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Commit 9e688ec9 authored by David Collins's avatar David Collins
Browse files

ARM: dts: msm: update VDD_APC0/1 CPR loop configurations for sdm845 



Reduce the consecutive down setting from 2 to 0 for all threads
on both VDD_APC0 and VDD_APC1 CPRh controllers.  This ensures
the that the CPRh controllers settle the supply voltage down to
the closed-loop voltage very quickly after each OSM triggered
corner switch.

Also increase the count repeat setting for both controllers from
1 to 20 in order to avoid oscillating up, down, up, down voltage
stepping due to PFM voltage ripple.

Change-Id: Ie7f832fe36692bfae00cfd1a07d91ea7f49d7d8a
Signed-off-by: default avatarDavid Collins <collinsd@codeaurora.org>
parent b205a1ee

arch/arm64/boot/dts/qcom/sdm845-regulator.dtsi

+5 −5
Original line number Diff line number Diff line
@@ -74,7 +74,7 @@ 
		qcom,cpr-step-quot-init-min = <11>;

		qcom,cpr-step-quot-init-max = <12>;

		qcom,cpr-count-mode = <0>;		/* All at once */

		qcom,cpr-count-repeat = <1>;

		qcom,cpr-count-repeat = <20>;

		qcom,cpr-down-error-step-limit = <1>;

		qcom,cpr-up-error-step-limit = <1>;

		qcom,cpr-corner-switch-delay-time = <1042>;
@@ -103,7 +103,7 @@ 
		thread@1 {

			qcom,cpr-thread-id = <1>;

			qcom,cpr-consecutive-up = <0>;

			qcom,cpr-consecutive-down = <2>;

			qcom,cpr-consecutive-down = <0>;

			qcom,cpr-up-threshold = <2>;

			qcom,cpr-down-threshold = <2>;
@@ -180,7 +180,7 @@ 
		thread@0 {

			qcom,cpr-thread-id = <0>;

			qcom,cpr-consecutive-up = <0>;

			qcom,cpr-consecutive-down = <2>;

			qcom,cpr-consecutive-down = <0>;

			qcom,cpr-up-threshold = <2>;

			qcom,cpr-down-threshold = <2>;
@@ -264,7 +264,7 @@ 
		qcom,cpr-step-quot-init-min = <9>;

		qcom,cpr-step-quot-init-max = <14>;

		qcom,cpr-count-mode = <0>;		/* All at once */

		qcom,cpr-count-repeat = <1>;

		qcom,cpr-count-repeat = <20>;

		qcom,cpr-down-error-step-limit = <1>;

		qcom,cpr-up-error-step-limit = <1>;

		qcom,cpr-corner-switch-delay-time = <1042>;
@@ -296,7 +296,7 @@ 
		thread@0 {

			qcom,cpr-thread-id = <0>;

			qcom,cpr-consecutive-up = <0>;

			qcom,cpr-consecutive-down = <2>;

			qcom,cpr-consecutive-down = <0>;

			qcom,cpr-up-threshold = <2>;

			qcom,cpr-down-threshold = <2>;