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Date: Fri, 26 Aug 2022 20:40:15 +0200
From: Konrad Dybcio <konrad.dybcio@...ainline.org>
To: Douglas Anderson <dianders@...omium.org>,
Bjorn Andersson <bjorn.andersson@...aro.org>
Cc: Andrew Halaney <ahalaney@...hat.com>,
Mark Brown <broonie@...nel.org>,
Andy Gross <agross@...nel.org>,
Johan Hovold <johan+linaro@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/7] arm64: dts: qcom: sa8295p-adp: Specify which LDO
modes are allowed
On 25.08.2022 18:42, Douglas Anderson wrote:
> 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: 519183af39b2 ("arm64: dts: qcom: add SA8540P and ADP")
> Signed-off-by: Douglas Anderson <dianders@...omium.org>
> ---
Reviewed-by: Konrad Dybcio <konrad.dybcio@...ainline.org>
Konrad
>
> arch/arm64/boot/dts/qcom/sa8295p-adp.dts | 45 ++++++++++++++++++++++++
> 1 file changed, 45 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/qcom/sa8295p-adp.dts b/arch/arm64/boot/dts/qcom/sa8295p-adp.dts
> index 9398f0349944..6d05cb54e32f 100644
> --- a/arch/arm64/boot/dts/qcom/sa8295p-adp.dts
> +++ b/arch/arm64/boot/dts/qcom/sa8295p-adp.dts
> @@ -36,6 +36,9 @@ vreg_l3a: ldo3 {
> 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_l5a: ldo5 {
> @@ -44,6 +47,9 @@ vreg_l5a: ldo5 {
> regulator-max-microvolt = <912000>;
> regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
> regulator-allow-set-load;
> + regulator-allowed-modes =
> + <RPMH_REGULATOR_MODE_LPM
> + RPMH_REGULATOR_MODE_HPM>;
> };
>
> vreg_l7a: ldo7 {
> @@ -52,6 +58,9 @@ vreg_l7a: ldo7 {
> regulator-max-microvolt = <1800000>;
> regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
> regulator-allow-set-load;
> + regulator-allowed-modes =
> + <RPMH_REGULATOR_MODE_LPM
> + RPMH_REGULATOR_MODE_HPM>;
> };
>
> vreg_l13a: ldo13 {
> @@ -60,6 +69,9 @@ vreg_l13a: ldo13 {
> regulator-max-microvolt = <3072000>;
> regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
> regulator-allow-set-load;
> + regulator-allowed-modes =
> + <RPMH_REGULATOR_MODE_LPM
> + RPMH_REGULATOR_MODE_HPM>;
> };
> };
>
> @@ -73,6 +85,9 @@ vreg_l1c: ldo1 {
> regulator-max-microvolt = <912000>;
> regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
> regulator-allow-set-load;
> + regulator-allowed-modes =
> + <RPMH_REGULATOR_MODE_LPM
> + RPMH_REGULATOR_MODE_HPM>;
> };
>
> vreg_l2c: ldo2 {
> @@ -81,6 +96,9 @@ vreg_l2c: ldo2 {
> regulator-max-microvolt = <3072000>;
> regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
> regulator-allow-set-load;
> + regulator-allowed-modes =
> + <RPMH_REGULATOR_MODE_LPM
> + RPMH_REGULATOR_MODE_HPM>;
> };
>
> vreg_l3c: ldo3 {
> @@ -89,6 +107,9 @@ vreg_l3c: ldo3 {
> 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>;
> };
>
> vreg_l4c: ldo4 {
> @@ -97,6 +118,9 @@ vreg_l4c: ldo4 {
> 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_l6c: ldo6 {
> @@ -105,6 +129,9 @@ vreg_l6c: ldo6 {
> 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>;
> };
>
> vreg_l7c: ldo7 {
> @@ -113,6 +140,9 @@ vreg_l7c: ldo7 {
> regulator-max-microvolt = <1800000>;
> regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
> regulator-allow-set-load;
> + regulator-allowed-modes =
> + <RPMH_REGULATOR_MODE_LPM
> + RPMH_REGULATOR_MODE_HPM>;
> };
>
> vreg_l10c: ldo10 {
> @@ -121,6 +151,9 @@ vreg_l10c: ldo10 {
> 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_l17c: ldo17 {
> @@ -129,6 +162,9 @@ vreg_l17c: ldo17 {
> 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>;
> };
> };
>
> @@ -142,6 +178,9 @@ vreg_l3g: ldo3 {
> 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>;
> };
>
> vreg_l7g: ldo7 {
> @@ -150,6 +189,9 @@ vreg_l7g: ldo7 {
> regulator-max-microvolt = <1800000>;
> regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
> regulator-allow-set-load;
> + regulator-allowed-modes =
> + <RPMH_REGULATOR_MODE_LPM
> + RPMH_REGULATOR_MODE_HPM>;
> };
>
> vreg_l8g: ldo8 {
> @@ -158,6 +200,9 @@ vreg_l8g: ldo8 {
> regulator-max-microvolt = <880000>;
> regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
> regulator-allow-set-load;
> + regulator-allowed-modes =
> + <RPMH_REGULATOR_MODE_LPM
> + RPMH_REGULATOR_MODE_HPM>;
> };
> };
> };
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