modify sin led gpio

hc

2024-05-13 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e

 kernel/Documentation/devicetree/bindings/iommu/iommu.txt
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@@ -86,6 +86,12 @@
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 disable the IOMMU's device tree node in the first place because it would
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 prevent any driver from properly setting up the translations.
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+Optional properties:
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+--------------------
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+- pasid-num-bits: Some masters support multiple address spaces for DMA, by
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+  tagging DMA transactions with an address space identifier. By default,
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+  this is 0, which means that the device only has one address space.
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+
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 Notes:
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 ======