linux-kernel - Re: [PATCH v3 03/18] ARM: dts: qcom: add missing rpm regulators and cells for ipq8064

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Message-ID: <YlXXH3ikA5Tcdx9R@builder.lan>
Date:   Tue, 12 Apr 2022 14:46:39 -0500
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Ansuel Smith <ansuelsmth@...il.com>
Cc:     Andy Gross <agross@...nel.org>, Rob Herring <robh+dt@...nel.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, Jonathan McDowell <noodles@...th.li>
Subject: Re: [PATCH v3 03/18] ARM: dts: qcom: add missing rpm regulators and
 cells for ipq8064

On Wed 09 Mar 13:01 CST 2022, Ansuel Smith wrote:

> Add cells definition for rpm node

Why do we need the cells?

> and add missing regulators for the 4
> regulator present on ipq8064. There regulators are controlled by rpm and
> to correctly works gsbi4_i2c require to be NEVER disabled or rpm will

Are you saying "...to correctly work, gsbi4_i2c must NEVER be disabled..."?

If so, that's good information, but how does it relate to this
particular change?

Regards,
Bjorn

> reject any regulator change request.
> 
> Signed-off-by: Ansuel Smith <ansuelsmth@...il.com>
> Tested-by: Jonathan McDowell <noodles@...th.li>
> ---
>  arch/arm/boot/dts/qcom-ipq8064.dtsi | 36 +++++++++++++++++++++++++++++
>  1 file changed, 36 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/qcom-ipq8064.dtsi b/arch/arm/boot/dts/qcom-ipq8064.dtsi
> index b309bc0fbbcd..0938838a4af8 100644
> --- a/arch/arm/boot/dts/qcom-ipq8064.dtsi
> +++ b/arch/arm/boot/dts/qcom-ipq8064.dtsi
> @@ -842,10 +842,46 @@ rpm: rpm@...000 {
>  			clocks = <&gcc RPM_MSG_RAM_H_CLK>;
>  			clock-names = "ram";
>  
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +
>  			rpmcc: clock-controller {
>  				compatible = "qcom,rpmcc-ipq806x", "qcom,rpmcc";
>  				#clock-cells = <1>;
>  			};
> +
> +			smb208_regulators: regulators {
> +				compatible = "qcom,rpm-smb208-regulators";
> +				status = "okay";
> +
> +				smb208_s1a: s1a {
> +					regulator-min-microvolt = <1050000>;
> +					regulator-max-microvolt = <1150000>;
> +
> +					qcom,switch-mode-frequency = <1200000>;
> +				};
> +
> +				smb208_s1b: s1b {
> +					regulator-min-microvolt = <1050000>;
> +					regulator-max-microvolt = <1150000>;
> +
> +					qcom,switch-mode-frequency = <1200000>;
> +				};
> +
> +				smb208_s2a: s2a {
> +					regulator-min-microvolt = < 800000>;
> +					regulator-max-microvolt = <1250000>;
> +
> +					qcom,switch-mode-frequency = <1200000>;
> +				};
> +
> +				smb208_s2b: s2b {
> +					regulator-min-microvolt = < 800000>;
> +					regulator-max-microvolt = <1250000>;
> +
> +					qcom,switch-mode-frequency = <1200000>;
> +				};
> +			};
>  		};
>  
>  		tcsr: syscon@...00000 {
> -- 
> 2.34.1
>