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Message-ID: <20211027185133.0d7831fc@jic23-huawei>
Date: Wed, 27 Oct 2021 18:51:33 +0100
From: Jonathan Cameron <jic23@...nel.org>
To: Jishnu Prakash <quic_jprakash@...cinc.com>
Cc: <agross@...nel.org>, <bjorn.andersson@...aro.org>,
<devicetree@...r.kernel.org>, <mka@...omium.org>,
<dmitry.baryshkov@...aro.org>, <robh+dt@...nel.org>,
<knaack.h@....de>, <lars@...afoo.de>, <pmeerw@...erw.net>,
<manivannan.sadhasivam@...aro.org>, <linus.walleij@...aro.org>,
<quic_kgunda@...cinc.com>, <quic_aghayal@...cinc.com>,
<daniel.lezcano@...aro.org>, <rui.zhang@...el.com>,
<quic_subbaram@...cinc.com>, <Jonathan.Cameron@...wei.com>,
<amitk@...nel.org>, "Rafael J. Wysocki" <rafael@...nel.org>,
<linux-arm-msm@...r.kernel.org>, <linux-pm@...r.kernel.org>,
<linux-kernel@...r.kernel.org>,
<linux-arm-msm-owner@...r.kernel.org>, <linux-iio@...r.kernel.org>
Subject: Re: [PATCH V2 1/3] dt-bindings: thermal: qcom: add PMIC5 Gen2
ADC_TM bindings
On Tue, 26 Oct 2021 21:34:33 +0530
Jishnu Prakash <quic_jprakash@...cinc.com> wrote:
> Add documentation for PMIC5 Gen2 ADC_TM peripheral.
> It is used for monitoring ADC channel thresholds for PMIC7-type
> PMICs. It is present on PMK8350, like PMIC7 ADC and can be used
> to monitor up to 8 ADC channels, from any of the PMIC7 PMICs
> on a target, through PBS(Programmable Boot Sequence).
>
> Signed-off-by: Jishnu Prakash <quic_jprakash@...cinc.com>
Hi Jishnu,
A few comments inline.
Thanks,
Jonathan
> ---
> .../bindings/thermal/qcom-spmi-adc-tm5.yaml | 83 +++++++++++++++++++++-
> 1 file changed, 81 insertions(+), 2 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/thermal/qcom-spmi-adc-tm5.yaml b/Documentation/devicetree/bindings/thermal/qcom-spmi-adc-tm5.yaml
> index 3ea8c0c..71a05a3 100644
> --- a/Documentation/devicetree/bindings/thermal/qcom-spmi-adc-tm5.yaml
> +++ b/Documentation/devicetree/bindings/thermal/qcom-spmi-adc-tm5.yaml
> @@ -10,7 +10,9 @@ maintainers:
>
> properties:
> compatible:
> - const: qcom,spmi-adc-tm5
> + enum:
> + - qcom,spmi-adc-tm5
> + - qcom,spmi-adc-tm5-gen2
>
> reg:
> maxItems: 1
> @@ -33,6 +35,7 @@ properties:
> qcom,avg-samples:
> $ref: /schemas/types.yaml#/definitions/uint32
> description: Number of samples to be used for measurement.
> + Not applicable for Gen2 ADC_TM peripheral.
Why not use an matching statement to set
qcom,avg_samples: false
for that compatible rather than relying on the fuzzy nature of a coment.
> enum:
> - 1
> - 2
> @@ -45,6 +48,7 @@ properties:
> $ref: /schemas/types.yaml#/definitions/uint32
> description: This parameter is used to decrease ADC sampling rate.
> Quicker measurements can be made by reducing decimation ratio.
> + Not applicable for Gen2 ADC_TM peripheral.
> enum:
> - 250
> - 420
> @@ -93,6 +97,29 @@ patternProperties:
> - const: 1
> - enum: [ 1, 3, 4, 6, 20, 8, 10 ]
>
> + qcom,avg-samples:
> + $ref: /schemas/types.yaml#/definitions/uint32
> + description: Number of samples to be used for measurement.
> + This property in child node is applicable only for Gen2 ADC_TM peripheral.
> + enum:
> + - 1
> + - 2
> + - 4
> + - 8
> + - 16
> + default: 1
> +
> + qcom,decimation:
> + $ref: /schemas/types.yaml#/definitions/uint32
> + description: This parameter is used to decrease ADC sampling rate.
> + Quicker measurements can be made by reducing decimation ratio.
> + This property in child node is applicable only for Gen2 ADC_TM peripheral.
> + enum:
> + - 85
> + - 340
> + - 1360
> + default: 1360
> +
> required:
> - reg
> - io-channels
> @@ -124,7 +151,7 @@ examples:
> #size-cells = <0>;
> #io-channel-cells = <1>;
>
> - /* Other propreties are omitted */
> + /* Other properties are omitted */
Should really be a separate patch, but up to Rob.
> conn-therm@4f {
> reg = <ADC5_AMUX_THM3_100K_PU>;
> qcom,ratiometric;
> @@ -148,4 +175,56 @@ examples:
> };
> };
> };
> +
> + - |
> + #include <dt-bindings/iio/qcom,spmi-adc7-pmk8350.h>
> + #include <dt-bindings/iio/qcom,spmi-adc7-pm8350.h>
> + #include <dt-bindings/interrupt-controller/irq.h>
> + spmi_bus {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + pmk8350_vadc: adc@...0 {
> + reg = <0x3100>;
> + compatible = "qcom,spmi-adc7";
> + #address-cells = <1>;
> + #size-cells = <0>;
> + #io-channel-cells = <1>;
> +
> + /* Other properties are omitted */
> + xo-therm@44 {
> + reg = <PMK8350_ADC7_AMUX_THM1_100K_PU>;
> + qcom,ratiometric;
> + qcom,hw-settle-time = <200>;
> + };
> +
> + conn-therm@47 {
> + reg = <PM8350_ADC7_AMUX_THM4_100K_PU>;
> + qcom,ratiometric;
> + qcom,hw-settle-time = <200>;
> + };
> + };
> +
> + pmk8350_adc_tm: adc-tm@...0 {
> + compatible = "qcom,spmi-adc-tm5-gen2";
> + reg = <0x3400>;
> + interrupts = <0x0 0x34 0x0 IRQ_TYPE_EDGE_RISING>;
> + #thermal-sensor-cells = <1>;
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + pmk8350-xo-therm@0 {
> + reg = <0>;
> + io-channels = <&pmk8350_vadc PMK8350_ADC7_AMUX_THM1_100K_PU>;
> + qcom,ratiometric;
> + qcom,hw-settle-time-us = <200>;
Perhaps include the new properties you are defining in the example?
> + };
> +
> + conn-therm@1 {
> + reg = <1>;
> + io-channels = <&pmk8350_vadc PM8350_ADC7_AMUX_THM4_100K_PU>;
> + qcom,ratiometric;
> + qcom,hw-settle-time-us = <200>;
> + };
> + };
> + };
> ...
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