2023-07-11 11:11:10

by Nitin Rawat

Subject: [PATCH V1] arm64: dts: qcom: sa8775p-ride: Update L4C parameters

From: Naveen Kumar Goud Arepalli <[email protected]>

L4c is the supply for UFS vccq, As per UFS spec range of vccq is
1.14V to 1.26V, There are stability issues when operating at
marginal voltage. Hence configure the min and max vccq voltages
to 1.2V.

Signed-off-by: Naveen Kumar Goud Arepalli <[email protected]>
---
arch/arm64/boot/dts/qcom/sa8775p-ride.dts | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/sa8775p-ride.dts b/arch/arm64/boot/dts/qcom/sa8775p-ride.dts
index ab767cfa51ff..26f5a4e0ffed 100644
--- a/arch/arm64/boot/dts/qcom/sa8775p-ride.dts
+++ b/arch/arm64/boot/dts/qcom/sa8775p-ride.dts
@@ -153,8 +153,8 @@

vreg_l4c: ldo4 {
regulator-name = "vreg_l4c";
- regulator-min-microvolt = <1100000>;
- regulator-max-microvolt = <1300000>;
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <1200000>;
regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
/*
* FIXME: This should have regulator-allow-set-load but
--
2.17.1

2023-07-11 11:27:24

by Krzysztof Kozlowski

Subject: Re: [PATCH V1] arm64: dts: qcom: sa8775p-ride: Update L4C parameters

On 11/07/2023 12:42, Nitin Rawat wrote:
> From: Naveen Kumar Goud Arepalli <[email protected]>
>
> L4c is the supply for UFS vccq, As per UFS spec range of vccq is
> 1.14V to 1.26V, There are stability issues when operating at
> marginal voltage. Hence configure the min and max vccq voltages
> to 1.2V.
>
> Signed-off-by: Naveen Kumar Goud Arepalli <[email protected]>

Thank you for your patch. Please add proper Sign-off-by (yours) when
sending patches.

Best regards,
Krzysztof