diff options
Diffstat (limited to 'Documentation/devicetree/bindings/sram/sram.yaml')
-rw-r--r-- | Documentation/devicetree/bindings/sram/sram.yaml | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/sram/sram.yaml b/Documentation/devicetree/bindings/sram/sram.yaml index 34803ea4f0b1..d141027e5fe1 100644 --- a/Documentation/devicetree/bindings/sram/sram.yaml +++ b/Documentation/devicetree/bindings/sram/sram.yaml @@ -64,6 +64,9 @@ patternProperties: description: Should contain a vendor specific string in the form <vendor>,[<device>-]<usage> + enum: + - samsung,exynos4210-sysram + - samsung,exynos4210-sysram-ns reg: description: @@ -134,3 +137,29 @@ examples: export; }; }; + + - | + // Samsung SMP-capable Exynos SoCs use part of the SYSRAM for the bringup + // of the secondary cores. Once the core gets powered up it executes the + // code that is residing at some specific location of the SYSRAM. + // + // Therefore reserved section sub-nodes have to be added to the mmio-sram + // declaration. These nodes are of two types depending upon secure or + // non-secure execution environment. + sram@2020000 { + compatible = "mmio-sram"; + reg = <0x02020000 0x54000>; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0 0x02020000 0x54000>; + + smp-sram@0 { + compatible = "samsung,exynos4210-sysram"; + reg = <0x0 0x1000>; + }; + + smp-sram@53000 { + compatible = "samsung,exynos4210-sysram-ns"; + reg = <0x53000 0x1000>; + }; + }; |