| Message ID | 20230823222741.89584-2-david@ixit.cz |
|---|---|
| State | New |
| Headers | show |
| Series | None | expand |
Hi, On Wed, Aug 23, 2023 at 3:28 PM David Heidelberg <david@ixit.cz> wrote: > > Cheza firmware doesn't allow controlling LMh from the operating system. > > Fixes: 36c6581214c4 ("arm64: dts: qcom: sdm845: Add support for LMh node") > Suggested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> > Signed-off-by: David Heidelberg <david@ixit.cz> > --- > arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi | 14 ++++++++++++++ > 1 file changed, 14 insertions(+) > > diff --git a/arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi b/arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi > index d86b0d112110..8cc8fc290fd3 100644 > --- a/arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi > +++ b/arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi > @@ -143,6 +143,10 @@ panel_in_edp: endpoint { > }; > }; > > +&cpufreq_hw { > + /delete-property/ interrupts-extended; /* reference to lmh_cluster[01] */ > +}; > + > &psci { > /delete-node/ power-domain-cpu0; > /delete-node/ power-domain-cpu1; > @@ -275,6 +279,14 @@ &BIG_CPU_SLEEP_1 > &CLUSTER_SLEEP_0>; > }; > > +&lmh_cluster0 { > + status = "disabled"; > +}; > + > +&lmh_cluster1 { > + status = "disabled"; > +}; It's not a huge deal to me, but as I understand it usually you'd put the "disabled" in sdm845.dtsi and then it would be up to all the other sdm845 boards to mark this as "okay". > /* > * Reserved memory changes > * > @@ -338,6 +350,8 @@ flash@0 { > > > &apps_rsc { > + /delete-property/ power-domains; > + Is the deletion of the "power-domains" here related to LMh? That seems like it was added to sdm845.dtsi in a separate commit that doesn't talk about LMh at all... -Doug
On Thu, 24 Aug 2023 at 21:25, Doug Anderson <dianders@chromium.org> wrote: > > Hi, > > On Wed, Aug 23, 2023 at 3:28 PM David Heidelberg <david@ixit.cz> wrote: > > > > Cheza firmware doesn't allow controlling LMh from the operating system. > > > > Fixes: 36c6581214c4 ("arm64: dts: qcom: sdm845: Add support for LMh node") > > Suggested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> > > Signed-off-by: David Heidelberg <david@ixit.cz> > > --- > > arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi | 14 ++++++++++++++ > > 1 file changed, 14 insertions(+) > > > > diff --git a/arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi b/arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi > > index d86b0d112110..8cc8fc290fd3 100644 > > --- a/arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi > > +++ b/arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi > > @@ -143,6 +143,10 @@ panel_in_edp: endpoint { > > }; > > }; > > > > +&cpufreq_hw { > > + /delete-property/ interrupts-extended; /* reference to lmh_cluster[01] */ > > +}; > > + > > &psci { > > /delete-node/ power-domain-cpu0; > > /delete-node/ power-domain-cpu1; > > @@ -275,6 +279,14 @@ &BIG_CPU_SLEEP_1 > > &CLUSTER_SLEEP_0>; > > }; > > > > +&lmh_cluster0 { > > + status = "disabled"; > > +}; > > + > > +&lmh_cluster1 { > > + status = "disabled"; > > +}; > > It's not a huge deal to me, but as I understand it usually you'd put > the "disabled" in sdm845.dtsi and then it would be up to all the other > sdm845 boards to mark this as "okay". That depends. If a device is usually available (like LMH) and only disabled in some obscure cases, it is better to disable it only in this obscure case (in my opinion). > > /* > > * Reserved memory changes > > * > > @@ -338,6 +350,8 @@ flash@0 { > > > > > > &apps_rsc { > > + /delete-property/ power-domains; > > + > > Is the deletion of the "power-domains" here related to LMh? That seems > like it was added to sdm845.dtsi in a separate commit that doesn't > talk about LMh at all... CLUSTER_PD becomes unavailable after the previous patch. So maybe you are right and this chunk should be moved to the previous patch.
On 24.08.2023 20:24, Doug Anderson wrote: > Hi, > > On Wed, Aug 23, 2023 at 3:28 PM David Heidelberg <david@ixit.cz> wrote: >> >> Cheza firmware doesn't allow controlling LMh from the operating system. >> >> Fixes: 36c6581214c4 ("arm64: dts: qcom: sdm845: Add support for LMh node") >> Suggested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> >> Signed-off-by: David Heidelberg <david@ixit.cz> >> --- >> arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi | 14 ++++++++++++++ >> 1 file changed, 14 insertions(+) >> >> diff --git a/arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi b/arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi >> index d86b0d112110..8cc8fc290fd3 100644 >> --- a/arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi >> +++ b/arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi >> @@ -143,6 +143,10 @@ panel_in_edp: endpoint { >> }; >> }; >> >> +&cpufreq_hw { >> + /delete-property/ interrupts-extended; /* reference to lmh_cluster[01] */ >> +}; >> + >> &psci { >> /delete-node/ power-domain-cpu0; >> /delete-node/ power-domain-cpu1; >> @@ -275,6 +279,14 @@ &BIG_CPU_SLEEP_1 >> &CLUSTER_SLEEP_0>; >> }; >> >> +&lmh_cluster0 { >> + status = "disabled"; >> +}; >> + >> +&lmh_cluster1 { >> + status = "disabled"; >> +}; > > It's not a huge deal to me, but as I understand it usually you'd put > the "disabled" in sdm845.dtsi and then it would be up to all the other > sdm845 boards to mark this as "okay". it's more of a status = "nonstandardfirmware" :/ > > >> /* >> * Reserved memory changes >> * >> @@ -338,6 +350,8 @@ flash@0 { >> >> >> &apps_rsc { >> + /delete-property/ power-domains; >> + > > Is the deletion of the "power-domains" here related to LMh? That seems > like it was added to sdm845.dtsi in a separate commit that doesn't > talk about LMh at all... psci
diff --git a/arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi b/arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi index d86b0d112110..8cc8fc290fd3 100644 --- a/arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi +++ b/arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi @@ -143,6 +143,10 @@ panel_in_edp: endpoint { }; }; +&cpufreq_hw { + /delete-property/ interrupts-extended; /* reference to lmh_cluster[01] */ +}; + &psci { /delete-node/ power-domain-cpu0; /delete-node/ power-domain-cpu1; @@ -275,6 +279,14 @@ &BIG_CPU_SLEEP_1 &CLUSTER_SLEEP_0>; }; +&lmh_cluster0 { + status = "disabled"; +}; + +&lmh_cluster1 { + status = "disabled"; +}; + /* * Reserved memory changes * @@ -338,6 +350,8 @@ flash@0 { &apps_rsc { + /delete-property/ power-domains; + regulators-0 { compatible = "qcom,pm8998-rpmh-regulators"; qcom,pmic-id = "a";
Cheza firmware doesn't allow controlling LMh from the operating system. Fixes: 36c6581214c4 ("arm64: dts: qcom: sdm845: Add support for LMh node") Suggested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: David Heidelberg <david@ixit.cz> --- arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi | 14 ++++++++++++++ 1 file changed, 14 insertions(+)