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

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Message-ID: <4cb9745d-4bc1-57f0-f4ee-c12089d0c190@gmail.com>
Date:   Fri, 6 Oct 2017 00:30:59 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Rob Herring <robh@...nel.org>
Cc:     Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.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>,
        Vinod Koul <vinod.koul@...el.com>, 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 05.10.2017 23:33, Rob Herring wrote:
> On Tue, Sep 26, 2017 at 02:22:04AM +0300, 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.
>> +
>> +Example:
>> +
>> +ahbdma: ahbdma@...08000  {
> 
> Use standard node names. dma-controller in this case.
> 

Okay, I'll change it in v3. Thank you for the comment.

>> +	compatible = "nvidia,tegra20-ahbdma";
>> +	reg = <0x60008000 0x2000>;
>> +	interrupts = <GIC_SPI 27 IRQ_TYPE_LEVEL_HIGH>;
>> +	clocks = <&tegra_car TEGRA20_CLK_AHBDMA>;
>> +	resets = <&tegra_car 33>;
>> +	#dma-cells = <1>;
>> +};
>> -- 
>> 2.14.1
>>