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staging/android/ion: remove useless document file

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After commit 9828282e33 ("staging: android: ion: Remove old platform
support"), the document about devicetree of ion is no need anymore, so
just remove it.

Signed-off-by: Yisheng Xie <xieyisheng1@huawei.com>
Acked-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Yisheng Xie 2017-05-06 17:49:08 +08:00 committed by Greg Kroah-Hartman
parent 2ea659a9ef
commit 849ff8190e
3 changed files with 0 additions and 83 deletions
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31
Documentation/devicetree/bindings/staging/ion/hi6220-ion.txt
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@ -1,31 +0,0 @@
Hi6220 SoC ION
===================================================================
Required properties:
- compatible : "hisilicon,hi6220-ion"
- list of the ION heaps
- heap name : maybe heap_sys_user@0
- heap id : id should be unique in the system.
- heap base : base ddr address of the heap,0 means that
it is dynamic.
- heap size : memory size and 0 means it is dynamic.
- heap type : the heap type of the heap, please also
see the define in ion.h(drivers/staging/android/uapi/ion.h)
-------------------------------------------------------------------
Example:
hi6220-ion {
compatible = "hisilicon,hi6220-ion";
heap_sys_user@0 {
heap-name = "sys_user";
heap-id = <0x0>;
heap-base = <0x0>;
heap-size = <0x0>;
heap-type = "ion_system";
};
heap_sys_contig@0 {
heap-name = "sys_contig";
heap-id = <0x1>;
heap-base = <0x0>;
heap-size = <0x0>;
heap-type = "ion_system_contig";
};
};

1
MAINTAINERS
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@ -846,7 +846,6 @@ M: Laura Abbott <labbott@redhat.com>
M: Sumit Semwal <sumit.semwal@linaro.org>
L: devel@driverdev.osuosl.org
S: Supported
F: Documentation/devicetree/bindings/staging/ion/
F: drivers/staging/android/ion
F: drivers/staging/android/uapi/ion.h
F: drivers/staging/android/uapi/ion_test.h

51
drivers/staging/android/ion/devicetree.txt
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@ -1,51 +0,0 @@
Ion Memory Manager
Ion is a memory manager that allows for sharing of buffers via dma-buf.
Ion allows for different types of allocation via an abstraction called
a 'heap'. A heap represents a specific type of memory. Each heap has
a different type. There can be multiple instances of the same heap
type.
Specific heap instances are tied to heap IDs. Heap IDs are not to be specified
in the devicetree.
Required properties for Ion
- compatible: "linux,ion" PLUS a compatible property for the device
All child nodes of a linux,ion node are interpreted as heaps
required properties for heaps
- compatible: compatible string for a heap type PLUS a compatible property
for the specific instance of the heap. Current heap types
-- linux,ion-heap-system
-- linux,ion-heap-system-contig
-- linux,ion-heap-carveout
-- linux,ion-heap-chunk
-- linux,ion-heap-dma
-- linux,ion-heap-custom
Optional properties
- memory-region: A phandle to a memory region. Required for DMA heap type
(see reserved-memory.txt for details on the reservation)
Example:
ion {
compatbile = "hisilicon,ion", "linux,ion";
ion-system-heap {
compatbile = "hisilicon,system-heap", "linux,ion-heap-system"
};
ion-camera-region {
compatible = "hisilicon,camera-heap", "linux,ion-heap-dma"
memory-region = <&camera_region>;
};
ion-fb-region {
compatbile = "hisilicon,fb-heap", "linux,ion-heap-dma"
memory-region = <&fb_region>;
};
}