Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Received-SPF: Pass (protection.outlook.com: domain of nvidia.com designates
 216.228.117.161 as permitted sender) receiver=protection.outlook.com;
 client-ip=216.228.117.161; helo=mail.nvidia.com; pr=C
From:   Akhil R <akhilrajeev@nvidia.com>
To:     <ldewangan@nvidia.com>, <jonathanh@nvidia.com>, <vkoul@kernel.org>,
        <thierry.reding@gmail.com>, <p.zabel@pengutronix.de>,
        <dmaengine@vger.kernel.org>, <linux-tegra@vger.kernel.org>,
        <linux-kernel@vger.kernel.org>, <robh+dt@kernel.org>,
        <devicetree@vger.kernel.org>, <krzysztof.kozlowski+dt@linaro.org>,
        <sfr@canb.auug.org.au>
CC:     <akhilrajeev@nvidia.com>
Subject: [PATCH v3 2/3] arm64: tegra: Add dma-channel-mask in GPCDMA node
Date:   Tue, 1 Nov 2022 13:57:11 +0530
Message-ID: <20221101082712.59263-3-akhilrajeev@nvidia.com>
In-Reply-To: <20221101082712.59263-1-akhilrajeev@nvidia.com>
References: <20221101082712.59263-1-akhilrajeev@nvidia.com>
MIME-Version: 1.0
Content-Type: text/plain
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 01 Nov 2022 08:28:03.5900
 (UTC)
X-MS-Exchange-CrossTenant-Network-Message-Id: 5b84d62a-61a8-457d-c9e0-08dabbe2fec1
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: CO1NAM11FT040.eop-nam11.prod.protection.outlook.com
X-MS-Exchange-CrossTenant-AuthAs: Anonymous
X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem
X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ1PR12MB6171
X-Spam-Status: No, score=-2.2 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH,
        DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FORGED_SPF_HELO,
        SPF_HELO_PASS,SPF_NONE autolearn=ham autolearn_force=no version=3.4.6
X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on
        lindbergh.monkeyblade.net
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

Add dma-channel-mask property in Tegra GPCDMA device tree node.

The property would help to specify the channels to be used in
kernel and reserve few for the firmware. This was previously
achieved by limiting the channel number to 31 in the driver.

Signed-off-by: Akhil R <akhilrajeev@nvidia.com>
---
 arch/arm64/boot/dts/nvidia/tegra186.dtsi | 1 +
 arch/arm64/boot/dts/nvidia/tegra194.dtsi | 1 +
 arch/arm64/boot/dts/nvidia/tegra234.dtsi | 1 +
 3 files changed, 3 insertions(+)

diff --git a/arch/arm64/boot/dts/nvidia/tegra186.dtsi b/arch/arm64/boot/dts/nvidia/tegra186.dtsi
index 6602fe421ee8..60a2277d7f6c 100644
--- a/arch/arm64/boot/dts/nvidia/tegra186.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra186.dtsi
@@ -112,6 +112,7 @@
 		#dma-cells = <1>;
 		iommus = <&smmu TEGRA186_SID_GPCDMA_0>;
 		dma-coherent;
+		dma-channel-mask = <0xfffffffe>;
 		status = "okay";
 	};
 
diff --git a/arch/arm64/boot/dts/nvidia/tegra194.dtsi b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
index 28740c014f1d..88f60442ab3a 100644
--- a/arch/arm64/boot/dts/nvidia/tegra194.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
@@ -176,6 +176,7 @@
 			#dma-cells = <1>;
 			iommus = <&smmu TEGRA194_SID_GPCDMA_0>;
 			dma-coherent;
+			dma-channel-mask = <0xfffffffe>;
 			status = "okay";
 		};
 
diff --git a/arch/arm64/boot/dts/nvidia/tegra234.dtsi b/arch/arm64/boot/dts/nvidia/tegra234.dtsi
index 5d7df32fd159..315539b01149 100644
--- a/arch/arm64/boot/dts/nvidia/tegra234.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra234.dtsi
@@ -61,6 +61,7 @@
 				     <GIC_SPI 106 IRQ_TYPE_LEVEL_HIGH>;
 			#dma-cells = <1>;
 			iommus = <&smmu_niso0 TEGRA234_SID_GPCDMA>;
+			dma-channel-mask = <0xfffffffe>;
 			dma-coherent;
 		};
 
-- 
2.17.1