linux-kernel - Re: [PATCH] arm64: dts: qcom: msm8916/39-samsung-a2015: Add PMIC and charger

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Date:   Tue, 5 Dec 2023 12:17:15 +0100
From:   Bryan O'Donoghue <bryan.odonoghue@...aro.org>
To:     Raymond Hackley <raymondhackley@...tonmail.com>,
        linux-kernel@...r.kernel.org
Cc:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Jakob Hauser <jahau@...ketmail.com>,
        Stephan Gerhold <stephan@...hold.net>,
        Nikita Travkin <nikita@...n.ru>, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, ~postmarketos/upstreaming@...ts.sr.ht
Subject: Re: [PATCH] arm64: dts: qcom: msm8916/39-samsung-a2015: Add PMIC and
 charger

On 05/12/2023 10:38, Raymond Hackley wrote:
> The phones listed below have Richtek RT5033 PMIC and charger.
> Add them to the device trees.
> 
> - Samsung Galaxy A3/A5/A7 2015
> - Samsung Galaxy E5/E7
> - Samsung Galaxy Grand Max
> 
> Signed-off-by: Raymond Hackley <raymondhackley@...tonmail.com>
> ---
>   .../qcom/msm8916-samsung-a2015-common.dtsi    | 59 +++++++++++++++++-
>   .../boot/dts/qcom/msm8916-samsung-a3u-eur.dts |  6 ++
>   .../boot/dts/qcom/msm8916-samsung-a5u-eur.dts |  6 ++
>   .../qcom/msm8916-samsung-e2015-common.dtsi    |  6 ++
>   .../boot/dts/qcom/msm8916-samsung-e5.dts      |  6 ++
>   .../boot/dts/qcom/msm8916-samsung-e7.dts      |  7 +++
>   .../dts/qcom/msm8916-samsung-grandmax.dts     |  6 ++
>   .../boot/dts/qcom/msm8939-samsung-a7.dts      | 62 ++++++++++++++++++-
>   8 files changed, 156 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi b/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi
> index 2937495940ea..e6355e5e2177 100644
> --- a/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi
> +++ b/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi
> @@ -28,6 +28,12 @@ tz-apps@...00000 {
>   		};
>   	};
>   
> +	battery: battery {
> +		compatible = "simple-battery";
> +		precharge-current-microamp = <450000>;
> +		precharge-upper-limit-microvolt = <3500000>;
> +	};
> +
>   	clk_pwm: pwm {
>   		compatible = "clk-pwm";
>   		#pwm-cells = <2>;
> @@ -128,6 +134,12 @@ muic: extcon@25 {
>   
>   			pinctrl-names = "default";
>   			pinctrl-0 = <&muic_int_default>;
> +
> +			usb_con: connector {
> +				compatible = "usb-b-connector";
> +				label = "micro-USB";
> +				type = "micro";
> +			};

It would be nice to break this up into individual patches

One patch for the battery, one patch for the usb-b-connector per device 
you are targetting.

More work but better practice to have more granular commits.


> +		regulators {
> +			rt5033_reg_safe_ldo: SAFE_LDO {
> +				regulator-min-microvolt = <4900000>;
> +				regulator-max-microvolt = <4900000>;
> +				regulator-always-on;
> +			};
> +
> +			/*
> +			 * Needed for camera, but not used yet.
> +			 * Define empty nodes to allow disabling the unused
> +			 * regulators.
> +			 */
> +			LDO {};
> +			BUCK {};
> +		};

Aren't the camera regulators off until enabled ?

---
bod