linux-kernel - Re: [PATCH V2 1/5] arm64: dts: qcom: pm7325: Add PMIC peripherals for pm7325

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Date:   Wed, 07 Apr 2021 20:54:37 +0530
From:   skakit@...eaurora.org
To:     Matthias Kaehlcke <mka@...omium.org>
Cc:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, kgunda@...eaurora.org
Subject: Re: [PATCH V2 1/5] arm64: dts: qcom: pm7325: Add PMIC peripherals for
 pm7325

Hi Matthias,

On 2021-04-02 23:05, Matthias Kaehlcke wrote:
> On Thu, Apr 01, 2021 at 02:43:12PM +0530, satya priya wrote:
> 
>> subject: arm64: dts: qcom: pm7325: Add PMIC peripherals for pm7325
> 
> nit: maybe just 'arm64: dts: qcom: Add pm7325 support/.dtsi' or 
> similar?
> 
>> Add temp-alarm and GPIO support for pm7325.
> 
> nit: it's more than that, you are adding the .dtsi for the PMIC itself.
> 

Okay, will change the commit text.

>> Signed-off-by: satya priya <skakit@...eaurora.org>
>> ---
>>  arch/arm64/boot/dts/qcom/pm7325.dtsi | 53 
>> ++++++++++++++++++++++++++++++++++++
>>  1 file changed, 53 insertions(+)
>>  create mode 100644 arch/arm64/boot/dts/qcom/pm7325.dtsi
>> 
>> diff --git a/arch/arm64/boot/dts/qcom/pm7325.dtsi 
>> b/arch/arm64/boot/dts/qcom/pm7325.dtsi
>> new file mode 100644
>> index 0000000..1e0848a
>> --- /dev/null
>> +++ b/arch/arm64/boot/dts/qcom/pm7325.dtsi
>> @@ -0,0 +1,53 @@
>> +// SPDX-License-Identifier: BSD-3-Clause
>> +// Copyright (c) 2021, The Linux Foundation. All rights reserved.
>> +
>> +#include <dt-bindings/interrupt-controller/irq.h>
>> +#include <dt-bindings/spmi/spmi.h>
>> +
>> +&spmi_bus {
>> +	pm7325: pmic@1 {
>> +		compatible = "qcom,pm7325", "qcom,spmi-pmic";
> 
> I saw the patches that add the compatible strings for the GPIOs, but
> can't find those that add the strings for the PMICs themselves. Could
> you provide a link if they have been sent already?
> 

They are not sent yet, qcom,spmi-pmic.txt file conversion to yaml [1] is 
currently on hold as all the child node bindings needs to be converted 
to yaml first. Once that is done we can add these strings.

[1] https://lore.kernel.org/patchwork/patch/1359552/

>> +		reg = <0x1 SPMI_USID>;
>> +		#address-cells = <1>;
>> +		#size-cells = <0>;
>> +
>> +		pm7325_temp_alarm: temp-alarm@a00 {
>> +			compatible = "qcom,spmi-temp-alarm";
>> +			reg = <0xa00>;
>> +			interrupts = <0x1 0xa 0x0 IRQ_TYPE_EDGE_BOTH>;
>> +			#thermal-sensor-cells = <0>;
>> +		};
>> +
>> +		pm7325_gpios: gpios@...0 {
>> +			compatible = "qcom,pm7325-gpio", "qcom,spmi-gpio";
>> +			reg = <0x8800>;
>> +			gpio-controller;
>> +			gpio-ranges = <&pm7325_gpios 0 0 10>;
>> +			#gpio-cells = <2>;
>> +			interrupt-controller;
>> +			#interrupt-cells = <2>;
>> +		};
>> +	};
>> +};
>> +
>> +&thermal_zones {
>> +	pm7325_thermal: pm7325-thermal {
>> +		polling-delay-passive = <100>;
>> +		polling-delay = <0>;
>> +		thermal-sensors = <&pm7325_temp_alarm>;
>> +
>> +		trips {
>> +			pm7325_trip0: trip0 {
>> +				temperature = <95000>;
>> +				hysteresis = <0>;
>> +				type = "passive";
>> +			};
>> +
>> +			pm7325_trip1: trip1 {
> 
> nit: the critical trip point is often named <name>-crit. One reason for
> this could be that it allows to add other non-critical trip points (in
> the .dtsi itself or the <board>.dts), without messing up the
> enumeration scheme.
> 

ok.

>> +				temperature = <115000>;
>> +				hysteresis = <0>;
>> +				type = "critical";
>> +			};
>> +		};
>> +	};
>> +};