[RFC PATCH 3/4] arm64: dts: qcom: sdm845: control RPMHPD performance states with UFS

From: Krzysztof Kozlowski
Date: Fri Apr 01 2022 - 11:45:06 EST


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@xxxxxxxxxx>
---
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 {
--
2.32.0