diff mbox series

[1/8] dt-bindings: qcom: rpmh-regulator: Add compatible for SA8155p-adp board pmics

Message ID 20210607113840.15435-2-bhupesh.sharma@linaro.org (mailing list archive)
State Superseded
Headers show
Series arm64: dts: qcom: Add SA8155p-adp board DTS | expand

Commit Message

Bhupesh Sharma June 7, 2021, 11:38 a.m. UTC 
Add compatible strings for pmm8155au_1 and pmm8155au_2 pmics
found on SA8155p-adp board.

Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Vinod Koul <vkoul@kernel.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Andy Gross <agross@kernel.org>
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-gpio@vger.kernel.org
Cc: bhupesh.linux@gmail.com
Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
---
 .../devicetree/bindings/regulator/qcom,rpmh-regulator.yaml      | 2 ++
 1 file changed, 2 insertions(+)

Comments

Bjorn Andersson June 11, 2021, 2:48 a.m. UTC | #1 
On Mon 07 Jun 06:38 CDT 2021, Bhupesh Sharma wrote:

> Add compatible strings for pmm8155au_1 and pmm8155au_2 pmics
> found on SA8155p-adp board.
> 
> Cc: Linus Walleij <linus.walleij@linaro.org>
> Cc: Liam Girdwood <lgirdwood@gmail.com>
> Cc: Mark Brown <broonie@kernel.org>
> Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
> Cc: Vinod Koul <vkoul@kernel.org>
> Cc: Rob Herring <robh+dt@kernel.org>
> Cc: Andy Gross <agross@kernel.org>
> Cc: devicetree@vger.kernel.org
> Cc: linux-kernel@vger.kernel.org
> Cc: linux-gpio@vger.kernel.org
> Cc: bhupesh.linux@gmail.com
> Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
> ---
>  .../devicetree/bindings/regulator/qcom,rpmh-regulator.yaml      | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/regulator/qcom,rpmh-regulator.yaml b/Documentation/devicetree/bindings/regulator/qcom,rpmh-regulator.yaml
> index e561a5b941e4..ea5cd71aa0c7 100644
> --- a/Documentation/devicetree/bindings/regulator/qcom,rpmh-regulator.yaml
> +++ b/Documentation/devicetree/bindings/regulator/qcom,rpmh-regulator.yaml
> @@ -55,6 +55,8 @@ properties:
>        - qcom,pm8009-1-rpmh-regulators
>        - qcom,pm8150-rpmh-regulators
>        - qcom,pm8150l-rpmh-regulators
> +      - qcom,pmm8155au-1-rpmh-regulators
> +      - qcom,pmm8155au-2-rpmh-regulators

Looking at the component documentation and the schematics I think the
component is "PMM8155AU" and we have two of them.

Unless I'm mistaken we should have the compatible describe the single
component and we should have DT describe the fact that we have 2 of
them.

Regards,
Bjorn

>        - qcom,pm8350-rpmh-regulators
>        - qcom,pm8350c-rpmh-regulators
>        - qcom,pm8998-rpmh-regulators
> -- 
> 2.31.1
>
Bhupesh Sharma June 14, 2021, 8:05 a.m. UTC | #2 
Hello Bjorn,

Thanks for the review comments.

On Fri, 11 Jun 2021 at 08:18, Bjorn Andersson
<bjorn.andersson@linaro.org> wrote:
>
> On Mon 07 Jun 06:38 CDT 2021, Bhupesh Sharma wrote:
>
> > Add compatible strings for pmm8155au_1 and pmm8155au_2 pmics
> > found on SA8155p-adp board.
> >
> > Cc: Linus Walleij <linus.walleij@linaro.org>
> > Cc: Liam Girdwood <lgirdwood@gmail.com>
> > Cc: Mark Brown <broonie@kernel.org>
> > Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
> > Cc: Vinod Koul <vkoul@kernel.org>
> > Cc: Rob Herring <robh+dt@kernel.org>
> > Cc: Andy Gross <agross@kernel.org>
> > Cc: devicetree@vger.kernel.org
> > Cc: linux-kernel@vger.kernel.org
> > Cc: linux-gpio@vger.kernel.org
> > Cc: bhupesh.linux@gmail.com
> > Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
> > ---
> >  .../devicetree/bindings/regulator/qcom,rpmh-regulator.yaml      | 2 ++
> >  1 file changed, 2 insertions(+)
> >
> > diff --git a/Documentation/devicetree/bindings/regulator/qcom,rpmh-regulator.yaml b/Documentation/devicetree/bindings/regulator/qcom,rpmh-regulator.yaml
> > index e561a5b941e4..ea5cd71aa0c7 100644
> > --- a/Documentation/devicetree/bindings/regulator/qcom,rpmh-regulator.yaml
> > +++ b/Documentation/devicetree/bindings/regulator/qcom,rpmh-regulator.yaml
> > @@ -55,6 +55,8 @@ properties:
> >        - qcom,pm8009-1-rpmh-regulators
> >        - qcom,pm8150-rpmh-regulators
> >        - qcom,pm8150l-rpmh-regulators
> > +      - qcom,pmm8155au-1-rpmh-regulators
> > +      - qcom,pmm8155au-2-rpmh-regulators
>
> Looking at the component documentation and the schematics I think the
> component is "PMM8155AU" and we have two of them.
>
> Unless I'm mistaken we should have the compatible describe the single
> component and we should have DT describe the fact that we have 2 of
> them.

