From 849ff8190eb9add34c376219b5ae319de83eeb32 Mon Sep 17 00:00:00 2001 From: Yisheng Xie Date: Sat, 6 May 2017 17:49:08 +0800 Subject: staging/android/ion: remove useless document file After commit 9828282e33a0 ("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 Acked-by: Laura Abbott Signed-off-by: Greg Kroah-Hartman --- drivers/staging/android/ion/devicetree.txt | 51 ------------------------------ 1 file changed, 51 deletions(-) delete mode 100644 drivers/staging/android/ion/devicetree.txt (limited to 'drivers/staging/android') diff --git a/drivers/staging/android/ion/devicetree.txt b/drivers/staging/android/ion/devicetree.txt deleted file mode 100644 index 16871527..0000000 --- a/drivers/staging/android/ion/devicetree.txt +++ /dev/null @@ -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>; - }; - } -- cgit v1.1