| Message ID | 20220418205509.1102109-3-bhupesh.sharma@linaro.org (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Fix dtbs_check warning(s) for Qualcomm QMP PHY | expand |
On Mon, 18 Apr 2022 at 23:55, Bhupesh Sharma <bhupesh.sharma@linaro.org> wrote: > > Since a few boards based on QCoM qmp phy use the > 'vdda-max-microamp' & 'vdda-pll-max-microamp' properties to > describe the ufs phy nodes, add them to the dt-bindings doc as well. Ugh. They give a false sense that they are supported. I think in reality they are not used by the kernel. So, ideally, this patch should be accompanied with regulator core change. Or (better) drop them completely. > > This fixes the following '$ make dtbs_check' warning(s): > > sm8350-microsoft-surface-duo2.dt.yaml: phy@1d87000: > 'vdda-max-microamp', 'vdda-pll-max-microamp' do not match any of > the regexes: '^phy@[0-9a-f]+$', 'pinctrl-[0-9]+' > > Cc: Bjorn Andersson <bjorn.andersson@linaro.org> > Cc: Vinod Koul <vkoul@kernel.org> > Acked-by: Rob Herring <robh@kernel.org> > Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org> > --- > Documentation/devicetree/bindings/phy/qcom,qmp-phy.yaml | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/Documentation/devicetree/bindings/phy/qcom,qmp-phy.yaml b/Documentation/devicetree/bindings/phy/qcom,qmp-phy.yaml > index c39ead81ecd7..411c79dbfa15 100644 > --- a/Documentation/devicetree/bindings/phy/qcom,qmp-phy.yaml > +++ b/Documentation/devicetree/bindings/phy/qcom,qmp-phy.yaml > @@ -90,6 +90,14 @@ properties: > minItems: 1 > maxItems: 3 > > + vdda-max-microamp: > + description: > + Specifies max. load that can be drawn from phy supply. > + > + vdda-pll-max-microamp: > + description: > + Specifies max. load that can be drawn from pll supply. > + > vdda-phy-supply: > description: > Phandle to a regulator supply to PHY core block. > -- > 2.35.1 >
On Tue, 19 Apr 2022 at 04:04, Dmitry Baryshkov <dmitry.baryshkov@linaro.org> wrote: > > On Mon, 18 Apr 2022 at 23:55, Bhupesh Sharma <bhupesh.sharma@linaro.org> wrote: > > > > Since a few boards based on QCoM qmp phy use the > > 'vdda-max-microamp' & 'vdda-pll-max-microamp' properties to > > describe the ufs phy nodes, add them to the dt-bindings doc as well. > > Ugh. They give a false sense that they are supported. I think in > reality they are not used by the kernel. > So, ideally, this patch should be accompanied with regulator core change. > Or (better) drop them completely. Indeed. However, the earlier reviews were contrary to this understanding. Maybe, @Bjorn Andersson can help with more background on the same. Although I agree that since this appears mainly in sm8450 and sm8350 dts and is relevant for ufs qmp phy nodes, I can send patches for cleaning up the dts files instead. My hunch is that these have been copied over into the qcom dts/dtsi files from the similar ones described in [1]. [1]. https://www.kernel.org/doc/Documentation/devicetree/bindings/ufs/ufs-qcom.txt Thanks, Bhupesh > > > > This fixes the following '$ make dtbs_check' warning(s): > > > > sm8350-microsoft-surface-duo2.dt.yaml: phy@1d87000: > > 'vdda-max-microamp', 'vdda-pll-max-microamp' do not match any of > > the regexes: '^phy@[0-9a-f]+$', 'pinctrl-[0-9]+' > > > > Cc: Bjorn Andersson <bjorn.andersson@linaro.org> > > Cc: Vinod Koul <vkoul@kernel.org> > > Acked-by: Rob Herring <robh@kernel.org> > > Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org> > > --- > > Documentation/devicetree/bindings/phy/qcom,qmp-phy.yaml | 8 ++++++++ > > 1 file changed, 8 insertions(+) > > > > diff --git a/Documentation/devicetree/bindings/phy/qcom,qmp-phy.yaml b/Documentation/devicetree/bindings/phy/qcom,qmp-phy.yaml > > index c39ead81ecd7..411c79dbfa15 100644 > > --- a/Documentation/devicetree/bindings/phy/qcom,qmp-phy.yaml > > +++ b/Documentation/devicetree/bindings/phy/qcom,qmp-phy.yaml > > @@ -90,6 +90,14 @@ properties: > > minItems: 1 > > maxItems: 3 > > > > + vdda-max-microamp: > > + description: > > + Specifies max. load that can be drawn from phy supply. > > + > > + vdda-pll-max-microamp: > > + description: > > + Specifies max. load that can be drawn from pll supply. > > + > > vdda-phy-supply: > > description: > > Phandle to a regulator supply to PHY core block. > > -- > > 2.35.1 > > > > > -- > With best wishes > Dmitry
On Mon 18 Apr 13:55 PDT 2022, Bhupesh Sharma wrote: > Since a few boards based on QCoM qmp phy use the > 'vdda-max-microamp' & 'vdda-pll-max-microamp' properties to > describe the ufs phy nodes, add them to the dt-bindings doc as well. > > This fixes the following '$ make dtbs_check' warning(s): > > sm8350-microsoft-surface-duo2.dt.yaml: phy@1d87000: > 'vdda-max-microamp', 'vdda-pll-max-microamp' do not match any of > the regexes: '^phy@[0-9a-f]+$', 'pinctrl-[0-9]+' > > Cc: Bjorn Andersson <bjorn.andersson@linaro.org> > Cc: Vinod Koul <vkoul@kernel.org> > Acked-by: Rob Herring <robh@kernel.org> > Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org> > --- > Documentation/devicetree/bindings/phy/qcom,qmp-phy.yaml | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/Documentation/devicetree/bindings/phy/qcom,qmp-phy.yaml b/Documentation/devicetree/bindings/phy/qcom,qmp-phy.yaml > index c39ead81ecd7..411c79dbfa15 100644 > --- a/Documentation/devicetree/bindings/phy/qcom,qmp-phy.yaml > +++ b/Documentation/devicetree/bindings/phy/qcom,qmp-phy.yaml > @@ -90,6 +90,14 @@ properties: > minItems: 1 > maxItems: 3 > > + vdda-max-microamp: > + description: > + Specifies max. load that can be drawn from phy supply. > + > + vdda-pll-max-microamp: > + description: > + Specifies max. load that can be drawn from pll supply. It's not clear to me what an implementation would do with this information. As expressed here it sounds like it's a property of the specified regulator, so the driver should just request that information from the regulator framework. So let's wait with introducing such properties until we know. Thanks, Bjorn > + > vdda-phy-supply: > description: > Phandle to a regulator supply to PHY core block. > -- > 2.35.1 >
diff --git a/Documentation/devicetree/bindings/phy/qcom,qmp-phy.yaml b/Documentation/devicetree/bindings/phy/qcom,qmp-phy.yaml index c39ead81ecd7..411c79dbfa15 100644 --- a/Documentation/devicetree/bindings/phy/qcom,qmp-phy.yaml +++ b/Documentation/devicetree/bindings/phy/qcom,qmp-phy.yaml @@ -90,6 +90,14 @@ properties: minItems: 1 maxItems: 3 + vdda-max-microamp: + description: + Specifies max. load that can be drawn from phy supply. + + vdda-pll-max-microamp: + description: + Specifies max. load that can be drawn from pll supply. + vdda-phy-supply: description: Phandle to a regulator supply to PHY core block.