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SubjectRe: [PATCH v2 4/4] arm: dts: ls1021a: Enable I2C DMA support
Hello,

expanding Cc a bit to include Shawn and the kernel teams of Pengutronix
and NXP.

On Mon, Jul 09, 2018 at 11:43:04AM +0200, Esben Haabendal wrote:
> From: Esben Haabendal <eha@deif.com>
>
> Gives substantial performance improvement for transfers larger than 16
> bytes (DMA_THRESHOLD). Smaller transfers are unaffected.
>
> Signed-off-by: Esben Haabendal <eha@deif.com>
> ---
> arch/arm/boot/dts/ls1021a.dtsi | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/arch/arm/boot/dts/ls1021a.dtsi b/arch/arm/boot/dts/ls1021a.dtsi
> index c55d479971cc..1e5640701c65 100644
> --- a/arch/arm/boot/dts/ls1021a.dtsi
> +++ b/arch/arm/boot/dts/ls1021a.dtsi
> @@ -363,6 +363,8 @@
> interrupts = <GIC_SPI 88 IRQ_TYPE_LEVEL_HIGH>;
> clock-names = "i2c";
> clocks = <&clockgen 4 1>;
> + dma-names = "tx", "rx";
> + dmas = <&edma0 1 39>, <&edma0 1 38>;
> status = "disabled";
> };
>
> @@ -374,6 +376,8 @@
> interrupts = <GIC_SPI 89 IRQ_TYPE_LEVEL_HIGH>;
> clock-names = "i2c";
> clocks = <&clockgen 4 1>;
> + dma-names = "tx", "rx";
> + dmas = <&edma0 1 37>, <&edma0 1 36>;
> status = "disabled";
> };
>
> @@ -385,6 +389,8 @@
> interrupts = <GIC_SPI 90 IRQ_TYPE_LEVEL_HIGH>;
> clock-names = "i2c";
> clocks = <&clockgen 4 1>;
> + dma-names = "tx", "rx";
> + dmas = <&edma0 1 35>, <&edma0 1 34>;
> status = "disabled";
> };

This is a bit orthogonal to the other changes in this series and needs
at least an ack from Shawn. Looks ok in my eyes.

Best regards
Uwe

--
Pengutronix e.K. | Uwe Kleine-König |
Industrial Linux Solutions | http://www.pengutronix.de/ |

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