linux-kernel - Re: [PATCH 01/27] arm64: dts: mt8195: add infracfg

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Message-ID: <YMmv9ih/JPRLd7o0@google.com>
Date:   Wed, 16 Jun 2021 16:01:58 +0800
From:   Chen-Yu Tsai <wenst@...omium.org>
To:     Tinghan Shen <tinghan.shen@...iatek.com>
Cc:     robh+dt@...nel.org, matthias.bgg@...il.com,
        devicetree@...r.kernel.org, linux-mediatek@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        srv_heupstream@...iatek.com, seiya.wang@...iatek.com,
        Project_Global_Chrome_Upstream_Group@...iatek.com,
        Crystal Guo <crystal.guo@...iatek.com>
Subject: Re: [PATCH 01/27] arm64: dts: mt8195: add infracfg_rst node

Hi,

On Wed, Jun 16, 2021 at 01:32:08AM +0800, Tinghan Shen wrote:
> From: Crystal Guo <crystal.guo@...iatek.com>
> 
> add infracfg_rst node which is for MT8195 platform
> 
> Signed-off-by: Crystal Guo <crystal.guo@...iatek.com>
> ---
>  arch/arm64/boot/dts/mediatek/mt8195.dtsi | 15 +++++++++++++++
>  1 file changed, 15 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/mediatek/mt8195.dtsi b/arch/arm64/boot/dts/mediatek/mt8195.dtsi
> index 629cd883facf..8cda62f736b3 100644
> --- a/arch/arm64/boot/dts/mediatek/mt8195.dtsi
> +++ b/arch/arm64/boot/dts/mediatek/mt8195.dtsi
> @@ -8,6 +8,7 @@
>  
>  #include <dt-bindings/interrupt-controller/arm-gic.h>
>  #include <dt-bindings/interrupt-controller/irq.h>
> +#include <dt-bindings/reset/ti-syscon.h>
>  
>  / {
>  	compatible = "mediatek,mt8195";
> @@ -273,6 +274,20 @@
>  			};
>  		};
>  
> +		infracfg: syscon@...01000 {
> +			compatible = "mediatek,mt8195-infracfg", "syscon", "simple-mfd";

This block is named infracfg_ao in the datasheet. You seem to rename it
in the clock patch. Maybe you squashed the change into the wrong commit?

> +			reg = <0 0x10001000 0 0x1000>;

The address range matches the datasheet.

> +			#clock-cells = <1>;
> +
> +			infracfg_rst: reset-controller {
> +				compatible = "ti,syscon-reset";
> +				#reset-cells = <1>;
> +				ti,reset-bits = <
> +					0x140 26 0x144 26 0 0 (ASSERT_SET | DEASSERT_SET | STATUS_NONE)
> +				>;
> +			};

This node doesn't seem to be used anywhere. Is it really needed?


ChenYu