linux-kernel - Re: [PATCH V2 3/5] arm64: dts: qcom: pmk8350: Add PMIC peripherals for pmk8350

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Date:   Wed, 07 Apr 2021 20:58:54 +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 3/5] arm64: dts: qcom: pmk8350: Add PMIC peripherals
 for pmk8350

On 2021-04-03 00:15, Matthias Kaehlcke wrote:
> On Thu, Apr 01, 2021 at 02:43:14PM +0530, satya priya wrote:
>> subject: arm64: dts: qcom: pmk8350: Add PMIC peripherals for pmk8350
> 
> same nit as for 1/5: maybe just 'arm64: dts: qcom: Add pml7350 
> support/.dtsi'
> or similar since this adds the initial .dtsi for the pmk8350?
> 
>> Add PON, GPIO, RTC and other PMIC infra modules support for pmk8350.
> 

I see that pmk8350 DT file is already added in linux-next.
Only GPIO node has been added, will add remaining nodes and change 
commit text accordingly.

> nit: also mention that it adds the pmk8350 .dtsi in the first place.
> 
>> Signed-off-by: satya priya <skakit@...eaurora.org>
>> ---
>>  arch/arm64/boot/dts/qcom/pmk8350.dtsi | 100 
>> ++++++++++++++++++++++++++++++++++
>>  1 file changed, 100 insertions(+)
>>  create mode 100644 arch/arm64/boot/dts/qcom/pmk8350.dtsi
>> 
>> diff --git a/arch/arm64/boot/dts/qcom/pmk8350.dtsi 
>> b/arch/arm64/boot/dts/qcom/pmk8350.dtsi
>> new file mode 100644
>> index 0000000..13631f2
>> --- /dev/null
>> +++ b/arch/arm64/boot/dts/qcom/pmk8350.dtsi
>> @@ -0,0 +1,100 @@
>> +// SPDX-License-Identifier: BSD-3-Clause
>> +// Copyright (c) 2021, The Linux Foundation. All rights reserved.
>> +
>> +#include <dt-bindings/input/input.h>
>> +#include <dt-bindings/input/linux-event-codes.h>
>> +#include <dt-bindings/interrupt-controller/irq.h>
>> +#include <dt-bindings/spmi/spmi.h>
>> +#include <dt-bindings/iio/qcom,spmi-adc7-pm8350.h>
>> +#include <dt-bindings/iio/qcom,spmi-adc7-pmk8350.h>
>> +#include <dt-bindings/iio/qcom,spmi-adc7-pmr735a.h>
>> +#include <dt-bindings/iio/qcom,spmi-adc7-pmr735b.h>
>> +
>> +&spmi_bus {
>> +	pmk8350: pmic@0 {
>> +		compatible = "qcom,pmk8350", "qcom,spmi-pmic";
> 
> Please provide a link to the binding if it has been sent.
> 
>> +		reg = <0x0 SPMI_USID>;
>> +		#address-cells = <1>;
>> +		#size-cells = <0>;
>> +
>> +		pmk8350_pon: pon@...0 {
>> +			compatible = "qcom,pm8998-pon";
>> +			reg = <0x1300>;
>> +
>> +			pwrkey {
>> +				compatible = "qcom,pmk8350-pwrkey";
>> +				interrupts = <0x0 0x13 0x7 IRQ_TYPE_EDGE_BOTH>;
>> +				linux,code = <KEY_POWER>;
>> +			};
>> +
>> +			resin {
>> +				compatible = "qcom,pmk8350-resin";
>> +				interrupts = <0x0 0x13 0x6 IRQ_TYPE_EDGE_BOTH>;
>> +				linux,code = <KEY_VOLUMEDOWN>;
>> +			};
> 
> Is the usage of this keys really universal across different boards?
> 

Yes, It is universal across different boards.

> At least for the volume down key for most PMICs the config is in the
> board file, which seems to make more sense.
> 
>> +		};
>> +
>> +		pmk8350_vadc: adc@...0 {
>> +			compatible = "qcom,spmi-adc7";
>> +			reg = <0x3100>;
>> +			#address-cells = <1>;
>> +			#size-cells = <0>;
>> +			interrupts = <0x0 0x31 0x0 IRQ_TYPE_EDGE_RISING>;
>> +			interrupt-names = "eoc-int-en-set";
>> +			#io-channel-cells = <1>;
>> +			io-channel-ranges;
>> +
>> +			pmk8350_die_temp {
>> +				reg = <PMK8350_ADC7_DIE_TEMP>;
>> +				label = "pmk8350_die_temp";
>> +				qcom,pre-scaling = <1 1>;
>> +			};
>> +
>> +			pm8350_die_temp {
>> +				reg = <PM8350_ADC7_DIE_TEMP>;
>> +				label = "pm8350_die_temp";
>> +				qcom,pre-scaling = <1 1>;
>> +			};
> 
> nit: I think this should be 'alphabetical' order, so 'pm8350_die_temp' 
> should
> be before 'pmk8350_die_temp'.
> 

Ok.

>> +
>> +			pmr735a_die_temp {
>> +				reg = <PMR735A_ADC7_DIE_TEMP>;
>> +				label = "pmr735a_die_temp";
>> +				qcom,pre-scaling = <1 1>;
>> +			};
>> +
>> +			pmr735b_die_temp {
>> +				reg = <PMR735B_ADC7_DIE_TEMP>;
>> +				label = "pmr735b_die_temp";
>> +				qcom,pre-scaling = <1 1>;
>> +			};
> 
> Is it guaranteed that a board with the pmk8350 will always have the
> other 3 PMICs?
> 

No.
Ok, will move this to idp board dts file.

>> +		};
>> +
>> +		pmk8350_adc_tm: adc-tm@...0 {
>> +			compatible = "qcom,adc-tm7";
>> +			reg = <0x3400>;
>> +			interrupts = <0x0 0x34 0x0 IRQ_TYPE_EDGE_RISING>;
>> +			interrupt-names = "threshold";
>> +			#address-cells = <1>;
>> +			#size-cells = <0>;
>> +			#thermal-sensor-cells = <1>;
>> +			status = "disabled";
>> +		};
>> +
>> +		pmk8350_gpios: gpios@...0 {
>> +			compatible = "qcom,pmk8350-gpio", "qcom,spmi-gpio";
>> +			reg = <0xb000>;
>> +			gpio-controller;
>> +			gpio-ranges = <&pmk8350_gpios 0 0 4>;
>> +			#gpio-cells = <2>;
>> +			interrupt-controller;
>> +			#interrupt-cells = <2>;
>> +		};
>> +
>> +		pmk8350_rtc: rtc@...0 {
> 
> nit: nodes should be ordered by address, hence 'rtc@...0' should be 
> before
> 'gpios@...0'.
> 

Ok.

>> +			compatible = "qcom,pmk8350-rtc";
>> +			reg = <0x6100>, <0x6200>;
>> +			reg-names = "rtc", "alarm";
>> +			interrupts = <0x0 0x62 0x1 IRQ_TYPE_EDGE_RISING>;
>> +		};
>> +	};
>> +};