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authorRichard Zhu <hongxing.zhu@nxp.com>2017-05-26 16:41:46 +0800
committerLeonard Crestez <leonard.crestez@nxp.com>2018-08-24 12:41:33 +0300
commit3ce2f046d086ce2eeea131427b81df3bd5ca243d (patch)
tree07152c29ea80177de0958cc130614ea5c4ec52bc /Documentation/devicetree/bindings/dma/fsl-imx-dma.txt
parentc64898abe3dbfc35cd11ec8cb2c2d682107e6f6f (diff)
MLK-15064-1 ARM: imx: pcie: enable imx8 pcie
- use one standalone hsio node to share the region to pciea, pcieb and sata. - axi master slave and dbi clks and pipe_clk are required - enable pcieb change the pd of the pcieb, otherwise, clk is failed to enable - add the cpu addr offset Bit[31:24] pciea 60 - 6f ---> 40 - 4f pcieb 70 - 7f ---> 80 - 8f Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com> Reviewed-by: Frank Li <frank.li@nxp.com>
Diffstat (limited to 'Documentation/devicetree/bindings/dma/fsl-imx-dma.txt')
-rw-r--r--Documentation/devicetree/bindings/dma/fsl-imx-dma.txt15
1 files changed, 15 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/dma/fsl-imx-dma.txt b/Documentation/devicetree/bindings/dma/fsl-imx-dma.txt
index 7bd8847d6394..63010924d42a 100644
--- a/Documentation/devicetree/bindings/dma/fsl-imx-dma.txt
+++ b/Documentation/devicetree/bindings/dma/fsl-imx-dma.txt
@@ -46,3 +46,18 @@ Example:
dma-names = "rx-tx";
...
};
+
+* DMA capability limitation
+
+Specify the DMA capability limitations.
+For example, some SoCs only support up to 32bit DMA capability, although
+they are 64bit SoCs.
+
+- only-dma-mask32: 1 means that the SoCs only suppot up to 32bit DMA
+ capability.
+
+Example:
+ dma_cap: dma_cap {
+ compatible = "dma-capability";
+ only-dma-mask32 = <1>;
+ };