diff options
Diffstat (limited to 'Documentation/devicetree/bindings/sram/sram.yaml')
| -rw-r--r-- | Documentation/devicetree/bindings/sram/sram.yaml | 69 |
1 files changed, 56 insertions, 13 deletions
diff --git a/Documentation/devicetree/bindings/sram/sram.yaml b/Documentation/devicetree/bindings/sram/sram.yaml index ee2287a1b14d..0922d1f71ba8 100644 --- a/Documentation/devicetree/bindings/sram/sram.yaml +++ b/Documentation/devicetree/bindings/sram/sram.yaml @@ -28,12 +28,20 @@ properties: contains: enum: - mmio-sram + - amlogic,meson-gxbb-sram + - arm,juno-sram-ns - atmel,sama5d2-securam + - nvidia,tegra186-sysram + - nvidia,tegra194-sysram + - nvidia,tegra234-sysram + - qcom,rpm-msg-ram + - rockchip,rk3288-pmu-sram reg: maxItems: 1 clocks: + maxItems: 1 description: A list of phandle and clock specifier pair that controls the single SRAM clock. @@ -45,6 +53,7 @@ properties: const: 1 ranges: + maxItems: 1 description: Should translate from local addresses within the sram to bus addresses. @@ -55,7 +64,7 @@ properties: type: boolean patternProperties: - "^([a-z]*-)?sram@[a-f0-9]+$": + "^([a-z0-9]*-)?sram(-section)?@[a-f0-9]+$": type: object description: Each child of the sram node specifies a region of reserved memory. @@ -64,15 +73,28 @@ patternProperties: description: Should contain a vendor specific string in the form <vendor>,[<device>-]<usage> - enum: - - allwinner,sun9i-a80-smp-sram - - amlogic,meson8-smp-sram - - amlogic,meson8b-smp-sram - - renesas,smp-sram - - rockchip,rk3066-smp-sram - - samsung,exynos4210-sysram - - samsung,exynos4210-sysram-ns - - socionext,milbeaut-smp-sram + contains: + enum: + - allwinner,sun4i-a10-sram-a3-a4 + - allwinner,sun4i-a10-sram-c1 + - allwinner,sun4i-a10-sram-d + - allwinner,sun9i-a80-smp-sram + - allwinner,sun50i-a64-sram-c + - amlogic,meson8-ao-arc-sram + - amlogic,meson8b-ao-arc-sram + - amlogic,meson8-smp-sram + - amlogic,meson8b-smp-sram + - amlogic,meson-gxbb-scp-shmem + - amlogic,meson-axg-scp-shmem + - arm,juno-scp-shmem + - arm,scmi-shmem + - arm,scp-shmem + - renesas,smp-sram + - rockchip,rk3066-smp-sram + - samsung,exynos4210-sysram + - samsung,exynos4210-sysram-ns + - socionext,milbeaut-smp-sram + - stericsson,u8500-esram reg: description: @@ -113,9 +135,20 @@ patternProperties: required: - compatible - reg - - "#address-cells" - - "#size-cells" - - ranges + +if: + not: + properties: + compatible: + contains: + enum: + - qcom,rpm-msg-ram + - rockchip,rk3288-pmu-sram +then: + required: + - "#address-cells" + - "#size-cells" + - ranges additionalProperties: false @@ -219,6 +252,16 @@ 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 |