| Message ID | 20220401145820.1003826-4-krzysztof.kozlowski@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | ufs: set power domain performance state when scaling gears | expand |
On 01/04/2022 17:58, Krzysztof Kozlowski wrote: > UFS, when scaling gears, should choose appropriate performance state of > RPMHPD power domain controller. Since UFS belongs to UFS_PHY_GDSC power > domain, add necessary parent power domain to GCC. This will cause all gcc GDSCs to be rooted in the CX. Are we sure that this is an expected (and correct) change? > > Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> > --- > arch/arm64/boot/dts/qcom/sdm845.dtsi | 17 ++++++++++++++++- > 1 file changed, 16 insertions(+), 1 deletion(-) > > diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi > index b31bf62e8680..c999b41c2605 100644 > --- a/arch/arm64/boot/dts/qcom/sdm845.dtsi > +++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi > @@ -1078,6 +1078,7 @@ gcc: clock-controller@100000 { > #clock-cells = <1>; > #reset-cells = <1>; > #power-domain-cells = <1>; > + power-domains = <&rpmhpd SDM845_CX>; > }; > > qfprom@784000 { > @@ -2336,8 +2337,22 @@ ufs_mem_hc: ufshc@1d84000 { > <0 0>, > <0 0>, > <0 300000000>; > - > + operating-points-v2 = <&ufs_opp_table>; > status = "disabled"; > + > + ufs_opp_table: opp-table { > + compatible = "operating-points-v2"; > + > + opp-50000000 { > + opp-hz = /bits/ 64 <50000000>; > + required-opps = <&rpmhpd_opp_svs>; > + }; > + > + opp-200000000 { > + opp-hz = /bits/ 64 <200000000>; > + required-opps = <&rpmhpd_opp_nom>; > + }; > + }; > }; > > ufs_mem_phy: phy@1d87000 {
On Sun 03 Apr 17:02 PDT 2022, Dmitry Baryshkov wrote: > On 01/04/2022 17:58, Krzysztof Kozlowski wrote: > > UFS, when scaling gears, should choose appropriate performance state of > > RPMHPD power domain controller. Since UFS belongs to UFS_PHY_GDSC power > > domain, add necessary parent power domain to GCC. > > This will cause all gcc GDSCs to be rooted in the CX. Are we sure that this > is an expected (and correct) change? > Per the last part of Rajendra's reply in [1], this should be fine. Naturally we might have to come up with some way to bind gdscs to one of multiple power-domains if that changes. [1] https://lore.kernel.org/all/5e572c50-d6fe-5a21-d09f-f11a072538c5@codeaurora.org/ Regards, Bjorn > > > > Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> > > --- > > arch/arm64/boot/dts/qcom/sdm845.dtsi | 17 ++++++++++++++++- > > 1 file changed, 16 insertions(+), 1 deletion(-) > > > > diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi > > index b31bf62e8680..c999b41c2605 100644 > > --- a/arch/arm64/boot/dts/qcom/sdm845.dtsi > > +++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi > > @@ -1078,6 +1078,7 @@ gcc: clock-controller@100000 { > > #clock-cells = <1>; > > #reset-cells = <1>; > > #power-domain-cells = <1>; > > + power-domains = <&rpmhpd SDM845_CX>; > > }; > > qfprom@784000 { > > @@ -2336,8 +2337,22 @@ ufs_mem_hc: ufshc@1d84000 { > > <0 0>, > > <0 0>, > > <0 300000000>; > > - > > + operating-points-v2 = <&ufs_opp_table>; > > status = "disabled"; > > + > > + ufs_opp_table: opp-table { > > + compatible = "operating-points-v2"; > > + > > + opp-50000000 { > > + opp-hz = /bits/ 64 <50000000>; > > + required-opps = <&rpmhpd_opp_svs>; > > + }; > > + > > + opp-200000000 { > > + opp-hz = /bits/ 64 <200000000>; > > + required-opps = <&rpmhpd_opp_nom>; > > + }; > > + }; > > }; > > ufs_mem_phy: phy@1d87000 { > > > -- > With best wishes > Dmitry
diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi index b31bf62e8680..c999b41c2605 100644 --- a/arch/arm64/boot/dts/qcom/sdm845.dtsi +++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi @@ -1078,6 +1078,7 @@ gcc: clock-controller@100000 { #clock-cells = <1>; #reset-cells = <1>; #power-domain-cells = <1>; + power-domains = <&rpmhpd SDM845_CX>; }; qfprom@784000 { @@ -2336,8 +2337,22 @@ ufs_mem_hc: ufshc@1d84000 { <0 0>, <0 0>, <0 300000000>; - + operating-points-v2 = <&ufs_opp_table>; status = "disabled"; + + ufs_opp_table: opp-table { + compatible = "operating-points-v2"; + + opp-50000000 { + opp-hz = /bits/ 64 <50000000>; + required-opps = <&rpmhpd_opp_svs>; + }; + + opp-200000000 { + opp-hz = /bits/ 64 <200000000>; + required-opps = <&rpmhpd_opp_nom>; + }; + }; }; ufs_mem_phy: phy@1d87000 {
UFS, when scaling gears, should choose appropriate performance state of RPMHPD power domain controller. Since UFS belongs to UFS_PHY_GDSC power domain, add necessary parent power domain to GCC. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> --- arch/arm64/boot/dts/qcom/sdm845.dtsi | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-)