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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , linux-can@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, imx@lists.linux.dev, NXP Linux Team , Christophe Lizzi , Alberto Ruiz , Enric Balletbo References: <20241119081053.4175940-1-ciprianmarian.costea@oss.nxp.com> <20241119081053.4175940-4-ciprianmarian.costea@oss.nxp.com> <20241120-magnificent-accelerated-robin-70e7ef-mkl@pengutronix.de> <20241120-venomous-skilled-rottweiler-622b36-mkl@pengutronix.de> <20241120-cheerful-pug-of-efficiency-bc9b22-mkl@pengutronix.de> Content-Language: en-US From: Ciprian Marian Costea In-Reply-To: <20241120-cheerful-pug-of-efficiency-bc9b22-mkl@pengutronix.de> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-ClientProxiedBy: AS4P189CA0062.EURP189.PROD.OUTLOOK.COM (2603:10a6:20b:659::9) To DU0PR04MB9251.eurprd04.prod.outlook.com (2603:10a6:10:352::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: DU0PR04MB9251:EE_|VI1PR04MB9953:EE_ X-MS-Office365-Filtering-Correlation-Id: b9624b29-881d-41f6-bc26-08dd0950babd 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|1800799024|366016; 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Is there >>>>> any downstream code yet? >>>>> >>>>> Marc >>>>> >>>> >>>> Hello Marc, >>>> >>>> The mainline driver already handles the 2nd mailbox range (same >>>> 'flexcan_irq') is used. The only difference is that for the 2nd mailbox >>>> range a separate interrupt line is used. >>> >>> AFAICS the IP core supports up to 128 mailboxes, though the driver only >>> supports 64 mailboxes. Which mailboxes do you mean by the "2nd mailbox >>> range"? What about mailboxes 64..127, which IRQ will them? >> >> On S32G the following is the mapping between FlexCAN IRQs and mailboxes: >> - IRQ line X -> Mailboxes 0-7 >> - IRQ line Y -> Mailboxes 8-127 (Logical OR of Message Buffer Interrupt >> lines 127 to 8) >> >> By 2nd range, I was refering to Mailboxes 8-127. > > Interesting, do you know why it's not symmetrical (0...63, 64...127)? > Can you point me to the documentation. > > Thanks, > Marc > Unfortunately I do not know why such hardware integration decisions have been made. Documentation for S32G3 SoC can be found on the official NXP website, here: https://www.nxp.com/products/processors-and-microcontrollers/s32-automotive-platform/s32g-vehicle-network-processors/s32g3-processors-for-vehicle-networking:S32G3 But please note that you need to setup an account beforehand. Best Regards, Ciprian