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[v2,0/3] Add RPMPD support for MSM8974

Message ID 20240210-msm8974-rpmpd-v2-0-595e2ff80ea1@z3ntu.xyz
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Series Add RPMPD support for MSM8974 | expand

Message

Luca Weiss Feb. 10, 2024, 4:38 p.m. UTC
Add driver support for the RPM power domains found on the different
MSM8974 devices.

Devicetree integration will come at a later point since also some
mostly remoteproc drivers need to be adjusted.

Also the MX power domains on this SoC seems to work quite a bit
differently, we'd need to send raw voltages to it, so these are ignored
in this series.

Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
---
Changes in v2:
- Drop MSM8974_VDDGFX_AO in all patches
- Link to v1: https://lore.kernel.org/r/20240210-msm8974-rpmpd-v1-0-de9355e6842a@z3ntu.xyz

---
Luca Weiss (3):
      dt-bindings: power: rpmpd: Add MSM8974 power domains
      pmdomain: qcom: rpmpd: Add MSM8974+PM8841 power domains
      pmdomain: qcom: rpmpd: Add MSM8974PRO+PMA8084 power domains

 .../devicetree/bindings/power/qcom,rpmpd.yaml      |  2 +
 drivers/pmdomain/qcom/rpmpd.c                      | 83 ++++++++++++++++++++++
 include/dt-bindings/power/qcom-rpmpd.h             |  7 ++
 3 files changed, 92 insertions(+)
---
base-commit: 6e3fa474051f3d276ea708bdb8e8e1f66d1d3ee5
change-id: 20240210-msm8974-rpmpd-6e48fe374275

Best regards,

Comments

Luca Weiss Feb. 11, 2024, 11:19 a.m. UTC | #1
On Sonntag, 11. Februar 2024 12:03:15 CET Stephan Gerhold wrote:
> On Sat, Feb 10, 2024 at 05:38:56PM +0100, Luca Weiss wrote:
> > Add the compatibles and indexes for the rpmpd in MSM8974, both with the
> > standard PM8841+PM8941 PMICs but also devices found with PMA8084.
> > 
> > Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
> > ---
> > 
> >  Documentation/devicetree/bindings/power/qcom,rpmpd.yaml | 2 ++
> >  include/dt-bindings/power/qcom-rpmpd.h                  | 7 +++++++
> >  2 files changed, 9 insertions(+)
> > 
> > diff --git a/Documentation/devicetree/bindings/power/qcom,rpmpd.yaml
> > b/Documentation/devicetree/bindings/power/qcom,rpmpd.yaml index
> > 2ff246cf8b81..929b7ef9c1bc 100644
> > --- a/Documentation/devicetree/bindings/power/qcom,rpmpd.yaml
> > +++ b/Documentation/devicetree/bindings/power/qcom,rpmpd.yaml
> > 
> > @@ -24,6 +24,8 @@ properties:
> >            - qcom,msm8917-rpmpd
> >            - qcom,msm8939-rpmpd
> >            - qcom,msm8953-rpmpd
> > 
> > +          - qcom,msm8974-rpmpd
> > +          - qcom,msm8974pro-pma8084-rpmpd
> > 
> >            - qcom,msm8976-rpmpd
> >            - qcom,msm8994-rpmpd
> >            - qcom,msm8996-rpmpd
> 
> This is maybe more something for the DT reviewers to decide but I wonder
> if it is a bit confusing/misleading to describe one particular PMIC with
> a generic compatible, and the other with a more specific one. Perhaps it
> would be clearer to include the PMIC name in both compatibles, i.e.
> "qcom,msm8974-pm8941-rpmpd" instead of "qcom,msm8974-rpmpd".

FWIW if we'd do that it should be qcom,msm8974-pm8841-rpmpd (so pm8841 instead 
of pm8941)

But also in the same vain, it was maybe a bit of a bad decision originally to 
make the compatibles SoC-specific and not SoC+PMIC-specific - though in nearly 
all cases this combo is fixed for a given SoC?

Anyways, I'll wait for more comments about this, I'm open to changing it 
either way.

Regards
Luca

> 
> The "qcom,msm8974-rpmpd" compatible could be maybe added as fallback.
> While it wouldn't be used for matching in the (Linux) driver the DT
> binding itself *is* "compatible" between the two PMICs because they both
> have the same power domain indexes.
> 
> i.e.
> 	compatible = "qcom,msm8974-pm8941-rpmpd", "qcom,msm8974-rpmpd";
> 	compatible = "qcom,msm8974pro-pma8084-rpmpd", "qcom,msm8974-rpmpd";
> 
> Thanks,
> Stephan
Krzysztof Kozlowski Feb. 11, 2024, 12:17 p.m. UTC | #2
On 10/02/2024 17:38, Luca Weiss wrote:
> Add the compatibles and indexes for the rpmpd in MSM8974, both with the
> standard PM8841+PM8941 PMICs but also devices found with PMA8084.
> 
> Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
> ---

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Best regards,
Krzysztof
Ulf Hansson Feb. 13, 2024, 12:33 p.m. UTC | #3
On Sat, 10 Feb 2024 at 17:39, Luca Weiss <luca@z3ntu.xyz> wrote:
>
> Add driver support for the RPM power domains found on the different
> MSM8974 devices.
>
> Devicetree integration will come at a later point since also some
> mostly remoteproc drivers need to be adjusted.
>
> Also the MX power domains on this SoC seems to work quite a bit
> differently, we'd need to send raw voltages to it, so these are ignored
> in this series.
>
> Signed-off-by: Luca Weiss <luca@z3ntu.xyz>

Applied for next, thanks!

Note that patch1 is also available at the immutable dt branch, if soc
maintainers need to pull it in too.

Kind regards
Uffe


> ---
> Changes in v2:
> - Drop MSM8974_VDDGFX_AO in all patches
> - Link to v1: https://lore.kernel.org/r/20240210-msm8974-rpmpd-v1-0-de9355e6842a@z3ntu.xyz
>
> ---
> Luca Weiss (3):
>       dt-bindings: power: rpmpd: Add MSM8974 power domains
>       pmdomain: qcom: rpmpd: Add MSM8974+PM8841 power domains
>       pmdomain: qcom: rpmpd: Add MSM8974PRO+PMA8084 power domains
>
>  .../devicetree/bindings/power/qcom,rpmpd.yaml      |  2 +
>  drivers/pmdomain/qcom/rpmpd.c                      | 83 ++++++++++++++++++++++
>  include/dt-bindings/power/qcom-rpmpd.h             |  7 ++
>  3 files changed, 92 insertions(+)
> ---
> base-commit: 6e3fa474051f3d276ea708bdb8e8e1f66d1d3ee5
> change-id: 20240210-msm8974-rpmpd-6e48fe374275
>
> Best regards,
> --
> Luca Weiss <luca@z3ntu.xyz>
>