1Samsung Exynos SYSRAM for SMP bringup: 2------------------------------------ 3 4Samsung SMP-capable Exynos SoCs use part of the SYSRAM for the bringup 5of the secondary cores. Once the core gets powered up it executes the 6code that is residing at some specific location of the SYSRAM. 7 8Therefore reserved section sub-nodes have to be added to the mmio-sram 9declaration. These nodes are of two types depending upon secure or 10non-secure execution environment. 11 12Required sub-node properties: 13- compatible : depending upon boot mode, should be 14 "samsung,exynos4210-sysram" : for Secure SYSRAM 15 "samsung,exynos4210-sysram-ns" : for Non-secure SYSRAM 16 17The rest of the properties should follow the generic mmio-sram discription 18found in Documentation/devicetree/bindings/sram/sram.txt 19 20Example: 21 22 sysram@2020000 { 23 compatible = "mmio-sram"; 24 reg = <0x02020000 0x54000>; 25 #address-cells = <1>; 26 #size-cells = <1>; 27 ranges = <0 0x02020000 0x54000>; 28 29 smp-sysram@0 { 30 compatible = "samsung,exynos4210-sysram"; 31 reg = <0x0 0x1000>; 32 }; 33 34 smp-sysram@53000 { 35 compatible = "samsung,exynos4210-sysram-ns"; 36 reg = <0x53000 0x1000>; 37 }; 38 }; 39