Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Message-ID: <7bec0262-8a20-9b6a-599f-5ba759e6bd6b@linaro.org>
Date:   Thu, 6 Apr 2023 21:31:32 +0200
MIME-Version: 1.0
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101
 Thunderbird/102.9.1
Subject: Re: [PATCH v4 1/4] arm64: dts: qcom: sc7180: Don't enable lpass
 clocks by default
Content-Language: en-US
To:     Nikita Travkin <nikita@trvn.ru>, agross@kernel.org,
        andersson@kernel.org
Cc:     robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org,
        quic_srivasam@quicinc.com, judyhsiao@chromium.org,
        mka@chromium.org, dianders@chromium.org,
        linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org, ~postmarketos/upstreaming@lists.sr.ht
References: <20230406150633.83351-1-nikita@trvn.ru>
 <20230406150633.83351-2-nikita@trvn.ru>
From:   Konrad Dybcio <konrad.dybcio@linaro.org>
In-Reply-To: <20230406150633.83351-2-nikita@trvn.ru>
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 7bit
Precedence: bulk


On 6.04.2023 17:06, Nikita Travkin wrote:
> lpass clocks are usually blocked from HLOS by the firmware and
> instead are managed by the ADSP. Mark them as reserved and explicitly
> enable in the CrOS boards that have special, cooperative firmware.
> 
> Signed-off-by: Nikita Travkin <nikita@trvn.ru>
> ---
>  arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi | 8 ++++++++
>  arch/arm64/boot/dts/qcom/sc7180.dtsi         | 4 ++++
>  2 files changed, 12 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi b/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi
> index 423630c4d02c..26def6e12723 100644
> --- a/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi
> @@ -785,6 +785,14 @@ alc5682: codec@1a {
>  	};
>  };
>  
> +&lpasscc {
> +	status = "okay";
> +};
> +
> +&lpass_hm {
> +	status = "okay";
> +};
> +
>  &lpass_cpu {
>  	status = "okay";
>  
_hm should come after _cpu alphabetically

w/ that

Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>

Konrad
> diff --git a/arch/arm64/boot/dts/qcom/sc7180.dtsi b/arch/arm64/boot/dts/qcom/sc7180.dtsi
> index 3c799b564b64..6f40301faa1c 100644
> --- a/arch/arm64/boot/dts/qcom/sc7180.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7180.dtsi
> @@ -3621,6 +3621,8 @@ lpasscc: clock-controller@62d00000 {
>  			power-domains = <&lpass_hm LPASS_CORE_HM_GDSCR>;
>  			#clock-cells = <1>;
>  			#power-domain-cells = <1>;
> +
> +			status = "reserved"; /* Controlled by ADSP */
>  		};
>  
>  		lpass_cpu: lpass@62d87000 {
> @@ -3669,6 +3671,8 @@ lpass_hm: clock-controller@63000000 {
>  
>  			#clock-cells = <1>;
>  			#power-domain-cells = <1>;
> +
> +			status = "reserved"; /* Controlled by ADSP */
>  		};
>  	};
>