> Subject: Re: [PATCH v3 1/4] dt-bindings: mfd: aspeed: support for AST2700 > > 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? > Sorry, I may not understand your point. Since address-cell = <2>, Do you mean size-cell still 1? If yes. I do the dts check it need size-cells=<2>, when I do address-cells = <2> > > Best regards, > Krzysztof
