When powering up the ps8640, we need to deassert PD right
after we turn on the vdd33 regulator. Unfortunately, the vdd33
regulator takes some time (~4ms) to turn on. Add in the delay
for the vdd33 regulator so that when the driver deasserts PD
that the regulator has had time to ramp.
Signed-off-by: yangcong <yangcong5@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
---
arch/arm64/boot/dts/qcom/sc7180-trogdor-homestar-r4.dts | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/sc7180-trogdor-homestar-r4.dts b/arch/arm64/boot/dts/qcom/sc7180-trogdor-homestar-r4.dts
index fb27106bbb4a..ddba26c1a4a2 100644
--- a/arch/arm64/boot/dts/qcom/sc7180-trogdor-homestar-r4.dts
+++ b/arch/arm64/boot/dts/qcom/sc7180-trogdor-homestar-r4.dts
@@ -15,3 +15,7 @@ / {
model = "Google Homestar (rev4+)";
compatible = "google,homestar", "qcom,sc7180";
};
+
+&pp3300_brij_ps8640 {
+ regulator-enable-ramp-delay = <4000>;
+};
--
2.25.1
