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ARM: EXYNOS: Add #dma-cells for generic dma binding support for PL330

This change “ARM: EXYNOS: Add #dma-cells for generic dma binding support for PL330” (commit 0a96d4d) in Linux kernel is authored by Padmavathi Venna <padma.v [at] samsung.com> on Thu Mar 7 10:33:07 2013 +0900.

Description of "ARM: EXYNOS: Add #dma-cells for generic dma binding support for PL330"

The change “ARM: EXYNOS: Add #dma-cells for generic dma binding support for PL330” introduces changes as follows.

ARM: EXYNOS: Add #dma-cells for generic dma binding support for PL330

This patch adds #dma-cells property to PL330 DMA controller
nodes for supporting generic dma dt bindings on samsung exynos
platforms. #dma-channels and #dma-requests are not required now
but added in advance.

Signed-off-by: Padmavathi Venna <padma.v@samsung.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

Linux kernel releases containing commit 0a96d4d

The Linux kernel releases containing this commit are as follows.

Linux kernel code changes from "ARM: EXYNOS: Add #dma-cells for generic dma binding support for PL330"

There are 15 lines of Linux source code added/deleted in this change. Code changes to Linux kernel are as follows.

 arch/arm/boot/dts/exynos4.dtsi    | 9 +++++++++
 arch/arm/boot/dts/exynos5440.dtsi | 6 ++++++
 2 files changed, 15 insertions(+)
 
diff --git a/arch/arm/boot/dts/exynos4.dtsi b/arch/arm/boot/dts/exynos4.dtsi
index e1347fceb5bc..1a62bcf18aa3 100644
--- a/arch/arm/boot/dts/exynos4.dtsi
+++ b/arch/arm/boot/dts/exynos4.dtsi
@@ -275,18 +275,27 @@
 			compatible = "arm,pl330", "arm,primecell";
 			reg = <0x12680000 0x1000>;
 			interrupts = <0 35 0>;
+			#dma-cells = <1>;
+			#dma-channels = <8>;
+			#dma-requests = <32>;
 		};
 
 		pdma1: pdma@12690000 {
 			compatible = "arm,pl330", "arm,primecell";
 			reg = <0x12690000 0x1000>;
 			interrupts = <0 36 0>;
+			#dma-cells = <1>;
+			#dma-channels = <8>;
+			#dma-requests = <32>;
 		};
 
 		mdma1: mdma@12850000 {
 			compatible = "arm,pl330", "arm,primecell";
 			reg = <0x12850000 0x1000>;
 			interrupts = <0 34 0>;
+			#dma-cells = <1>;
+			#dma-channels = <8>;
+			#dma-requests = <1>;
 		};
 	};
 };
diff --git a/arch/arm/boot/dts/exynos5440.dtsi b/arch/arm/boot/dts/exynos5440.dtsi
index 5f3562ad6746..9a99755920c0 100644
--- a/arch/arm/boot/dts/exynos5440.dtsi
+++ b/arch/arm/boot/dts/exynos5440.dtsi
@@ -142,12 +142,18 @@
 			compatible = "arm,pl330", "arm,primecell";
 			reg = <0x120000 0x1000>;
 			interrupts = <0 34 0>;
+			#dma-cells = <1>;
+			#dma-channels = <8>;
+			#dma-requests = <32>;
 		};
 
 		pdma1: pdma@121B0000 {
 			compatible = "arm,pl330", "arm,primecell";
 			reg = <0x121000 0x1000>;
 			interrupts = <0 35 0>;
+			#dma-cells = <1>;
+			#dma-channels = <8>;
+			#dma-requests = <32>;
 		};
 	};
 

The commit for this change in Linux stable tree is 0a96d4d (patch).

Last modified: 2020/02/10