From: Padmavathi Venna <padma.v@samsung.com> To: linux-samsung-soc@vger.kernel.org, devicetree-discuss@lists.ozlabs.org, linux-arm-kernel@lists.infradead.org, padma.v@samsung.com, padma.kvr@gmail.com Cc: sbkim73@samsung.com, broonie@opensource.wolfsonmicro.com, kgene.kim@samsung.com, jassisinghbrar@gmail.com, arnd@arndb.de, vinod.koul@intel.com, grant.likely@secretlab.ca, jon-hunter@ti.com, boojin.kim@samsung.com, thomas.abraham@linaro.org, robherring2@gmail.com Subject: [PATCH V4 4/5] ARM: dts: pl330: Add #dma-cells for generic dma binding support Date: Mon, 11 Feb 2013 14:08:24 +0530 [thread overview] Message-ID: <1360571905-15285-5-git-send-email-padma.v@samsung.com> (raw) In-Reply-To: <1360571905-15285-1-git-send-email-padma.v@samsung.com> This patch adds #dma-cells property to PL330 DMA controller nodes for supporting generic dma dt bindings on samsung exynos5250 platform. Signed-off-by: Padmavathi Venna <padma.v@samsung.com> Acked-by: Arnd Bergmann <arnd@arndb.de> --- .../devicetree/bindings/dma/arm-pl330.txt | 21 +++++++++++++++---- arch/arm/boot/dts/exynos5250.dtsi | 12 +++++++++++ 2 files changed, 28 insertions(+), 5 deletions(-) diff --git a/Documentation/devicetree/bindings/dma/arm-pl330.txt b/Documentation/devicetree/bindings/dma/arm-pl330.txt index 36e27d5..2675658 100644 --- a/Documentation/devicetree/bindings/dma/arm-pl330.txt +++ b/Documentation/devicetree/bindings/dma/arm-pl330.txt @@ -10,7 +10,11 @@ Required properties: - interrupts: interrupt number to the cpu. Optional properties: -- dma-coherent : Present if dma operations are coherent + - dma-coherent : Present if dma operations are coherent + - #dma-cells: must be <1>. used to represent the number of integer + cells in the dmas property of client device. + - dma-channels: contains the total number of DMA channels supported by the DMAC + - dma-requests: contains the total number of DMA requests supported by the DMAC Example: @@ -18,16 +22,23 @@ Example: compatible = "arm,pl330", "arm,primecell"; reg = <0x12680000 0x1000>; interrupts = <99>; + #dma-cells = <1>; + #dma-channels = <8>; + #dma-requests = <32>; }; Client drivers (device nodes requiring dma transfers from dev-to-mem or -mem-to-dev) should specify the DMA channel numbers using a two-value pair +mem-to-dev) should specify the DMA channel numbers and dma channel names as shown below. [property name] = <[phandle of the dma controller] [dma request id]>; + [property name] = <[dma channel name]> where 'dma request id' is the dma request number which is connected - to the client controller. The 'property name' is recommended to be - of the form <name>-dma-channel. + to the client controller. The 'property name' 'dmas' and 'dma-names' + as required by the generic dma device tree binding helpers. The dma + names correspond 1:1 with the dma request ids in the dmas property. - Example: tx-dma-channel = <&pdma0 12>; + Example: dmas = <&pdma0 12 + &pdma1 11>; + dma-names = "tx", "rx"; diff --git a/arch/arm/boot/dts/exynos5250.dtsi b/arch/arm/boot/dts/exynos5250.dtsi index f50b4e8..b1ac73e 100644 --- a/arch/arm/boot/dts/exynos5250.dtsi +++ b/arch/arm/boot/dts/exynos5250.dtsi @@ -312,24 +312,36 @@ compatible = "arm,pl330", "arm,primecell"; reg = <0x121A0000 0x1000>; interrupts = <0 34 0>; + #dma-cells = <1>; + #dma-channels = <8>; + #dma-requests = <32>; }; pdma1: pdma@121B0000 { compatible = "arm,pl330", "arm,primecell"; reg = <0x121B0000 0x1000>; interrupts = <0 35 0>; + #dma-cells = <1>; + #dma-channels = <8>; + #dma-requests = <32>; }; mdma0: mdma@10800000 { compatible = "arm,pl330", "arm,primecell"; reg = <0x10800000 0x1000>; interrupts = <0 33 0>; + #dma-cells = <1>; + #dma-channels = <8>; + #dma-requests = <1>; }; mdma1: mdma@11C10000 { compatible = "arm,pl330", "arm,primecell"; reg = <0x11C10000 0x1000>; interrupts = <0 124 0>; + #dma-cells = <1>; + #dma-channels = <8>; + #dma-requests = <1>; }; }; -- 1.7.4.4
WARNING: multiple messages have this Message-ID (diff)
