28 lines
727 B
Plaintext
28 lines
727 B
Plaintext
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* Renesas SMP SRAM
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Renesas R-Car Gen2 and RZ/G1 SoCs need a small piece of SRAM for the jump stub
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for secondary CPU bringup and CPU hotplug.
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This memory is reserved by adding a child node to a "mmio-sram" node, cfr.
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Documentation/devicetree/bindings/sram/sram.txt.
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Required child node properties:
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- compatible: Must be "renesas,smp-sram",
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- reg: Address and length of the reserved SRAM.
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The full physical (bus) address must be aligned to a 256 KiB boundary.
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Example:
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icram1: sram@e63c0000 {
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compatible = "mmio-sram";
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reg = <0 0xe63c0000 0 0x1000>;
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#address-cells = <1>;
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#size-cells = <1>;
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ranges = <0 0 0xe63c0000 0x1000>;
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smp-sram@0 {
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compatible = "renesas,smp-sram";
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reg = <0 0x10>;
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};
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};
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