Re: [PATCH v9 1/5] dt-bindings: Introduce SoC sleep stats bindings

Maulik Shah
2021-10-05T08:54:02Z

Hi,

On 9/25/2021 4:53 AM, Bjorn Andersson wrote:
> On Mon 06 Sep 00:27 CDT 2021, Maulik Shah wrote:
>
>> From: Mahesh Sivasubramanian <msivasub@codeaurora.org>
>>
>> Add device binding documentation for Qualcomm Technologies, Inc. (QTI)
>> SoC sleep stats driver. The driver is used for displaying SoC sleep
>> statistic maintained by Always On Processor or Resource Power Manager.
>>
>> Cc: devicetree@vger.kernel.org
>> Signed-off-by: Mahesh Sivasubramanian <msivasub@codeaurora.org>
>> Signed-off-by: Lina Iyer <ilina@codeaurora.org>
>> Signed-off-by: Maulik Shah <mkshah@codeaurora.org>
>> Reviewed-by: Rob Herring <robh@kernel.org>
>> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
>> Reviewed-by: Stephen Boyd <swboyd@chromium.org>
>> ---
>> .../bindings/soc/qcom/soc-sleep-stats.yaml | 48 ++++++++++++++++++++++
>> 1 file changed, 48 insertions(+)
>> create mode 100644 Documentation/devicetree/bindings/soc/qcom/soc-sleep-stats.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/soc/qcom/soc-sleep-stats.yaml b/Documentation/devicetree/bindings/soc/qcom/soc-sleep-stats.yaml
>> new file mode 100644
>> index 0000000..4161156
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/soc/qcom/soc-sleep-stats.yaml
>> @@ -0,0 +1,48 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/soc/qcom/soc-sleep-stats.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Qualcomm Technologies, Inc. (QTI) SoC sleep stats bindings
>> +
>> +maintainers:
>> + - Maulik Shah <mkshah@codeaurora.org>
>> + - Lina Iyer <ilina@codeaurora.org>
>
> Lina's address is no longer valid.

Removed in v10.

>
>> +
>> +description:
>> + Always On Processor/Resource Power Manager maintains statistics of the SoC
>> + sleep modes involving powering down of the rails and oscillator clock.
>> +
>> + Statistics includes SoC sleep mode type, number of times low power mode were
>> + entered, time of last entry, time of last exit and accumulated sleep duration.
>> +
>> +properties:
>> + compatible:
>> + enum:
>> + - qcom,rpmh-sleep-stats
>> + - qcom,rpm-sleep-stats
>> +
>> + reg:
>> + maxItems: 1
>> +
>> +required:
>> + - compatible
>> + - reg
>> +
>> +additionalProperties: false
>> +
>> +examples:
>> + # Example of rpmh sleep stats
>> + - |
>> + aop_msgram@c3f0048 {
>> + compatible = "qcom,rpmh-sleep-stats";
>> + reg = <0x0c3f0048 0x400>;
>
> As I tested this series I did find it quite odd that the start address
> of this block is $48 bytes into a page and still the length is an even
> $400.
>
> Is there any single platform where qcom,rpmh-sleep-stats doesn't start
> at an offset of $48 from the beginning of its msgram? Could we move this
> number to the driver?
>
> Regards,
> Bjorn

Sure, i have moved 0x48 into driver in v10.

Thanks,
Maulik

>
>> + };
>> + # Example of rpm sleep stats
>> + - |
>> + rpm_msgram@4690000 {
>> + compatible = "qcom,rpm-sleep-stats";
>> + reg = <0x04690000 0x400>;
>> + };
>> +...
>> --
>> QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member
>> of Code Aurora Forum, hosted by The Linux Foundation
>>

--
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a
member of Code Aurora Forum, hosted by The Linux Foundation