1 1 0 &lsio_mu1 3 3>; =20 clock-controller { --- base-commit: ca3a02fda4da8e2c1cb6baee5d72352e9e2cfaea change-id: 20260126-scu-c93d45e319f2 Best regards, --=20 Peng Fan