diff options
Diffstat (limited to 'Documentation/devicetree/bindings/clock/renesas,r8a7778-cpg-clocks.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/clock/renesas,r8a7778-cpg-clocks.txt | 29 |
1 files changed, 26 insertions, 3 deletions
diff --git a/Documentation/devicetree/bindings/clock/renesas,r8a7778-cpg-clocks.txt b/Documentation/devicetree/bindings/clock/renesas,r8a7778-cpg-clocks.txt index 2f3747f..e4cdaf1c 100644 --- a/Documentation/devicetree/bindings/clock/renesas,r8a7778-cpg-clocks.txt +++ b/Documentation/devicetree/bindings/clock/renesas,r8a7778-cpg-clocks.txt @@ -1,7 +1,9 @@ * Renesas R8A7778 Clock Pulse Generator (CPG) The CPG generates core clocks for the R8A7778. It includes two PLLs and -several fixed ratio dividers +several fixed ratio dividers. +The CPG also provides a Clock Domain for SoC devices, in combination with the +CPG Module Stop (MSTP) Clocks. Required Properties: @@ -10,10 +12,18 @@ Required Properties: - #clock-cells: Must be 1 - clock-output-names: The names of the clocks. Supported clocks are "plla", "pllb", "b", "out", "p", "s", and "s1". + - #power-domain-cells: Must be 0 +SoC devices that are part of the CPG/MSTP Clock Domain and can be power-managed +through an MSTP clock should refer to the CPG device node in their +"power-domains" property, as documented by the generic PM domain bindings in +Documentation/devicetree/bindings/power/power_domain.txt. -Example -------- + +Examples +-------- + + - CPG device node: cpg_clocks: cpg_clocks@ffc80000 { compatible = "renesas,r8a7778-cpg-clocks"; @@ -22,4 +32,17 @@ Example clocks = <&extal_clk>; clock-output-names = "plla", "pllb", "b", "out", "p", "s", "s1"; + #power-domain-cells = <0>; + }; + + + - CPG/MSTP Clock Domain member device node: + + sdhi0: sd@ffe4c000 { + compatible = "renesas,sdhi-r8a7778"; + reg = <0xffe4c000 0x100>; + interrupts = <0 87 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&mstp3_clks R8A7778_CLK_SDHI0>; + power-domains = <&cpg_clocks>; + status = "disabled"; }; |
