linux-kernel - Re: [PATCH v3 5/8] riscv: dts: microchip: make the fabric dtsi board specific

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Date:   Wed, 04 May 2022 01:47:12 +0200
From:   Heiko Stuebner <heiko@...ech.de>
To:     krzk+dt@...nel.org, palmer@...belt.com, robh+dt@...nel.org,
        linux-riscv@...ts.infradead.org
Cc:     conor.dooley@...rochip.com, Cyril.Jean@...rochip.com,
        daire.mcnamara@...rochip.com, paul.walmsley@...ive.com,
        aou@...s.berkeley.edu, palmer@...osinc.com, arnd@...db.de,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-riscv@...ts.infradead.org, Conor Dooley <mail@...chuod.ie>
Subject: Re: [PATCH v3 5/8] riscv: dts: microchip: make the fabric dtsi board specific

Am Sonntag, 1. Mai 2022, 21:25:56 CEST schrieb Conor Dooley:
> From: Conor Dooley <conor.dooley@...rochip.com>
> 
> Currently mpfs-fabric.dtsi is included by mpfs.dtsi - which is fine
> currently since there is only one board with this SoC upstream.
> 
> However if another board was added, it would include the fabric contents
> of the Icicle Kit's reference design. To avoid this, rename
> mpfs-fabric.dtsi to mpfs-icicle-kit-fabric.dtsi & include it in the dts
> rather than mpfs.dtsi.
> 
> Signed-off-by: Conor Dooley <conor.dooley@...rochip.com>
> ---
>  .../microchip/{mpfs-fabric.dtsi => mpfs-icicle-kit-fabric.dtsi} | 2 ++
>  arch/riscv/boot/dts/microchip/mpfs-icicle-kit.dts               | 1 +
>  arch/riscv/boot/dts/microchip/mpfs.dtsi                         | 1 -
>  3 files changed, 3 insertions(+), 1 deletion(-)
>  rename arch/riscv/boot/dts/microchip/{mpfs-fabric.dtsi => mpfs-icicle-kit-fabric.dtsi} (91%)
> 
> diff --git a/arch/riscv/boot/dts/microchip/mpfs-fabric.dtsi b/arch/riscv/boot/dts/microchip/mpfs-icicle-kit-fabric.dtsi
> similarity index 91%
> rename from arch/riscv/boot/dts/microchip/mpfs-fabric.dtsi
> rename to arch/riscv/boot/dts/microchip/mpfs-icicle-kit-fabric.dtsi
> index ccaac3371cf9..0d28858b83f2 100644
> --- a/arch/riscv/boot/dts/microchip/mpfs-fabric.dtsi
> +++ b/arch/riscv/boot/dts/microchip/mpfs-icicle-kit-fabric.dtsi
> @@ -2,6 +2,8 @@
>  /* Copyright (c) 2020-2021 Microchip Technology Inc */
>  
>  / {
> +	compatible = "microchip,mpfs-icicle-reference-rtlv2203", "microchip,mpfs";
> +

I don't really understand the meaning of the added compatible yet.
It will get overridden by the compatible in the dts and also the
fabric dtsi for the polarberry does not contain a similar thing.


>  	core_pwm0: pwm@...00000 {
>  		compatible = "microchip,corepwm-rtl-v4";
>  		reg = <0x0 0x41000000 0x0 0xF0>;
> diff --git a/arch/riscv/boot/dts/microchip/mpfs-icicle-kit.dts b/arch/riscv/boot/dts/microchip/mpfs-icicle-kit.dts
> index 84b0015dfd47..739dfa52bed1 100644
> --- a/arch/riscv/boot/dts/microchip/mpfs-icicle-kit.dts
> +++ b/arch/riscv/boot/dts/microchip/mpfs-icicle-kit.dts
> @@ -4,6 +4,7 @@
>  /dts-v1/;
>  
>  #include "mpfs.dtsi"
> +#include "mpfs-icicle-kit-fabric.dtsi"
>  
>  /* Clock frequency (in Hz) of the rtcclk */
>  #define RTCCLK_FREQ		1000000
> diff --git a/arch/riscv/boot/dts/microchip/mpfs.dtsi b/arch/riscv/boot/dts/microchip/mpfs.dtsi
> index cc3386068c2d..695c4e2807f5 100644
> --- a/arch/riscv/boot/dts/microchip/mpfs.dtsi
> +++ b/arch/riscv/boot/dts/microchip/mpfs.dtsi
> @@ -3,7 +3,6 @@
>  
>  /dts-v1/;
>  #include "dt-bindings/clock/microchip,mpfs-clock.h"
> -#include "mpfs-fabric.dtsi"
>  
>  / {
>  	#address-cells = <2>;
>