From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
To: Samuel Holland <samuel@sholland.org>,
Chen-Yu Tsai <wens@csie.org>,
Jernej Skrabec <jernej.skrabec@gmail.com>
Cc: Gregory CLEMENT <gregory.clement@bootlin.com>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Rob Herring <robh+dt@kernel.org>,
devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-sunxi@lists.linux.dev
Subject: Re: [PATCH 1/3] dt-bindings: i2c: mv64xxx: Document DMA properties
Date: Tue, 30 Aug 2022 12:36:31 +0300 [thread overview]
Message-ID: <1c9cb6c2-2030-257d-a50d-dada0ab4449e@linaro.org> (raw)
In-Reply-To: <20220830020824.62288-2-samuel@sholland.org>
On 30/08/2022 05:08, Samuel Holland wrote:
> Allwinner's I2C offload engine includes bidirectional DMA support. Add
> the properties for describing this in the devicetree. "dmas" is optional
> because not all instances of the controller have their DRQs hooked up.
> For example, R_I2C0 and R_I2C1 on V536 have no DRQ number assigned.
>
> Signed-off-by: Samuel Holland <samuel@sholland.org>
Thank you for your patch. There is something to discuss/improve.
> ---
>
> .../bindings/i2c/marvell,mv64xxx-i2c.yaml | 13 +++++++++++++
> 1 file changed, 13 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml b/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml
> index 0ec033e48830..63d665a4f9bb 100644
> --- a/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml
> +++ b/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml
> @@ -66,6 +66,19 @@ properties:
> resets:
> maxItems: 1
>
> + dmas:
> + items:
> + - description: RX DMA Channel
> + - description: TX DMA Channel
> +
> + dma-names:
> + items:
> + - const: rx
> + - const: tx
> +
> +dependencies:
> + dmas: [ dma-names ]
Dependency is not needed. meta-schema has it.
Best regards,
Krzysztof
next prev parent reply other threads:[~2022-08-30 9:36 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-30 2:08 [PATCH 0/3] DMA binding for Allwinner V536/newer I2C Samuel Holland
2022-08-30 2:08 ` [PATCH 1/3] dt-bindings: i2c: mv64xxx: Document DMA properties Samuel Holland
2022-08-30 9:36 ` Krzysztof Kozlowski [this message]
2022-08-30 13:10 ` Samuel Holland
2022-08-30 13:23 ` Krzysztof Kozlowski
2022-09-07 20:02 ` Wolfram Sang
2022-08-30 2:08 ` [PATCH 2/3] arm64: dts: allwinner: a100: Add device node for DMA controller Samuel Holland
2022-09-06 21:09 ` Jernej Škrabec
2022-09-08 20:01 ` Jernej Škrabec
2022-08-30 2:08 ` [PATCH 3/3] arm64: dts: allwinner: a100: Add I2C DMA requests Samuel Holland
2022-09-06 21:11 ` Jernej Škrabec
2022-09-08 20:01 ` Jernej Škrabec
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