The L9A regulator is used to further control voltage regulators on the
board. It can be used to disable VBAT_mains, 1.8V, 3.3V, 5V rails). Make
sure that is stays always on to prevent undervolting of these volage
rails.

Fixes: 8d58a8c0d930 ("arm64: dts: qcom: Add base qrb4210-rb2 board dts")
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
Changes in v2:
- Expand commit message to mention the affected voltage rails (Bryan)
- Link to v1: https://lore.kernel.org/r/20240603-rb2-l9a-aon-v1-1-81c35a0de43d@linaro.org
---
 arch/arm64/boot/dts/qcom/qrb4210-rb2.dts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts b/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts
index 2c39bb1b97db..e0c14d23b909 100644
--- a/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts
+++ b/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts
@@ -403,6 +403,8 @@ vreg_l9a_1p8: l9 {
 			regulator-min-microvolt = <1800000>;
 			regulator-max-microvolt = <1800000>;
 			regulator-allow-set-load;
+			regulator-always-on;
+			regulator-boot-on;
 		};
 
 		vreg_l10a_1p8: l10 {

---
base-commit: 0e1980c40b6edfa68b6acf926bab22448a6e40c9
change-id: 20240603-rb2-l9a-aon-d1292bad5aaa

Best regards,
-- 
Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

On Wed, 05 Jun 2024 12:00:49 +0300, Dmitry Baryshkov wrote:
> The L9A regulator is used to further control voltage regulators on the
> board. It can be used to disable VBAT_mains, 1.8V, 3.3V, 5V rails). Make
> sure that is stays always on to prevent undervolting of these volage
> rails.
> 
> 

Applied, thanks!

[1/1] arm64: dts: qcom: qrb4210-rb2: make L9A always-on
      commit: d6c6b85bf5582bbe2efefa9a083178b5f7eef439

Best regards,
-- 
Bjorn Andersson <andersson@kernel.org>

On 5.06.2024 11:00 AM, Dmitry Baryshkov wrote:
> The L9A regulator is used to further control voltage regulators on the
> board. It can be used to disable VBAT_mains, 1.8V, 3.3V, 5V rails). Make
> sure that is stays always on to prevent undervolting of these volage
> rails.
> 
> Fixes: 8d58a8c0d930 ("arm64: dts: qcom: Add base qrb4210-rb2 board dts")
> Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
> ---

RPM should already know not to touch it, but this certainly won't hurt

Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>

Konrad