Re: [PATCH v3 13/15] riscv: dts: canaan: fix bus {ranges,reg} warnings

[Niklas Cassel <Niklas.Cassel@wdc.com>]

On Wed, Jun 29, 2022 at 07:43:42PM +0100, Conor Dooley wrote:
> From: Conor Dooley <conor.dooley@microchip.com>
> 
> The k210 devicetrees warn about missing/empty reg and/or ranges
> properties:
> arch/riscv/boot/dts/canaan/k210.dtsi:408.22-460.5: Warning (unit_address_vs_reg): /soc/bus@52000000: node has a unit name, but no reg or ranges property
> arch/riscv/boot/dts/canaan/k210.dtsi:352.22-406.5: Warning (simple_bus_reg): /soc/bus@50400000: missing or empty reg/ranges property
> 
> Add reg and ranges properties that naively cap the buses after the
> allocation of their last devices.
> 
> Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
> ---
>  arch/riscv/boot/dts/canaan/k210.dtsi | 9 ++++++---
>  1 file changed, 6 insertions(+), 3 deletions(-)
> 
> diff --git a/arch/riscv/boot/dts/canaan/k210.dtsi b/arch/riscv/boot/dts/canaan/k210.dtsi
> index 948dc235e39d..6a34dc4f3e51 100644
> --- a/arch/riscv/boot/dts/canaan/k210.dtsi
> +++ b/arch/riscv/boot/dts/canaan/k210.dtsi
> @@ -163,7 +163,8 @@ apb0: bus@50200000 {
>  			#address-cells = <1>;
>  			#size-cells = <1>;
>  			compatible = "simple-pm-bus";
> -			ranges;
> +			regs = <0x50200000 0x200000>;
> +			ranges = <0x50200000 0x50200000 0x200000>;

This looks wrong.

The property is called "reg" not "regs".

And I don't think that you should provide "reg" at all,
simply supplying "ranges" should be sufficient, no?


Kind regards,
Niklas

>  			clocks = <&sysclk K210_CLK_APB0>;
>  
>  			gpio1: gpio@50200000 {
> @@ -382,7 +383,8 @@ apb1: bus@50400000 {
>  			#address-cells = <1>;
>  			#size-cells = <1>;
>  			compatible = "simple-pm-bus";
> -			ranges;
> +			regs = <0x50400000 0x40100>;
> +			ranges = <0x50400000 0x50400000 0x40100>;
>  			clocks = <&sysclk K210_CLK_APB1>;
>  
>  			wdt0: watchdog@50400000 {
> @@ -437,7 +439,8 @@ apb2: bus@52000000 {
>  			#address-cells = <1>;
>  			#size-cells = <1>;
>  			compatible = "simple-pm-bus";
> -			ranges;
> +			regs = <0x52000000 0x2000200>;
> +			ranges = <0x52000000 0x52000000 0x2000200>;
>  			clocks = <&sysclk K210_CLK_APB2>;
>  
>  			spi0: spi@52000000 {
> -- 
> 2.36.1
>