linux-kernel - [PATCH V1] arm64: dts: qcom: sa8775p-ride: Remove min and max voltages for L8A

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Date:   Tue, 25 Jul 2023 15:30:07 +0530
From:   Naveen Kumar Goud Arepalli <quic_narepall@...cinc.com>
To:     quic_nitirawa@...cinc.com, agross@...nel.org, andersson@...nel.org,
        konrad.dybcio@...aro.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org
Cc:     linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Naveen Kumar Goud Arepalli <quic_narepall@...cinc.com>
Subject: [PATCH V1] arm64: dts: qcom: sa8775p-ride: Remove min and max voltages for L8A

L8A is the supply for UFS VCC, UFS specification allows different VCC
configurations for UFS devices.
-UFS 2.x devices: 2.70V - 3.60V
-UFS 3.x devices: 2.40V - 2.70V

As sa8775p-ride supports both ufs 2.x and ufs 3.x devices, remove min/max
voltages for L8A regulator. Initial voltage of L8A will be set to 2.504v
or 2.952v during PON depending on the UFS device type. On sa8775, UFS is
the only client in Linux for L8A and this regulator will be voted only
for enabling/disabling.

Signed-off-by: Naveen Kumar Goud Arepalli <quic_narepall@...cinc.com>
---
 arch/arm64/boot/dts/qcom/sa8775p-ride.dts | 2 --
 1 file changed, 2 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/sa8775p-ride.dts b/arch/arm64/boot/dts/qcom/sa8775p-ride.dts
index ed76680410b4..6f3891a09e59 100644
--- a/arch/arm64/boot/dts/qcom/sa8775p-ride.dts
+++ b/arch/arm64/boot/dts/qcom/sa8775p-ride.dts
@@ -98,8 +98,6 @@
 
 		vreg_l8a: ldo8 {
 			regulator-name = "vreg_l8a";
-			regulator-min-microvolt = <2504000>;
-			regulator-max-microvolt = <3300000>;
 			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
 			regulator-allow-set-load;
 			regulator-allowed-modes = <RPMH_REGULATOR_MODE_LPM
-- 
2.17.1