On 19/09/2024 08:05, Ryan Chen wrote: >>> diff --git >>> a/Documentation/devicetree/bindings/mfd/aspeed,ast2x00-scu.yaml >>> b/Documentation/devicetree/bindings/mfd/aspeed,ast2x00-scu.yaml >>> index 86ee69c0f45b..127a357051cd 100644 >>> --- a/Documentation/devicetree/bindings/mfd/aspeed,ast2x00-scu.yaml >>> +++ b/Documentation/devicetree/bindings/mfd/aspeed,ast2x00-scu.yaml >>> @@ -9,6 +9,8 @@ title: Aspeed System Control Unit >>> description: >>> The Aspeed System Control Unit manages the global behaviour of the >> SoC, >>> configuring elements such as clocks, pinmux, and reset. >>> + In AST2700 SOC which has two soc connection, each soc have its own >>> + scu register control, ast2700-scu0 for soc0, ast2700-scu1 for soc1. >>> >>> maintainers: >>> - Joel Stanley <joel@xxxxxxxxx> >>> @@ -21,6 +23,8 @@ properties: >>> - aspeed,ast2400-scu >>> - aspeed,ast2500-scu >>> - aspeed,ast2600-scu >>> + - aspeed,ast2700-scu0 >>> + - aspeed,ast2700-scu1 >>> - const: syscon >>> - const: simple-mfd >>> >>> @@ -30,10 +34,12 @@ properties: >>> ranges: true >>> >>> '#address-cells': >>> - const: 1 >>> + minimum: 1 >>> + maximum: 2 >>> >>> '#size-cells': >>> - const: 1 >>> + minimum: 1 >>> + maximum: 2 >> >> Why do the children have 64 bit addressing? > > AST2700 is 64bit address, so it also. But why do they need it? Best regards, Krzysztof
