From: Frieder Schrempf frieder.schrempf@kontron.de
When the cpufreq driver is enabled, the buck2 regulator is kept powered on by the dependency between the CPU nodes with 'cpu-supply' set. Without the cpufreq driver the kernel will power off the regulator as it doesn't see any users. This is obviously not what we want, therefore keep the regulator powered on in any case.
Reported-by: Heiko Thiery heiko.thiery@gmail.com Fixes: 21c4f45b335f ("arm64: dts: Add the Kontron i.MX8M Mini SoMs and baseboards") Cc: stable@vger.kernel.org Signed-off-by: Frieder Schrempf frieder.schrempf@kontron.de --- arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi index 213014f59b46..c3418d263eb4 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi @@ -105,6 +105,7 @@ reg_vdd_arm: BUCK2 { regulator-min-microvolt = <850000>; regulator-max-microvolt = <950000>; regulator-boot-on; + regulator-always-on; regulator-ramp-delay = <3125>; nxp,dvs-run-voltage = <950000>; nxp,dvs-standby-voltage = <850000>;
Hi Frieder,
Am Do., 30. Sept. 2021 um 17:57 Uhr schrieb Frieder Schrempf frieder@fris.de:
From: Frieder Schrempf frieder.schrempf@kontron.de
When the cpufreq driver is enabled, the buck2 regulator is kept powered on by the dependency between the CPU nodes with 'cpu-supply' set. Without the cpufreq driver the kernel will power off the regulator as it doesn't see any users. This is obviously not what we want, therefore keep the regulator powered on in any case.
Reported-by: Heiko Thiery heiko.thiery@gmail.com Fixes: 21c4f45b335f ("arm64: dts: Add the Kontron i.MX8M Mini SoMs and baseboards") Cc: stable@vger.kernel.org Signed-off-by: Frieder Schrempf frieder.schrempf@kontron.de
Tested-by: Heiko Thiery heiko.thiery@gmail.com
arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi index 213014f59b46..c3418d263eb4 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi @@ -105,6 +105,7 @@ reg_vdd_arm: BUCK2 { regulator-min-microvolt = <850000>; regulator-max-microvolt = <950000>; regulator-boot-on;
regulator-always-on; regulator-ramp-delay = <3125>; nxp,dvs-run-voltage = <950000>; nxp,dvs-standby-voltage = <850000>;-- 2.33.0
On Thu, Sep 30, 2021 at 05:56:31PM +0200, Frieder Schrempf wrote:
From: Frieder Schrempf frieder.schrempf@kontron.de
When the cpufreq driver is enabled, the buck2 regulator is kept powered on by the dependency between the CPU nodes with 'cpu-supply' set. Without the cpufreq driver the kernel will power off the regulator as it doesn't see any users. This is obviously not what we want, therefore keep the regulator powered on in any case.
Reported-by: Heiko Thiery heiko.thiery@gmail.com Fixes: 21c4f45b335f ("arm64: dts: Add the Kontron i.MX8M Mini SoMs and baseboards") Cc: stable@vger.kernel.org Signed-off-by: Frieder Schrempf frieder.schrempf@kontron.de
Already picked up the one from Heiko.
https://lore.kernel.org/all/20210915120325.20248-1-heiko.thiery@gmail.com/
Shawn
arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi index 213014f59b46..c3418d263eb4 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi @@ -105,6 +105,7 @@ reg_vdd_arm: BUCK2 { regulator-min-microvolt = <850000>; regulator-max-microvolt = <950000>; regulator-boot-on;
regulator-always-on; regulator-ramp-delay = <3125>; nxp,dvs-run-voltage = <950000>; nxp,dvs-standby-voltage = <850000>;-- 2.33.0
linux-stable-mirror@lists.linaro.org
-
Frieder Schrempf -
Heiko Thiery -
Shawn Guo