If we refer to the PM8155AU device specifications, there are two
regulators mentioned there PMM8155AU_1 and PMM8155AU_2. Although most
parameters of the regulators seem similar the smps regulator summary
for both appear different (Transient Load, mA ratings etc).

Although most of these differences don't probably matter to the Linux
world, others like the gpios on the pmic are different.

So, IMO, it makes sense to mention the different pmic types on the board.

Please let me know your views on the same.

Thanks,
Bhupesh

>
> >        - qcom,pm8350-rpmh-regulators
> >        - qcom,pm8350c-rpmh-regulators
> >        - qcom,pm8998-rpmh-regulators
> > --
> > 2.31.1
> >
Bjorn Andersson June 14, 2021, 4:28 p.m. UTC | #3 
On Mon 14 Jun 03:05 CDT 2021, Bhupesh Sharma wrote:

> Hello Bjorn,
> 
> Thanks for the review comments.
> 
> On Fri, 11 Jun 2021 at 08:18, Bjorn Andersson
> <bjorn.andersson@linaro.org> wrote:
> >
> > On Mon 07 Jun 06:38 CDT 2021, Bhupesh Sharma wrote:
> >
> > > Add compatible strings for pmm8155au_1 and pmm8155au_2 pmics
> > > found on SA8155p-adp board.
> > >
> > > Cc: Linus Walleij <linus.walleij@linaro.org>
> > > Cc: Liam Girdwood <lgirdwood@gmail.com>
> > > Cc: Mark Brown <broonie@kernel.org>
> > > Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
> > > Cc: Vinod Koul <vkoul@kernel.org>
> > > Cc: Rob Herring <robh+dt@kernel.org>
> > > Cc: Andy Gross <agross@kernel.org>
> > > Cc: devicetree@vger.kernel.org
> > > Cc: linux-kernel@vger.kernel.org
> > > Cc: linux-gpio@vger.kernel.org
> > > Cc: bhupesh.linux@gmail.com
> > > Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
> > > ---
> > >  .../devicetree/bindings/regulator/qcom,rpmh-regulator.yaml      | 2 ++
> > >  1 file changed, 2 insertions(+)
> > >
> > > diff --git a/Documentation/devicetree/bindings/regulator/qcom,rpmh-regulator.yaml b/Documentation/devicetree/bindings/regulator/qcom,rpmh-regulator.yaml
> > > index e561a5b941e4..ea5cd71aa0c7 100644
> > > --- a/Documentation/devicetree/bindings/regulator/qcom,rpmh-regulator.yaml
> > > +++ b/Documentation/devicetree/bindings/regulator/qcom,rpmh-regulator.yaml
> > > @@ -55,6 +55,8 @@ properties:
> > >        - qcom,pm8009-1-rpmh-regulators
> > >        - qcom,pm8150-rpmh-regulators
> > >        - qcom,pm8150l-rpmh-regulators
> > > +      - qcom,pmm8155au-1-rpmh-regulators
> > > +      - qcom,pmm8155au-2-rpmh-regulators
> >
> > Looking at the component documentation and the schematics I think the
> > component is "PMM8155AU" and we have two of them.
> >
> > Unless I'm mistaken we should have the compatible describe the single
> > component and we should have DT describe the fact that we have 2 of
> > them.
> 
> If we refer to the PM8155AU device specifications, there are two
> regulators mentioned there PMM8155AU_1 and PMM8155AU_2. Although most
> parameters of the regulators seem similar the smps regulator summary
> for both appear different (Transient Load, mA ratings etc).
> 
> Although most of these differences don't probably matter to the Linux
> world, others like the gpios on the pmic are different.
> 
> So, IMO, it makes sense to mention the different pmic types on the board.
> 
> Please let me know your views on the same.
> 

Afaict, they are both physically the same component, but there is some
configuration differences between them. I don't see any differences that
will show up in Linux, but afaict we would capture those in the DT
anyways.

Let me know if you see anything I'm missing, but I think we should have
a single compatible.

