| Message ID | 65c39c405076627bd43ec94c211c6998191b9f16.1531136000.git.amit.kucheria@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | [v6,1/7] thermal: tsens: Get rid of unused fields in structure | expand |
On Mon 09 Jul 04:43 PDT 2018, Amit Kucheria wrote: > SDM845 has two tsens blocks, one with 13 sensors and the other with 8 > sensors. It uses version 2 of the TSENS IP, so use the fallback property to > allow more common code. > > Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Regards, Bjorn > --- > arch/arm64/boot/dts/qcom/sdm845.dtsi | 16 ++++++++++++++++ > 1 file changed, 16 insertions(+) > > diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi > index cdaabeb..ba2899c 100644 > --- a/arch/arm64/boot/dts/qcom/sdm845.dtsi > +++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi > @@ -221,6 +221,22 @@ > #interrupt-cells = <2>; > }; > > + tsens0: tsens@c263000 { > + compatible = "qcom,sdm845-tsens", "qcom,tsens-v2"; > + reg = <0xc263000 0x1ff>, /* TM */ > + <0xc222000 0x1ff>; /* SROT */ > + #qcom,sensors = <13>; > + #thermal-sensor-cells = <1>; > + }; > + > + tsens1: tsens@c265000 { > + compatible = "qcom,sdm845-tsens", "qcom,tsens-v2"; > + reg = <0xc265000 0x1ff>, /* TM */ > + <0xc223000 0x1ff>; /* SROT */ > + #qcom,sensors = <8>; > + #thermal-sensor-cells = <1>; > + }; > + > spmi_bus: spmi@c440000 { > compatible = "qcom,spmi-pmic-arb"; > reg = <0xc440000 0x1100>, > -- > 2.7.4 >
On Wed, Jul 11, 2018 at 11:44:13AM -0700, Doug Anderson wrote: > Hi, > > On Mon, Jul 9, 2018 at 4:43 AM, Amit Kucheria <amit.kucheria@linaro.org> wrote: > > SDM845 has two tsens blocks, one with 13 sensors and the other with 8 > > sensors. It uses version 2 of the TSENS IP, so use the fallback property to > > allow more common code. > > > > Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org> > > --- > > arch/arm64/boot/dts/qcom/sdm845.dtsi | 16 ++++++++++++++++ > > 1 file changed, 16 insertions(+) > > > > diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi > > index cdaabeb..ba2899c 100644 > > --- a/arch/arm64/boot/dts/qcom/sdm845.dtsi > > +++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi > > @@ -221,6 +221,22 @@ > > #interrupt-cells = <2>; > > }; > > > > + tsens0: tsens@c263000 { > > As per my comments in the bindings, nit that this should probably be > "thermal-sensor" not "tsens", AKA: > > tsens0: thermal-sensor@c263000 { > > > + compatible = "qcom,sdm845-tsens", "qcom,tsens-v2"; > > + reg = <0xc263000 0x1ff>, /* TM */ > > + <0xc222000 0x1ff>; /* SROT */ > > + #qcom,sensors = <13>; > > As per my comment in the bindings and the code, I'm confused about the > whole "#qcom,sensors" bit. It's not documented and doesn't seem > hooked up in the code either. > > ...but if people have tested this, perhaps I'm confused. How can > things work if num_sensors is 0??? The mystery is resolved by: commit 6d7c70d1cd6526dc79e3d3b3faae1c40c1681168 Author: Bjorn Andersson <bjorn.andersson@linaro.org> Date: Mon May 7 16:53:39 2018 -0700 thermal: qcom: tsens: Allow number of sensors to come from DT For platforms that has multiple copies of the TSENS hardware block it's necessary to be able to specify the number of sensors per block in DeviceTree. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Eduardo Valentin <edubezval@gmail.com> I bumped into this during testing ;-)
