Lines Matching +full:reg +full:- +full:property
3 Reserved memory is specified as a node under the /reserved-memory node.
12 /reserved-memory node
13 ---------------------
14 #address-cells, #size-cells (required) - standard definition
15 - Should use the same values as the root node
16 ranges (required) - standard definition
17 - Should be empty
19 /reserved-memory/ child nodes
20 -----------------------------
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
26 Following the generic-names recommended practice, node names should
27 reflect the purpose of the node (ie. "framebuffer" or "dma-pool"). Unit
34 reg (required) - standard definition
36 size (required) - length based on parent's #size-cells
37 - Size in bytes of memory to reserve.
38 alignment (optional) - length based on parent's #size-cells
39 - Address boundary for alignment of allocation.
40 alloc-ranges (optional) - prop-encoded-array (address, length pairs).
41 - Specifies regions of memory that are
44 If both reg and size are present, then the reg property takes precedence
48 compatible (optional) - standard definition
49 - may contain the following strings:
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
57 When using this, the no-map and reusable properties must not be set,
69 shared-dma-pool and use dma_alloc_from_dev_coherent instead for atomic
71 - vendor specific string in the form <vendor>,[<device>-]<usage>
72 no-map (optional) - empty property
73 - Indicates the operating system must not create a virtual mapping
77 reusable (optional) - empty property
78 - The operating system can use the memory in this region with the
84 A node must not carry both the no-map and the reusable property as these are
88 - If a "linux,cma-default" property is present, then Linux will use the
91 - If a "linux,dma-default" property is present, then Linux will use the
95 -----------------------------------------
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
104 -------
108 one for multimedia processing (named multimedia-memory@77000000, 64MiB), and
112 #address-cells = <1>;
113 #size-cells = <1>;
116 reg = <0x40000000 0x40000000>;
119 reserved-memory {
120 #address-cells = <1>;
121 #size-cells = <1>;
126 compatible = "shared-dma-pool";
130 linux,cma-default;
134 reg = <0x78000000 0x800000>;
138 compatible = "acme,multimedia-memory";
139 reg = <0x77000000 0x4000000>;
143 compatible = "restricted-dma-pool";
144 reg = <0x50000000 0x4000000>;
151 memory-region = <&display_reserved>;
156 memory-region = <&multimedia_reserved>;
161 memory-region = <&multimedia_reserved>;
166 reg = <0x83010000 0x0 0x00000000 0x0 0x00100000
168 memory-region = <&restricted_dma_reserved>;