The Renesas R-Car System Controller provides power management for the CPU cores and various coprocessors, following the generic PM domain bindings in Documentation/devicetree/bindings/power/power_domain.txt. This supports R-Car Gen1 (H1), Gen2, and Gen3. Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx> Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> Acked-by: Rob Herring <robh@xxxxxxxxxx> --- v5: - Remove power-domains property from the sysc node again, as the System Controller itself is not part of the Clock Domain, v4: - Add Reviewed-by, Acked-by, - Compatible value must contain "exactly one" instead of "one or more", - Add power-domains property to refer to the SoC's Clock Domain, v3: - Move power area hierarchy from DT to C (cfr. DT bindings for Renesas CPG/MSSR), and switch to "#power-domain-cells = <1>", - Drop fallback compatibility strings, as the bindings are SoC-specific, - Rename from renesas,sysc-rcar.txt to renesas,rcar-sysc.txt, v2: - Add R-Car H3 (r8a7795) support, - Use "renesas,<type>-sysc" instead of "renesas,sysc-<type>", - Add fallback compatibility strings for R-Car Gen2 and Gen3. --- .../bindings/power/renesas,rcar-sysc.txt | 48 ++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 Documentation/devicetree/bindings/power/renesas,rcar-sysc.txt diff --git a/Documentation/devicetree/bindings/power/renesas,rcar-sysc.txt b/Documentation/devicetree/bindings/power/renesas,rcar-sysc.txt new file mode 100644 index 0000000000000000..b74e4d4785ab2d60 --- /dev/null +++ b/Documentation/devicetree/bindings/power/renesas,rcar-sysc.txt @@ -0,0 +1,48 @@ +DT bindings for the Renesas R-Car System Controller + +== System Controller Node == + +The R-Car System Controller provides power management for the CPU cores and +various coprocessors. + +Required properties: + - compatible: Must contain exactly one of the following: + - "renesas,r8a7779-sysc" (R-Car H1) + - "renesas,r8a7790-sysc" (R-Car H2) + - "renesas,r8a7791-sysc" (R-Car M2-W) + - "renesas,r8a7792-sysc" (R-Car V2H) + - "renesas,r8a7793-sysc" (R-Car M2-N) + - "renesas,r8a7794-sysc" (R-Car E2) + - "renesas,r8a7795-sysc" (R-Car H3) + - reg: Address start and address range for the device. + - #power-domain-cells: Must be 1. + + +Example: + + sysc: system-controller@e6180000 { + compatible = "renesas,r8a7791-sysc"; + reg = <0 0xe6180000 0 0x0200>; + #power-domain-cells = <1>; + }; + + +== PM Domain Consumers == + +Devices residing in a power area must refer to that power area, as documented +by the generic PM domain bindings in +Documentation/devicetree/bindings/power/power_domain.txt. + +Required properties: + - power-domains: A phandle and symbolic PM domain specifier, as defined in + <dt-bindings/power/r8a77*-sysc.h>. + + +Example: + + L2_CA15: cache-controller@0 { + compatible = "cache"; + power-domains = <&sysc R8A7791_PD_CA15_SCU>; + cache-unified; + cache-level = <2>; + }; -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html