Regards,
Bjorn

> Thanks,
> Bhupesh
> 
> >
> > >        - qcom,pm8350-rpmh-regulators
> > >        - qcom,pm8350c-rpmh-regulators
> > >        - qcom,pm8998-rpmh-regulators
> > > --
> > > 2.31.1
> > >
Bhupesh Sharma June 15, 2021, 4:43 a.m. UTC | #4 
On Mon, 14 Jun 2021 at 21:58, Bjorn Andersson
<bjorn.andersson@linaro.org> wrote:
>
> On Mon 14 Jun 03:05 CDT 2021, Bhupesh Sharma wrote:
>
> > Hello Bjorn,
> >
> > Thanks for the review comments.
> >
> > On Fri, 11 Jun 2021 at 08:18, Bjorn Andersson
> > <bjorn.andersson@linaro.org> wrote:
> > >
> > > On Mon 07 Jun 06:38 CDT 2021, Bhupesh Sharma wrote:
> > >
> > > > Add compatible strings for pmm8155au_1 and pmm8155au_2 pmics
> > > > found on SA8155p-adp board.
> > > >
> > > > Cc: Linus Walleij <linus.walleij@linaro.org>
> > > > Cc: Liam Girdwood <lgirdwood@gmail.com>
> > > > Cc: Mark Brown <broonie@kernel.org>
> > > > Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
> > > > Cc: Vinod Koul <vkoul@kernel.org>
> > > > Cc: Rob Herring <robh+dt@kernel.org>
> > > > Cc: Andy Gross <agross@kernel.org>
> > > > Cc: devicetree@vger.kernel.org
> > > > Cc: linux-kernel@vger.kernel.org
> > > > Cc: linux-gpio@vger.kernel.org
> > > > Cc: bhupesh.linux@gmail.com
> > > > Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
> > > > ---
> > > >  .../devicetree/bindings/regulator/qcom,rpmh-regulator.yaml      | 2 ++
> > > >  1 file changed, 2 insertions(+)
> > > >
> > > > diff --git a/Documentation/devicetree/bindings/regulator/qcom,rpmh-regulator.yaml b/Documentation/devicetree/bindings/regulator/qcom,rpmh-regulator.yaml
> > > > index e561a5b941e4..ea5cd71aa0c7 100644
> > > > --- a/Documentation/devicetree/bindings/regulator/qcom,rpmh-regulator.yaml
> > > > +++ b/Documentation/devicetree/bindings/regulator/qcom,rpmh-regulator.yaml
> > > > @@ -55,6 +55,8 @@ properties:
> > > >        - qcom,pm8009-1-rpmh-regulators
> > > >        - qcom,pm8150-rpmh-regulators
> > > >        - qcom,pm8150l-rpmh-regulators
> > > > +      - qcom,pmm8155au-1-rpmh-regulators
> > > > +      - qcom,pmm8155au-2-rpmh-regulators
> > >
> > > Looking at the component documentation and the schematics I think the
> > > component is "PMM8155AU" and we have two of them.
> > >
> > > Unless I'm mistaken we should have the compatible describe the single
> > > component and we should have DT describe the fact that we have 2 of
> > > them.
> >
> > If we refer to the PM8155AU device specifications, there are two
> > regulators mentioned there PMM8155AU_1 and PMM8155AU_2. Although most
> > parameters of the regulators seem similar the smps regulator summary
> > for both appear different (Transient Load, mA ratings etc).
> >
> > Although most of these differences don't probably matter to the Linux
> > world, others like the gpios on the pmic are different.
> >
> > So, IMO, it makes sense to mention the different pmic types on the board.
> >
> > Please let me know your views on the same.
> >
>
> Afaict, they are both physically the same component, but there is some
> configuration differences between them. I don't see any differences that
> will show up in Linux, but afaict we would capture those in the DT
> anyways.
>
> Let me know if you see anything I'm missing, but I think we should have
> a single compatible.

As discussed on IRC, let's go with the approach you suggested (I can
propose followup patches if I find something amiss). I will send a v2
shortly.

Thanks,
Bhupesh
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/regulator/qcom,rpmh-regulator.yaml b/Documentation/devicetree/bindings/regulator/qcom,rpmh-regulator.yaml
index e561a5b941e4..ea5cd71aa0c7 100644
--- a/Documentation/devicetree/bindings/regulator/qcom,rpmh-regulator.yaml
+++ b/Documentation/devicetree/bindings/regulator/qcom,rpmh-regulator.yaml
@@ -55,6 +55,8 @@  properties:
       - qcom,pm8009-1-rpmh-regulators
       - qcom,pm8150-rpmh-regulators
       - qcom,pm8150l-rpmh-regulators
+      - qcom,pmm8155au-1-rpmh-regulators
+      - qcom,pmm8155au-2-rpmh-regulators
       - qcom,pm8350-rpmh-regulators
       - qcom,pm8350c-rpmh-regulators
       - qcom,pm8998-rpmh-regulators