Lines Matching full:memory

1 *** Reserved memory regions ***
3 Reserved memory is specified as a node under the /reserved-memory node.
4 The operating system shall exclude reserved memory from normal usage
6 normal use) memory regions. Such memory regions are usually designed for
9 Parameters for each memory region can be encoded into the device tree
12 /reserved-memory node
19 /reserved-memory/ child nodes
21 Each child of the reserved-memory node specifies one or more regions of
22 reserved memory. Each child node may either use a 'reg' property to
23 specify a specific range of reserved memory, or a 'size' property with
24 optional constraints to request a dynamically allocated block of memory.
37                    - Size in bytes of memory to reserve.
41                            - Specifies regions of memory that are
50         - shared-dma-pool: This indicates a region of memory meant to be
54         - restricted-dma-pool: This indicates a region of memory meant to be
56           memory region would be the only region accessible to those devices.
61           which could result in the DMA accessing the system memory at
66           system memory corruption, the system needs to provide way to lock down
67           the memory access, e.g., MPU. Note that since coherent allocation
74       of the region as part of its standard mapping of system memory,
78     - The operating system can use the memory in this region with the
89   region for the default pool of the contiguous memory allocator.
94 Device node references to reserved memory
96 Regions in the /reserved-memory node may be referenced by other device
97 nodes by adding a memory-region property to the device node.
99 memory-region (optional) - phandle, specifier pairs to children of /reserved-memory
100 memory-region-names (optional) - a list of names, one for each corresponding
101   entry in the memory-region property
108 one for multimedia processing (named multimedia-memory@77000000, 64MiB), and
115 	memory {
119 	reserved-memory {
138 			compatible = "acme,multimedia-memory";
151 		memory-region = <&display_reserved>;
156 		memory-region = <&multimedia_reserved>;
161 		memory-region = <&multimedia_reserved>;
168 		memory-region = <&restricted_dma_reserved>;