Documentation for hi6220 SoC ION node
Signed-off-by: Chen Feng <[email protected]>
Signed-off-by: Yu Dongbin <[email protected]>
---
.../devicetree/bindings/staging/ion/hi6220-ion.txt | 31 ++++++++++++++++++++++
1 file changed, 31 insertions(+)
create mode 100644 Documentation/devicetree/bindings/staging/ion/hi6220-ion.txt
diff --git a/Documentation/devicetree/bindings/staging/ion/hi6220-ion.txt
b/Documentation/devicetree/bindings/staging/ion/hi6220-ion.txt
new file mode 100644
index 0000000..97ba233
--- /dev/null
+++ b/Documentation/devicetree/bindings/staging/ion/hi6220-ion.txt
@@ -0,0 +1,31 @@
+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";
+ };
+ };
--
1.9.1
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