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Message-ID: <2ec80bd8-dfef-d2e6-eb41-6e6088043e33@collabora.com>
Date:   Wed, 30 Nov 2022 12:10:14 +0100
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Subject: Re: [PATCH resend] arm64: dts: mediatek: mt8192: Mark scp_adsp clock
 as broken
Content-Language: en-US
To:     Chen-Yu Tsai <wenst@chromium.org>,
        Matthias Brugger <matthias.bgg@gmail.com>
Cc:     Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        =?UTF-8?Q?N=c3=adcolas_F_=2e_R_=2e_A_=2e_Prado?= 
        <nfraprado@collabora.com>, devicetree@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org,
        linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org,
        "allen-kh.cheng" <allen-kh.cheng@mediatek.com>
References: <20221130031741.3176853-1-wenst@chromium.org>
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@collabora.com>
In-Reply-To: <20221130031741.3176853-1-wenst@chromium.org>
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Il 30/11/22 04:17, Chen-Yu Tsai ha scritto:
> The scp_adsp clock controller is under the SCP_ADSP power domain. This
> power domain is currently not supported nor defined.
> 
> Mark the clock controller as broken for now, to avoid the system from
> trying to access it, and causing the CPU or bus to stall.
> 
> Fixes: 5d2b897bc6f5 ("arm64: dts: mediatek: Add mt8192 clock controllers")
> Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>

....or we can add the ADSP power domain to actually fix this properly, which looks
like being a generally good idea :-)

Allen, can you please take care of that?

Thank you,
Angelo

> ---
>   arch/arm64/boot/dts/mediatek/mt8192.dtsi | 2 ++
>   1 file changed, 2 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/mediatek/mt8192.dtsi b/arch/arm64/boot/dts/mediatek/mt8192.dtsi
> index 6b20376191a7..ef91941848ae 100644
> --- a/arch/arm64/boot/dts/mediatek/mt8192.dtsi
> +++ b/arch/arm64/boot/dts/mediatek/mt8192.dtsi
> @@ -575,6 +575,8 @@ scp_adsp: clock-controller@10720000 {
>   			compatible = "mediatek,mt8192-scp_adsp";
>   			reg = <0 0x10720000 0 0x1000>;
>   			#clock-cells = <1>;
> +			/* power domain dependency not upstreamed */
> +			status = "broken";
>   		};
>   
>   		uart0: serial@11002000 {
>