linux-kernel - Re: [PATCH 5/7] ARM: dts: rtd1195: Introduce r-bus

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Date:   Thu, 14 Nov 2019 19:34:47 -0600
From:   Rob Herring <robh+dt@...nel.org>
To:     Andreas Färber <afaerber@...e.de>
Cc:     linux-realtek-soc@...ts.infradead.org,
        "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Mark Rutland <mark.rutland@....com>, devicetree@...r.kernel.org
Subject: Re: [PATCH 5/7] ARM: dts: rtd1195: Introduce r-bus

On Sun, Nov 10, 2019 at 9:04 PM Andreas Färber <afaerber@...e.de> wrote:
>
> Model Realtek's register bus in DT.
>
> Signed-off-by: Andreas Färber <afaerber@...e.de>
> ---
>  This could be squashed into the original RTD1195 patch.
>
>  arch/arm/boot/dts/rtd1195.dtsi | 52 ++++++++++++++++++++++++------------------
>  1 file changed, 30 insertions(+), 22 deletions(-)
>
> diff --git a/arch/arm/boot/dts/rtd1195.dtsi b/arch/arm/boot/dts/rtd1195.dtsi
> index a8cc2d23e7ef..3439647ecf97 100644
> --- a/arch/arm/boot/dts/rtd1195.dtsi
> +++ b/arch/arm/boot/dts/rtd1195.dtsi
> @@ -92,28 +92,36 @@
>                          <0x18100000 0x18100000 0x01000000>,
>                          <0x40000000 0x40000000 0xc0000000>;
>
> -               wdt: watchdog@...07680 {
> -                       compatible = "realtek,rtd1295-watchdog";
> -                       reg = <0x18007680 0x100>;
> -                       clocks = <&osc27M>;
> -               };
> -
> -               uart0: serial@...07800 {
> -                       compatible = "snps,dw-apb-uart";
> -                       reg = <0x18007800 0x400>;
> -                       reg-shift = <2>;
> -                       reg-io-width = <4>;
> -                       clock-frequency = <27000000>;
> -                       status = "disabled";
> -               };
> -
> -               uart1: serial@...1b200 {
> -                       compatible = "snps,dw-apb-uart";
> -                       reg = <0x1801b200 0x100>;
> -                       reg-shift = <2>;
> -                       reg-io-width = <4>;
> -                       clock-frequency = <27000000>;
> -                       status = "disabled";
> +               rbus: r-bus@...00000 {

Following node names should be generic: bus@...

> +                       compatible = "simple-bus";
> +                       reg = <0x18000000 0x100000>;
> +                       #address-cells = <1>;
> +                       #size-cells = <1>;
> +                       ranges = <0x0 0x18000000 0x100000>;
> +
> +                       wdt: watchdog@...0 {
> +                               compatible = "realtek,rtd1295-watchdog";
> +                               reg = <0x7680 0x100>;
> +                               clocks = <&osc27M>;
> +                       };
> +
> +                       uart0: serial@...0 {
> +                               compatible = "snps,dw-apb-uart";
> +                               reg = <0x7800 0x400>;
> +                               reg-shift = <2>;
> +                               reg-io-width = <4>;
> +                               clock-frequency = <27000000>;
> +                               status = "disabled";
> +                       };
> +
> +                       uart1: serial@...00 {
> +                               compatible = "snps,dw-apb-uart";
> +                               reg = <0x1b200 0x100>;
> +                               reg-shift = <2>;
> +                               reg-io-width = <4>;
> +                               clock-frequency = <27000000>;
> +                               status = "disabled";
> +                       };
>                 };
>
>                 gic: interrupt-controller@...11000 {
> --
> 2.16.4
>