RE: [EXT] [PATCH 2/2] arm64: dts: ls1028a: add "fsl,vf610-edma" compatible

Peng Ma
2020-03-07T02:09:42Z

>-----Original Message-----
>From: Michael Walle <michael@walle.cc>
>Sent: 2020年3月7日 4:54
>To: dmaengine@vger.kernel.org; devicetree@vger.kernel.org;
>linux-kernel@vger.kernel.org; linux-arm-kernel@lists.infradead.org
>Cc: Vinod Koul <vkoul@kernel.org>; Rob Herring <robh+dt@kernel.org>; Mark
>Rutland <mark.rutland@arm.com>; Shawn Guo <shawnguo@kernel.org>; Leo Li
><leoyang.li@nxp.com>; Peng Ma <peng.ma@nxp.com>; Michael Walle
><michael@walle.cc>
>Subject: [EXT] [PATCH 2/2] arm64: dts: ls1028a: add "fsl,vf610-edma"
>compatible
>
>Caution: EXT Email
>
>The bootloader does the IOMMU fixup and dynamically adds the "iommus"
>property to devices according to its compatible string. In case of the eDMA
>controller this property is missing. Add it. After that the IOMMU will work with
>the eDMA core.
>
>Signed-off-by: Michael Walle <michael@walle.cc>
>---
> arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
>diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
>b/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
>index b152fa90cf5c..aa467bff2209 100644
>--- a/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
>+++ b/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
>@@ -447,7 +447,7 @@
>
> edma0: dma-controller@22c0000 {
> #dma-cells = <2>;
>- compatible = "fsl,ls1028a-edma";
>+ compatible = "fsl,ls1028a-edma",
>+ "fsl,vf610-edma";
Hi Michael,

You should change it on bootloader instead of kernel, Some Reg of LS1028a is different
from others, So we used compatible "fsl,ls1028a-edm" to distinguish " fsl,vf610-edma".

Thanks,
Peng
> reg = <0x0 0x22c0000 0x0 0x10000>,
> <0x0 0x22d0000 0x0 0x10000>,
> <0x0 0x22e0000 0x0 0x10000>;
>--
>2.20.1