linux-kernel - [PATCH 2/3] arm64: tegra: Add dma-channel-mask in GPCDMA node

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Date:   Tue, 13 Sep 2022 21:22:50 +0530
From:   Akhil R <akhilrajeev@...dia.com>
To:     <ldewangan@...dia.com>, <jonathanh@...dia.com>, <vkoul@...nel.org>,
        <thierry.reding@...il.com>, <p.zabel@...gutronix.de>,
        <dmaengine@...r.kernel.org>, <linux-tegra@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
CC:     <akhilrajeev@...dia.com>
Subject: [PATCH 2/3] arm64: tegra: Add dma-channel-mask in GPCDMA node

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.
Now since we can list all 32 channels, update the interrupts
property as well to list all 32 interrupts.

Signed-off-by: Akhil R <akhilrajeev@...dia.com>
---
 arch/arm64/boot/dts/nvidia/tegra186.dtsi | 4 +++-
 arch/arm64/boot/dts/nvidia/tegra194.dtsi | 4 +++-
 arch/arm64/boot/dts/nvidia/tegra234.dtsi | 4 +++-
 3 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/boot/dts/nvidia/tegra186.dtsi b/arch/arm64/boot/dts/nvidia/tegra186.dtsi
index 3580fbf99091..13a84e34e094 100644
--- a/arch/arm64/boot/dts/nvidia/tegra186.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra186.dtsi
@@ -78,7 +78,8 @@
 		reg = <0x0 0x2600000 0x0 0x210000>;
 		resets = <&bpmp TEGRA186_RESET_GPCDMA>;
 		reset-names = "gpcdma";
-		interrupts = <GIC_SPI 76 IRQ_TYPE_LEVEL_HIGH>,
+		interrupts = <GIC_SPI 75 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 76 IRQ_TYPE_LEVEL_HIGH>,
 			     <GIC_SPI 77 IRQ_TYPE_LEVEL_HIGH>,
 			     <GIC_SPI 78 IRQ_TYPE_LEVEL_HIGH>,
 			     <GIC_SPI 79 IRQ_TYPE_LEVEL_HIGH>,
@@ -112,6 +113,7 @@
 		#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 9176c4b27133..593fbf22b34f 100644
--- a/arch/arm64/boot/dts/nvidia/tegra194.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
@@ -142,7 +142,8 @@
 			reg = <0x2600000 0x210000>;
 			resets = <&bpmp TEGRA194_RESET_GPCDMA>;
 			reset-names = "gpcdma";
-			interrupts = <GIC_SPI 76 IRQ_TYPE_LEVEL_HIGH>,
+			interrupts = <GIC_SPI 75 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 76 IRQ_TYPE_LEVEL_HIGH>,
 				     <GIC_SPI 77 IRQ_TYPE_LEVEL_HIGH>,
 				     <GIC_SPI 78 IRQ_TYPE_LEVEL_HIGH>,
 				     <GIC_SPI 79 IRQ_TYPE_LEVEL_HIGH>,
@@ -176,6 +177,7 @@
 			#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 5852e765ad90..afd90b72cdea 100644
--- a/arch/arm64/boot/dts/nvidia/tegra234.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra234.dtsi
@@ -28,7 +28,8 @@
 			reg = <0x2600000 0x210000>;
 			resets = <&bpmp TEGRA234_RESET_GPCDMA>;
 			reset-names = "gpcdma";
-			interrupts = <GIC_SPI 76 IRQ_TYPE_LEVEL_HIGH>,
+			interrupts = <GIC_SPI 75 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 76 IRQ_TYPE_LEVEL_HIGH>,
 				     <GIC_SPI 77 IRQ_TYPE_LEVEL_HIGH>,
 				     <GIC_SPI 78 IRQ_TYPE_LEVEL_HIGH>,
 				     <GIC_SPI 79 IRQ_TYPE_LEVEL_HIGH>,
@@ -61,6 +62,7 @@
 				     <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