docs: dts: Add documentation for hi6220 SoC ION node
Documentation for hi6220 SoC ION node Signed-off-by: Chen Feng <puck.chen@hisilicon.com> Signed-off-by: Yu Dongbin <yudongbin@hisilicon.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Hi6220 SoC ION
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===================================================================
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Required properties:
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- compatible : "hisilicon,hi6220-ion"
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- list of the ION heaps
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- heap name : maybe heap_sys_user@0
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- heap id : id should be unique in the system.
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- heap base : base ddr address of the heap,0 means that
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it is dynamic.
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- heap size : memory size and 0 means it is dynamic.
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- heap type : the heap type of the heap, please also
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see the define in ion.h(drivers/staging/android/uapi/ion.h)
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-------------------------------------------------------------------
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Example:
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hi6220-ion {
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compatible = "hisilicon,hi6220-ion";
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heap_sys_user@0 {
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heap-name = "sys_user";
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heap-id = <0x0>;
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heap-base = <0x0>;
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heap-size = <0x0>;
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heap-type = "ion_system";
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};
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heap_sys_contig@0 {
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heap-name = "sys_contig";
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heap-id = <0x1>;
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heap-base = <0x0>;
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heap-size = <0x0>;
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heap-type = "ion_system_contig";
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};
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};
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