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: <db168415-74b0-c83e-248a-a70b1c9b71b7@linaro.org>
Date:   Fri, 7 Apr 2023 21:37:01 +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 4/5] arm64: dts: qcom: ipq9574: Add SMPA1 regulator
 node
Content-Language: en-US
To:     Devi Priya <quic_devipriy@quicinc.com>, agross@kernel.org,
        andersson@kernel.org, lgirdwood@gmail.com, broonie@kernel.org,
        robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org,
        linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
        devicetree@vger.kernel.org
Cc:     quic_srichara@quicinc.com, quic_gokulsri@quicinc.com,
        quic_sjaganat@quicinc.com, quic_kathirav@quicinc.com,
        quic_arajkuma@quicinc.com, quic_anusha@quicinc.com
References: <20230407155727.20615-1-quic_devipriy@quicinc.com>
 <20230407155727.20615-5-quic_devipriy@quicinc.com>
From:   Konrad Dybcio <konrad.dybcio@linaro.org>
In-Reply-To: <20230407155727.20615-5-quic_devipriy@quicinc.com>
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 7bit
Precedence: bulk


On 7.04.2023 17:57, Devi Priya wrote:
> Add support for SMPA1 regulator node in IPQ9574.
> 
> Co-developed-by: Praveenkumar I <quic_ipkumar@quicinc.com>
> Signed-off-by: Praveenkumar I <quic_ipkumar@quicinc.com>
> Signed-off-by: Devi Priya <quic_devipriy@quicinc.com>
> ---
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>

Konrad
>  Changes in V4:
> 	- Updated the comment as suggested by konrad
> 	  s/Updating/Update
> 	  s/725000uV/725mV
> 
>  arch/arm64/boot/dts/qcom/ipq9574-rdp433.dts | 19 +++++++++++++++++++
>  1 file changed, 19 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/ipq9574-rdp433.dts b/arch/arm64/boot/dts/qcom/ipq9574-rdp433.dts
> index 3ae38cf327ea..bdc1434fbe67 100644
> --- a/arch/arm64/boot/dts/qcom/ipq9574-rdp433.dts
> +++ b/arch/arm64/boot/dts/qcom/ipq9574-rdp433.dts
> @@ -44,6 +44,25 @@
>  	};
>  };
>  
> +&rpm_requests {
> +	regulators {
> +		compatible = "qcom,rpm-mp5496-regulators";
> +
> +		ipq9574_s1: s1 {
> +		/*
> +		 * During kernel bootup, the SoC runs at 800MHz with 875mV set by the bootloaders.
> +		 * During regulator registration, kernel not knowing the initial voltage,
> +		 * considers it as zero and brings up the regulators with minimum supported voltage.
> +		 * Update the regulator-min-microvolt with SVS voltage of 725mV so that
> +		 * the regulators are brought up with 725mV which is sufficient for all the
> +		 * corner parts to operate at 800MHz
> +		 */
> +			regulator-min-microvolt = <725000>;
> +			regulator-max-microvolt = <1075000>;
> +		};
> +	};
> +};
> +
>  &pcie1_phy {
>  	status = "okay";
>  };