Based on kernel version 4.3. Page generated on 2015-11-02 12:46 EST.
1 Generic on-chip SRAM 2 3 Simple IO memory regions to be managed by the genalloc API. 4 5 Required properties: 6 7 - compatible : mmio-sram 8 9 - reg : SRAM iomem address range 10 11 Reserving sram areas: 12 --------------------- 13 14 Each child of the sram node specifies a region of reserved memory. Each 15 child node should use a 'reg' property to specify a specific range of 16 reserved memory. 17 18 Following the generic-names recommended practice, node names should 19 reflect the purpose of the node. Unit address (@<address>) should be 20 appended to the name. 21 22 Required properties in the sram node: 23 24 - #address-cells, #size-cells : should use the same values as the root node 25 - ranges : standard definition, should translate from local addresses 26 within the sram to bus addresses 27 28 Required properties in the area nodes: 29 30 - reg : iomem address range, relative to the SRAM range 31 32 Optional properties in the area nodes: 33 34 - compatible : standard definition, should contain a vendor specific string 35 in the form <vendor>,[<device>-]<usage> 36 37 Example: 38 39 sram: sram@5c000000 { 40 compatible = "mmio-sram"; 41 reg = <0x5c000000 0x40000>; /* 256 KiB SRAM at address 0x5c000000 */ 42 43 #adress-cells = <1>; 44 #size-cells = <1>; 45 ranges = <0 0x5c000000 0x40000>; 46 47 smp-sram@100 { 48 compatible = "socvendor,smp-sram"; 49 reg = <0x100 0x50>; 50 }; 51 };