linux-kernel - Re: [PATCH] arm64: dts: qcom: sc7280: Add PMIC peripherals for SC7280

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Date:   Mon, 22 Mar 2021 18:48:43 +0530
From:   skakit@...eaurora.org
To:     Bjorn Andersson <bjorn.andersson@...aro.org>
Cc:     Rob Herring <robh+dt@...nel.org>, Andy Gross <agross@...nel.org>,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, kgunda@...eaurora.org
Subject: Re: [PATCH] arm64: dts: qcom: sc7280: Add PMIC peripherals for SC7280

Hi Bjorn,

On 2021-03-12 23:06, Bjorn Andersson wrote:
> On Thu 11 Mar 04:40 CST 2021, satya priya wrote:
> 
>> Add PM7325/PM8350C/PMK8350/PMR735A peripherals such as PON,
>> GPIOs, RTC and other PMIC infra modules for SC7280.
>> 
> 
> Overall this looks good, just two small things below.
> 
>> Signed-off-by: satya priya <skakit@...eaurora.org>
>> ---
>> This patch depends on base DT and board files for SC7280 to merge 
>> first
>> https://lore.kernel.org/patchwork/project/lkml/list/?series=487403
>> 
>>  arch/arm64/boot/dts/qcom/pm7325.dtsi  |  60 ++++++++++++++++++++
>>  arch/arm64/boot/dts/qcom/pm8350c.dtsi |  60 ++++++++++++++++++++
>>  arch/arm64/boot/dts/qcom/pmk8350.dtsi | 104 
>> ++++++++++++++++++++++++++++++++++
>>  arch/arm64/boot/dts/qcom/pmr735a.dtsi |  60 ++++++++++++++++++++
>>  arch/arm64/boot/dts/qcom/sc7280.dtsi  |   8 +++
>>  5 files changed, 292 insertions(+)
>>  create mode 100644 arch/arm64/boot/dts/qcom/pm7325.dtsi
>>  create mode 100644 arch/arm64/boot/dts/qcom/pm8350c.dtsi
>>  create mode 100644 arch/arm64/boot/dts/qcom/pmk8350.dtsi
>>  create mode 100644 arch/arm64/boot/dts/qcom/pmr735a.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..393b256
>> --- /dev/null
>> +++ b/arch/arm64/boot/dts/qcom/pm7325.dtsi
>> @@ -0,0 +1,60 @@
>> +// 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";
>> +		reg = <0x1 SPMI_USID>;
>> +		#address-cells = <1>;
>> +		#size-cells = <0>;
>> +
>> +		pm7325_tz: 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_temp_alarm: pm7325_tz {
> 
> '_' is not allowed to be used in node names, there's a few of these
> sprinkled through the patch. Please replace them with '-'.
> 

Okay, will replace them.

>> +		polling-delay-passive = <100>;
>> +		polling-delay = <0>;
>> +		thermal-governor = "step_wise";
>> +		thermal-sensors = <&pm7325_tz>;
>> +
>> +		trips {
>> +			pm7325_trip0: trip0 {
>> +				temperature = <95000>;
>> +				hysteresis = <0>;
>> +				type = "passive";
>> +			};
>> +
>> +			pm7325_trip1: trip1 {
>> +				temperature = <115000>;
>> +				hysteresis = <0>;
>> +				type = "critical";
>> +			};
>> +
>> +			pm7325_trip2: trip2 {
>> +				temperature = <145000>;
>> +				hysteresis = <0>;
>> +				type = "critical";
>> +			};
>> +		};
>> +	};
>> +};
> [..]
>> diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi 
>> b/arch/arm64/boot/dts/qcom/sc7280.dtsi
>> index 8af6d77..25402d4 100644
>> --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
>> +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
>> @@ -606,4 +606,12 @@
>>  			     <GIC_PPI 11 IRQ_TYPE_LEVEL_LOW>,
>>  			     <GIC_PPI 10 IRQ_TYPE_LEVEL_LOW>;
>>  	};
>> +
>> +	thermal_zones: thermal-zones {
>> +	};
>>  };
>> +
>> +#include "pm7325.dtsi"
>> +#include "pm8350c.dtsi"
>> +#include "pmk8350.dtsi"
>> +#include "pmr735a.dtsi"
> 
> Is there any particular reason for you including these at the end of
> sc7270.dtsi, rather than the top like we do in other platforms?
> 
> Also, are all SC7280 devices always coming with this quartet? We've 
> seen
> variations of this in the past and therefor typically include them from
> the board dts instead.
> 

No specific reason, will add them in board dts file.

> Regards,
> Bjorn

Thanks,
Satya Priya