From: Rob Herring <robh@kernel.org>
To: jassisinghbrar@gmail.com
Cc: dmaengine@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, vkoul@kernel.org,
mark.rutland@arm.com, orito.takao@socionext.com,
masami.hiramatsu@linaro.org, kasai.kazuhiro@socionext.com,
Jassi Brar <jaswinder.singh@linaro.org>
Subject: Re: [PATCH 1/2] dt-bindings: milbeaut-m10v-hdmac: Add Socionext Milbeaut HDMAC bindings
Date: Tue, 9 Jul 2019 08:34:37 -0600 [thread overview]
Message-ID: <20190709143437.GA30850@bogus> (raw)
In-Reply-To: <20190613005237.1996-1-jassisinghbrar@gmail.com>
On Wed, Jun 12, 2019 at 07:52:37PM -0500, jassisinghbrar@gmail.com wrote:
> From: Jassi Brar <jaswinder.singh@linaro.org>
>
> Document the devicetree bindings for Socionext Milbeaut HDMAC
> controller. Controller has upto 8 floating channels, that need
> a predefined slave-id to work from a set of slaves.
>
> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
> ---
> .../bindings/dma/milbeaut-m10v-hdmac.txt | 54 +++++++++++++++++++
> 1 file changed, 54 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/dma/milbeaut-m10v-hdmac.txt
>
> diff --git a/Documentation/devicetree/bindings/dma/milbeaut-m10v-hdmac.txt b/Documentation/devicetree/bindings/dma/milbeaut-m10v-hdmac.txt
> new file mode 100644
> index 000000000000..a104fcb9e73d
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/dma/milbeaut-m10v-hdmac.txt
> @@ -0,0 +1,51 @@
> +* Milbeaut AHB DMA Controller
> +
> +Milbeaut AHB DMA controller has transfer capability bellow.
> + - memory to memory transfer
> + - device to memory transfer
> + - memory to device transfer
> +
> +Required property:
> +- compatible: Should be "socionext,milbeaut-m10v-hdmac"
> +- reg: Should contain DMA registers location and length.
> +- interrupts: Should contain all of the per-channel DMA interrupts.
How many?
> +- #dma-cells: Should be 1. Specify the ID of the slave.
> +- clocks: Phandle to the clock used by the HDMAC module.
> +
> +
> +Example:
> +
> + hdmac1: hdmac@1e110000 {
dma-controller@...
> + compatible = "socionext,milbeaut-m10v-hdmac";
> + reg = <0x1e110000 0x10000>;
> + interrupts = <0 132 4>,
> + <0 133 4>,
> + <0 134 4>,
> + <0 135 4>,
> + <0 136 4>,
> + <0 137 4>,
> + <0 138 4>,
> + <0 139 4>;
> + #dma-cells = <1>;
> + clocks = <&dummy_clk>;
> + };
> +
> +* DMA client
> +
> +Clients have to specify the DMA requests with phandles in a list.
Nothing specific to this binding here and the client side is already
documented, so drop this section.
> +
> +Required properties:
> +- dmas: List of one or more DMA request specifiers. One DMA request specifier
> + consists of a phandle to the DMA controller followed by the integer
> + specifying the request line.
> +- dma-names: List of string identifiers for the DMA requests. For the correct
> + names, have a look at the specific client driver.
> +
> +Example:
> +
> + sni_spi1: spi@1e800100 {
> + ...
> + dmas = <&hdmac1 22>, <&hdmac1 21>;
> + dma-names = "tx", "rx";
> + ...
> + };
> --
> 2.17.1
>
next prev parent reply other threads:[~2019-07-09 14:34 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-13 0:51 [PATCH 0/2] Add support for AHB DMA controller on Milbeaut series jassisinghbrar
2019-06-13 0:52 ` [PATCH 1/2] dt-bindings: milbeaut-m10v-hdmac: Add Socionext Milbeaut HDMAC bindings jassisinghbrar
2019-07-09 14:34 ` Rob Herring [this message]
2019-07-10 4:12 ` Jassi Brar
2019-07-10 13:48 ` Rob Herring
2019-06-13 0:52 ` [PATCH 2/2] dmaengine: milbeaut-hdmac: Add HDMAC driver for Milbeaut platforms jassisinghbrar
2019-06-24 6:44 ` Vinod Koul
2019-08-16 2:25 ` Jassi Brar
2019-08-16 4:43 ` Vinod Koul
2019-08-18 5:16 ` [PATCH v2 0/2] Add support for AHB DMA controller on Milbeaut series jassisinghbrar
2019-08-18 5:17 ` [PATCH v2 1/2] dt-bindings: milbeaut-m10v-hdmac: Add Socionext Milbeaut HDMAC bindings jassisinghbrar
2019-08-27 16:31 ` Rob Herring
2019-09-04 5:50 ` Vinod Koul
2019-09-04 6:18 ` Jassi Brar
2019-09-06 5:12 ` Vinod Koul
2019-08-18 5:18 ` [PATCH v2 2/2] dmaengine: milbeaut-hdmac: Add HDMAC driver for Milbeaut platforms jassisinghbrar
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