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SubjectRe: [PATCH] arm64: dts: ls1028a: put SAIs into async mode
+ Alison Wang

On Fri, Nov 29, 2019 at 10:09:37PM +0100, Michael Walle wrote:
> The LS1028A SoC has only unidirectional SAIs. Therefore, it doesn't make
> sense to have the RX and TX part synchronous. Even worse, the RX part
> wont work out of the box because by default it is configured as
> synchronous to the TX part. And as said before, the pinmux of the SoC
> can only be configured to route either the RX or the TX signals to the
> SAI but never both at the same time. Thus configure the asynchronous
> mode by default.
>
> Signed-off-by: Michael Walle <michael@walle.cc>

Alison, Leo,

Looks good to you?

Shawn

> ---
> arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi b/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
> index 379913756e90..9be33426e5ce 100644
> --- a/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
> +++ b/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
> @@ -637,6 +637,7 @@
> dma-names = "tx", "rx";
> dmas = <&edma0 1 4>,
> <&edma0 1 3>;
> + fsl,sai-asynchronous;
> status = "disabled";
> };
>
> @@ -651,6 +652,7 @@
> dma-names = "tx", "rx";
> dmas = <&edma0 1 6>,
> <&edma0 1 5>;
> + fsl,sai-asynchronous;
> status = "disabled";
> };
>
> @@ -665,6 +667,7 @@
> dma-names = "tx", "rx";
> dmas = <&edma0 1 8>,
> <&edma0 1 7>;
> + fsl,sai-asynchronous;
> status = "disabled";
> };
>
> @@ -679,6 +682,7 @@
> dma-names = "tx", "rx";
> dmas = <&edma0 1 10>,
> <&edma0 1 9>;
> + fsl,sai-asynchronous;
> status = "disabled";
> };
>
> @@ -693,6 +697,7 @@
> dma-names = "tx", "rx";
> dmas = <&edma0 1 12>,
> <&edma0 1 11>;
> + fsl,sai-asynchronous;
> status = "disabled";
> };
>
> @@ -707,6 +712,7 @@
> dma-names = "tx", "rx";
> dmas = <&edma0 1 14>,
> <&edma0 1 13>;
> + fsl,sai-asynchronous;
> status = "disabled";
> };
>
> --
> 2.20.1
>

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