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Tue, 18 Oct 2022 09:28:26 -0700 From: Akhil R To: , , , , , , , CC: Subject: [PATCH RESEND v2 0/3] Tegra GCPDMA: Add dma-channel-mask support Date: Tue, 18 Oct 2022 21:58:09 +0530 Message-ID: <20221018162812.69673-1-akhilrajeev@nvidia.com> X-Mailer: git-send-email 2.17.1 X-NVConfidentiality: public MIME-Version: 1.0 Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN8NAM11FT095:EE_|IA0PR12MB7602:EE_ X-MS-Office365-Filtering-Correlation-Id: 059d037b-c086-40eb-3432-08dab125d327 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.117.161;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge2.nvidia.com;CAT:NONE;SFS:(13230022)(4636009)(376002)(39860400002)(136003)(396003)(346002)(451199015)(36840700001)(46966006)(40470700004)(83380400001)(2616005)(336012)(2906002)(186003)(1076003)(86362001)(36756003)(40480700001)(4326008)(8676002)(7696005)(40460700003)(26005)(41300700001)(7636003)(82740400003)(356005)(82310400005)(36860700001)(316002)(426003)(47076005)(70586007)(8936002)(5660300002)(4744005)(6666004)(70206006)(107886003)(110136005)(478600001);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 18 Oct 2022 16:28:43.8471 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 059d037b-c086-40eb-3432-08dab125d327 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.161];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT095.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA0PR12MB7602 Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org Read dma-channel-mask from device tree and register only the specified channels. This is useful to reserve some channels for the firmware. Also update the channel number and interrupts to include all 32 channels. The current driver was using only 31 channels as one channel was reserved for firmware. Now with this change, the driver can align more to the actual hardware. v1->v2: * Reversed the operands and used BIT macro in 'if' condition. * Fixed warning reported-by: kernel test robot Akhil R (3): dt-bindings: dmaengine: Add dma-channel-mask to Tegra GPCDMA arm64: tegra: Add dma-channel-mask in GPCDMA node dmaengine: tegra: Add support for dma-channel-mask .../bindings/dma/nvidia,tegra186-gpc-dma.yaml | 7 +++- arch/arm64/boot/dts/nvidia/tegra186.dtsi | 4 +- arch/arm64/boot/dts/nvidia/tegra194.dtsi | 4 +- arch/arm64/boot/dts/nvidia/tegra234.dtsi | 4 +- drivers/dma/tegra186-gpc-dma.c | 37 +++++++++++++++---- 5 files changed, 45 insertions(+), 11 deletions(-) -- 2.17.1