Patch "arm64: dts: qcom: sm8350-hdk: Specify which LDO modes are allowed" has been added to the 5.15-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    arm64: dts: qcom: sm8350-hdk: Specify which LDO modes are allowed

to the 5.15-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     arm64-dts-qcom-sm8350-hdk-specify-which-ldo-modes-ar.patch
and it can be found in the queue-5.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 462acae365f6b2edb8aa044eed8bb917f77b0a9d
Author: Douglas Anderson <dianders@xxxxxxxxxxxx>
Date:   Mon Aug 29 09:49:52 2022 -0700

    arm64: dts: qcom: sm8350-hdk: Specify which LDO modes are allowed
    
    [ Upstream commit 1ce8aaf6abdc35cde555924418b3d4516b4ec871 ]
    
    This board uses RPMH, specifies "regulator-allow-set-load" for LDOs,
    but doesn't specify any modes with "regulator-allowed-modes".
    
    Prior to commit efb0cb50c427 ("regulator: qcom-rpmh: Implement
    get_optimum_mode(), not set_load()") the above meant that we were able
    to set either LPM or HPM mode. After that commit (and fixes [1]) we'll
    be stuck at the initial mode. Discussion of this has resulted in the
    decision that the old dts files were wrong and should be fixed to
    fully restore old functionality.
    
    Let's re-enable the old functionality by fixing the dts.
    
    [1] https://lore.kernel.org/r/20220824142229.RFT.v2.2.I6f77860e5cd98bf5c67208fa9edda4a08847c304@changeid
    
    Fixes: 9208c19f2124 ("arm64: dts: qcom: Introduce SM8350 HDK")
    Signed-off-by: Douglas Anderson <dianders@xxxxxxxxxxxx>
    Reviewed-by: Andrew Halaney <ahalaney@xxxxxxxxxx>
    Reviewed-by: Vinod Koul <vkoul@xxxxxxxxxx>
    Reviewed-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxx>
    Signed-off-by: Bjorn Andersson <andersson@xxxxxxxxxx>
    Link: https://lore.kernel.org/r/20220829094903.v2.6.I6799be85cf36d3b494f803cba767a569080624f5@changeid
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/arch/arm64/boot/dts/qcom/sm8350-hdk.dts b/arch/arm64/boot/dts/qcom/sm8350-hdk.dts
index 56093e260ddf..9ea0d7233add 100644
--- a/arch/arm64/boot/dts/qcom/sm8350-hdk.dts
+++ b/arch/arm64/boot/dts/qcom/sm8350-hdk.dts
@@ -108,6 +108,9 @@ vreg_l5b_0p88: ldo5 {
 			regulator-max-microvolt = <888000>;
 			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
 			regulator-allow-set-load;
+			regulator-allowed-modes =
+			    <RPMH_REGULATOR_MODE_LPM
+			     RPMH_REGULATOR_MODE_HPM>;
 		};
 
 		vreg_l6b_1p2: ldo6 {
@@ -116,6 +119,9 @@ vreg_l6b_1p2: ldo6 {
 			regulator-max-microvolt = <1208000>;
 			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
 			regulator-allow-set-load;
+			regulator-allowed-modes =
+			    <RPMH_REGULATOR_MODE_LPM
+			     RPMH_REGULATOR_MODE_HPM>;
 		};
 
 		vreg_l7b_2p96: ldo7 {
@@ -124,6 +130,9 @@ vreg_l7b_2p96: ldo7 {
 			regulator-max-microvolt = <2504000>;
 			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
 			regulator-allow-set-load;
+			regulator-allowed-modes =
+			    <RPMH_REGULATOR_MODE_LPM
+			     RPMH_REGULATOR_MODE_HPM>;
 		};
 
 		vreg_l9b_1p2: ldo9 {
@@ -132,6 +141,9 @@ vreg_l9b_1p2: ldo9 {
 			regulator-max-microvolt = <1200000>;
 			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
 			regulator-allow-set-load;
+			regulator-allowed-modes =
+			    <RPMH_REGULATOR_MODE_LPM
+			     RPMH_REGULATOR_MODE_HPM>;
 		};
 	};