Hi Matthias, On Wed, Jul 11, 2018 at 2:51 PM, Matthias Kaehlcke <mka@chromium.org> wrote: > On Wed, Jul 11, 2018 at 11:44:13AM -0700, Doug Anderson wrote: >> Hi, >> >> On Mon, Jul 9, 2018 at 4:43 AM, Amit Kucheria <amit.kucheria@linaro.org> wrote: >> > SDM845 has two tsens blocks, one with 13 sensors and the other with 8 >> > sensors. It uses version 2 of the TSENS IP, so use the fallback property to >> > allow more common code. >> > >> > Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org> >> > --- >> > arch/arm64/boot/dts/qcom/sdm845.dtsi | 16 ++++++++++++++++ >> > 1 file changed, 16 insertions(+) >> > >> > diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi >> > index cdaabeb..ba2899c 100644 >> > --- a/arch/arm64/boot/dts/qcom/sdm845.dtsi >> > +++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi >> > @@ -221,6 +221,22 @@ >> > #interrupt-cells = <2>; >> > }; >> > >> > + tsens0: tsens@c263000 { >> >> As per my comments in the bindings, nit that this should probably be >> "thermal-sensor" not "tsens", AKA: >> >> tsens0: thermal-sensor@c263000 { >> >> > + compatible = "qcom,sdm845-tsens", "qcom,tsens-v2"; >> > + reg = <0xc263000 0x1ff>, /* TM */ >> > + <0xc222000 0x1ff>; /* SROT */ >> > + #qcom,sensors = <13>; >> >> As per my comment in the bindings and the code, I'm confused about the >> whole "#qcom,sensors" bit. It's not documented and doesn't seem >> hooked up in the code either. >> >> ...but if people have tested this, perhaps I'm confused. How can >> things work if num_sensors is 0??? > > The mystery is resolved by: > > commit 6d7c70d1cd6526dc79e3d3b3faae1c40c1681168 > Author: Bjorn Andersson <bjorn.andersson@linaro.org> > Date: Mon May 7 16:53:39 2018 -0700 > > thermal: qcom: tsens: Allow number of sensors to come from DT > > For platforms that has multiple copies of the TSENS hardware block it's > necessary to be able to specify the number of sensors per block in DeviceTree. > > Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> > Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org> > Reviewed-by: Rob Herring <robh@kernel.org> > Signed-off-by: Eduardo Valentin <edubezval@gmail.com> > > > I bumped into this during testing ;-) Ah, now it makes sense to me! Serves me right for assuming it would be in the same series and not checking if it was something that had already landed. Thanks. Please ignore the parts of my comments related to the "#qcom,sensors" property. I guess Rob must have thought that the "#" in the name was fine and he's the one in charge not me. -Doug
diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi index cdaabeb..ba2899c 100644 --- a/arch/arm64/boot/dts/qcom/sdm845.dtsi +++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi @@ -221,6 +221,22 @@ #interrupt-cells = <2>; }; + tsens0: tsens@c263000 { + compatible = "qcom,sdm845-tsens", "qcom,tsens-v2"; + reg = <0xc263000 0x1ff>, /* TM */ + <0xc222000 0x1ff>; /* SROT */ + #qcom,sensors = <13>; + #thermal-sensor-cells = <1>; + }; + + tsens1: tsens@c265000 { + compatible = "qcom,sdm845-tsens", "qcom,tsens-v2"; + reg = <0xc265000 0x1ff>, /* TM */ + <0xc223000 0x1ff>; /* SROT */ + #qcom,sensors = <8>; + #thermal-sensor-cells = <1>; + }; + spmi_bus: spmi@c440000 { compatible = "qcom,spmi-pmic-arb"; reg = <0xc440000 0x1100>,
SDM845 has two tsens blocks, one with 13 sensors and the other with 8 sensors. It uses version 2 of the TSENS IP, so use the fallback property to allow more common code. Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org> --- arch/arm64/boot/dts/qcom/sdm845.dtsi | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) -- 2.7.4