diff options
Diffstat (limited to 'Documentation/devicetree/bindings/power/renesas,apmu.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/power/renesas,apmu.txt | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/power/renesas,apmu.txt b/Documentation/devicetree/bindings/power/renesas,apmu.txt new file mode 100644 index 000000000..f747f95ee --- /dev/null +++ b/Documentation/devicetree/bindings/power/renesas,apmu.txt @@ -0,0 +1,33 @@ +DT bindings for the Renesas Advanced Power Management Unit + +Renesas R-Car and RZ/G1 SoCs utilize one or more APMU hardware units +for CPU core power domain control including SMP boot and CPU Hotplug. + +Required properties: + +- compatible: Should be "renesas,<soctype>-apmu", "renesas,apmu" as fallback. + Examples with soctypes are: + - "renesas,r8a7743-apmu" (RZ/G1M) + - "renesas,r8a7745-apmu" (RZ/G1E) + - "renesas,r8a7790-apmu" (R-Car H2) + - "renesas,r8a7791-apmu" (R-Car M2-W) + - "renesas,r8a7792-apmu" (R-Car V2H) + - "renesas,r8a7793-apmu" (R-Car M2-N) + - "renesas,r8a7794-apmu" (R-Car E2) + +- reg: Base address and length of the I/O registers used by the APMU. + +- cpus: This node contains a list of CPU cores, which should match the order + of CPU cores used by the WUPCR and PSTR registers in the Advanced Power + Management Unit section of the device's datasheet. + + +Example: + +This shows the r8a7791 APMU that can control CPU0 and CPU1. + + apmu@e6152000 { + compatible = "renesas,r8a7791-apmu", "renesas,apmu"; + reg = <0 0xe6152000 0 0x188>; + cpus = <&cpu0 &cpu1>; + }; |