diff options
Diffstat (limited to 'Documentation/devicetree/bindings/sram/sram.yaml')
-rw-r--r-- | Documentation/devicetree/bindings/sram/sram.yaml | 28 |
1 files changed, 25 insertions, 3 deletions
diff --git a/Documentation/devicetree/bindings/sram/sram.yaml b/Documentation/devicetree/bindings/sram/sram.yaml index 7b83cc6c9bfa..19d116ff9ddc 100644 --- a/Documentation/devicetree/bindings/sram/sram.yaml +++ b/Documentation/devicetree/bindings/sram/sram.yaml @@ -29,6 +29,7 @@ properties: enum: - mmio-sram - atmel,sama5d2-securam + - rockchip,rk3288-pmu-sram reg: maxItems: 1 @@ -73,6 +74,8 @@ patternProperties: - allwinner,sun50i-a64-sram-c - amlogic,meson8-smp-sram - amlogic,meson8b-smp-sram + - amlogic,meson-gxbb-scp-shmem + - amlogic,meson-axg-scp-shmem - renesas,smp-sram - rockchip,rk3066-smp-sram - samsung,exynos4210-sysram @@ -118,9 +121,18 @@ patternProperties: required: - compatible - reg - - "#address-cells" - - "#size-cells" - - ranges + +if: + properties: + compatible: + contains: + const: rockchip,rk3288-pmu-sram + +else: + required: + - "#address-cells" + - "#size-cells" + - ranges additionalProperties: false @@ -224,6 +236,16 @@ examples: }; - | + // Rockchip's rk3288 SoC uses the sram of pmu to store the function of + // resume from maskrom(the 1st level loader). This is a common use of + // the "pmu-sram" because it keeps power even in low power states + // in the system. + sram@ff720000 { + compatible = "rockchip,rk3288-pmu-sram", "mmio-sram"; + reg = <0xff720000 0x1000>; + }; + + - | // Allwinner's A80 SoC uses part of the secure sram for hotplugging of the // primary core (cpu0). Once the core gets powered up it checks if a magic // value is set at a specific location. If it is then the BROM will jump |