linux-kernel - Re: [PATCH v1 3/5] dt-bindings: Add DT bindings for NVIDIA Tegra AHB DMA controller

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Message-ID: <bee2a524-0891-01e1-4e03-f6cf6a89e6b1@nvidia.com>
Date:   Tue, 26 Sep 2017 15:50:03 +0100
From:   Jon Hunter <jonathanh@...dia.com>
To:     Dmitry Osipenko <digetx@...il.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Laxman Dewangan <ldewangan@...dia.com>,
        "Peter De Schrijver" <pdeschrijver@...dia.com>,
        Prashant Gaikwad <pgaikwad@...dia.com>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...eaurora.org>,
        Rob Herring <robh+dt@...nel.org>,
        Vinod Koul <vinod.koul@...el.com>
CC:     <linux-tegra@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <dmaengine@...r.kernel.org>, <linux-clk@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v1 3/5] dt-bindings: Add DT bindings for NVIDIA Tegra AHB
 DMA controller


On 26/09/17 00:22, Dmitry Osipenko wrote:
> Document DT bindings for NVIDIA Tegra AHB DMA controller that presents
> on Tegra20/30 SoC's.
> 
> Signed-off-by: Dmitry Osipenko <digetx@...il.com>
> ---
>  .../bindings/dma/nvidia,tegra20-ahbdma.txt         | 23 ++++++++++++++++++++++
>  1 file changed, 23 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/dma/nvidia,tegra20-ahbdma.txt
> 
> diff --git a/Documentation/devicetree/bindings/dma/nvidia,tegra20-ahbdma.txt b/Documentation/devicetree/bindings/dma/nvidia,tegra20-ahbdma.txt
> new file mode 100644
> index 000000000000..2af9aa76ae11
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/dma/nvidia,tegra20-ahbdma.txt
> @@ -0,0 +1,23 @@
> +* NVIDIA Tegra AHB DMA controller
> +
> +Required properties:
> +- compatible:	Must be "nvidia,tegra20-ahbdma"
> +- reg:		Should contain registers base address and length.
> +- interrupts:	Should contain one entry, DMA controller interrupt.
> +- clocks:	Should contain one entry, DMA controller clock.
> +- resets :	Should contain one entry, DMA controller reset.
> +- #dma-cells:	Should be <1>. The cell represents DMA request select value
> +		for the peripheral. For more details consult the Tegra TRM's
> +		documentation, in particular AHB DMA channel control register
> +		REQ_SEL field.

What about the TRIG_SEL field? Do we need to handle this here as well?

Cheers
Jon

-- 
nvpublic