From: padma.v@samsung.com (Padmavathi Venna) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH V4 4/5] ARM: dts: pl330: Add #dma-cells for generic dma binding support Date: Mon, 11 Feb 2013 14:08:24 +0530 [thread overview] Message-ID: <1360571905-15285-5-git-send-email-padma.v@samsung.com> (raw) In-Reply-To: <1360571905-15285-1-git-send-email-padma.v@samsung.com> This patch adds #dma-cells property to PL330 DMA controller nodes for supporting generic dma dt bindings on samsung exynos5250 platform. Signed-off-by: Padmavathi Venna <padma.v@samsung.com> Acked-by: Arnd Bergmann <arnd@arndb.de> --- .../devicetree/bindings/dma/arm-pl330.txt | 21 +++++++++++++++---- arch/arm/boot/dts/exynos5250.dtsi | 12 +++++++++++ 2 files changed, 28 insertions(+), 5 deletions(-) diff --git a/Documentation/devicetree/bindings/dma/arm-pl330.txt b/Documentation/devicetree/bindings/dma/arm-pl330.txt index 36e27d5..2675658 100644 --- a/Documentation/devicetree/bindings/dma/arm-pl330.txt +++ b/Documentation/devicetree/bindings/dma/arm-pl330.txt @@ -10,7 +10,11 @@ Required properties: - interrupts: interrupt number to the cpu. Optional properties: -- dma-coherent : Present if dma operations are coherent + - dma-coherent : Present if dma operations are coherent + - #dma-cells: must be <1>. used to represent the number of integer + cells in the dmas property of client device. + - dma-channels: contains the total number of DMA channels supported by the DMAC + - dma-requests: contains the total number of DMA requests supported by the DMAC Example: @@ -18,16 +22,23 @@ Example: compatible = "arm,pl330", "arm,primecell"; reg = <0x12680000 0x1000>; interrupts = <99>; + #dma-cells = <1>; + #dma-channels = <8>; + #dma-requests = <32>; }; Client drivers (device nodes requiring dma transfers from dev-to-mem or -mem-to-dev) should specify the DMA channel numbers using a two-value pair +mem-to-dev) should specify the DMA channel numbers and dma channel names as shown below. [property name] = <[phandle of the dma controller] [dma request id]>; + [property name] = <[dma channel name]> where 'dma request id' is the dma request number which is connected - to the client controller. The 'property name' is recommended to be - of the form <name>-dma-channel. + to the client controller. The 'property name' 'dmas' and 'dma-names' + as required by the generic dma device tree binding helpers. The dma + names correspond 1:1 with the dma request ids in the dmas property. - Example: tx-dma-channel = <&pdma0 12>; + Example: dmas = <&pdma0 12 + &pdma1 11>; + dma-names = "tx", "rx"; diff --git a/arch/arm/boot/dts/exynos5250.dtsi b/arch/arm/boot/dts/exynos5250.dtsi index f50b4e8..b1ac73e 100644 --- a/arch/arm/boot/dts/exynos5250.dtsi +++ b/arch/arm/boot/dts/exynos5250.dtsi @@ -312,24 +312,36 @@ compatible = "arm,pl330", "arm,primecell"; reg = <0x121A0000 0x1000>; interrupts = <0 34 0>; + #dma-cells = <1>; + #dma-channels = <8>; + #dma-requests = <32>; }; pdma1: pdma at 121B0000 { compatible = "arm,pl330", "arm,primecell"; reg = <0x121B0000 0x1000>; interrupts = <0 35 0>; + #dma-cells = <1>; + #dma-channels = <8>; + #dma-requests = <32>; }; mdma0: mdma at 10800000 { compatible = "arm,pl330", "arm,primecell"; reg = <0x10800000 0x1000>; interrupts = <0 33 0>; + #dma-cells = <1>; + #dma-channels = <8>; + #dma-requests = <1>; }; mdma1: mdma at 11C10000 { compatible = "arm,pl330", "arm,primecell"; reg = <0x11C10000 0x1000>; interrupts = <0 124 0>; + #dma-cells = <1>; + #dma-channels = <8>; + #dma-requests = <1>; }; }; -- 1.7.4.4
next prev parent reply other threads:[~2013-02-11 8:38 UTC|newest] Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top 2013-02-11 8:38 [PATCH V4 0/5] Add generic DMA DT binding support Padmavathi Venna 2013-02-11 8:38 ` Padmavathi Venna 2013-02-11 8:38 ` [PATCH V4 1/5] DMA: PL330: Add new pl330 filter for DT case Padmavathi Venna 2013-02-11 8:38 ` Padmavathi Venna 2013-02-11 8:38 ` [PATCH V4 2/5] DMA: PL330: Add xlate function Padmavathi Venna 2013-02-11 8:38 ` Padmavathi Venna 2013-02-11 8:38 ` [PATCH V4 3/5] DMA: PL330: Register the DMA controller with the generic DMA helpers Padmavathi Venna 2013-02-11 8:38 ` Padmavathi Venna 2013-02-11 8:38 ` Padmavathi Venna [this message] 2013-02-11 8:38 ` [PATCH V4 4/5] ARM: dts: pl330: Add #dma-cells for generic dma binding support Padmavathi Venna 2013-02-11 8:38 ` [PATCH V4 5/5] ARM: SAMSUNG: dma: Remove unnecessary code Padmavathi Venna 2013-02-11 8:38 ` Padmavathi Venna 2013-02-12 14:49 ` [PATCH V4 0/5] Add generic DMA DT binding support Vinod Koul 2013-02-12 14:49 ` Vinod Koul 2013-02-13 4:22 ` Padma Venkat 2013-02-13 4:22 ` Padma Venkat 2013-02-14 4:47 ` Vinod Koul 2013-02-14 4:47 ` Vinod Koul 2013-02-14 5:42 ` Padma Venkat 2013-02-14 5:42 ` Padma Venkat 2013-02-14 9:39 ` Vinod Koul 2013-02-14 9:39 ` Vinod Koul
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